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Perspectives on Helping Low-Income Californians Afford Housing
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Perspectives on Helping Low-Income
Californians Afford Housing
MAC TAYLOR • L E G I S L A T I V E A N A L Y S T • FEBRUARY 9, 2016
Summary
California has a serious housing shortage. California’s housing costs, consequently, have been rising rapidly
for decades. These high housing costs make it difficult for many Californians to find housing that is affordable
and that meets their needs, forcing them to make serious trade-offs in order to live in California.
In our March 2015 report, California’s High Housing Costs: Causes and Consequences, we outlined the
evidence for California’s housing shortage and discussed its major ramifications. We also suggested that the
key remedy to California’s housing challenges is a substantial increase in private home building in the state’s
coastal urban communities. An expansion of California’s housing supply would offer widespread benefits to
Californians, as well as those who wish to live in California but cannot afford to do so.
Some fear, however, that these benefits would not extend to low-income Californians. Because most new
construction is targeted at higher-income households, it is often assumed that new construction does not
increase the supply of lower-end housing. In addition, some worry that construction of market-rate housing
in low-income neighborhoods leads to displacement of low-income households. In response, some have
questioned whether efforts to increase private housing development are prudent. These observers suggest that
policy makers instead focus on expanding government programs that aim to help low-income Californians
afford housing.
In this follow up to California’s High Housing Costs, we offer additional evidence that facilitating more
private housing development in the state’s coastal urban communities would help make housing more
affordable for low-income Californians. Existing affordable housing programs assist only a small proportion of
low-income Californians. Most low-income Californians receive little or no assistance. Expanding affordable
housing programs to help these households likely would be extremely challenging and prohibitively expensive.
It may be best to focus these programs on Californians with more specialized housing needs—such as homeless
individuals and families or persons with significant physical and mental health challenges.
Encouraging additional private housing construction can help the many low-income Californians who
do not receive assistance. Considerable evidence suggests that construction of market-rate housing reduces
housing costs for low-income households and, consequently, helps to mitigate displacement in many cases.
Bringing about more private home building, however, would be no easy task, requiring state and local policy
makers to confront very challenging issues and taking many years to come to fruition. Despite these difficulties,
these efforts could provide significant widespread benefits: lower housing costs for millions of Californians.
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VARIOUS GOVERNMENT PROGRAMS HELP
CALIFORNIANS AFFORD HOUSING
Federal, state, and local governments Vouchers Help Households Afford Housing.
implement a variety of programs aimed at helping The federal government also makes payments
Californians, particularly low-income Californians, to landlords—known as housing vouchers—on
afford housing. These programs generally work behalf of about 400,000 low-income households
in one of three ways: (1) increasing the supply of in California. These payments generally cover the
moderately priced housing, (2) paying a portion of portion of a rental unit’s monthly cost that exceeds
households’ rent costs, or (3) limiting the prices and 30 percent of the household’s income.
rents property owners may charge for housing. Some Local Governments Place Limits on
Various Programs Build New Moderately Prices and Rents. Some local governments have
Priced Housing. Federal, state, and local policies that require property owners charge
governments provide direct financial assistance— below-market prices and rents. In some cases,
typically tax credits, grants, or low-cost loans—to local governments limit how much landlords
housing developers for the construction of rental can increase rents each year for existing tenants.
housing. In exchange, developers reserve these About 15 California cities have these rent controls,
units for lower-income households. (Until recently, including Los Angeles, San Francisco, San Jose, and
local redevelopment agencies also provided this Oakland. In 1995, the state enacted Chapter 331
type of financial assistance.) By far the largest of of 1995 (AB 1164, Hawkins), which prevented rent
these programs is the federal and state Low Income control for properties built after 1995 or properties
Housing Tax Credit (LIHTC), which provides tax built prior to 1995 that had not previously been
credits to affordable housing developers to cover subject to rent control. Assembly Bill 1164 also
a portion of their building costs. The LIHTC allowed landlords to reset rents to market rates
subsidizes the new construction of around 7,000 when properties transferred from one tenant to
rental units annually in the state—typically less another. In other cases, local governments require
than 10 percent of total public and private housing developers of market-rate housing to charge below-
construction. This represents a significant majority market prices and rents for a portion of the units
of the affordable housing units constructed in they build, a policy called “inclusionary housing.”
California each year.
NEED FOR HOUSING ASSISTANCE
OUTSTRIPS RESOURCES
Many Low-Income Households Receive 3.3 million low-income households (who earn
No Assistance. The number of low-income 80 percent or less of the median income where
Californians in need of assistance far exceeds they live) rent housing in California, including
the resources of existing federal, state, and local 2.3 million very-low-income households (who earn
affordable housing programs. Currently, about 50 percent or less of the median income where they
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live). Around one-quarter (roughly 800,000) of Majority of Low-Income Households Spend
low-income households live in subsidized affordable More Than Half of Their Income on Housing.
housing or receive housing vouchers. Most Around 1.7 million low-income renter households
households receive no help from these programs. in California report spending more than half of
Those that do often find that it takes several years to their income on housing. This is about 14 percent
get assistance. Roughly 700,000 households occupy of all California households, a considerably higher
waiting lists for housing vouchers, almost twice the proportion than in the rest of the country (about
number of vouchers available. 8 percent).
CHALLENGES OF EXPANDING EXISTING PROGRAMS
One possible response to these affordability Affordable Housing Construction Requires
challenges could be to expand existing housing Large Public Subsidies. While it is difficult to
programs. Given the number of households estimate precisely how many units of affordable
struggling with high housing costs, however, this housing are needed, a reasonable starting point is
approach would require a dramatic expansion the state’s current population of low-income renter
of existing government programs, necessitating households that spend more than half of their
funding increases orders of magnitude larger income on housing—about 1.7 million households.
than existing program funding and far-reaching Based on data from the LIHTC, housing built for
changes in existing regulations. Such a dramatic low-income households in California’s coastal
change would face several challenges and urban areas requires a public subsidy of around
probably would have unintended consequences. $165,000 per unit. At this cost, building affordable
Ultimately, attempting to address the state’s housing for California’s 1.7 million rent burdened
housing affordability challenges primarily through low-income households would cost in excess of
expansion of government programs likely would be $250 billion. This cost could be spread out over
impractical. This, however, does not preclude these several years (by issuing bonds or providing
programs from playing a role in a broader strategy subsidies to builders in installments), requiring
to improve California’s housing affordability. annual expenditures in the range of $15 billion
Below, we discuss these issues in more detail. to $30 billion. There is a good chance the actual
cost could be higher. Affordable housing projects
Expanding Assistance Programs
often receive subsidies from more than one source,
Would Be Very Expensive
meaning the public subsidy cost per unit likely is
Extending housing assistance to low-income higher than $165,000. It is also possible the number
Californians who currently do not receive it—either of units needed could be higher if efforts to make
through subsidies for affordable units or housing California’s housing more affordable spurred more
vouchers—would require an annual funding people to move to the state. Conversely, there is
commitment in the low tens of billions of dollars. some chance the cost could be lower if building
This is roughly the magnitude of the state’s largest some portion of the 1.7 million eased competition
General Fund expenditure outside of education at the bottom end of the housing market and
(Medi-Cal). allowed some low-income families to find
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affordable market-rate housing. Nonetheless, under Housing Shortage Has Downsides Not
any circumstances it is likely this approach would Addressed by Existing Housing Programs. High
require ongoing annual funding at least in the low housing costs are not the only downside of the
tens of billions of dollars. state’s housing shortage. As we discussed in detail
Expanding Housing Vouchers Also Would in California’s High Housing Costs, California’s
Be Expensive. Housing vouchers would be housing shortage denies many households the
similarly expensive. According to American opportunity to live in the state and contribute
Community Survey data, around 2.5 million to the state’s economy. This, in turn, reduces the
low-income households in California spend state’s economic productivity. The state’s housing
more than 30 percent of their income on rent. shortage also makes many Californians—not only
These households’ rents exceed 30 percent of low-income residents—more likely to commute
their incomes by $625 each month on average, longer distances, live in overcrowded housing, and
meaning they would require an annual subsidy delay or forgo homeownership. Housing programs
of around $7,500. This suggests that providing such as vouchers, rent control, and inclusionary
housing vouchers to all of these households would housing that do not add to the state’s housing stock
cost around $20 billion annually. By similar logic, do little to address these issues.
a less generous program that covered rent costs Scarcity of Housing Undermines Housing
exceeding 50 percent of household income would Vouchers. California’s tight housing markets pose
cost around $10 billion annually. There is, however, several challenges for housing voucher programs
good reason to believe the cost of expanding which can limit their effectiveness. In competitive
voucher programs would be significantly higher housing markets, landlords often are reluctant
than these simple estimates suggest. As we discuss to rent to housing voucher recipients. Landlords
in the next section, a major increase in the number may not be interested in navigating program
of voucher recipients likely would cause rents to requirements or may perceive voucher recipients
rise. Higher rent costs, in turn, would increase the to be less reliable tenants. One nationwide study
amount government would need to pay on behalf conducted in 2001 found that only two-thirds of
of low-income renters. This effect is difficult to voucher recipients in competitive housing markets
quantify but probably would add several billion were able to secure housing. This issue likely would
to tens of billions of dollars to the annual cost of a be amplified if the number of voucher recipients
major expansion of vouchers. competing for housing were increased significantly.
In addition, some research suggests that expanding
Existing Housing Shortage Poses
housing vouchers in competitive housing markets
Problems for Some Programs
results in rent increases, which either offset benefits
Many housing programs—vouchers, rent to voucher holders or increase government costs for
control, and inclusionary housing—attempt to the program. One study looking at an unusually
make housing more affordable without increasing large increase in the federal allotment of housing
the overall supply of housing. This approach does vouchers in the early 2000s found that each
very little to address the underlying cause of 10 percent increase in vouchers in tight housing
California’s high housing costs: a housing shortage. markets increased monthly rents by an average of
Any approach that does not address the state’s $18 (about 2 percent). This suggests that extending
housing shortage faces the following problems. vouchers to all of California’s low-income
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households (a several hundred percent increase in Barriers to Private Development Also
the supply of vouchers) could lead to substantial Hinder Affordable Housing Programs
rent inflation. If this were to occur, the estimates in
Local Resistance and Environmental
the prior section of the cost to expand vouchers to
Protection Policies Constrain Housing
all low-income households would be significantly
Development. Local community resistance and
higher.
California Environmental Quality Act (CEQA)
Housing Costs for Households Not Receiving
challenges limit the amount of housing—both
Assistance Could Rise. Expansion of voucher
private and subsidized—built in California.
programs also could aggravate housing challenges
These factors present challenges for subsidized
for those who do not receive assistance, particularly
construction and inclusionary housing programs.
if assistance is extended to some, but not all
Subsidized housing construction faces the same,
low-income households. As discussed above,
in many cases more, community opposition as
research suggests that housing vouchers result in
market-rate housing because it often is perceived as
rent inflation. This rent inflation not only effects
bringing negative changes to a community’s quality
voucher recipients but potentially increases rents
or character. Furthermore, subsidized construction,
paid by other low- and lower-middle income
like other housing developments, often must
households that do not receive assistance.
undergo the state’s environmental review process
Housing Shortage Also Creates Problems
outlined in CEQA. This can add costs and delay
for Rent Control Policies. The state’s shortage of
to these projects. Inclusionary housing programs
housing also presents challenges for expanding rent
rely on private housing development to fund
control policies. Proposals to expand rent control
construction of affordable housing. Because
often focus on two broad changes: (1) expanding
of this, barriers that constrain private housing
the number of housing units covered—by applying
development also limit the amount of affordable
controls to newer properties or enacting controls
housing produced by inclusionary housing
in locations that currently lack them—and
programs.
(2) prohibiting landlords from resetting rents to
Home Builders Often Forced to Compete for
market rates for new tenants. Neither of these
Limited Development Opportunities. With state
changes would increase the supply of housing and,
and local policies limiting the number of housing
in fact, likely would discourage new construction.
projects that are permitted, home builders often
Households looking to move to California or
compete for limited opportunities. One result of
within California would therefore continue to face
this is that subsidized construction often substitutes
stiff competition for limited housing, making it
for—or “crowds out”—market-rate development.
difficult for them to secure housing that they can
Several studies have documented this crowd-out
afford. Requiring landlords to charge new tenants
effect, generally finding that the construction of
below-market rents would not eliminate this
one subsidized housing unit reduces market-rate
competition. Households would have to compete
construction by one-half to one housing unit. These
based on factors other than how much they are
crowd-out effects can diminish the extent to which
willing to pay. Landlords might decide between
subsidized housing construction increases the
tenants based on their income, creditworthiness, or
state’s overall supply of housing.
socioeconomic status, likely to the benefit of more
affluent renters.
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Other Unintended Consequences This lock-in effect can cause households to stay
longer in a particular location than is otherwise
“Lock-In” Effect. Households residing
optimal for them.
in affordable housing (built via subsidized
Declining Quality of Housing. By depressing
construction or inclusionary housing) or
rents, rent control policies reduce the income
rent-controlled housing typically pay rents well
received by owners of rental housing. In response,
below market rates. Because of this, households
property owners may attempt to cut back their
may be discouraged from moving from their
operating costs by forgoing maintenance and
existing unit to market-rate housing even when it
repairs. Over time, this can result in a decline in
may otherwise benefit them—for example, if the
the overall quality of a community’s housing stock.
market-rate housing would be closer to a new job.
MORE PRIVATE HOME BUILDING COULD HELP
Most low-income Californians receive little higher-income households. This seems to suggest
or no assistance from existing affordable housing that construction of new market-rate housing
programs. Given the challenges of significantly does not add to the supply of lower-end housing.
expanding affordable housing programs, this is Building new market-rate housing, however,
likely to persist for the foreseeable future. Many indirectly increases the supply of housing available
low-income households will continue to struggle to low-income households in multiple ways.
to find housing that they can afford. Encouraging Housing Becomes Less Desirable as It Ages . . .
more private housing development seems like a New housing generally becomes less desirable as it
reasonable approach to help these households. But ages and, as a result, becomes less expensive over
would it actually help? In this section, we present time. Market-rate housing constructed now will
evidence that construction of new, market-rate therefore add to a community’s stock of lower-cost
housing can lower housing costs for low-income housing in the future as these new homes age and
households. become more affordable. Our analysis of American
Housing Survey data finds evidence that housing
Increased Supply, Lower Costs
becomes less expensive as it ages. Figure 1 (see
Lack of Supply Drives High Housing Costs. As next page) shows the average rent for housing
we demonstrate in California’s High Housing Costs, built between 1980 and 1985 in Los Angeles and
a shortage of housing results in high and rising San Francisco. These housing units were relatively
housing costs. When the number of households expensive in 1985 (rents in the top fifth of all rental
seeking housing exceeds the number of units units) but were considerably more affordable by
available, households must try to outbid each other, 2011 (rents near the median of all rental units).
driving up prices and rents. Increasing the supply Housing that likely was considered “luxury” when
of housing can help alleviate this competition and, first built declined to the middle of the housing
in turn, place downward pressure on housing costs. market within 25 years.
Building New Housing Indirectly Adds to the
Supply of Housing at the Lower End of the Market.
New market-rate housing typically is targeted at
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. . . But Lack of New Construction Can Slow New Housing Construction Eases Competition
This Process. When new construction is abundant, Between Middle- and Low-Income Households.
middle-income households looking to upgrade Another result of too little housing construction
the quality of their housing often move from is that more affluent households, faced with
older, more affordable housing to new housing. limited housing choices, may choose to live in
As these middle-income households move out neighborhoods and housing units that historically
of older housing it becomes available for lower- have been occupied by low-income households.
income households. This is less likely to occur in This reduces the amount of housing available for
communities where new housing construction is low-income households. Various economic studies
limited. Faced with heightened competition for have documented this result. One analysis of
scarce housing, middle-income households may American Housing Survey data by researchers at
live longer in aging housing. Instead of upgrading the Federal Reserve Bank of New York found that
by moving to a new home, owners of aging homes “the more constrained the supply response for new
may choose to remodel their existing homes. residential units to demand shocks, the greater the
Similarly, landlords of aging rental housing may probability that an affordable unit will filter up and
Graphic Sign Off
elect to update their properties so that they can out of the affordable stock.” Other researchers have
continue to market them to middle-income found thatS loewc-rientcaormye neighborhoods are more
households. As a result, less housing transitions to likely to exApneraielynscet an influx of higher-income
the lower-end of the housing market over time. One households when they are in close proximity to
MPA
study of housing costs in the U.S. found that rental affluent neighborhoods with tight housing markets.
Deputy
housing generally depreciated by about 2.5 percent More Supply Places Downward Pressure on
per year between 1985 and 2011, but that this rate Prices and Rents. When the number of housing
ARTWORK #160020
was considerably lower (1.8 percent per year) in units available at the lower end of a community’s
regions with relatively limited housing supply. housing market increases, growth in prices
Template_LAOReport_sm.ait
and rents slows. Evidence
supporting this relationship
Figure 1
Housing Becomes Less Expensive as It Ages can be found by comparing
housing expenditures of
Percentile Rank of the Rent for Housing Built Between 1980 and 1985
low-income households living
90% in California’s slow-growing
1985
80 coastal communities to
2011
70 those living in fast-growing
communities elsewhere
60
in the country. Between
50
1980 and 2013, the housing
40
stock in California’s coastal
30
urban counties (counties
20
comprising metropolitan
10 areas with populations greater
than 500,000) grew by only
Los Angeles San Francisco
34 percent, compared to
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99 percent in the fastest growing urban counties (see next page) shows, displacement was more than
throughout the country (top fifth of all urban twice as likely in low-income census tracts with
counties). As figure 2 shows, over the same time little market-rate housing construction (bottom
period rents paid by low-income households grew fifth of all tracts) than in low-income census tracts
nearly three times faster in California’s coastal with high construction levels (top fifth of all tracts).
urban counties than in the fastest growing urban Results Do Not Appear to Be Driven by
counties (50 percent compared to 18 percent). Inclusionary Housing Policies. One possible
As a result, the typical low-income household in explanation for this finding could be that many
California’s costal urban counties now spends Bay Area communities have inclusionary housing
around 54 percent of their income on housing, policies. In communities with inclusionary housing
compared to only 43 percent in fast growing policies, most new market-rate construction is
counties. This difference—11 percentage points—is paired with construction of new affordable housing.
roughly equal to a typical low-income household’s It is possible that the new affordable housing
total spending on transportation. units associated with increased market-rate
Graphic Sign Off
development—and not market-rate development
Lower Costs Reduce Chances of Displacement Secretary
itself—could be mitigating displacement. Our
More Private Development Associated With analysis, however, finds that market-rate housing Analyst
Less Displacement. As market-rate housing construction appears to be associated with MPA
construction tends to slow the growth in prices less displacement regardless of a community’s Deputy
and rents, it can make it easier for low-income inclusionary housing policies. As with other
households to afford their existing homes. This Bay Area communities, in communities without
can help to lessen the displacement of low-income inclusionary housing policies, displacement
households. Our analysis of
low-income neighborhoods
Figure 2
in the Bay Area suggests
Places With More Building Saw
a link between increased
Slower Growth in Rents for Poor Households
construction of market-rate
Rents Paid by Low-Income Households in Urban Counties (In 2013 Dollars)
housing and reduced
$1,400
displacement. (See the
technical appendix for 1980
1,200
more information on how 2013
we defined displacement 1,000
for this analysis.) Between
800
2000 and 2013, low-income
census tracts (tracts with an 600
above-average concentration
400
of low-income households)
in the Bay Area that built the 200
most market-rate housing
experienced considerably less California Coast U.S. Counties With Most Home Building
displacement. As Figure 3
www.lao.ca.gov Legislative Analyst’s Office 9
ARTWORK #160020
Template_LAOReport_mid.ait
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was more than twice as likely in low-income experience displacement. A neighborhood’s
census tracts with limited market-rate housing demographics and housing characteristics probably
construction than in low-income census tracts with are important. Nonetheless, we continue to find
high construction levels. that increased market-rate housing construction is
Relationship Remains After Accounting for linked to reduced displacement after using common
Economic and Demographic Factors. Other factors statistical techniques to account for these factors.
play a role in determining which neighborhoods (See the technical appendix for more details.)
CONCLUSION
Addressing California’s housing crisis is The current response to the state’s housing
one of the most difficult challenges facing the crisis often has centered on how to improve
Graphic Sign Off
state’s policy makers. The scope of the problem affordable housing programs. The enormity of
is massive. Millions of Californians struggle to California’s housing challenges, however, suggests
Secretary
find housing that is both affordable and suits that policy makers look for solutions beyond these
Analyst
their needs. The crisis also is a long time in the programs. While affordable housing programs
MPA
making, the culmination of decades of shortfalls are vitally important to the households they
Deputy
in housing construction. And just as the crisis has assist, these programs help only a small fraction
taken decades to develop, it will take many years of the Californians that are struggling to cope
or decades to correct. There are no quick and easy with the state’s high housing costs. The majority
fixes. of low-income households receive little or no
assistance and spend more
Figure 3 than half of their income on
Building Market-Rate Housing housing. Practically speaking,
Appears to Reduce Displacement expanding affordable
Percent of Low-Income Bay Area Census Tracts That housing programs to serve
Experienced Displacement Between 2000 and 2013
these households would be
extremely challenging and
40% Amount of Market-Rate
Housing Construction prohibitively expensive.
Low
In our view, encouraging
High
30
more private housing
development can provide
20 some relief to low-income
households that are unable
to secure assistance. While
10
the role of affordable
housing programs in
helping California’s most
All Communities Communities Without
Inclusionary Housing disadvantaged residents
remains important,
ARTWORK #160020
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AN LAO BRIEF
we suggest policy makers primarily focus on The changes needed to bring about significant
expanding efforts to encourage private housing increases in housing construction undoubtedly will
development. Doing so will require policy makers be difficult and will take many years to come to
to revisit long-standing state policies on local fruition. Policy makers should nonetheless consider
governance and environmental protection, as these efforts worthwhile. In time, such an approach
well as local planning and land use regimes. offers the greatest potential benefits to the most
Californians.
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REFERENCES
Early, D. W. (2000). Rent Control, Rental Malpezzi, S., & Vandell, K. (2002). Does
Housing Supply, and the Distribution of Tenant the low-income housing tax credit increase
Benefits. Journal of Urban Economics, 48(2), the supply of housing? Journal of Housing
185-204. Economics, 11(4), 360-380.
Eriksen, M. D., & Rosenthal, S. S. (2010). Munch, J. R., & Svarer, M. (2002). Rent
Crowd out effects of place-based subsidized control and tenancy duration. Journal of Urban
rental housing: New evidence from the LIHTC Economics, 52(3), 542-560.
program. Journal of Public Economics, 94(11),
Rosenthal, S. S. (2014). Are Private Markets
953-966.
and Filtering a Viable Source of Low-Income
Eriksen, M. D., & Ross, A. (2014). Housing Housing? Estimates from a “Repeat Income”
Vouchers and the Price of Rental Housing. Model. The American Economic Review,
American Economic Journal: Economic Policy. 104(2), 687-706.
Finkel, M., & Buron, L. (2001). Study Sims, D. P. (2007). Out of control: What
on Section 8 Voucher Success Rates. can we learn from the end of Massachusetts
Volume I. Quantitative Study of Success rent control? Journal of Urban Economics,
Rates in Metropolitan Areas. Prepared by Abt 61(1), 129-151.
Associates for the U.S. Department of Housing
Sinai, T., & Waldfogel, J. (2005). Do
and Urban Development, 2-3.
low-income housing subsidies increase the
Glaeser, E. L., & Luttmer, E. F. (2003). The occupied housing stock? Journal of Public
Misallocation of Housing Under Rent Control. Economics, 89(11), 2137-2164.
The American Economic Review, 93(4).
Somerville, C. T., & Mayer, C. J. (2003).
Guerrieri, V., Hartley, D., & Hurst, E. Government Regulation and Changes in the
(2013). Endogenous Gentrification and Housing Affordable Housing Stock. Economic Policy
Price Dynamics. Journal of Public Economics, Review, 9(2), 45-62.
Volume 100 (C), 45-60.
Susin, S. (2002). Rent vouchers and the
Gyourko, J., & Linneman, P. (1990). Rent price of low-income housing. Journal of Public
Controls and Rental Housing Quality: A Note Economics, 83(1), 109-152.
on the Effects of New York City’s Old Controls.
Journal of Urban Economics, 27(3), 398-409.
12 Legislative Analyst’s Office www.lao.ca.gov
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TECHNICAL APPENDIX
To examine the relationship between displacement between 2000 and 2013. This type
market-rate housing construction and displacement of model allows us to hold constant various
of low-income households we developed a simple economic and demographic factors and isolate
econometric model to estimate the probability of a the impact of increased market-rate construction
low-income Bay Area neighborhood experiencing on the likelihood of displacement. The results
displacement. of our regression are show in Figure A1.
Data. We use data on Bay Area census tracts Coefficient estimates from probit regressions are
(small subdivisions of a county typically containing not easily interpreted. While the fact that the
around 4,000 people) maintained by researchers coefficient for market-rate housing construction
with the University of California (UC) Berkeley is statistically significant and negative suggests
Urban Displacement Project. This dataset included that more construction reduces the likelihood
information on census tract demographics, housing of displacement, the magnitude of this effect
characteristics, and housing construction levels. We is not immediately clear. To better understand
focus on data for the period 2000 to 2013. these results, we used the model to compare the
Defining Displacement. Researchers have probability that an average census tract would
not developed a single definition of displacement. experience displacement when its market-rate
Different studies use different measures. For our construction was low (0 units), average (136 units),
analysis, we use a straightforward yet imperfect and high (243 units). As shown in Figure A2 (see
definition of displacement which is similar to next page), with low construction levels, a census
the definition used by UC Berkeley researchers. tract’s probability of experiencing displacement was
Specifically, we define a census tract as having 47 percent, compared to 34 percent with average
experienced displacement if (1) its overall construction levels, and 26 percent with high
population increased and its population of construction levels.
low-income households
Figure A1
decreased or (2) its overall
Regression Results
population decreased and
its low-income population Dependent Variable: Did Displacement Occur (Yes=1 and No=0)?
declined faster than the Independent Variable Coefficient Standard Error
overall population. Number of market-rate housing units built -0.00237 0.00043
Our Model. We Share of population that is low income 1.74075 0.54137
Share of population that is nonwhite -0.61213 0.29151
use probit regression
Share of adults over 25 with a college 1.90054 0.38599
analysis to evaluate how degree
Population density -0.00001 0.00000
various factors affected
Share of housing built before 1950 1.16506 0.22569
the likelihood of a
Constant -1.45886 0.33420
census tract experiencing
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Graphic Sign Off
Secretary
Analyst
MPA
Deputy
AN LAO BRIEF
Figure A2
More Housing Construction
Linked to Lower Chances of Displacement
Likelihood of an Average Low-Income Bay Area
Census Tract Experiencing Displacement, 2000 to 2013
50% Amount of Market-Rate
Housing Construction
Low
40 Average
High
30
20
10
All Communities Communities Without
Inclusionary Housing
ARTWORK #160020
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are available on the LAO’s website at www.lao.ca.gov. The LAO is located at 925 L Street, Suite 1000,
Sacramento, CA 95814.
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