$1,735,550
490 Hawthorn Ave, Sunnyvale 94086
AddressIntel AI Briefing
Priced near land value, this lot is a spectacular teardown-and-mansionize opportunity in a premier Sunnyvale location. Rebuilding a modern custom home up to the allowable FAR limit represents a clear, high-conviction path to equity generation. Alternatively, a stealth density play using a new primary dwelling plus detached ADUs will secure exceptional rental yield in this high-demand tech hub.
Property Permit History
Recent Neighborhood Remodeling (Sunnyvale)
Parcel & Zoning Info
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
Ellis Elementary
Sunnyvale
Marian A. Peterson Middle
Santa Clara Unified
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
74/100
Based on recent sales velocity and local demand in 94086.
Flippability Score
97/100
Measures neighborhood renovation density vs. recent permits on this property.
Bidding War Prob.
32%
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 4 recent multi-family sales in Sunnyvale (94086): $613/sqft, plus 5% because new houses sold at a median 1.07x their comps across 239 real rebuilds. Sized within 25% of the 5,600 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 (Sunnyvale 94086)
Sized to the modelled 5,600 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.