Monthly archive · San Francisco County, California
San Francisco Building Permits — September 2026
Every building permit issued by the City and County of San Francisco in September 2026: counts, reported value, permits by trade, and the month's biggest projects.
Source: San Francisco open data (DataSF) — building permits issued by the Department of Building Inspection. Source last updated: October 17, 2026 · Our last pull: October 18, 2026 · Figures are as reported by the City and County of San Francisco.
Coverage: this report covers building permits issued by the City and County of San Francisco (a consolidated city-county, so the feed covers the whole county). One counting rule matters here: San Francisco's Department of Building Inspection publishes one row for every address or lot a permit touches, so one permit can appear several times in the raw feed. We count each permit once, at the address the department flags as primary — counts on this page are permits, never raw feed rows.
PermitsByCounty data, San Francisco, September 2026 · Source: City and County of San Francisco
Questions, answered from the data
What was the largest building permit issued in San Francisco in September 2026?
The largest was permit #202512172072 at 505 Mission Rock St, with a reported project value of $67,250,000, issued in September 2026, as reported by the City and County of San Francisco.
Permits by trade — September 2026
| Trade | Permits issued | Reported value |
|---|---|---|
| General & Other | 988 | $161,997,794 |
| Plumbing | 94 | $15,468,791 |
| Electrical | 69 | $12,600,683 |
| Fire Alarm | 40 | $988,286 |
| HVAC | 33 | $9,695,483 |
| Roofing | 33 | $2,531,257 |
| Solar | 25 | $559,377 |
| Signage | 12 | $54,275 |
| New Construction | 4 | $72,088,873 |
Biggest projects issued in September 2026
| Project (permit #) | Trade | Reported value | Issued |
|---|---|---|---|
| 505 Mission Rock St #202512172072 phase ii: mayoral ed 17-02 & 13-01: erect type i-a, a 23-story with 233 residential units with 2-storie… | New Construction | $67,250,000 | 2026-09-09 |
| 800 Chestnut St #202512081243 change use from art college-artist studios. ext facade restoration @ (clay/brown bldg & residential bld… | General & Other | $23,800,000 | 2026-09-04 |
| 300 Howard St #202608176690 7th & 8th floors: t.i. including new interior walls, ceiling, milkwork and finishes. | General & Other | $15,451,442 | 2026-09-24 |
| 425 Market St #202609017517 14th floor: new t.i. includes construction of non-structural partitions, ceillings, doors, glazing, light f… | General & Other | $6,100,000 | 2026-09-16 |
| 555 California St #202512161909 l41: ti. non-structural partitions, finishes, millwork, ceilings for new offices, meeting rooms and break a… | General & Other | $5,419,764 | 2026-09-18 |
| 50 California St #202609178254 existing interior office remodel. scope includes demo and construction of non structural partitions, ceilin… | Plumbing | $3,942,870 | 2026-09-24 |
| 50 California St #202604068926 2/fl- ti to include non structrual demo and construction of (n) conference center,gym, and lounge. | General & Other | $3,790,509 | 2026-09-25 |
| 1081 Ingalls St #202307202617 erect a one story, type 5,new community center with a building construction of 5,588sf.the new facility wil… | New Construction | $3,500,000 | 2026-09-09 |
| 580 California St #202608267180 15/f suite 1500: interior demolition & construction of non-structural elements including but not necess… | General & Other | $3,034,458 | 2026-09-09 |
| 50 California St #202608196842 level 27; alterations to conference rooms, storage area and employee break room. mep deferred. | General & Other | $2,862,400 | 2026-09-29 |
Full report: San Francisco County (San Francisco) county hub.