Double -D Engineering
Engineering firm · San Francisco permit activity
Engineering firm active in San Francisco construction, tracked from public building-permit filings.
#16
by NYC filing activity
among NYC architects & engineers, last 90 days
92
project records
Jan 2025 to Jul 2026
13/16
active weeks
weeks with a filing (last 16)
92 projects
Scopes, declared values and this firm's role on each one
See 92 projects involving Double -D Engineering
Recent projects involving this firm
Noe Valley
Add temporary 2x6 stud wall @ basement of subject residence. install three hand-dug piers &…
$20K
Inner Richmond
Install new unit on the ground floor. pa#202512222427 (1 kitchen & 1 bath)
$1
Russian Hill
Correct and revise pa# 201511233346 to addresss nov 202029546 and change engineer of record.…
$10K
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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92 project records for Double -D Engineering: addresses, values, project teams
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Middle 50% of declared values: $10K–$180K (median $35K)
Most recent filing: Noe Valley · Jul 27, 2026
14 active · 8 newly observed last 90 days
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Filing activity · last 16 weeks
APR
MAY
JUN
JUL
14
active projects (last 90d)
8
newly observed (last 90d)
May 2026
peak month
Project mix · by use
Commercial3%
Residential97%
Geography · by borough
Noe Valley30%
West of Twin Peaks26%
Mission16%
Pacific Heights16%
Marina12%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Hood Thomas Architects | Architecture | 4 | |
| 2 | Andre Rothblatt Architecture | Architecture | 4 | |
| 3 | I-Design Arch. | Architecture | 3 | |
| 4 | Knock Arch & Design | Architecture | 3 | |
| 5 | Studio 797 | Architecture | 3 | |
| 1 | The Toboni Group | General contractor | 5 | |
| 2 | Pio Mcgarr Inc | General contractor | 4 | |
| 3 | Add A Garage Inc. | General contractor | 3 | |
| 4 | Doyle Developments | General contractor | 2 | |
| 5 | Eastwood Development Incorporated | General contractor | 2 |
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 Double -D Engineering filed?▾
PermitPipeline tracks 92 San Francisco building-permit projects for Double -D Engineering (Jan 2025 to Jul 2026). 14 had filing activity in the last 90 days.
Does Double -D Engineering work on commercial or residential projects?▾
Across its tracked San Francisco filings, 3% of Double -D Engineering's projects are commercial and 97% are residential (multifamily, small residential, or single-family). Based on permit records, not self-reported.
Where in San Francisco does Double -D Engineering work?▾
16% of Double -D Engineering's tracked San Francisco projects are in Noe Valley.
What is a typical Double -D Engineering project worth?▾
Across the 124 tracked projects with a declared value, Double -D Engineering averages $164K per project (declared value on the permit filing, not contract value).
Which firms does Double -D Engineering work with most often?▾
Double -D Engineering most frequently appears on the same San Francisco permit filings as The Toboni Group, Hood Thomas Architects, Pio Mcgarr Inc. Appearing together indicates association on shared filings, not a proven working relationship.
Is Double -D Engineering an engineering firm?▾
Double -D Engineering 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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