One Structural Inc
Seismic retrofit contractor based in Tarzana. Licensed since 2015.
- License active
- Workers' comp on file
45 jobs on Los Angeles permits, 2023 to 2026: 38 seismic retrofits, 3 remodels, 3 ADUs, 1 solar installation. 7th most retrofit permits of 80 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 1003868, active in the state's records on Sep 23, 2026General building, painting, plumbingNo 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 2015 | |
| Jobs on record | 45 jobs on Los Angeles permits, 2023 to 2026: 38 seismic retrofits, 3 remodels, 3 ADUs, 1 solar installationThey are based in Tarzana. Work outside Los Angeles is not in these records.7th most retrofit permits of 80 licensed contractors in Los Angeles. That counts jobs, not quality.Our Los Angeles permit records cover June 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 1003868 on CSLB
Cost and timing
All retrofit jobs in Los Angeles: $20,000 to $60,000
Half of 1,205 city permits list an amount in this range. Permit amounts are often lower than what you pay.
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 $50,000 (half list more, half less)
That is the figure written on the permit form, which can be far from what you pay. What retrofit jobs cost in Los Angeles.
Get 2 or 3 written quotes.
Permit timeline
Across Los Angeles, a retrofit permit stays open about about 6 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 retrofit jobs take.
Track record
3 jobs in the last 12 months, down from 15 the year before
Where they work most
- 914113 jobs
- 900573 jobs
- 916013 jobs
- 914013 jobs
- 900342 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 |
|---|---|---|---|
| Jul 16, 2026 | Seismic retrofitSoft story retrofit as per labc ch 93. seismic reinforcement at building parking garage using (2)… | 90034 | $35,000 |
| Feb 24, 2026 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93 and 94: Soft Story Seismic Reinforcement at… | 91604 | $350,000 |
| Nov 5, 2025 | RemodelExterior Remodel: Balcony repair by replacing sub-deck sheathing, waterproofing, and guardrail at… | 91105 | $4,000 |
| Sep 5, 2025 | ADUNew 2nd story addition of two accessory dwelling units to (e) d | 90004 | $40,000 |
| Aug 19, 2025 | Seismic retrofit (×2, same day) | 90710 | $50,000 each |
| Jul 23, 2025 | Seismic retrofit | 91331 | $190,000 |
| Jun 4, 2025 | RemodelStructural remodel to replace floor beam in (e) single family dwelling | 90077 | $5,000 |
| Apr 29, 2025 | Seismic retrofit | 90291 | $30,000 |
| Apr 24, 2025 | Seismic retrofit | 90066 | $60,000 |
| Apr 22, 2025 | Seismic retrofitSuppelemtal to soft story retrofit permit 19016-10000-01521 change grade beam and column size to… | 91411 | not stated |
| Mar 25, 2025 | Seismic retrofitSoft-story Seismic Retrofit per LAMC division 93. Supplemental Permit for change of design to… | 91406 | not stated |
| Feb 17, 2025 | SolarNEW 2-STORY DETACHED ADUs (2 UNIT) AT REAR OF LOT PER CA 65852.2(e)(1)(D) and applicable part of… | 90034 | $267,246 |
| Feb 7, 2025 | Seismic retrofit | 91405 | $90,000 |
| Jan 22, 2025 | Seismic retrofit | 90038 | $45,000 |
| Jan 15, 2025 | Seismic retrofit | 91411 | $30,000 |
| Jan 15, 2025 | Seismic retrofit | 90066 | $35,000 |
| Oct 3, 2024 | Seismic retrofit | 90025 | $50,000 |
| Aug 22, 2024 | Seismic retrofit | 90027 | $60,000 |
| Aug 2, 2024 | Seismic retrofit | 90057 | $60,000 |
| Jun 4, 2024 | RemodelInterior kitchen remodel/repair (no changes in walls or openings). 2 bathroom(s).Bathroom remodel… | 90077 | $3,000 |
| May 30, 2024 | Seismic retrofit | 90019 | $55,000 |
| May 30, 2024 | Seismic retrofitSoft-Story Seismic Retrofit per LABC Chapter 93: of Suilding Parking garage using (4) Special… | 91411 | $80,000 |
| May 22, 2024 | Seismic retrofit | 91606 | $40,000 |
| Apr 22, 2024 | Seismic retrofit | 90038 | $60,000 |
| Apr 16, 2024 | ADUCONVERT (E) CARPORT INTO AN ACCESSORY DWELLING UNIT PER CA Govt | 91601 | $34,500 |
| Apr 16, 2024 | Seismic retrofitSoft-Story Seismic Retrofit per LABC Chapter 93: Install two (2) special cantilevered columns | 90063 | $50,000 |
| Mar 19, 2024 | Seismic retrofit | 90065 | $60,000 |
| Mar 19, 2024 | Seismic retrofit | 90065 | $30,000 |
| Feb 28, 2024 | ADUADU apartment | 91401 | $45,000 |
| Jan 18, 2024 | Seismic retrofit | 91605 | $10,000 |
| Jan 5, 2024 | Seismic retrofitSoft-Story Seismic Retrofit per LABC Chapter 93: Install (3) Wood Shear Walls | 90025 | not stated |
| Jan 5, 2024 | Seismic retrofit | 91401 | $30,000 |
| Jan 4, 2024 | Seismic retrofit | 91401 | $30,000 |
| Dec 8, 2023 | Seismic retrofit | 90024 | $60,000 |
| Nov 9, 2023 | Seismic retrofit | 91601 | $55,000 |
| Oct 27, 2023 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Supplemental to 23016-10000-18818: Moment frame… | 90057 | not stated |
| Sep 5, 2023 | Seismic retrofitSupplemental to Soft-Story seismic retrofit permit 23016-10000-13348. Field Change | 90046 | not stated |
| Aug 31, 2023 | Seismic retrofit | 90057 | $80,000 |
| Jul 18, 2023 | Seismic retrofit | 90046 | $55,000 |
| Jul 17, 2023 | Seismic retrofit | 90006 | $50,000 |
What to ask before you hire
About One Structural Inc
- Ask what the warranty covers and for how long, in writing.
Worth asking any seismic retrofit contractor
- Can you show me proof of liability insurance and your bond?
- Is the plan engineered, or does it follow the city's standard plan?
- How many anchor bolts and wall panels will you install, and where?
- Who pulls the permit, and who meets the inspector?
Get a quote from One Structural Inc
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Open your job roomMore seismic retrofit contractors near 91411 and 90057
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See all 80 seismic retrofit contractors in Los Angeles, ranked by jobs
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