Master Plan Construction Inc
ADU builder working in Los Angeles. Licensed since 2017.
- License active
- Workers' comp on file
18 jobs on Los Angeles permits, 2023 to 2026: 8 ADUs, 5 roofing jobs, 3 home additions, 2 remodels. 44th 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 1027598, 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 2017 | |
| Jobs on record | 18 jobs on Los Angeles permits, 2023 to 2026: 8 ADUs, 5 roofing jobs, 3 home additions, 2 remodels44th 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 1027598 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 $75,000 (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
6 jobs in the last 12 months, up from 5 the year before
Where they work most
- 913444 jobs
- 916072 jobs
- 914052 jobs
- 913062 jobs
- 913252 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 |
|---|---|---|---|
| Apr 30, 2026 | AdditionAddition to (E) single family and remodel | 91607 | $150,000 |
| Apr 12, 2026 | Reroof, 35 squares (3,500 sq ft) | 91344 | $7,000 |
| Apr 7, 2026 | ADUConvert portion of (E) Single Family Dwelling (w/ attached ADU) | 91344 | $65,000 |
| Dec 23, 2025 | Reroof, 10 squares (1,000 sq ft) | 91304 | $2,000 |
| Oct 22, 2025 | Reroof, 5 squares (500 sq ft) | 91405 | $11,441 |
| Oct 22, 2025 | Remodel, 5 squares (500 sq ft) | 91405 | $11,441 |
| Sep 17, 2025 | RemodelAddition to (E) single family and remodel | 91607 | $150,000 |
| Aug 30, 2025 | ADUConvert (e) junior accessory dwelling unit attached to (e) sfd into (n | 91344 | not stated |
| Jul 14, 2025 | ADU(n) detached 1-story ADU w/ att garage per LAMC 12.22 A.33 (c) | 91311 | $263,304 |
| May 12, 2025 | ADU (×2, same day)New detached 1-story adu with attached 2-car garage per ca 658 | 91306 | $150,000 each |
| Sep 5, 2024 | Reroof, 25 squares (2,500 sq ft) | 91316 | $5,000 |
| May 22, 2024 | ADUConvert existing atached garage to Junior Accessory Dwelling Un | 91344 | $40,000 |
| May 8, 2024 | ADU, 379 sq ftConvert the existing garage into an ADU (379SQFT) PER STATE LAW | 91343 | $40,000 |
| Mar 1, 2024 | AdditionReduce rear bedroom by 72 sf, interior remodel in master bedroom | 91325 | $35,000 |
| Oct 26, 2023 | AdditionCovert (E) Garage/Storage to ADU with 1st and 2nd story additi | 90064 | $75,000 |
| Oct 26, 2023 | ADUCovert (E) Garage/Storage to ADU with 1st and 2nd story additi | 90064 | $75,000 |
| Jun 14, 2023 | Reroof, 20 squares (2,000 sq ft) | 91325 | $4,000 |
What to ask before you hire
About Master Plan Construction 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 Master Plan Construction Inc
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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.
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