Quakestrong
Seismic retrofit contractor based in Los Angeles. Licensed since 2018.
- License active
22 jobs on Los Angeles permits, 2023 to 2026: 19 seismic retrofits, 2 ADUs, 1 remodel. 13th 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 1037437, active in the state's records on Sep 23, 2026General buildingNo complaints or citations on the board's public record. | Checks out |
| In business? | Licensed since 2018 | |
| Jobs on record | 22 jobs on Los Angeles permits, 2023 to 2026: 19 seismic retrofits, 2 ADUs, 1 remodel13th 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 1037437 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, about the same as 3 the year before
Where they work most
- 900683 jobs
- 900242 jobs
- 900042 jobs
- 916022 jobs
- 900082 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 7, 2026 | RemodelAddition and remodel to (e) sfd w/ attached garage | 90024 | $100,000 |
| Jan 29, 2026 | Seismic retrofitSoft story retrofit per labc ch 93 using special steel cantilever column | 90019 | $50,000 |
| Jan 20, 2026 | ADU(n) detached 1-story 2 unit ADUs per CA gov | 91606 | $128,500 |
| Apr 23, 2025 | ADUNEW (40'-0"x 25'-0") ONE- STORY DETACHED TWO ACCESSORY DWELLING UNIT | 90065 | $150,000 |
| Oct 11, 2024 | Seismic retrofitSoft story retrofit as per labc ch 93. (n) wood shear walls and sccs and stronge wall | 90004 | $75,000 |
| Oct 11, 2024 | Seismic retrofitTO REDUCE NUMBER OF PARKING DUE TO MANDETORY SOFT STORY RETROFIT FROM 7 to 5 PER AB2097 | 90004 | not stated |
| Apr 11, 2024 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Supplemental permit for Permit 17016-10000-03822,… | 91602 | not stated |
| Mar 14, 2024 | Seismic retrofitSoft story retrofit as per labc ch | 90008 | not stated |
| Feb 29, 2024 | Seismic retrofitSoft-story retrofit as per labc ch 93 (n) special steel cantilever columns | 90027 | $80,000 |
| Feb 26, 2024 | Seismic retrofitSoft-story retrofit as per labc ch 93. (n) sccs | 90027 | $50,000 |
| Feb 9, 2024 | Seismic retrofitSoft story retrofit as per labc ch | 90068 | not stated |
| Jan 16, 2024 | Seismic retrofitSoft story retrofit per lamc div | 91602 | $120,000 |
| Dec 7, 2023 | Seismic retrofitSoft-story retrofit as per labc ch 93. 3 (n) sccs | 90025 | $60,000 |
| Oct 25, 2023 | Seismic retrofitSoft story retrofit as per labc ch 93. supplemental permit to 22016-10000-23530. back of the… | 90024 | $35,000 |
| Oct 25, 2023 | Seismic retrofitSoft-story retrofit per labc chapter 93. install shear wall and moment frame | 90007 | $40,000 |
| Oct 25, 2023 | Seismic retrofitRemoval of parking per ab 2097refer to soft story retrofit permit number 23016-10000-14840 | 90007 | not stated |
| Sep 19, 2023 | Seismic retrofitSoft-story retrofit as per labc ch 93. 6 (n) sccs | 90008 | $80,000 |
| Sep 5, 2023 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Supplemental permit to 22016-10000-13360. Detail… | 90035 | not stated |
| Aug 28, 2023 | Seismic retrofitSoft story retrofit as ber labc ch | 90068 | not stated |
| Jul 28, 2023 | Seismic retrofitSoft-story retrofit as per labc ch.93. install 2 (n) sccs & shear walls | 90025 | $40,000 |
| Jun 14, 2023 | Seismic retrofitSoft story retrofit as per labc ch.93 using 4 shear walls of the tuck-under parking region at… | 90068 | $25,000 |
| Jun 12, 2023 | Seismic retrofitSOFT-STORY RETROFIT AS PER LABC CH 9. INSTALL (N) SSWs | 90034 | $40,000 |
What to ask before you hire
About Quakestrong
- 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 Quakestrong
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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.
Open your job roomMore seismic retrofit contractors near 90068 and 90024
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See all 80 seismic retrofit contractors in Los Angeles, ranked by jobs
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