S M Development Company Inc
ADU builder based in Sun Valley. Licensed since 1983.
- License active
- Workers' comp on file
17 jobs on Los Angeles permits, 2023 to 2026: 5 ADUs, 4 remodels, 4 roofing jobs, 4 home additions. 106th 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 450270, active in the state's records on Sep 23, 2026General buildingThe board's public record lists 1 item. See the record below. | 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 1983 | |
| Jobs on record | 17 jobs on Los Angeles permits, 2023 to 2026: 5 ADUs, 4 remodels, 4 roofing jobs, 4 home additionsThey are based in Sun Valley. Work outside Los Angeles is not in these records.106th 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.
How to read this
The Contractors State License Board lists complaints it has sent for legal action, citations it has issued, and warning letters. A complaint or accusation is an allegation, not a finding. A citation is the board's finding that a rule was broken; the contractor can appeal it. Complaints closed in the contractor's favor are never listed. Most contractors have no items.
Citation: resolved, as of Oct 4, 2026Jul 15, 2024 · Citation 2 2023 1109
The board issued a citation on Jul 15, 2024. The contractor did what the citation required.
Listed: failed to exercise Qualifier's responsibility; contracted with non-licensee
Source: California Contractors State License Board, checked Oct 4, 2026. Look up license 450270 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 $122,000 (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, up from 3 the year before
Where they work most
- 913352 jobs
- 913442 jobs
- 913522 jobs
- 914062 jobs
- 913242 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 |
|---|---|---|---|
| Jul 9, 2026 | RemodelNo details on the permit | 91335 | $9,000 |
| Jun 15, 2026 | Reroof, 31 squares (3,100 sq ft) | 91344 | $6,200 |
| Jun 5, 2026 | AdditionNo details on the permit | 91352 | $9,000 |
| Jun 3, 2026 | Reroof, 31 squares (3,100 sq ft) | 91344 | $9,300 |
| May 21, 2026 | Remodel<ePLAN>REMODEL & 7'5"X40'7" 1ST FLOOR & 31'9"X40'7" IRREGULAR SHAPED 2ND FLOOR ADDITION TO SINGLE… | 91411 | $170,000 |
| Apr 13, 2026 | Remodel1 bathroom(s).Bathroom remodel for residential buildings (no structural changes) | 91352 | not stated |
| Feb 17, 2026 | AdditionAddition of (40' x 14') trellis patio cover to single family dwelling | 91303 | $90,000 |
| Jan 31, 2026 | ADUNew all electric detached accessory dwelling unit per lamc 12.22 a.33 | 91306 | $110,000 |
| Dec 3, 2025 | ADU(n) 1-story duplex w/ attached accessory dwelling unit per gcs 65852.2 | 91342 | $159,000 |
| Apr 8, 2025 | RemodelAddition and remodel to existing sfd | 90066 | $200,000 |
| Apr 3, 2025 | ADUNew 32' x 38' accessory dwelling unit | 91335 | $122,000 |
| Dec 9, 2024 | Reroof, 10 squares (1,000 sq ft)Re-roof with Class A or B material weighing less than 6 pounds per sq | 90018 | $10,000 |
| Apr 18, 2024 | AdditionNew detached accessory dwelling unit addition to (e) garage per | 91406 | $120,000 |
| Apr 18, 2024 | ADUNew detached accessory dwelling unit addition to (e) garage per | 91406 | $120,000 |
| Oct 6, 2023 | AdditionAddition of 2-story Accessory Dwelling Unit to existing garag | 91324 | $135,000 |
| Oct 6, 2023 | ADUAddition of 2-story Accessory Dwelling Unit to existing garag | 91324 | $135,000 |
| Sep 8, 2023 | Reroof, 12 squares (1,200 sq ft) | 91402 | $3,600 |
What to ask before you hire
About S M Development Company 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 S M Development Company Inc
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