San Jose Homeowners Can Now Sell ADUs as Condos

A new policy could help boost the supply of smaller, more affordable ‘starter homes’ in the first California city to legalize the sale of ADUs.

2 minute read

August 19, 2024, 12:00 PM PDT

By Diana Ionescu @aworkoffiction


Historic Victorian houses in San Jose, California.

Sundry Photography / Adobe Stock

The city of San Jose became the first in California to allow the sale of accessory dwelling units (ADUs) as condos, which supporters say will create a new supply of ‘starter homes’ for households looking to become homeowners. In a city where just 6 percent of residential land is zoned for multifamily housing, the policy could have a major impact on San Jose’s housing supply.

As Vicente Vera explains in San Jose Spotlight, the change was made possible by AB 1033, signed by Governor Gavin Newsom last year, which lets municipalities set their own rules on ADU sales.“With more than 1,400 new ADUs built since 2019 and thousands more in development across San Jose, city leaders hope to alleviate the affordable housing crisis with the help of existing homeowners.”

According to Rafael Perez, board president of the affordable housing advocacy nonprofit Casita Coalition, ADU condos typically sell for 40 to 60 percent of the average home price in their area. However, Todd Langton, executive director of homelessness nonprofit Agape Silicon Valley expressed concern that institutional buyers could take advantage of the law and suggested policies to prevent purchases by investors.

According to an article in The Real Deal, “Unlike the controversial Senate Bill 9, which allows homeowners to create two separate lots, a homeowner using AB 1033 must set up a homeowners association for the main house and ADU “condo.” Governing documents would determine how common areas, such as a shared yard, would be maintained and fixed.”

Thursday, August 15, 2024 in San José Spotlight

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

October 28, 2026 - Zachary Whalen

A car drives through a puddle, making a large splash. Rain pours down.

California plans to bury El Niño’s downpour

If the state plays its cards right, it may be able to store a billion acre-feet of El Niño’s water in aquifers.

October 28, 2026 - Grist

A pencil rendering of Foundry Park, which shows skyscrapers and public green spaces.

Chicago breaks ground on $3 billion megadevelopment

The new neighborhood, titled Foundry Park, will one day host 3,700 residences.

October 23, 2026 - Chicago Sun Times

A swamp in South Carolina with tall pale trees and Spanish moss in the water.

Satanic place names

From streams and lakes to valleys and canyons, I mapped more than 1,000 places named after the Devil.

October 31 - The Daily Yonder

A rendering of a high speed rain station in California, with wide platforms and a sleep train with yellow highlights.

California High-Speed Rail Authority CEO resigns after $600,000 scandal

Under Ian Choudri, the authority used taxpayer dollars to fund first class flights and trips to nightclubs.

October 30 - Cal Matters

 A bridge stretches across the Missouri River at Chamberlain, South Dakota.

Want to study the Missouri River? Soon, you may need unanimous approval from 10 states

Legislation would require 10 governors’ permission to study or build projects moving water outside the basin.

October 30 - South Dakota Searchlight