Cal - Quake Construction Inc
Seismic retrofit contractor based in Los Angeles. Licensed since 1999.
- License active
- Workers' comp on file
41 jobs on Los Angeles permits, 2023 to 2026: 31 seismic retrofits, 8 ADUs, 2 home additions. 9th 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 759817, 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 1999 | |
| Jobs on record | 41 jobs on Los Angeles permits, 2023 to 2026: 31 seismic retrofits, 8 ADUs, 2 home additions9th 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 759817 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 $45,000 (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
8 jobs in the last 12 months, down from 9 the year before
Where they work most
- 900364 jobs
- 913443 jobs
- 914053 jobs
- 916073 jobs
- 900083 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 |
|---|---|---|---|
| Sep 11, 2026 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: (2) SPECIAL CANTILEVERED COLUMNS WITH GRADE BEAMS | 91344 | $60,000 |
| Jun 29, 2026 | Seismic retrofitSupplemental to Soft-Story seismic retrofit permit 22016-10000-16400: Change location of SCC-3 due… | 91405 | not stated |
| Jun 22, 2026 | Seismic retrofit | 90025 | $120,000 |
| Mar 17, 2026 | ADUConversion of (e) 19' x 25'-3" garage to one accessory dwelling unit p | 91607 | $60,000 |
| Dec 16, 2025 | ADUNew 2-story adu per lamc 12.22 a.33 (c)-(d) | 90036 | $90,000 |
| Oct 15, 2025 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Install Steel Moment Frames at two elevations -… | 91402 | $200,000 |
| Oct 10, 2025 | ADU(N) ADU ON TOP OF (N) TWO CAR DETACHED GARAGE PER LAMC 12.22 A.33 (c) | 90036 | $230,000 |
| Oct 5, 2025 | Seismic retrofit | 90033 | $100,000 |
| Aug 26, 2025 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: NEW (1) SPECIAL CANTILEVERED COLUMN W/ GRADE… | 90034 | $25,000 |
| Aug 7, 2025 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: MANDATORY SOFT STORY RETROFIT AT OPEN FRONT… | 90008 | $16,000 |
| Jun 30, 2025 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: USING (1) SPECIAL CANTILEVERED COLUMN WITH GRADE… | 90066 | $20,000 |
| Apr 23, 2025 | Seismic retrofitFoundation seismic retrofit by sistering foundation for existing single family dwelling | 90025 | $5,000 |
| Apr 11, 2025 | ADUConverting existing storage room to ADU. PART OF APARTMENT BUILDING | 90047 | $20,000 |
| Feb 25, 2025 | ADUConvert existing attached garage into an accessory dwelling un | 90066 | $30,000 |
| Dec 24, 2024 | Seismic retrofitVoluntary foundation retrofit of existing dwelling per engineer design | 90029 | $5,500 |
| Nov 15, 2024 | Seismic retrofitVoluntary foundation retrofit to existing single family dewlling | 90064 | $30,000 |
| Nov 12, 2024 | Seismic retrofit | 90065 | $100,000 |
| Aug 21, 2024 | Seismic retrofitVoluntary retrofit per ladbs standard detail #1 and engineer detail | 90026 | $10,000 |
| Jul 29, 2024 | AdditionBuild a second story ADU on top of existing garage in existing multi-f | 90036 | $100,000 |
| Jul 29, 2024 | ADUBuild a second story ADU on top of existing garage in existing multi-f | 90036 | $100,000 |
| Apr 22, 2024 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Supplemental Permit for 18016-10000-04710 to… | 91324 | $1,000 |
| Mar 12, 2024 | Seismic retrofit | 90027 | $120,000 |
| Mar 7, 2024 | AdditionConvert existing storage to new accessory dwelling unit per la | 91344 | $10,000 |
| Mar 7, 2024 | ADUConvert existing storage to new accessory dwelling unit per la | 91344 | $10,000 |
| Feb 26, 2024 | Seismic retrofitSupplemental to Soft Story Retrofit permit 18016-10000-39920: Revised shear wall design to have… | 91411 | $10,000 |
| Feb 22, 2024 | Seismic retrofit (×2, same day) | 91316 | $60,000 each |
| Jan 26, 2024 | Seismic retrofitSoft-Story Seismic Retrofit per LABC Chapter 93: INSALL (1) SPECIAL CANTILEVERED COLUMN, (1) WOOD… | 90048 | $60,000 |
| Jan 23, 2024 | Seismic retrofitFoundation retrofit of (e) single family dwelling per engineer design | 90008 | $15,000 |
| Jan 12, 2024 | Seismic retrofitSoft story retrofit per labc ch 93. insert 2 cantilever columns | 90008 | $30,000 |
| Dec 26, 2023 | Seismic retrofitSeismic retrofit using (1) special cantilevered column & (1) ordinary moment frame w/ grade beam to… | 90291 | $20,000 |
| Dec 21, 2023 | ADUConvert partial existing garages on 1st floor to (1) adu 635 sf in an | 90017 | $100,000 |
| Nov 24, 2023 | Seismic retrofit | 90004 | $40,000 |
| Nov 7, 2023 | Seismic retrofitSupplemental to Soft-Story seismic retrofit permit 18016-10000-38494t: Change of engineer of Record | 90019 | not stated |
| Nov 3, 2023 | Seismic retrofit | 91405 | $80,000 |
| Oct 26, 2023 | Seismic retrofit | 91607 | not stated |
| Sep 14, 2023 | Seismic retrofitSupplemental to Soft Story retrofit permit 20016-10000-10370: Field Change: Updated framing plans… | 90027 | not stated |
| Sep 12, 2023 | Seismic retrofit | 91607 | $60,000 |
| Aug 4, 2023 | Seismic retrofit | 91405 | $150,000 |
| Jul 11, 2023 | Seismic retrofitSupplemental to Soft-Story seismic retrofit permit 19016-10000-10344. Field correction change for… | 90048 | not stated |
| Jun 15, 2023 | Seismic retrofit | 90049 | $50,000 |
What to ask before you hire
About Cal - Quake Construction 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?
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