Residential ADU and addition permits in Los Angeles, CA
1,371 residential ADU and addition permits issued by Los Angeles (LADBS building), Los Angeles (LADBS electrical), Los Angeles (LADBS mechanical/plumbing), the 8 weeks ending Oct 10, 2026. Oct 10, 2026 is the latest issue date the source has published.
Quick answer. In the 8 weeks ending Oct 10, 2026, 1,371 residential ADU and addition permits were issued in Los Angeles, CA, according to public records from Los Angeles (LADBS building), Los Angeles (LADBS electrical), Los Angeles (LADBS mechanical/plumbing). The busiest ZIP codes were 90272 (56 permits), 91335 (51 permits), 91344 (48 permits). The median declared value was $50,000 across 1,077 permits that list one. The latest permit date published is Oct 10, 2026.
What an ADU and addition permit means in Los Angeles
A residential ADU or addition permit is a new unit or more square footage on an existing home. For an ADU builder or addition contractor it shows where lots are being built out, and the subs those jobs need.
In Los Angeles, permits were issued on 54 different days in the window; the most recent were Oct 10, 2026, Oct 9, 2026, Oct 8, 2026. The busiest ZIPs were 90272 (56), 91335 (51), 91344 (48).
By residential ADU and addition permit count, Los Angeles ranks #1 of the 46 ADU and addition pages on this site and #1 of 11 in CA.
- Mail the neighbors of each ADU.
- Pitch trades to the builders pulling the most permits.
- Track declared values by ZIP.
Other work on the same permits
Share of these 1,371 permits whose type or description also matches another trade. These are the follow-on and partner trades on Los Angeles jobs.
- garage: 405 permits (30%)
- electrical: 191 permits (14%)
- fire sprinkler: 99 permits (7%)
- deck/patio: 79 permits (6%)
Weekly trend
Permits per 7-day period, ending Oct 10, 2026. n/c = not collected yet (before our pipeline started pulling this source). It is not zero. Striped bars are partly collected weeks.
Top permit types
| Permit type / subtype | Permits | Share |
|---|---|---|
| Bldg-Addition / 1 or 2 Family Dwelling | 632 | 46% |
| Bldg-Alter/Repair / 1 or 2 Family Dwelling | 369 | 27% |
| Electrical / 1 or 2 Family Dwelling | 137 | 10% |
| Grading / 1 or 2 Family Dwelling | 54 | 4% |
| Electrical / Apartment | 48 | 4% |
Busiest ZIP codes
| ZIP | Permits | Share | 8-wk avg / week |
|---|---|---|---|
| 90272 | 56 | 4% | 7.00 |
| 91335 | 51 | 4% | 6.38 |
| 91344 | 48 | 4% | 6.00 |
| 91342 | 42 | 3% | 5.25 |
| 91331 | 39 | 3% | 4.88 |
8-wk avg / week is the trailing 8-week weekly average we quote in coverage checks for that ZIP and trade. It counts every source in the ZIP and includes permits with unknown use, so it can be higher than this page's residential count.
Type stated in the permit
| Type | Permits | Share |
|---|---|---|
| ADU | 966 | 70% |
| room addition | 702 | 51% |
| junior ADU | 122 | 9% |
| second story | 40 | 3% |
Parsed from the permit's own type and work text. A permit can state more than one; many state none.
Sample rows
Anonymized: street address, permit number and any names removed. Subscribers get the full row with address, permit number and source link.
| Issued | ZIP | Permit type | Scope | Type | Declared value |
|---|---|---|---|---|---|
| 2026-10-10 | 91042 | Electrical / 1 or 2 Family Dwelling | electrical + addition/ADU | ADU | n/a |
| 2026-10-01 | 90272 | Bldg-Addition / 1 or 2 Family Dwelling | addition/ADU | room addition | $2,501 |
| 2026-09-23 | 90272 | Bldg-Addition / 1 or 2 Family Dwelling | addition/ADU | room addition | $150,000 |
| 2026-09-14 | 91316 | Bldg-Addition / 1 or 2 Family Dwelling | addition/ADU | room addition | $3,000 |
| 2026-09-03 | 90044 | Bldg-Addition / 1 or 2 Family Dwelling | addition/ADU | room addition | $75,000 |
| 2026-08-25 | 90032 | Bldg-Addition / 1 or 2 Family Dwelling | addition/ADU | ADU; room addition | $120,000 |
Source
- Los Angeles (LADBS building): LADBS Building Permits (Socrata pi9x-tg5x), published by Los Angeles Department of Building and Safety (LADBS). Source dataset. Collected window(s): Aug 16, 2026 – Oct 10, 2026. Last pulled Oct 18, 2026.
- Los Angeles (LADBS electrical): Permit records on data.lacity.org (dataset ysqd-apz7), published by Los Angeles (LADBS electrical). Source dataset. Collected window(s): Aug 16, 2026 – Oct 10, 2026. Last pulled Oct 18, 2026.
- Los Angeles (LADBS mechanical/plumbing): Permit records on data.lacity.org (dataset 67is-svtd), published by Los Angeles (LADBS mechanical/plumbing). Source dataset. Collected window(s): Aug 16, 2026 – Oct 10, 2026. Last pulled Oct 18, 2026.
Metric: Residential = the source marks the permit's use as residential (permits with commercial or unknown use are not counted). ADUs & Additions = the permit's type or work description matches the Curbside Signal ADU and addition rules. Counts exclude void or cancelled permits. Dates are the jurisdiction's permit issue date. Records are deduplicated on source and permit number. How we count. Part of the Los Angeles-Long Beach-Anaheim, CA metro: every trade × city page there.
The honest limit. A permit usually means the job is already sold. We say that up front. The value is what happens around it:
- Neighbor marketing around active jobs: same-age houses on the same street.
- Cross-trade follow-on demand: new roof → solar, gutters, insulation; remodel → HVAC, electrical, landscaping, pool; new build → pest, security, landscaping.
- Competitor intelligence: which contractors pull permits where (where the jurisdiction publishes it), and who to recruit as subs.
- Early-stage projects for commercial trades and GC subs.
Follow-on: ADUs and additions drive HVAC, electrical, plumbing, solar and landscaping work.
Other trades in Los Angeles, CA
Residential permits in the same window, by trade.
Questions
How many residential ADU and addition permits were issued in Los Angeles, CA recently?
1,371 residential ADU and addition permits in the public records we pulled, the 8 weeks ending Oct 10, 2026. Source: Los Angeles (LADBS building), Los Angeles (LADBS electrical), Los Angeles (LADBS mechanical/plumbing).
Which Los Angeles ZIP codes have the most ADU and addition permits?
90272 (56 permits), 91335 (51 permits), 91344 (48 permits), by residential ADU and addition permit count the 8 weeks ending Oct 10, 2026. 98 ZIP codes had at least one permit.
What is the median declared value of a residential ADU and addition permit in Los Angeles?
$50,000, across 1,077 permits that list a valuation. Declared values are what the applicant stated on the permit, not the contract price.
How do I get the Los Angeles ADU and addition permit list, and what does it cost?
Request a free sample for your ZIPs first. ZIP Pack is $29/mo for one trade and up to 5 ZIPs every Monday; Metro Feed is $99/mo for a whole metro and up to 3 trades, with daily alerts. Guarantee on every package: If a weekly file is late or missing, that month is free. If a month delivers under half the 8-week average permit count for your ZIPs and trade, the next month is free.
Los Angeles ADU and addition leads, every Monday
Send your trade and ZIP codes. We'll reply with a real sample from the public records we pull, or tell you plainly that we don't cover you yet.