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ActiveSingle Family

$2,589,000

959 Eton Way, Sunnyvale 94087

Beds4
Baths2
Sqft1,631
DOM0
No Photos Available

AddressIntel AI Briefing

The primary residence's high-end, remodeled condition effectively rules out a teardown strategy. Instead, the optimal play is stealth density: primary + ADU + JADU, utilizing the clean, hazard-free lot to add accessory units. This preserves the value of the main home while unlocking premium rental yield in a top-tier Sunnyvale neighborhood.

Property Permit History

No permit history found directly associated with this property's address.

Recent Neighborhood Remodeling (Sunnyvale)

2026-10-22 • 1111 LOCKHEED MARTIN WY Unit: 158 SUNNYVALE CA 94089
Fire Permit
$147,760Active - Issued
2026-10-22 • 668 W MCKINLEY AV SUNNYVALE CA 94086
Engineering Project - Encroachment Permit
--Active - Issued
2026-10-22 • 354 BALSAM AV SUNNYVALE CA 94085
Engineering Project - Encroachment Permit
--Active - Issued
2026-10-22 • 545 OAKMEAD PY SUNNYVALE CA 94085
Fire Permit
$14,100Active - Issued
2026-10-22 • 386 CYPRESS AV SUNNYVALE CA 94085
Building Project
$4,000Active - Issued
2026-10-22 • 1257 LAKESIDE DR SUNNYVALE CA
Minor Building Permit
$150,000Active - Issued

Parcel & Zoning Info

APN31326030
Official Lot Sqft5,663
Zoning Code--
SB 9 StatusLikely · up to 4 units
Unlock Pathways
Ministerial ADU Ministerial SB 9 Density Bonus
Entitlement RiskLow (0/100)

ADU Potential

Feasibility Score85/100
Max ADU Units2 (ADU + JADU)
Est. ADU Size1,200 sqft
Existing Coverage28.8%

Standard lot · Corner lot · ~68 ft frontage × 98 ft deep, typical proportions for a detached ADU behind or beside the 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

Redevelopment Score41/100
ClassExpansion room
FAR Utilization64% of allowed
Buildable Headroom+917 sqft

Meaningful unused floor-area headroom under current zoning, room to add square footage. Zoning allows roughly 2,548 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

X
Area of minimal flood hazard.

Fire Severity

None
Not in a mapped state fire severity zone.

Liquefaction

No
Not in a mapped liquefaction zone.

Fault Zone

No
Not in a mapped Alquist-Priolo 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

Elementary School

Laurelwood Elementary

Santa Clara Unified

0.5 miles away
Middle School

Marian A. Peterson Middle

Santa Clara Unified

0.3 miles away
High School

Santa Clara Community Day

Santa Clara Unified

1.0 miles away

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

65/100

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.

Zoning allows roughly 2,548 sqft on this lot, and the default builds to that envelope. The FAR figure is a discretionary-review trigger, not a hard cap.

Median of 12 recent single-family sales in Sunnyvale (94087): $1,706/sqft, plus 5% because new houses sold at a median 1.07x their comps across 239 real rebuilds. Sized within 25% of the 2,500 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.

Hard Costs$1,375,000
New Build2,500 sqft
Total Capital Required$4,139,000
Estimated Resale (ARV)$4,477,500
Cost of Sale (5%)-$223,875
Carry (33mo @ 7%)-$647,570
Net Proceeds$3,606,055

Projected Profit

-$532,945
-12.9% ROI

Warning: Project is mathematically underwater.

Recent Comparables (Sunnyvale 94087)

Sized to the modelled 2,500 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.

588 Endicott Dr

Sold
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$/Sqft: $1,720

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$3,200,000
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$3,520,000
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Sqft: 1920
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1408 Lewiston Dr

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816 Lennox Ct

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