3143 4th Ave
Sacramento 95817 · North Oak Park · City of Sacramento · Coordinates: 38.55209, -121.47321
Executive Verdict · Public-Records Synthesis
Zoned R-2A in City of Sacramento with likely ministerial ADU eligibility and zero mapped flood, fire, or fault hazard overlaps; benchmark value $577,000 ($508,000–$646,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone R-2A allows residential use qualifying for ministerial ADU review under state law (17 ADU permits permitted within ¼ mile in 36 months).
Source: City of Sacramento zoning · CA Gov. Code 66314
- ✓ 5 documented municipal building permits on file
On-parcel permit history is indexed through Jul 23, 2026, letting you verify roof, HVAC, electrical, or structural work against seller disclosures.
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)
- ! 5 slow or stalled nearby projects within ½ mile
Closest lead: Accessory dwelling unit at 3243 X St (0.37 mi NE, in review). 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 (~$7,028/yr at $577,000)
Sale triggers reassessment to 1.00% base + ~0.14% voter debt (~$586/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 · Two Family · 2 Single Family Units
- Tax rate area:
- 03002
- Addresses on lot:
- 3140 DIAGON ALY; 3143 4TH AVE
Zoning & Land Use
R-2A — Multi-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-2A (multifamily residential): state law allows ADUs where homes are allowed. 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 R-2A (multifamily residential), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned R-2A (multifamily residential), not a single-family residential zone.
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: $508,000 – $646,000 · 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
Nearby Activity (½ mile radius, since November 2024)
53 active or recent development projects (143 housing units across completed, permitted, and pipeline stages) and 715 total building permits recorded within ½ mile.
- New construction12 permits (70 units)
- Adds housing (ADU)38 permits (73 units)
- Demolition10 permits
- Additions & renovations93 permits
- Building systems496 permits
- Repairs22 permits
- Other44 permits
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 3243 X St (In review)0.37 mi NE
In "In review" for 12 mo (since Nov 6, 2025), exceeding the 45d median and 184d 90th percentile for new single-family home permits in City of Sacramento (n=3,657). issued_date changed to "2026-10-07" in snapshot Nov 1, 2026.
- Accessory dwelling unit at 2832 34th St (In review)0.16 mi E
In "In review" for 2 yr (since Nov 5, 2024), exceeding the 210d median and 627d 90th percentile for new multifamily / condos / mixed-use permits in City of Sacramento (n=199). High-impact scale (4 housing units, $524,150 declared valuation across 2 permits).
- The Hatchery Multi-Family (33 Income-Restricted Units) (In review)0.19 mi NE
In "In review" for 12 mo (since Oct 31, 2025), exceeding the 210d median and 365d 75th percentile for new multifamily / condos / mixed-use permits in City of Sacramento (n=199). High-impact scale (33 housing units, 4 deed-restricted affordable, $4,009,938 declared valuation across 1 permit).
- Accessory dwelling unit at 3522 Avant Garde Aly (Issued)0.32 mi E
Active in "Issued" for 6.9 yr (first record Dec 17, 2019) with no new permit activity recorded in 2.5 yr. current_status changed to "Expired Permit" in snapshot Nov 1, 2026.
Entity-resolved builders & contractors in ½ mile: Millhouse Mechanical (1 on parcel, 1 in ½ mi · HVAC / heat pump); Americas Plumbing (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer); Rcp Construction (13 in ½ mi · Commercial tenant improvement); Veritas Design Build (12 in ½ mi · New single-family home); A Construction Pro (11 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (5 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| RES-2615802 | HVAC / heat pump | Finaled | Iss. Jul 23, 2026 | $16,546 | No Duct Work Permitted. Change-out Split System to Split System (all-electric heat pump). The existing unit shall be rem… |
| RES-2012837 | Plumbing / water heater / sewer | Finaled | Iss. Jul 22, 2020 | $5,800 | E-Permit: Water Re-pipe, 100 L.F. |
| RES-1718979 | Plan revision / deferred submittal | Complete | App. Oct 13, 2017 | — | REVISION TO RES-1618748: Change of interior roof framing for purposes of cost savings. No exterior modification |
| RES-1710211 | Plan revision / deferred submittal | Complete | App. Jun 13, 2017 | — | revision to res-1618748, revised foundation |
| RES-1618748 | New single-family home | Finaled | Iss. Mar 13, 2017 | $50,000 | EXPEDITED 10,7,5- constructing a secondary dwelling unit 320 sq ft , attached 256 sq ft deck. (existing structure remo… |
State HCD Housing Element APR records on this parcel: 1 entry (report years 2018).