(415) 760-64641262 21st Ave, San Francisco, CA
Poly-On Security System Inc. is a general contractor with 28 tracked San Francisco building-permit projects on record, with the latest filing in that record 73 days ago. Its filings (Jan 2025 to May 2026) are concentrated in Nob Hill and Pacific Heights, 89% residential. A typical project in the record declares $5K–$20K. If you work at Poly-On Security System Inc., claim this page to add a description.
Filed 73 days ago
#555
by SF filing activity
among SF general contractors, 90 days to Aug 23, 2026
28
projects
from 58 filings
3/16
active weeks
weeks with a filing (16 weeks to Aug 23, 2026)
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Permit-backed projects · PermitPipeline’s independent record
$31K West of Twin Peaks single-family renovation
Active 10 months ago · 2 filings · Poly-On Security System: GC
Install a new dedicated system (sprinkler monitoring) per nfpa 72-2022 section 23.8.5.5.1 with one fire alarm control unit, one wireless…
GC named · Design firm identified · 2 specialty contractors identified
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$8K Marina tenant improvement
Last active Jun 2025 · 3 filings · Poly-On Security System: GC
Tenant improvement new installation and relocation notification devices like ref
GC named · Architect identified · Engineer identified · Specialty contractor identified
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$15K Castro/Upper Market multifamily renovation
Active 7 months ago · Poly-On Security System: GC
Upgrade the (e) fire alarm system by replacing it with addressable fire alarm unit wireless communicator next to facu addressable smoke…
GC named
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Neighborhood, filing date, scope and declared value are shown here. Exact addresses,
owner names and mailing addresses, and full filing histories are part of the paid product.
28 project records for Poly-On Security System Inc.: addresses, values, project teams
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Typical project$5K–$20K$15K typical88% of the SF median ($17K)Last filed73 days agoMarina · Jul 6, 2026Last 90 days2 active0 newly filed
Filing activity · 16 weeks to Aug 23, 2026 · peak May 2026
MAY
JUN
JUL
AUG
Project mix · by use
Commercial11%
Residential89%
Geography · by neighborhood
Nob Hill25%
Pacific Heights25%
Bayview Hunters Point17%
Castro/Upper Market17%
Marina16%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Architect SF | Architecture | 1 | |
| 2 | Kse Engineering | Architecture | 1 | |
| 1 | Best Care Fire Protection | General contractor | 1 | |
| 2 | Kells Construction Inc. | General contractor | 1 | |
| 3 | Magnum Construction Group Inc | General contractor | 1 | |
| 4 | Sonoma Build Group Inc | General contractor | 1 | |
| 5 | Nathaniel Huber | Plumbing 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 licenseCSLB Contractor #1044620As filed on 3 permits
Repeat working relationships0 firmsFirms this one appears with on more than one project, out of 8 in total.
Permit speed—Too few filings with a recorded issue date to publish a median.
Frequently asked questions
How many SF projects does Poly-On Security System Inc. appear on?▾
PermitPipeline tracks 28 San Francisco building-permit projects for Poly-On Security System Inc. (Jan 2025 to May 2026). 2 had filing activity in the last 90 days.
Does Poly-On Security System Inc. work on commercial or residential projects?▾
Across its tracked San Francisco filings, 11% of Poly-On Security System Inc.'s projects are commercial and 89% are residential (multifamily, small residential, or single-family). Based on permit records, not self-reported.
Where in San Francisco does Poly-On Security System Inc. work?▾
25% of Poly-On Security System Inc.'s tracked San Francisco projects are in Nob Hill.
What is a typical Poly-On Security System Inc. project worth?▾
The median declared value across the 28 San Francisco projects Poly-On Security System Inc. has on record that state one is $15K (declared value on the permit filing, not contract value).
Which firms appear most often on the same filings as Poly-On Security System Inc.?▾
Poly-On Security System Inc. most frequently appears on the same San Francisco permit filings as Architect SF, Best Care Fire Protection, Kells Construction Inc.. Appearing together indicates association on shared filings, not a proven working relationship.
Is Poly-On Security System Inc. a general contractor?▾
Poly-On Security System Inc. 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 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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