Appetite for ADUs Rises in San Jose

San Jose has issued a steadily-rising number of ADU permits in recent years. Now, Mayor Sam Liccardo has implemented measures to ease the process for homeowners who want to build granny flats.

1 minute read

August 30, 2019, 10:00 AM PDT

By Philip Rojc @PhilipRojc


Accessory Dwelling Unit

Nicolás Boullosa / Flickr

According to San Jose Mayor Sam Liccardo, accessory dwelling units (ADUs) are "the single fastest and most efficient step in addressing the city's affordable housing crisis," Emily DeRuy reports. "And with the city struggling to meet the mayor's goal of building 25,000 units — including 10,000 affordable homes —  by 2022, accessory dwelling units are also a way to add to the city's housing stock."

From January through June of 2019, San Jose issued 191 ADU permits, exceeding 2018's annual total of 190 as well as a mere 91 in 2017. According to polls, almost a third of San Jose residents are interested in having an ADU on their property, and the city says over half of its single-family homes would qualify.

To ease the permitting process, the city has rolled out measures including a set of pre-approved ADU designs, an express lane at the city's permitting center, and an online portal to help residents understand what steps to take.

"Other cities in the region are implementing their own changes [...] And those policy tweaks are paying off," DeRuy writes. ADU applications are on the rise throughout the region, especially as more families turn to "multi-generational living arrangements" in the face of sky-high housing costs.

Tuesday, August 27, 2019 in The Mercury News

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Concrete Brutalism building with slanted walls and light visible through an atrium.

What ‘The Brutalist’ Teaches Us About Modern Cities

How architecture and urban landscapes reflect the trauma and dysfunction of the post-war experience.

February 28, 2025 - Justin Hollander

Complete Street

‘Complete Streets’ Webpage Deleted in Federal Purge

Basic resources and information on building bike lanes and sidewalks, formerly housed on the government’s Complete Streets website, are now gone.

February 27, 2025 - Streetsblog USA

Downtown Los Angeles skyline at sunset with new 6th Street Viaduct arches in foreground.

Downtown Los Angeles on the Rise: A Promising 2025

Fueled by new developments, cultural investments, and a growing dining scene, downtown Los Angeles is poised for significant growth in 2025, despite challenges from recent wildfires and economic uncertainties.

February 21, 2025 - Los Angeles Downtown News

People walking on San Francisco street with 'Slow Streets' signs.

San Francisco Slow Streets Bucks Citywide Trend, Reducing Injuries by 61 Percent

Low-cost interventions aimed at slowing traffic are making a major impact on road safety.

1 hour ago - KQED

Two pastel green/blue front doors on duplex with decorative wreaths.

How Single-Family Conversions Benefit Both Homeowners and Cities

Converting single-family homes to triplexes can ease the housing crisis and offer affordable, flexible options for more households. Why is it largely illegal?

2 hours ago - Strong Towns

Electric Cars

Report: Transportation Equity Requires More Than Electrification

Lower-income households often lack the resources to buy electric cars, signaling a need for a more holistic approach to improving mobility and lowering transportation costs.

3 hours ago - Smart Cities Dive

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.