Matrix Seismic Corp is an engineering firm with 7 tracked San Francisco building-permit projects on record, with the latest filing in that record 65 days ago. Its filings (Feb 2025 to Jul 2026) are concentrated in Castro/Upper Market and Chinatown, 67% residential. A typical project in the record declares $30K–$100K. If you work at Matrix Seismic Corp, claim this page to add a description.
Filed 65 days ago
#589
by SF filing activity
among SF architects & engineers, 90 days to Aug 23, 2026
7
projects
from 10 filings
1/16
active week
weeks with a filing (16 weeks to Aug 23, 2026)
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Permit-backed projects · PermitPipeline’s independent record
$50K Nob Hill tenant improvement
Grade BActive 1 month ago · Matrix Seismic: engineer
Massage parlor tenant improvement
GC named · Engineer identified
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$100K Noe Valley multifamily renovation
Active 7 months ago · Matrix Seismic: engineer
Rear addition to an existing 2 story, 2 family dweling. interior renovations including new kitchen and bathrooms
No GC named · Architect identified · Specialty contractor identified
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$150K Potrero Hill single-family renovation
Last active Sep 2025 · Matrix Seismic: engineer
Install new family room 1st fl. install new bathroom 1st fl. new deck 2nd floor. new spral stair to new roof deck. 2nd fl kitchen and bath…
GC named · 1 other firm identified
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Neighborhood, filing date, scope and declared value are shown here. Exact addresses,
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7 project records for Matrix Seismic Corp: addresses, values, project teams
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Typical project$30K–$100K$60K typical3.5× the SF median ($17K)Last filed65 days agoNob Hill · Jul 14, 2026Last 90 days1 active1 newly filed
Filing activity · 16 weeks to Aug 23, 2026 · peak Jul 2026
MAY
JUN
JUL
AUG
Project mix · by use
Commercial33%
Residential67%
Geography · by neighborhood
Castro/Upper Market33%
Chinatown17%
Mission17%
Nob Hill17%
Noe Valley16%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | A. Urrutia | Architecture | 1 | |
| 2 | Edw. Lee Hammack, Architect | Architecture | 1 | |
| 1 | U S Prime Contractor Inc | General contractor | 3 | |
| 2 | Filshie Construction | General contractor | 1 | |
| 3 | Pineda Construction Inc | General contractor | 1 | |
| 4 | Value Electrical Construction | Electrical contractor | 1 |
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Owner and developer names, and the projects behind each connection, are part of the Leads product.
Firms that appear on the same San Francisco permit filings. Association on shared filings, not a proven working relationship.
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State licenseNot connectedArchitects are licensed by the California Architects Board and engineers by BPELSG. Neither register is part of the San Francisco permit record, and we do not yet read them.
Repeat working relationships1 firmFirms this one appears with on more than one project, out of 6 in total.
Permit speed—Too few filings with a recorded issue date to publish a median.
Frequently asked questions
How many SF projects does Matrix Seismic Corp appear on?▾
PermitPipeline tracks 7 San Francisco building-permit projects for Matrix Seismic Corp (Feb 2025 to Jul 2026). 1 had filing activity in the last 90 days.
Does Matrix Seismic Corp work on commercial or residential projects?▾
Across its tracked San Francisco filings, 33% of Matrix Seismic Corp's projects are commercial and 67% are residential (multifamily, small residential, or single-family). Based on permit records, not self-reported.
Where in San Francisco does Matrix Seismic Corp work?▾
33% of Matrix Seismic Corp's tracked San Francisco projects are in Castro/Upper Market.
What is a typical Matrix Seismic Corp project worth?▾
The median declared value across the 7 San Francisco projects Matrix Seismic Corp has on record that state one is $60K (declared value on the permit filing, not contract value).
Which firms appear most often on the same filings as Matrix Seismic Corp?▾
Matrix Seismic Corp most frequently appears on the same San Francisco permit filings as U S Prime Contractor Inc, A. Urrutia, Edw. Lee Hammack, Architect. Appearing together indicates association on shared filings, not a proven working relationship.
Is Matrix Seismic Corp an engineering firm?▾
Matrix Seismic Corp is listed as an engineering firm on its San Francisco permit filings. Roles on this profile are derived from the role each firm holds on public SF DBI filings.
Public aggregate — full project records are part of the paid leads product. Ranking, filing activity, project mix and geography were last recomputed Aug 23, 2026. Project counts, declared values and filing dates are read live from SF DBI filings.
How far back does this record go?▾
This page covers the recent permit record, not the firm’s full history. A firm’s earliest filing here means it was already working when our record opens, not that it started then.
Sources
San Francisco Department of Building Inspection permit filings.
Record source
Read directly from SF DBI filings.
Photography
None are shown until the firm supplies them.
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