$3,998,000
459 Cornell Ave, San Mateo 94402
AddressIntel AI Briefing
Stealth density via ADU/JADU addition is the best strategic option given the property is already fully remodeled and updated. Demographics in San Mateo are pristine, with household incomes at the $250,000 ceiling supporting luxury ADU rental yields. A full SB 9 lot split is constrained by high 42% existing lot coverage and setback limitations.
Property Permit History
Recent Neighborhood Remodeling (San Mateo)
Parcel & Zoning Info
ADU Potential
Flag / irregular · Corner lot · ~118 ft frontage × 123 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.
Redevelopment Potential
Existing home already uses most of the allowable floor area — little expansion headroom. Zoning allows roughly 3,168 sqft of gross floor area on this lot.
Screening estimate comparing existing living area to the city's single-family floor-area limit. FAR figure is a discretionary-review trigger, not a hard cap — treat as approximate. Source: San Mateo Muni Code 27.18.060 (R1-B/C); 6,000 sqft cap (as of 2026-06-30). Verify FAR, coverage, setbacks, and height 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.
Nearby Public Schools
Baywood Elementary
San Mateo-Foster City
Borel Middle
San Mateo-Foster City
Aragon High
San Mateo Union High
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
73/100
Based on recent sales velocity and local demand in 94402.
Flippability Score
50/100
Measures neighborhood renovation density vs. recent permits on this property.
Bidding War Prob.
56%
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.
Based on 6 recent sales in 94402 averaging $1,263/sqft.
Projected Profit
Warning: Project is mathematically underwater.