$4,498,888
21600 Walton Ave, San Jose 95120
AddressIntel AI Briefing
Since the primary structure was built in 2025, a teardown is out of the question; instead, the optimal play is executing an SB 9 lot split into multiple units on this massive five-acre parcel. Utilizing the maximum ADU feasibility allows for a highly profitable stealth density strategy while preserving the pristine main residence. The moderate fire hazard zone is the only environmental factor to monitor during land development.
Property Permit History
Recent Neighborhood Remodeling (San Jose)
Parcel & Zoning Info
ADU Potential
Flag / irregular · Corner lot · ~987 ft frontage × 1139 ft deep, a tucked-away rear unit is very private; access is typically via the pole driveway. A second street frontage lets an ADU take its own entrance and address.
Screening heuristic based on lot size, existing coverage, lot orientation, and hazard overlays. CA ADU law is ministerial statewide; verify max size, setbacks, and JADU owner-occupancy with the local planning dept.
Hazard Snapshot
Flood Zone
Fire Severity
Liquefaction
Fault Zone
Not a substitute for a Natural Hazard Disclosure (NHD) report. Zones reflect available GIS data and may not cover all localities. Liquefaction and fault flags: modified from California Geological Survey, Web Service of Official Maps of Alquist-Priolo Earthquake Fault Zones and Web Service of Official Maps of Seismic Hazard Zones (2025).
Nearby Public Schools
Baldwin (Julia) Elementary
Oak Grove Elementary
Bernal Intermediate
Oak Grove Elementary
Leland High
San Jose Unified
School boundaries are subject to change. Nearest school distance does not guarantee enrollment eligibility. Check with the local district. Data provided by CDE.
Proprietary Intelligence
Market Heat Index
76/100
Based on recent sales velocity and local demand in 95120.
Flippability Score
70/100
Measures neighborhood renovation density vs. recent permits on this property.
Bidding War Prob.
9%
Likelihood of multiple offers based on local list-to-sale ratios and DOM.
Proforma ROI Calculator
Back-of-the-napkin deal analysis across development strategies.
Median of 12 recent single-family sales in San Jose (95120): $781/sqft, plus 5% because new houses sold at a median 1.07x their comps across 239 real rebuilds. Sized within 25% of the 5,400 sqft build, because smaller houses sell for more per foot and pricing a rebuild off them overstates resale.
Commission, transfer tax and closing. Deducted from resale before profit, so the ROI below is net of the exit rather than gross.
Interest on the purchase price for the whole project plus half the build budget, since construction draws ramp up. The default is 7% over 33 months, the median purchase-to-sale time of 239 real Peninsula and South Bay rebuilds. Set the rate to 0 for a cash purchase, or use your own lender's terms.
Projected Profit
Warning: Project is mathematically underwater.
Recent Comparables (San Jose 95120)
Sized to the modelled 5,400 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.