J N Builds Inc
ADU builder based in Manhattan Beach. Licensed since 2019.
- License active
- Workers' comp on file
3 ADU jobs on Los Angeles permits, 2024. 212th most ADU permits of 271 contractors in Los Angeles.
What the public records show
From the state's license records and the city's permits, one question at a time.
| Question | Records show | Mark |
|---|---|---|
| Licensed? | License 1055529, active in the state's records on Sep 23, 2026General engineering, general building, plumbing, solarNo complaints or citations on the board's public record. | Checks out |
| Workers' comp? | Workers' comp policy on file with the stateThis covers their crew if someone is hurt. It is not insurance for your home. | On file |
| In business? | Licensed since 2019 | |
| Jobs on record | 3 ADU jobs on Los Angeles permits, 2024Every permit we have for them is ADU.They are based in Manhattan Beach. Work outside Los Angeles is not in these records.212th most ADU permits of 271 licensed contractors in Los Angeles. That counts jobs, not quality.Our Los Angeles permit records cover September 2023 to September 2026. |
Records: the state license board and City of Los Angeles permits.
State license board record
Last checked Oct 4, 2026. This may have changed. Check it on CSLB.
No complaints or citations on the board's public record.
Source: California Contractors State License Board, checked Oct 4, 2026. Look up license 1055529 on CSLB
Cost and timing
All ADU jobs in Los Angeles: $35,000 to $120,000
Half of 9,338 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Detached ADUs in Los Angeles: $46,000 to $121,000 (3,485 permits)
- Garage conversions in Los Angeles: $30,000 to $65,000 (3,524 permits)
- Junior ADUs in Los Angeles: $20,000 to $50,000 (768 permits)
How to read this range
Contractors write a job value on the permit form, and the city uses it to set the permit fee. It is not the contract price, and it is often lower than what you pay. A quarter of the permits list less than this range, and a quarter list more. Use it to see if a quote is in the normal range.
Permit value (not a price)
Their typical permit lists $119,500 (half list more, half less)
That is the figure written on the permit form, which can be far from what you pay. What ADU jobs cost in Los Angeles.
Get 2 or 3 written quotes.
Permit timeline
Across Los Angeles, a ADU permit stays open about about 12 months, from permit to final inspection
This is not how long the crew works at your home: most of it is waiting for the inspection. Ask them how many days the work takes. Waiting for the permit adds about about 4 months. How long ADU jobs take.
Track record
Where they work most
- 900291 job
- 900061 job
- 900161 job
Latest jobs
Permit values are what the contractor wrote on the permit form, not what the owner paid.
| Date | Work | ZIP | On the permit form |
|---|---|---|---|
| Sep 17, 2024 | ADUNew detached two (2) unit adu at rear of existing 10-unit m.f.d | 90029 | $253,000 |
| Apr 29, 2024 | ADUNew detached 2-unit adu, at rear of (e) 6-unit multifamily dwelling, p | 90006 | $119,500 |
| Jan 26, 2024 | ADU2 NEW DETACHED ADUS (44'-11"x20'-0") PER GCS 65852.2(e)(1)(D) AND LAMC | 90016 | $80,000 |
What to ask before you hire
About J N Builds Inc
- Ask what the warranty covers and for how long, in writing.
Worth asking any ADU builder
- Can you show me proof of liability insurance and your bond?
- Do you handle the plans, engineering and utility hookups, or do I?
- How long from permit to the final inspection on your last three ADUs?
- What is the payment schedule, and what is extra?
Get a quote from J N Builds Inc
Five quick questions. We pass your request to J N Builds Inc.
Request for J N Builds Inc
- Where
- Job
- Start
- Budget
- Goes to
You decide who to hire. Your details go only to the contractors you pick. How we use your details
Sent. We have your request.
We pass it to J N Builds Inc. Replies usually come within a few days.
Your job room keeps the request, your photos and every reply in one place, with an assistant that checks prices against city permits. Keep its link: it is the key to your job.
Open your job roomMore ADU builders near 90029 and 90006
- C S W F Construction Inc
- Mid Construction Group
- Moshe M Ben Porat
- Bichai Construction Corporation
- Castillo Construction
- D H R Builders Inc
See all 271 ADU builders in Los Angeles, ranked by jobs
Run this business? Claim this page to get requests by email and reply to homeowners here.