Thor Matteson S.E.
Engineering firm · San Francisco permit activity
Engineering firm active in San Francisco construction, tracked from public building-permit filings.
#799
by NYC filing activity
among NYC architects & engineers, last 90 days
3
project records
Aug 2025 to Jun 2026
1/16
active weeks
weeks with a filing (last 16)
3 projects
Scopes, declared values and this firm's role on each one
See 3 projects involving Thor Matteson S.E.
Recent projects involving this firm
Sunset/Parkside
Voluntary strengthening at ground floor
$52K
Castro/Upper Market
Install a (n) shear wall between line b&d. install a new 4x4 x20' strut along line b w/ 2x…
$23K
Glen Park
Perform a voluntary seismic strenghtening project per fema p-1100 procedures including the…
$20K
Neighbourhood, filing date, scope and declared value are shown here. Exact addresses, full filing histories and project teams are part of the paid product.
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3 project records for Thor Matteson S.E.: addresses, values, project teams
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Most recent filing: Sunset/Parkside · Jun 25, 2026
1 active · 1 newly observed last 90 days
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Filing activity · last 16 weeks
APR
MAY
JUN
JUL
1
active projects (last 90d)
1
newly observed (last 90d)
Jun 2026
peak month
Project mix · by use
Residential100%
Geography · by borough
Castro/Upper Market34%
Glen Park33%
Sunset/Parkside33%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| None on shared filings. | ||||
| 1 | Seismic Retrofitters Inc. | General contractor | 1 | |
Firms that appear on the same San Francisco permit filings. Association on shared filings, not a proven working relationship.
Frequently asked questions
How many SF projects has Thor Matteson S.E. filed?▾
PermitPipeline tracks 3 San Francisco building-permit projects for Thor Matteson S.E. (Aug 2025 to Jun 2026). 1 had filing activity in the last 90 days.
Does Thor Matteson S.E. work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of Thor Matteson S.E.'s projects are commercial and 100% are residential (multifamily, small residential, or single-family). Based on permit records, not self-reported.
Where in San Francisco does Thor Matteson S.E. work?▾
33% of Thor Matteson S.E.'s tracked San Francisco projects are in Castro/Upper Market.
What is a typical Thor Matteson S.E. project worth?▾
Across the 3 tracked projects with a declared value, Thor Matteson S.E. averages $32K per project (declared value on the permit filing, not contract value).
Which firms does Thor Matteson S.E. work with most often?▾
Thor Matteson S.E. most frequently appears on the same San Francisco permit filings as Seismic Retrofitters Inc.. Appearing together indicates association on shared filings, not a proven working relationship.
Is Thor Matteson S.E. an engineering firm?▾
Thor Matteson S.E. 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 DOB filings.
Public aggregate — full project records are part of the paid leads product. Updated daily from SF DBI filings.
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