Build Tuff Construction
ADU builder based in Chatsworth. Licensed since 2021.
- License active
- Workers' comp on file
23 jobs on Los Angeles permits, 2024 to 2026: 11 ADUs, 8 home additions, 4 remodels. 20th 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 1076283, active in the state's records on Sep 23, 2026General 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 2021 | |
| Jobs on record | 23 jobs on Los Angeles permits, 2024 to 2026: 11 ADUs, 8 home additions, 4 remodelsThey are based in Chatsworth. Work outside Los Angeles is not in these records.20th 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 1076283 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 $80,000 (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
9 jobs in the last 12 months, about the same as 9 the year before
Where they work most
- 900263 jobs
- 900623 jobs
- 910403 jobs
- 900163 jobs
- 902922 jobs
Jobs by kind of work
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 18, 2026 | ADUConvert porton of attached garage to (2) attached accessory dwelling u | 91601 | $400,000 |
| Jul 21, 2026 | ADUConvert (e) den into a jadu , all work per eng | 91605 | $8,500 |
| Jul 10, 2026 | ADUNew construction detached irregular shaped 859 sf adu per lamc | 91335 | $150,000 |
| Jun 11, 2026 | AdditionConversion of (e) three car garage into a 2-story adu building- one ad | 90026 | $300,000 |
| Jun 11, 2026 | ADUConversion of (e) three car garage into a 2-story adu building- one ad | 90026 | $300,000 |
| May 28, 2026 | RemodelNew addition to (e) single family dwelling and remodel | 90064 | $120,000 |
| Mar 20, 2026 | AdditionAddition to and conversion of (e) detached garage to ADU per LA | 90062 | $80,000 |
| Mar 20, 2026 | ADUAddition to and conversion of (e) detached garage to ADU per LA | 90062 | $80,000 |
| Dec 16, 2025 | AdditionConvert (e) 162sf storage and 494sf addition to a detached accessory d | 90047 | $75,000 |
| Aug 26, 2025 | AdditionConvert (e) 20'-2" x 18'-4" carport to 1 adu, and a 25'-0" x | 91040 | $100,000 |
| Aug 26, 2025 | ADUConvert (e) 20'-2" x 18'-4" carport to 1 adu, and a 25'-0" x | 91040 | $100,000 |
| Jul 19, 2025 | Addition | 90292 | $100,000 |
| Jul 19, 2025 | ADU | 90292 | $100,000 |
| Mar 8, 2025 | Remodel16 Window and 9 door change-out (same size & type) for residential buildings | 90062 | $35,000 |
| Jan 14, 2025 | AdditionCONVERT (E) 20' X 18' CARPORT WITH 25'3" x 16'5" ADDITION INT | 91040 | $100,000 |
| Nov 12, 2024 | AdditionConvert (e) detached garage to (n) 453 sf accessory dwelling unit per | 90024 | $60,000 |
| Nov 12, 2024 | ADUConvert (e) detached garage to (n) 453 sf accessory dwelling unit per | 90024 | $60,000 |
| Nov 5, 2024 | ADUConvert existing attached garageof (e) sfd into attached jadu pe | 90045 | $65,000 |
| Jul 25, 2024 | Remodel(3) Bathroom remodel for residential buildings (no structural changes). INCLUDING MEPs; … | 90026 | $20,000 |
| Jul 17, 2024 | Remodel(2) Kitchen and (2) Bathroom remodel for residential buildings (no structural changes). INCLUDING… | 90045 | $32,000 |
| Jul 16, 2024 | ADUNEW DETACHED ADU PER MULTIPLE ADUs STATE LAW (1-STORY) | 90016 | $40,000 |
| Jun 24, 2024 | Addition | 90016 | $75,000 |
| Jun 24, 2024 | ADU | 90016 | $75,000 |
What to ask before you hire
About Build Tuff Construction
- 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 Build Tuff Construction
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