Housing project
4345 20th St · San Francisco · Block/lot 2751/021 · What else is happening nearby
Application received. Based on 202606102904: city status 'filed'.
As proposed on the most recent active record
The applicant's construction cost estimate on the permit. Not a market or assessed value.
None of these records has changed between our snapshots so far.
legalization udu on 1/f and addition of state adu at basement lvl. excavate (e) slab and add (n),convert into habitable space. modify front & side elevations, access stairs & add landscaping. new laundry.
Applied Aug 7, 2026 · 2 units · valuation $220,000 · 4345 20th St
Linked because: earliest record in this project
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel · Retrieved Oct 28, 2026
Search by record number: 202606102904
Zoning, assessor links, and the full permit history for the parcel
The city and the State don't publish a single project record, so we group related permits and State housing reports ourselves. This grouping is our inference, not an official record. Each permit shows why it was included.