LA ADU Guide is an independent homeowner guide. We are not a contractor.
Your area
A house in Los Angeles
Area guide: Adu Granada Hills South Los Angeles

Granada Hills South ADU Permits by Year and Type.

Granada Hills South: 880 ADU permits since 2020 and a yearly count that peaked in 2024. Median size, declared value and permit days for each ADU type.

Photo: This Old House - Los Angeles House Project by Charles & Hudson, CC BY-SA 2.0, via Openverse (flickr).

Last reviewed 1 source 2 min read

Granada Hills South ranks seventh among 236 areas, with 880 ADU permits issued by LADBS from 2020 to November 2026. It lies in council district 12.

Growth

YearPermits
202056
202184
2022140
2023137
2024202
2025167
2026 (partial)94

From 56 permits in 2020, the area reached 202 in 2024, its peak so far, then 167 in 2025. 2026 stands at 94 and the year is not finished.

Permit types in detail

TypePermitsMedian sizeMedian declared valuationMedian per sq ftDays to permitDays permit to CofO
New detached or new construction207975 sq ft$120,000$113177374
Garage or space conversion495497 sq ft$50,000$97102315
JADU136413 sq ft$34,250$8281312
All ADU permits880600 sq ft$60,000$102119328

Time columns are medians in days. Conversions are 56 percent of permits, new units 24 percent, JADUs 15 percent.

Notes on the mix

New construction accounts for 207 permits, roughly one in four, at a median of 975 square feet and $120,000 declared. Conversions are declared at $97 per square foot, against $98 for conversions citywide. JADUs are priced lower, at $82 per square foot.

Which route suits a house depends on the lot and the existing structure, and this comparison of ADUs, JADUs and conversions is a good starting point. The permits themselves are all handled by LADBS; the process guide explains how.

City comparison

For all ADU permits, the median declared valuation is $60,000 here and $60,000 citywide, the median size is 600 versus 558 square feet, and the median time to permit is 119 versus 154 days. After issue, the median to CofO is 328 days here and 368 for the city. New units get their permits in 177 days here against 213 citywide.

Completion status

Of 880 permits, 601 show a certificate of occupancy, about 68 percent. The post-permit median is based only on the 601 permits with a CofO.

Where the numbers come from

We flagged ADU permits from the permit's ADU fields and descriptions and set aside supplemental permits. Declared valuation is what the applicant wrote on the permit and not the full project cost; design, fees, utilities and finishes are frequently extra. Day counts are medians for the permits that reached each step. 2026 is a partial year. Source: LADBS Building Permits Issued 2020 to Present, data.lacity.org dataset pi9x-tg5x (City of Los Angeles only), our analysis, November 2026.

Next steps

Work out a budget with the ADU cost guide, set expectations with how long an ADU takes, and before signing anything read how to check an ADU builder's CSLB license.

Sources

  1. LADBS Building Permits Issued 2020 to Present (data.lacity.org)

Other areas.

A backyard cottage ADU behind a house
Adu Pacoima Los Angeles, aerial. USDA NAIP imagery.
A backyard cottage ADU behind a house
Adu Reseda Los Angeles, aerial. USDA NAIP imagery.
A backyard cottage ADU behind a house
Adu Woodland Hills Warner Center Los Angeles, aerial. USDA NAIP imagery.
A house in Los Angeles
Adu Greater Valley Glen Los Angeles, aerial. USDA NAIP imagery.
A house in Los Angeles
Adu Greater Wilshire Los Angeles, aerial. USDA NAIP imagery.
A house in Los Angeles
Adu Lake Balboa Los Angeles, aerial. USDA NAIP imagery.
A backyard cottage ADU behind a house
Adu Mar Vista Los Angeles, aerial. USDA NAIP imagery.
A backyard cottage ADU behind a house
Adu Noho Los Angeles, aerial. USDA NAIP imagery.
A backyard cottage ADU behind a house
Adu Sherman Oaks Los Angeles, aerial. USDA NAIP imagery.
A backyard cottage ADU behind a house
Adu Sun Valley Area Los Angeles, aerial. USDA NAIP imagery.
A house in Los Angeles
Adu Sunland Tujunga Los Angeles, aerial. USDA NAIP imagery.
A house in Los Angeles
Adu Sylmar Los Angeles, aerial. USDA NAIP imagery.
A house in Los Angeles
Adu Van Nuys Los Angeles, aerial. USDA NAIP imagery.
A house in Los Angeles
Adu West Hills Los Angeles, aerial. USDA NAIP imagery.
A backyard cottage ADU behind a house
Adu Winnetka Los Angeles, aerial. USDA NAIP imagery.