San Diego County Cities Lean on ADUs as Affordable Housing Solution

Some jurisdictions are making ADUs easier and cheaper to build, but rents on even small units remain high as the region struggles to meet its housing production goals.

1 minute read

October 9, 2022, 11:00 AM PDT

By Diana Ionescu @aworkoffiction


Aerial view of coastline with homes in Encinitas, California

Kyle Sprague / Encinitas, California

Some cities in north San Diego County want to make it easier for residents to build accessory dwelling units, also known as ADUs, which are providing an affordable housing option to renters in the pricy region. As Laura Place reports for The Coast News, in Encinitas, where the city approved 79 ADU permits in the first 8 months of this year, homeowners can access a set of pre-approved building plans to skip the expense of having plans drawn. The city of Carlsbad plans to launch a similar program.

Cities also hope ADUs can help fulfill their state-mandated affordable housing targets. “In Del Mar, one of the county’s most expensive and affluent cities, an ADU Incentive Pilot Program offers developers and property owners a 500-square-foot floor area bonus if they agree to rent out the ADU to low-income households for at least 30 years.” However, over four years, the program has yielded only one deed-restricted ADU that has not been rented out to a low-income resident yet.

“Developers say that just because ADUs can be smaller than usual apartments, this does not mean they are cheaper when it comes to construction, and rents per square foot are often higher.” Without regulations and programs that incentivize income-restricted ADUs, many of these units will likely remain out of reach for low-income renters.

Friday, September 30, 2022 in The Coast 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

Wastewater pouring out from a pipe.

Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage

Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”

April 13, 2025 - Inside Climate News

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

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

April 16, 2025 - Diana Ionescu

Blue and white Seattle Link light rail train exiting concrete Downtown Bellevue Tunnel in Bellevue, WA.

Why Should We Subsidize Public Transportation?

Many public transit agencies face financial stress due to rising costs, declining fare revenue, and declining subsidies. Transit advocates must provide a strong business case for increasing public transit funding.

April 7, 2025 - Todd Litman

Two people on bikes in red painted bike lane with bus in traffic lane next to them.

Understanding Road Diets

An explainer from Momentum highlights the advantages of reducing vehicle lanes in favor of more bike, transit, and pedestrian infrastructure.

April 17 - Momentum Magazine

Aerial view of large warehouses across from development of suburban single-family homes in Jurupa, California with desert mountains in background.

New California Law Regulates Warehouse Pollution

A new law tightens building and emissions regulations for large distribution warehouses to mitigate air pollution and traffic in surrounding communities.

April 17 - Black Voice News

Purple Phoenix light rail train connected to overhead wires at sunset.

Phoenix Announces Opening Date for Light Rail Extension

The South Central extension will connect South Phoenix to downtown and other major hubs starting on June 7.

April 17 - Arizona Republic