$1,050,000
458 Flagg Ave, San Jose 95128
AddressIntel AI Briefing
The optimal play is stealth density: primary + ADU + JADU, utilizing the exceptional 90/100 ADU feasibility score on this well-sized lot. Although the low entry price provides a solid spread, the remodeled condition of the existing 1946 home suggests preserving the primary structure while adding detached units for a future AB 1033 condo split.
Property Permit History
Recent Neighborhood Remodeling (San Jose)
Parcel & Zoning Info
ADU Potential
Deep lot · Corner lot · ~51 ft frontage × 105 ft deep, room to set a detached ADU back from the street with a buffer, reads as a separate home. 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
Luther Burbank Elementary
Luther Burbank
Herbert Hoover Middle
San Jose Unified
Abraham Lincoln 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
63/100
Based on recent sales velocity and local demand in 95128.
Flippability Score
68/100
Measures neighborhood renovation density vs. recent permits on this property.
Bidding War Prob.
17%
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 (95128): $920/sqft, plus 5% because new houses sold at a median 1.07x their comps across 239 real rebuilds. Sized within 25% of the 1,600 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 95128)
Sized to the modelled 1,600 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.