Permit Record

Alteration Residential

3370 21st St, #0, San Francisco, Ca, 94110

Classificationadditions alterations or repairsResidential Alteration
Reliable value$20,000
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Not in source
Owner
Not in source
Architect
Not in source
Engineer
Not in source
Contractor license
Not in source
Building & lot · PLUTO
Building class
Not in source
Zoning district
Not in source
Lot area
Not in source
Year built
Not in source
Units (total)
Not in source
Units (residential)
2
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3608 085
Climate zone (IECC)
3C
Roof area (est.)
Not derivable — no building-size signal for this permit
HVAC tonnage (est.)
Not derivable — no building-size signal for this permit
Building type
Not in source
Building subtype
2 family dwelling
Geocode & dates
Coordinates
37.7571, -122.4227
Geocode confidence
95%
Geocode source
Not in source
Issued
Not in source
Applied
Not in source
Work class
Residential
Description
Source description

construct new stair from first floor to ground floor.

Status
Current status
finaled
Source status
complete
Finaled
Not in source
Provenance
First seen by PermitCore
May 2, 2026 · 23:50 UTC
Last seen
May 11, 2026 · 23:58 UTC
Last changed
May 11, 2026 · 23:58 UTC

Open in San Francisco source →

Data-quality checks0 of 12 flagged

0 of 12 data-quality rules flagged anything on this permit.

Checks not flagged

  • Geocode out of bounds
  • Geocode is sentinel
  • Issued date in the future
  • Issued date parse bug
  • Issued date is placeholder
  • Commercial units is placeholder
  • Residential units out of bounds
  • Residential units is placeholder
  • Total units out of bounds
  • Total units is placeholder
  • Valuation out of bounds
  • Valuation is placeholder
Project timeline at this parcel

6 permits at this parcel (parcel 3608 085)

  1. Date not usable in source483814256404Alteration Residential · Finaled$2,000
  2. Date not usable in source350221256404Alteration Residential · Finaled$900
  3. Date not usable in source216942256404Alteration Residential · Expired$2,000
  4. Date not usable in sourceThis permitAlteration Residential · Finaled$20,000
  5. Date not usable in source113091256404Alteration Residential · Expired$1,000
  6. Date not in source280077256404Alteration Residential · Filing$50,000

Full permit history at this parcel · as of Jul 9, 2026.

Developer details
Permit #
124603256404
Canonical ID
6:124603256404
Source permit ID
124603256404
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