3 N 1 Construction Inc.
General contractor · San Francisco permit activity
General contractor active in San Francisco construction, tracked from public building-permit filings.
#1450
by NYC filing activity
among NYC general contractors, last 90 days
7
project records
Jan 2025 to Apr 2026
1/16
active weeks
weeks with a filing (last 16)
7 projects
Scopes, declared values and this firm's role on each one
See 7 projects involving 3 N 1 Construction
Recent projects involving this firm
Outer Richmond
In-kind remodeling of 1 bathroom(s) in 2nd fl with 0 shower pan(s)
$28K
Sunset/Parkside
Recommencement and completion of work approved under pa# 202104027779
$1K
Sunset/Parkside
Permit application in response to the nov #2025-43842 to repair the damged portion of the…
$25K
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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7 project records for 3 N 1 Construction: addresses, values, project teams
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Middle 50% of declared values: $9K–$28K (median $12K)
Most recent filing: Outer Richmond · Apr 30, 2026
0 active · 0 newly observed last 90 days
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Filing activity · last 16 weeks
APR
MAY
JUN
JUL
0
active projects (last 90d)
0
newly observed (last 90d)
Apr 2026
peak month
Project mix · by use
Residential100%
Geography · by borough
Sunset/Parkside72%
Inner Sunset14%
Outer Richmond14%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Lao Engineering | Engineering | 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 3 N 1 Construction Inc. filed?▾
PermitPipeline tracks 7 San Francisco building-permit projects for 3 N 1 Construction Inc. (Jan 2025 to Apr 2026). 0 had filing activity in the last 90 days.
Does 3 N 1 Construction Inc. work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of 3 N 1 Construction Inc.'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 3 N 1 Construction Inc. work?▾
71% of 3 N 1 Construction Inc.'s tracked San Francisco projects are in Sunset/Parkside.
What is a typical 3 N 1 Construction Inc. project worth?▾
Across the 7 tracked projects with a declared value, 3 N 1 Construction Inc. averages $19K per project (declared value on the permit filing, not contract value).
Which firms does 3 N 1 Construction Inc. work with most often?▾
3 N 1 Construction Inc. most frequently appears on the same San Francisco permit filings as Lao Engineering. Appearing together indicates association on shared filings, not a proven working relationship.
Is 3 N 1 Construction Inc. a general contractor?▾
3 N 1 Construction 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 DOB filings.
Public aggregate — full project records are part of the paid leads product. Updated daily from SF DBI filings.
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