Ces4 Construction
Seismic retrofit contractor based in Tarzana. Licensed since 2018.
- License active
- Workers' comp on file
35 jobs on Los Angeles permits, 2023 to 2026: 28 seismic retrofits, 4 ADUs, 2 remodels, 1 home addition. 10th 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 1042127, 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 2018 | |
| Jobs on record | 35 jobs on Los Angeles permits, 2023 to 2026: 28 seismic retrofits, 4 ADUs, 2 remodels, 1 home additionThey are based in Tarzana. Work outside Los Angeles is not in these records.10th 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 1042127 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 $40,000 (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
5 jobs in the last 12 months, up from 4 the year before
Where they work most
- 900345 jobs
- 900664 jobs
- 913033 jobs
- 900393 jobs
- 900383 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 2, 2026 | ADUCONVERT (E) STORAGE TO ACCESSORY DWELLING UNIT PER CA Govt | 90017 | $20,000 |
| Apr 4, 2026 | AdditionNew addition with structural remodel to (e) 1-story sfd to have | 91303 | $130,000 |
| Apr 4, 2026 | ADUNEW TWO-UNIT ADUs PER CA Govt | 91303 | $1,200 |
| Mar 11, 2026 | ADUSfd w/ attached adu (very low income unit) located at rear | 90034 | $500,000 |
| Sep 30, 2025 | ADUProposed three story Duplex and attached ADU per ordinance | 90015 | $550,000 |
| Jul 23, 2025 | Seismic retrofitNDC -2499 eplan SEISMIC RETROFIT OF (E) CONCRETE PODIUM LEVEL TO COMPLY WITH NON-DUCTILE CONCRETE… | 90046 | $50,000 |
| Jun 23, 2025 | Seismic retrofit | 91604 | not stated |
| Apr 7, 2025 | Seismic retrofitSoft story retrofit per labc ch | 91604 | $20,000 |
| Sep 24, 2024 | RemodelNew addition with structural remodel to (e) 1-story sfd to have 2nd dwelling unit per sb 9 (two… | 91303 | $130,000 |
| Jul 16, 2024 | Seismic retrofitSoft-Story Seismic Retrofit per LABC Chapter 93: Install One (1) Special Steel Cantilever Column | 91602 | $20,000 |
| Jul 5, 2024 | Seismic retrofitSoft story retrofit as per labc ch | 90039 | $20,000 |
| Jul 5, 2024 | Seismic retrofitSoft story retrofit as per labc ch | 90039 | $20,000 |
| Jul 5, 2024 | Seismic retrofitSoft story retrofit as per labc ch | 90039 | $20,000 |
| Mar 15, 2024 | RemodelBathroom (1) remodel for residential buildings (no structural changes)."COMPLY WITH DEPARTMENT… | 91316 | $3,000 |
| Dec 27, 2023 | Seismic retrofitSoft story retrofit as per labc chapter 93. install (n) sccs | 90038 | $50,000 |
| Nov 6, 2023 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: 2 (N) SCCS | 91401 | $70,000 |
| Sep 12, 2023 | Seismic retrofitSupplemental to Soft-Story seismic retrofit permit 20016-10000-22161: Change of design from shear… | 90049 | not stated |
| Aug 30, 2023 | Seismic retrofitNo details on the permit | 90066 | not stated |
| Aug 29, 2023 | Seismic retrofit | 90049 | $50,000 |
| Aug 28, 2023 | Seismic retrofitNo details on the permit | 90066 | not stated |
| Aug 23, 2023 | Seismic retrofit | 90005 | not stated |
| Aug 22, 2023 | Seismic retrofitNo details on the permit | 90034 | not stated |
| Aug 22, 2023 | Seismic retrofitNo details on the permit | 90038 | not stated |
| Aug 10, 2023 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Install New Special Steel Cantilever Columsn and… | 90049 | $60,000 |
| Aug 1, 2023 | Seismic retrofit | 90034 | not stated |
| Aug 1, 2023 | Seismic retrofit | 90020 | not stated |
| Jul 20, 2023 | Seismic retrofitSoft story retrofit as per labc ch 93 to install 1 scc | 90005 | $20,000 |
| Jul 20, 2023 | Seismic retrofitSoft-story seismic retrofit per LAMC division 93. New single-story steel cantilevered columns… | 90034 | $40,000 |
| Jul 20, 2023 | Seismic retrofitSoft story retrofit per LABC CH 93 Install (4) SCCS | 90020 | $60,000 |
| Jul 20, 2023 | Seismic retrofitSoft story retrofit as per labc ch | 90066 | $20,000 |
| Jul 20, 2023 | Seismic retrofitSoft story retrofit as per labc chapter 93 install (2) special cantilever column system | 90066 | $40,000 |
| Jul 20, 2023 | Seismic retrofitSoft story retrofit as per labc ch | 90034 | $40,000 |
| Jul 20, 2023 | Seismic retrofitSoft story retrofit as per labc ch | 90038 | $40,000 |
| Jun 30, 2023 | Seismic retrofit | 91606 | $50,000 |
| Jun 13, 2023 | Seismic retrofitSupplemental to 18016 - 10000 - 25651 "soft story retrofit as per labc chapter 93. install steel… | 91423 | not stated |
What to ask before you hire
About Ces4 Construction
- 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 Ces4 Construction
Five quick questions. We pass your request to Ces4 Construction.
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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 90034 and 90066
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See all 80 seismic retrofit contractors in Los Angeles, ranked by jobs
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