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Updated: Jun 01, 2026
Location and Projects
Address
4623 NORWICH AVE, Sherman Oaks, CA, 91403
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Seismic Retrofitters Engineer
Seismic Retrofitters Inc, 4623 Norwich Ave, Sherman Oaks, CA (Employees: Mark Dominic Barbagelata, Masoud Matt Moetazedi, and Mina Arangeh) holds a Renovation license and 3 other licenses according to the Environmental Protection Agency license board.
Their BuildZoom score of 118 ranks in the top 1% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Seismic Retrofitters Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Seismic Retrofitters Inc Contact Information
Phone Number: (818) 468-6406
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Address: 4623 NORWICH AVE, Sherman Oaks, CA 91403
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Seismic Retrofitters Inc Sherman Oaks
Quality
118
99th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Seismic Retrofitters Inc has a BuildZoom score of 118, which places them above 99% of 336,931 contractors in California.
Activity
|
34 projects
|
2025 |
|
44 projects
|
2024 |
|
36 projects
|
2023 |
Our building permit records indicate that Seismic Retrofitters Inc has worked on at least
114.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
44 projects
|
Home Additions |
|
4 projects
|
Commercial Renovations |
Analyzing permits over the last 4 years shows that Seismic Retrofitters Inc mostly works on
home addition
and commercial renovation
projects.
Pricing
|
20 projects
|
< $5k |
|
33 projects
|
$5k-$20k |
|
26 projects
|
$20k-$50k |
|
21 projects
|
$50k-$100k |
|
5 projects
|
$100k-$250k |
The typical size of their permits is approximately $22,800. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Seismic Retrofitters Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Voluntary structural strengthening in crawl space adn garage. bolt foundation at 32 oc w 3.4 tr min 7 embedment with dewalt pure 110 expoxy. install 1/2 struc 1 ply at perimeter nail 6 edge 12 field skip areas with utilities. no work in commercial occupancy
Valuation:
$32,380
Permit #:
202504245196
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
15 - retail sales
Voluntary structual strengthening@ ground floor 3/4 tr foundation bolts 7 embedment @ 32 oc. 1/2 structual 1 plywood nailed 6 edge 12 field @ some portion of walls. about 40 lineal feet x 4 high in back 40 lineal feet x 6-8 feet high at front
Valuation:
$32,000
Permit #:
202505217002
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
G/f: addition new 650 sq.ft. habitable space. addition new office room full bathroom and entertainment room. rebuild interior stairs. replace (e) furnace and water heater. adding new windows at side ( not visible from street)
Valuation:
$145,000
Permit #:
202407035801
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Mandatory soft-story retrofit int he basement and in the garage area on the 1/f per 2022 sfebc chapter a4. addition new plywood shear walls and simpson panels with concrete grade beams
Valuation:
$100,000
Permit #:
202505206890
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Do voluntary strengthening and structural repairs in the garage and basement. replace steel beams in kind in the garage due to significant corrosion. addition simpson panels and plywood shear walls with conc. grade beams in the basement
Valuation:
$70,000
Permit #:
202409100428
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Voluntary structural strenghtening. foundation anchorage bolting or ufrp, 3/4 diam galvanized all-thread x 7 embed @48 o.c. max;dewalt pure 110+ adhesive. addition 1/2 struc1 plywood to (e) 3x6 perimeter walls in some locations(up to 50% of wall length). 10d common nail 6 edge 12 field
Valuation:
$42,000
Permit #:
202405071607
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Unit#3: remodel kitchen & 1.5 bathroom in kind no structural work plumbing update to current code electrical by subcontractor permit to be pulled under their licence#745230
Valuation:
$79,175
Permit #:
202509165429
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Revision pa 2024-0918-1055 replace new window with new dbl french door in the rear wall. remove steel beam from scope and sister existing roof joists
Valuation:
$8,000
Permit #:
202504164536
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Partial foundation replacement and the addition of plywood shear walls and shear clips at storage level walls
Valuation:
$80,000
Permit #:
202503283328
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Voluntary strengthening on the ground fl. addition 4 simpson panels with foundation and addition plywood shear walls. ground floor only
Valuation:
$30,000
Permit #:
202502120196
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Replacing concrete foundation with new foundation @ 3 sides and underneath existing post. addition new stud wall in the backyard underneath porch for seismic strengthening. addition plywood shear walls on perimetr walls. replace existing framing in-kind in unit 2264 in the dining room
Valuation:
$120,000
Permit #:
202309116266
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
For compliance w abe program abe# 201812313684. reframe & install drywall in dropped ceiling above (e) door only install standard ada door operator on (e) main entry door install & program 4 push button door actuators cut floor tiles along (e) threshold and replace w/new ada compliant threshold
Valuation:
$3,500
Permit #:
202405091818
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
15 - retail sales
Voluntary structural strenghtheing at ground flr./bolt foundation 5/8 tr @ 4 max spacing 7 embedment w 3 square x1/4 thick bearing plate. addition struc 1 plywood over some areas of perimeter walls. w/3 square x1/4 thick bearing plate
Valuation:
$20,135
Permit #:
202401184232
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Residential. soft story retrofit per sfebc chapter 4d enginnering criteria chapter a4. addition steel moment frame ply shear walls andnew concrete foundations. commercial soft story under pa 202410223494
Valuation:
$70,000
Permit #:
202410223490
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Change the storefront of commercial space to restore the original entrance replace double door w/fixed window restore original store veneer on the facade replace window with entrance door and provide accessible ramp at interior
Valuation:
$30,000
Permit #:
202309277521
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
05 - food/beverag...
Widing garage door to have 9'7 garage door. no work beyong property line. doing voluntary strengthening in garage and crawl space by adding plywood shear walls
Valuation:
$60,000
Permit #:
202411205423
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Voluntary structural strengthening at rear crawl space ie cripple wall bracing per chapter a-3 ca building code. 5/8 tr foundation bolts 7 embedment @ 4 spacing 1/2 struct 1 ply nailed 6 edge 12 filed over some portion of wall
Valuation:
$20,325
Permit #:
202407106192
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Voluntary strengthening of the walls at the garage/storage level including the addition of plywood sheathing anchor bolts holddowns shear clips as well as eight new posts with associated concrete footings
Valuation:
$62,500
Permit #:
202402216222
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Voluntary structural strengthening @ ground floor 5/8 tr found bolts @ 7"embedment@ 4 spacing 1/2 struc i plywood nailed 6 edge 12 field over some protion of walls. approx 24 lf
Valuation:
$13,537
Permit #:
202505277266
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Voluntary strengtheing on the gr fl per 2022 cbc chapter a3. addition permiter plywood shear walls. addition new plywood shear walls and simpson panels with concrete grade beams
Valuation:
$100,000
Permit #:
202406174607
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
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BZ Score
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Seismic Retrofitters Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Seismic Retrofitters Inc License info
Verified License
| License # | NAT-F245049-1 |
| Status | Active |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Seismic Retrofitters Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 1059407 |
| Status | Active |
| State | California |
| Type | General Engineering, General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Seismic Retrofitters Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 745230 |
| Status | Active |
| State | California |
| Type | General Building, Electrical, Plumbing |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Seismic Retrofitters Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-F198850-1 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Corporation |
- According to the United States Environmental Protection Agency, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Seismic Retrofitters Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
118
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
531
Permits
- Building permit records show that Seismic Retrofitters Inc has worked on 531 permitted projects.
Seismic Retrofitters Inc Employees
MB
Mark Dominic Barbagelata
Sole Owner
MM
Masoud Matt Moetazedi
Rmo / Ceo / Pres
MA
Mina Arangeh
Officer
SB
Seda Thomas Bedley
Officer