Optimum Seismic Inc
Seismic retrofit contractor based in Vernon. Licensed since 2016.
- License active
- Workers' comp on file
75 jobs on Los Angeles permits, 2023 to 2026: 72 seismic retrofits, 2 ADUs, 1 remodel. 3rd most retrofit permits of 80 contractors in Los Angeles.
What the records show vs. what they say
The public record next to the business's own words.
| Question | Records show | They say | Mark |
|---|---|---|---|
| Licensed? | License 1012702, active in the state's records on Sep 23, 2026General engineering, general buildingNo complaints or citations on the board's public record. | Shows license 1012702 on its website | 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 2016 | Says operating since 1984 | Ask them |
| Jobs on record | 75 jobs on Los Angeles permits, 2023 to 2026: 72 seismic retrofits, 2 ADUs, 1 remodelThey are based in Vernon. Work outside Los Angeles is not in these records.3rd 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. |
In their words
- Services: Seismic retrofit engineering, Soft-story retrofits, Balcony seismic engineering, Metal fabrication for seismic upgrades
and 4 more
Non-ductile concrete building retrofits, Unreinforced masonry structure retrofits, Tilt-up building retrofits, Steel frame building retrofits - President/CEO is Mir Mohamad Ali Vahdani
- Chief Operating Officer and Co-Founder is Ali Sahabi
- Certified: BBB Accredited (a maker's or trade group's program; each lists its members on its own website)
- Works in: Los Angeles, Vernon, California
Records: the state license board and City of Los Angeles permits. They say: optimumseismic.com, read October 2026, summed up by us. We checked the site is theirs (it shows their license on record). We have not checked that the claims are true.
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 1012702 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
10 jobs in the last 12 months, down from 14 the year before
Where they work most
- 900259 jobs
- 900357 jobs
- 900666 jobs
- 902915 jobs
- 902934 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 15, 2026 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Supplemental to permit 18016-10000-00872 due to… | 90230 | not stated |
| Jul 17, 2026 | Seismic retrofit | 90291 | $40,000 |
| Jun 29, 2026 | RemodelExterior remodel to repair exterior balconies in (e) apartment with attached garage | 90049 | $7,000 |
| May 15, 2026 | Seismic retrofit | 90068 | $20,000 |
| May 15, 2026 | Seismic retrofit | 90025 | $40,000 |
| Mar 25, 2026 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Install 1 SCC | 90068 | $20,000 |
| Feb 11, 2026 | Seismic retrofit | 91401 | $70,000 |
| Feb 10, 2026 | Seismic retrofit | 91403 | $50,000 |
| Oct 16, 2025 | Seismic retrofitVoluntary seismic retrofit work to include out-of-plan wall anchorage and cross-tie upgrades per… | 91311 | $100,000 |
| Oct 3, 2025 | Seismic retrofit | 90293 | $70,000 |
| Aug 11, 2025 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: - Supplemental Plan Check for 21016-10000-05463:… | 90007 | not stated |
| Jul 22, 2025 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Provide 2 Special Steel Cantilever Columns | 90019 | $45,000 |
| Jun 17, 2025 | ADUConvert existing Rec' Room on 2nd floor to accessory dwelling unit per | 90066 | $45,000 |
| May 14, 2025 | Seismic retrofit | 90035 | $55,000 |
| Apr 29, 2025 | Seismic retrofit | 90059 | $25,000 |
| Jan 31, 2025 | Seismic retrofitSoft story retrofit as per div 93. verification to be exempt from soft story retrofit ordinance per… | 91605 | not stated |
| Jan 7, 2025 | Seismic retrofit | 90046 | $25,000 |
| Dec 26, 2024 | Seismic retrofit | 90066 | $70,000 |
| Dec 19, 2024 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93- INSTALL (3) STEEL SPECIAL CANTILEVER COLUMNS | 90068 | $90,000 |
| Nov 15, 2024 | Seismic retrofit | 90035 | $40,000 |
| Nov 13, 2024 | Seismic retrofitSoft story retrofit as per labc ch 93. install 4 steel cantilever columns | 90005 | $80,000 |
| Nov 13, 2024 | Seismic retrofitSoft story retrofit as per labc ch 93. install 2 (n) sccs | 90029 | $40,000 |
| Oct 10, 2024 | Seismic retrofit | 90035 | $40,000 |
| Oct 8, 2024 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93- Supplemental Plans to Soft Story Permit… | 90035 | not stated |
| Sep 4, 2024 | Seismic retrofit | 90291 | $40,000 |
| Aug 12, 2024 | Seismic retrofitParapet retrofit of (e) retail/restaurant bldg | 90004 | $50,000 |
| Aug 1, 2024 | Seismic retrofit | 90008 | $60,000 |
| Aug 1, 2024 | Seismic retrofit | 90291 | $90,000 |
| Jul 31, 2024 | Seismic retrofit (×2, same day)Soft-Story seismic retrofit per LABC Chapter 93: Install Ordinary Steel Moment Frame with grade beam | 90025 | $40,000 each |
| Jul 23, 2024 | Seismic retrofit | 90035 | $40,000 |
| Jul 18, 2024 | Seismic retrofitSoft-Story seismic retrofit per LABC Chapter 93: Install 3 STEEL SPECIAL CANITLEVER COLUMNS | 90046 | $30,000 |
| Jul 17, 2024 | Seismic retrofitSoft story retrofit of the soft/weak wall line(s) per lamc division 93. 4cantilever columns added… | 90049 | $50,000 |
| Apr 30, 2024 | Seismic retrofitSoft story retrofit as per labc ch | 90020 | $60,000 |
| Apr 18, 2024 | Seismic retrofitSoft story retrofit as per lamc div | 90291 | $100,000 |
| Apr 18, 2024 | Seismic retrofitSoft story retrofit as per labc ch | 90293 | not stated |
| Apr 5, 2024 | ADUCONVERT 300sf REC ROOM IN A 13 UNIT APARTMENT BUILDING INTO ADU PER G | 90025 | $30,000 |
| Apr 5, 2024 | Seismic retrofitSoft story retrofit as per labc ch | 90025 | $60,000 |
| Apr 5, 2024 | Seismic retrofitSoft story retrofit as per labc ch 93. soft story retrofit at parking garage with four special… | 91304 | $50,000 |
| Apr 3, 2024 | Seismic retrofitSoft story retrofit per labc chapter 93. install steel moment frame | 90293 | $30,000 |
| Apr 2, 2024 | Seismic retrofit | 90006 | $80,000 |
What to ask before you hire
About Optimum Seismic Inc
- Ask whether the business held an earlier license.
- Ask what the warranty covers and for how long, in writing.
- Check each certification on the maker's or group's own website. Contractors must renew them.
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 Optimum Seismic Inc
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See all 80 seismic retrofit contractors in Los Angeles, ranked by jobs
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