$2,499,888
505 Westside Ave, Sunnyvale 94087
AddressIntel AI Briefing
Stealth density via ADU/JADU addition is the recommended strategy on this modern 1992 home to avoid the high cost of total demolition. The lot is fully utilized with 55% coverage, which acts as a major blocker to an SB 9 lot split. Exceptional demographics with $250,000+ median incomes support premium pricing for any added square footage.
Property Permit History
Recent Neighborhood Remodeling (Sunnyvale)
Parcel & Zoning Info
ADU Potential
Deep lot · Corner lot · ~53 ft frontage × 108 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.
Redevelopment Potential
Existing home already uses most of the allowable floor area — little expansion headroom. Zoning allows roughly 1,960 sqft of gross floor area on this lot.
Screening estimate comparing existing living area to the city's single-family floor-area limit. FAR rule curated from current municipal code. Source: Sunnyvale Muni Code Ch. 19.32, Table 19.32.020 (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
Chester W. Nimitz Elementary
Cupertino Union
Sunnyvale Middle
Sunnyvale
Fremont High
Fremont 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
89/100
Based on recent sales velocity and local demand in 94087.
Flippability Score
45/100
Measures neighborhood renovation density vs. recent permits on this property.
Bidding War Prob.
69%
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 94087 averaging $1,385/sqft.