Adu Concepts
ADU builder based in Tarzana. Licensed since 2016.
- License active
- Workers' comp on file
37 jobs on Los Angeles permits, 2023 to 2026: 23 ADUs, 6 home additions, 3 seismic retrofits, 3 remodels, 2 roofing jobs. 6th 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 1018294, active in the state's records on Sep 23, 2026General engineering, general buildingNo 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 2016 | |
| Jobs on record | 37 jobs on Los Angeles permits, 2023 to 2026: 23 ADUs, 6 home additions, 3 seismic retrofits, 3 remodels, 2 roofing jobsThey are based in Tarzana. Work outside Los Angeles is not in these records.6th 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 1018294 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 $100,000 (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
8 jobs in the last 12 months, down from 13 the year before
Where they work most
- 900255 jobs
- 900424 jobs
- 900312 jobs
- 913562 jobs
- 900492 jobs
Jobs by kind of work
Latest jobs
Permit values are what the contractor wrote on the permit form, not what the owner paid.
A row marked ×2 or more stands for that many similar jobs on one day in one ZIP code.
| Date | Work | ZIP | On the permit form |
|---|---|---|---|
| Sep 14, 2026 | ADU, 325 sq ftConvert (E) 325 sqft Storage space into ADU per GCS 65852.2 and | 90038 | $25,000 |
| Sep 1, 2026 | ADUConvert portion of existing unit #1 into a 508 sf adu of an (e) | 90034 | $10,000 |
| Jun 22, 2026 | ADUNew detached adu | 91335 | $90,000 |
| May 4, 2026 | ADUConvert gym area into ADU of (E) apartment.PER GCS 65852.2(e)(1 | 90066 | $22,000 |
| Feb 13, 2026 | ADUConvert Existing 4-Tuck-Under Parking to Attached ADU in existi | 90025 | $125,000 |
| Feb 13, 2026 | ADUConvert Existing Tuck Under Parking into One ADU per ordinance | 90025 | $125,000 |
| Jan 16, 2026 | ADUConvert existing garage to ADU | 90019 | $100,000 |
| Sep 23, 2025 | ADUNew Detached ADU per ordinance | 90248 | $120,000 |
| Apr 22, 2025 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: VERIFY PROPOSED WORK DONE UNDER ADU CONVERSION… | 90025 | not stated |
| Mar 21, 2025 | Seismic retrofit (×2, same day)Soft-Story seismic retrofit per LABC Chapter 93: Verification of proposed work done under ADU… | 90025 | not stated each |
| Feb 27, 2025 | ADUNew detached ADU | 91601 | $120,000 |
| Feb 10, 2025 | Reroof, 28 squares (2,800 sq ft)Re-roof with Class A or B roof covering material weighing less than 6 pounds per sq | 91306 | $5,600 |
| Feb 2, 2025 | ADUConvert (e) detached garage into a (n) 340 sf adu per gcs 65852 | 90016 | $129,600 |
| Jan 22, 2025 | AdditionConvert (E) storage space to accessory dwelling unit per LAMC 12 | 90031 | $45,000 |
| Jan 22, 2025 | ADUConvert (E) storage space to accessory dwelling unit per LAMC 12 | 90031 | $45,000 |
| Jan 9, 2025 | ADUNew 2 story detached ADUs( 2 units) (26'9"x38') and garage | 90008 | $250,000 |
| Dec 30, 2024 | ADUNew 16'-5" x 37'-8" dettached accessory dwelling unit per gcs 65852.2 | 91367 | $80,000 |
| Dec 26, 2024 | ADUNew 2-story, 2-unit detached accessory dwelling units | 90024 | $200,000 |
| Dec 14, 2024 | ADUNew 2 story detached accessory dwelling unit with an attached s | 90043 | $162,000 |
| Oct 25, 2024 | ADUNew detached ADUs with garage at first floor per state law GCS | 90042 | $275,000 |
| Sep 5, 2024 | AdditionConversion of an (E) attached garage into two ADUs per state l | 90042 | $275,000 |
| Sep 5, 2024 | ADUConversion of an (E) attached garage into two ADUs per state l | 90042 | $275,000 |
| Jul 17, 2024 | Addition**ePlan** Addition and Remodel of (E) Single Family Dwelling | 91356 | $100,000 |
| Jul 17, 2024 | ADUPROPOSED 2 STORY ADU PER GCS 65852.2(e)(1)(B) AND LAMC 12.22 A.3 | 91356 | $360,000 |
| May 29, 2024 | Addition**ePlanLA** Convert existing aingle family dwelling into ADU and addit | 90049 | $75,000 |
| May 29, 2024 | ADU**ePlanLA** Convert existing aingle family dwelling into ADU and addit | 90049 | $75,000 |
| May 2, 2024 | AdditionConvert existing storage to ADU in existing apartment | 91405 | $40,000 |
| May 2, 2024 | ADUConvert existing storage to ADU in existing apartment | 91405 | $40,000 |
| Apr 2, 2024 | Reroof, 24 squares (2,400 sq ft)Re-roof with Class A or B roof covering material weighing less than 6 pounds per sq | 91406 | $7,000 |
| Mar 6, 2024 | ADUConvert storage space in (E) apartment to accessory dwelling uni | 90006 | $40,000 |
| Feb 15, 2024 | Addition, 310 sq ftConvert storage/laundry to ADU in Multi-Family - 310 sqft | 91325 | $40,000 |
| Feb 15, 2024 | ADU, 310 sq ftConvert storage/laundry to ADU in Multi-Family - 310 sqft | 91325 | $40,000 |
| Dec 18, 2023 | Remodel1- bathroom remodel for residential buildings (no structural changes) | 90042 | $2,500 |
| Nov 20, 2023 | ADUCONVERT (E) STORAGE ROOM TO AN ATTACHED ADU PER CA Govt | 90062 | $40,000 |
| Oct 6, 2023 | Remodel1Kitchen/bathroom (2 ) remodel for residential buildings (no structural changes) | 91604 | $25,000 |
| Aug 8, 2023 | RemodelInterior remodel to existing single-family dwelling including foundation reinforcement of footings,… | 91343 | $30,000 |
What to ask before you hire
About Adu Concepts
- 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 Adu Concepts
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