There
is potential for many thousands of new secondary housing units in single-family
areas throughout San Mateo County, and more should be done to make these units
easier to build, argued a Civil Grand Jury Report released last year.
San
Mateo County cities were required to provide feedback on the report, and most
communities were largely in agreement with the report's findings. Access the
full report and responses here.
The
availability of housing, especially housing considered "affordable"
in San Mateo County is considered by county housing leaders to be at a crisis
point, the report stated. About 68% of the county's land is protected from
development as agricultural or open space, and of the already developed land,
two thirds is occupied by single-family homes – of which there are about
155,000 within the county.
However,
there are only about 4,000 known secondary units on those properties, the
report stated.
Several
rounds of laws passed at the state level that took effect in 2017 and 2020 are
expected to make constructing second units easier for homeowners. For instance,
just since 2017, the number of new second units in the county increased to an
average of 269 per year, up from 60 per year in the years 2010 through 2016,
according to the report.
And
new laws that took effect on Jan. 1, 2020, streamlined the process further.
These included laws that bar homeowner associations from banning secondary
units, require local governments to include steps to incentivize and promote
the creation of affordable second units in their general plans, and prohibit
impact fees, additional parking or owner occupation requirements for second
units that are 750 square feet or less in size. In addition, second units are
not allowed to be used as short-term rentals, or those less than 30 days, in a
move to discourage their use as vacation rentals.
In
addition, in January of last year, the county started an amnesty pilot program
for homeowners who want to upgrade existing non-permitted second units. It
allows existing second units to be brought up to code and receive permits, and
offers homeowners a no-risk option to back out of the process any time without
having to bring the non-permitted unit up to health and safety standards.
Yet
the biggest obstacles that remain to building new second units or upgrading
non-permitted ones are obtaining financing, a limited supply of contractors
willing to work on second units, and a limited number of inspectors recruited
and trained by local governments, the report stated.
The
grand jury then offered several recommendations. The county and cities within
the county should keep reaching out to homeowners to let them know about the
new laws that streamline the process to build and permit second units, the jury
said. The county and its cities should figure out how to make a list of
financial partners that can help homeowners secure funding to build or upgrade
second units. They should develop a list of contractor resources and work with
training institutions to recruit and train more general contractors and
inspectors. And they should encourage homeowners whose second units are not
permitted to get them permitted.
Various
models have been studied to encourage jurisdictions to make second units more
accessible to homeowners. For instance, San Jose has created a position called
an "ADU Ally," who helps people with their questions about secondary
units or accessory dwelling units (ADUs), while Napa and Sonoma counties have
the Napa Sonoma ADU Center, which offers technical assistance and homeowner
education. There is also a statewide association called the "Casita
Coalition" that provides resources to policymakers and city professionals.
The county is supporting creating a white paper to look at those approaches,
according to the report.
Several
communities weighed in on the reports with their own responses.
Menlo
Park noted that the county is already working with the Casita Coalition's
committee working on ADU financing strategies. A recent study in Menlo Park
found that between 2010 and 2018, there were 126 violations at second units
reported, or about 1% of all housing units citywide. About 78% of the
unpermitted second units citywide are in the city's Belle Haven neighborhood,
while most of the permitted second units are in other areas of the city,
according to the city's response.
Menlo
Park and other communities pushed back on the notion that a shortage of
inspectors are an obstacle to building construction.
Other
communities noted that while there are only 4,000 known secondary units, it's
still not clear how many unpermitted second units exist throughout the county.
The
Almanac
by Kate Bradshaw
February 19, 2021