Construction Unlimited
ADU builder based in San Mateo. Licensed since 1990.
- License active
- No workers' comp: the business told the state it has no employees
6 jobs on San Francisco permits, 2021 to 2024: 3 ADUs, 3 remodels. 20th most ADU permits of 35 contractors in San Francisco.
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 584768, active in the state's records on Sep 23, 2026General buildingNo complaints or citations on the board's public record. | Checks out |
| Workers' comp? | No workers' comp: the business told the state it has no employeesThis covers their crew if someone is hurt. It is not insurance for your home. | Ask them |
| In business? | Licensed since 1990 | |
| Jobs on record | 6 jobs on San Francisco permits, 2021 to 2024: 3 ADUs, 3 remodelsThey are based in San Mateo. Work outside San Francisco is not in these records.20th most ADU permits of 35 licensed contractors in San Francisco. That counts jobs, not quality.Our San Francisco permit records cover September 2021 to September 2026. |
Records: the state license board and City of San Francisco 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 584768 on CSLB
Cost and timing
All ADU jobs in San Francisco: $40,000 to $180,000
Half of 869 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Detached ADUs in San Francisco: $40,000 to $190,000 (33 permits)
- Garage conversions in San Francisco: $30,000 to $153,000 (28 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 $150,000 (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 San Francisco.
Get 2 or 3 written quotes.
Permit timeline
Across San Francisco, a ADU permit stays open about about 15 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 7 months. How long ADU jobs take.
Track record
Jobs per quarter
Where they work most
- 941345 jobs
- 941021 job
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 |
|---|---|---|---|
| Aug 8, 2024 | ADUErect a 3-story, type 5b, multi-family building containing 2 new dwelling units per sb-9 and 1 new… | 94134 | $282,000 |
| May 15, 2023 | RemodelKitchen bath room remodel: fire dagmage around stove in kitchen cottage (241 waller). note:… | 94102 | $23,000 |
| Jan 12, 2022 | RemodelRemodel (e) single family home | 94134 | $60,000 |
| Dec 1, 2021 | RemodelRemodel of (e) single family home to provide independent access to (n) detached adu per separate… | 94134 | $150,000 |
| Dec 1, 2021 | ADU(n) streamlined detached accessory dwelling unit | 94134 | $150,000 |
| Dec 1, 2021 | ADURemodel of (e) single family home to provide independent access to (n) detached adu per separate… | 94134 | $150,000 |
What to ask before you hire
About Construction Unlimited
- Ask who will do the work. Anyone they pay to work on your home must be covered by workers' comp.
- 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 Construction Unlimited
Five quick questions. We pass your request to Construction Unlimited.
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We pass it to Construction Unlimited. 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 94134 and 94102
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- Area Development Inc.
See all 35 ADU builders in San Francisco, ranked by jobs
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