3921 1st Ave
Sacramento 95817 · North Oak Park · City of Sacramento · Coordinates: 38.55249, -121.46167
Executive Verdict · Public-Records Synthesis
Zoned R-1 in City of Sacramento with likely ADU & SB 9 infill eligibility and zero mapped flood, fire, or fault hazard overlaps; benchmark value $690,000 ($607,000–$773,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R-1 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 6,098 sq ft lot. Local precedent is active with 22 ADU permits within ¼ mile over the last 36 months.
Source: City of Sacramento zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$18,000 contributory est.)
Public building records show issued construction/renovation work on this parcel (6 total permits, latest Aug 24, 2026).
Source: City of Sacramento CDD, Issued Building Permits (Current Year) (parcel APN)
Watchouts & Due Diligence
- ! Mapped flood awareness zone (Zone X: minimal flood hazard)
all of the lot of the parcel intersects Zone X: minimal flood hazard. Outside mandatory federal SFHA insurance rules, but check local drainage and finished-floor requirements.
Source: FEMA National Flood Hazard Layer (parcel polygon)
- ! Delayed or open permit activity on this parcel
Addition (adds square footage) (COM-1823120): Issued after 6 mo (4.3× the 42d median) — slower than 90% of addition (adds square footage) permits in City of Sacramento (median 42d, 90th pct 162d, n=1,948).
Source: City of Sacramento CDD, Issued Building Permits (Current Year) (review-time benchmark)
- ! 4 slow or stalled nearby projects within ½ mile
Closest lead: Office Conversion (0.35 mi SE, issued). Inspect timeline history before assuming near-term completion.
Source: City of Sacramento CDD, Issued Building Permits (Current Year) · HCD APR (½-mile radius)
- ! Year 1 Prop 13 tax reset (~$8,316/yr at $690,000)
Sale triggers reassessment to 1.00% base + ~0.14% voter debt (~$693/mo). Confirm exact Mello-Roos / CFD special assessments on the county tax bill.
Source: CA Const. Art. XIIIA (Prop 13) · County Tax Collector
Parcel & Assessor
- Lot size:
- 6,098 sq ft (0.14 ac)
- Assessor use:
- Residential · Three Family · Triplex
- Tax rate area:
- 03002
- Addresses on lot:
- 3921 1ST AVE; 3921 1ST AVE APT 1 APT 1; 3921 1ST AVE APT 2 APT 2
Zoning & Land Use
R-1 — Single-Unit Dwelling Zone (R)
2040 General Plan: Neighborhood (FAR up to 2)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R-1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R-1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R-1, a single-family residential zone. The lot is 6,098 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original.
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 06067C0190H, effective August 16, 2012
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $607,000 – $773,000 · Status: Off market
HUD Small Area FMR (ZIP 95817) · FY 2026
Studio $1,580 · 1BR $1,660 · 2BR $2,040 · 3BR $2,720 · 4BR $3,130
Developments Deserving Closer Investigation & Active Area Builders
- Office Conversion (Issued)0.35 mi SE
Active in "Issued" for 2.8 yr (first record Jan 25, 2024) with no new permit activity recorded in 22 mo. High-impact scale (38 housing units, $3,500,000 declared valuation across 6 permits).
- Accessory dwelling unit at 3943 Colonial Way (Issued)0.17 mi N
Active in "Issued" for 2.1 yr (first record Oct 1, 2024) with no new permit activity recorded in 17 mo. current_status changed to "Finaled" in snapshot Nov 1, 2026.
- Addition (adds square footage) (COM-1823120) (Finaled)On this parcel
Issued after 6 mo (4.3× the 42d median) — slower than 90% of addition (adds square footage) permits in City of Sacramento (median 42d, 90th pct 162d, n=1,948).
- 3500 Broadway Mixed-Use (Issued)0.38 mi W
High-impact scale (24 housing units, $3,202,531 declared valuation across 8 permits). current_status changed to "Complete" in snapshot Nov 1, 2026.
Entity-resolved builders & contractors in ½ mile: Brower Mechanical CA (1 on parcel, 3 in ½ mi · Remodel / interior alteration); Heco Heating And Air Conditioning (1 on parcel, 1 in ½ mi · HVAC / heat pump); Deome 2 Builders (1 on parcel, 1 in ½ mi · Addition (adds square footage)); Cobex Construction Group (1 on parcel, 1 in ½ mi · Roof replacement); California Delta Mechanical (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer).
Permit & Project History on This Parcel (6 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| COM-2615647 | HVAC / heat pump | Finaled | Iss. Aug 24, 2026 | $30,000 | EPC - Converting existing gas-electric split system to all electric heat pump split system. total two split system one a… |
| RES-2606715 | Electrical / panel | Issued | Iss. Apr 6, 2026 | $1,300 | E-Permit: existing panel 060 Amps - Overhead service, new main panel 125 Amps, Reuse Existing weather head/masthead work… |
| RES-2513269 | HVAC / heat pump | Finaled | Iss. Jun 24, 2025 | $18,000 | No Duct Work Permitted. Change-out Split System to Split System (all-electric heat pump). The existing unit shall be rem… |
| RES-2324836 | Plumbing / water heater / sewer | Finaled | Iss. Nov 21, 2023 | $2,200 | Change-out installation of Gas - 030 gallon to Gas - 030 gallon, located inside building, screening not required. |