John Lum Architecture
Architecture firm · San Francisco permit activity
Architecture firm active in San Francisco construction, tracked from public building-permit filings.
#420
by NYC filing activity
among NYC architects & engineers, last 90 days
4
project records
Apr 2025 to Jun 2026
2/16
active weeks
weeks with a filing (last 16)
4 projects
Scopes, declared values and this firm's role on each one
See 4 projects involving John Lum Architecture
Recent projects involving this firm
Castro/Upper Market
Revision to bpa#202504174601. heating & cooling systems changed to 2 outdoor heat pumps with…
$272K
Marina
All work limited to exterior building envelope, no interior changes. construction of a new…
Haight Ashbury
Revision to pa # 2025-0825-3833. reconfiguration of approved 3rd fl bathroom. addition of an…
$15K
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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4 project records for John Lum Architecture: addresses, values, project teams
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Most recent filing: Castro/Upper Market · Jun 17, 2026
2 active · 1 newly observed last 90 days
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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 borough
Castro/Upper Market25%
Haight Ashbury25%
Marina25%
Pacific Heights25%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Lx Engineering | Engineering | 1 | |
| 2 | John Lum Architecture | Architecture | 1 | |
| 3 | Double -D Engineering | Engineering | 1 | |
| 1 | Terence Mcmahon Construction | General contractor | 1 | |
| 2 | Ace | General contractor | 1 | |
| 3 | Amador General Construction Inc | General contractor | 1 | |
| 4 | Iy Development & Renovation 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 John Lum Architecture filed?▾
PermitPipeline tracks 4 San Francisco building-permit projects for John Lum Architecture (Apr 2025 to Jun 2026). 2 had filing activity in the last 90 days.
Does John Lum Architecture work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of John Lum Architecture'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 John Lum Architecture work?▾
25% of John Lum Architecture's tracked San Francisco projects are in Castro/Upper Market.
What is a typical John Lum Architecture project worth?▾
Across the 4 tracked projects with a declared value, John Lum Architecture averages $78K per project (declared value on the permit filing, not contract value).
Which firms does John Lum Architecture work with most often?▾
John Lum Architecture most frequently appears on the same San Francisco permit filings as Lx Engineering, Terence Mcmahon Construction, Ace. Appearing together indicates association on shared filings, not a proven working relationship.
Is John Lum Architecture an architecture firm?▾
John Lum Architecture is listed as an architecture 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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