1645 21st Ave
Oakland 94606 · Rancho San Antonio · Oakland · Coordinates: 37.78765, -122.23702
Parcel & Assessor
- Lot size:
- 3,006 sq ft (0.07 ac)
- Assessor use:
- Single family residential homes used as such
- Tax rate area:
- 17
- Addresses on lot:
- 1645 21ST AVE; 1647 21ST AVE
Zoning & Land Use
RM-2 (Oakland)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RM-2 (multifamily residential): state law allows ADUs where homes are allowed. We read RM-2 from the zoning code's name; we haven't checked it against Oakland's code text. On a multifamily lot the state allowance is different: ADUs in non-living space of the building, plus up to eight detached ADUs.
- SB 9: two homes on the lotUnlikely
Zoned RM-2 (multifamily residential), not a single-family residential zone. We read RM-2 from the zoning code's name; we haven't checked it against Oakland's code text.
- SB 9: split into two lotsUnlikely
Zoned RM-2 (multifamily residential), not a single-family residential zone. We read RM-2 from the zoning code's name; we haven't checked it against Oakland's code text.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06001C0086J, effective May 26, 2026
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $539,000 – $685,000 · Status: Off market
HUD Small Area FMR (ZIP 94606) · FY 2026
Studio $1,750 · 1BR $1,990 · 2BR $2,420 · 3BR $3,090 · 4BR $3,670
Nearby Activity (½ mile radius, since —)
10 active or recent development projects (86 housing units across completed, permitted, and pipeline stages) and 0 total building permits recorded within ½ mile.
Developments Deserving Closer Investigation & Active Area Builders
- Category 2 Accessory Dwelling Unit (Issued)On this parcel
Active in "Issued" for 3 yr (first record Nov 9, 2023) with no new permit activity recorded in 3 yr.
- 15 new homes (Entitled)0.21 mi S
Active in "Entitled" for 5.3 yr (first record Aug 2, 2021) with no new permit activity recorded in 5.3 yr. High-impact scale (15 housing units across 0 permits).
- BY RIGHT RESIDENTIAL APPROVAL per S-13 and Density Bonus. (Entitled)0.26 mi NW
Active in "Entitled" for 2.3 yr (first record Jul 9, 2024) with no new permit activity recorded in 2.3 yr. High-impact scale (29 housing units, 29 deed-restricted affordable across 0 permits).
- 9 new homes (Entitled)0.27 mi S
Active in "Entitled" for 4.9 yr (first record Dec 7, 2021) with no new permit activity recorded in 4.9 yr. High-impact scale (9 housing units, 1 deed-restricted affordable across 0 permits).
Permit & Project History on This Parcel (0 permits, 1 grouped projects)
No building permits recorded on this parcel in our dataset.
State HCD Housing Element APR records on this parcel: 1 entry (report years 2023).