Cornerstone Construction
General contractor · San Francisco permit activity
General contractor active in San Francisco construction, tracked from public building-permit filings.
#670
by SF filing activity
among SF general contractors, last 90 days
3
projects tracked
Aug 2025 to Jul 2026
2/16
active weeks
weeks with a filing (last 16)
1 of the 3 Cornerstone Construction projects filed new permits in the last 30 days.
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$44K Lone Mountain/USF renovation
Filed 21 days ago · 2 filings · Cornerstone Construction: GC
Ref to bldg: electrical upgrade for adu switches for e) lighting to be upgrade, connect garbage disposal otc hood connect
GC named
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$14K Pacific Heights renovation
Filed 1 month ago · 2 filings · Cornerstone Construction: GC
Re-roofing with torch down ref
GC named
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$30K Inner Sunset renovation
Filed 11 months ago · Cornerstone Construction: GC
To comply with nov repairing damage framing in kitchen; remodeling space, replacing damaged walk in cooler. new indian restaurant taking…
GC named · Architect identified
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Neighborhood, filing date, scope and declared value are shown here. Exact addresses,
owner and contact details and full filing histories are part of the paid product.
3 project records for Cornerstone Construction: addresses, values, project teams
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Most recent filing: Lone Mountain/USF · Jul 16, 2026
2 active · 1 newly observed last 90 days
Filing activity · last 16 weeks
APR
MAY
JUN
JUL
2
active projects (last 90d)
1
newly observed (last 90d)
Jun 2026
peak month
Project mix · by use
Residential100%
Geography · by neighborhood
Inner Sunset34%
Lone Mountain/USF33%
Pacific Heights33%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Jim Lau | Architecture | 1 | |
| None on shared filings. | ||||
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 Cornerstone Construction filed?▾
PermitPipeline tracks 3 San Francisco building-permit projects for Cornerstone Construction (Aug 2025 to Jul 2026). 2 had filing activity in the last 90 days.
Does Cornerstone Construction work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of Cornerstone Construction'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 Cornerstone Construction work?▾
33% of Cornerstone Construction's tracked San Francisco projects are in Inner Sunset.
What is a typical Cornerstone Construction project worth?▾
Across the 5 tracked projects with a declared value, Cornerstone Construction averages $18K per project (declared value on the permit filing, not contract value).
Which firms does Cornerstone Construction work with most often?▾
Cornerstone Construction most frequently appears on the same San Francisco permit filings as Jim Lau. Appearing together indicates association on shared filings, not a proven working relationship.
Is Cornerstone Construction a general contractor?▾
Cornerstone Construction is listed as a general contractor 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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