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ActiveSingle Family

$2,498,000

679 Torreya Ave, Sunnyvale 94086

Beds5
Baths3
Sqft1,838
DOM0
No Photos Available

AddressIntel AI Briefing

An SB 9 lot split into multiple units is the optimal play on paper, but liquefaction hazards act as a major cost blocker. The high asking price relative to theoretical ARV further kills developer margins.

Property Permit History

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

Recent Neighborhood Remodeling (Sunnyvale)

2026-08-03382 PESCADERO Sunnyvale CA 94086
Other
--ISSUED
2026-08-031003 RUBIS Sunnyvale CA 94087
Plumbing
--ISSUED
2026-08-03383 BAYVIEW Sunnyvale CA 94086
Hvac
--ISSUED
2026-08-031282 SANDIA Sunnyvale CA 94089
Renovation
--ISSUED
2026-08-03404 IVES Sunnyvale CA 94087
Electrical
--ISSUED
2026-08-03858 RUBIS Sunnyvale CA 94087
Plumbing
--ISSUED

Parcel & Zoning Info

APN21310012
Official Lot Sqft5,227
Zoning Code--
SB 9 StatusLikely · up to 4 units
SB 9 Block Reasons No SB 9 disqualifiers found
Development Blockers
Liquefaction
Unlock Pathways
Ministerial ADU Ministerial SB 9 Density Bonus
Entitlement RiskLow (0/100)

ADU Potential

Feasibility Score69/100
Max ADU Units2 (ADU + JADU)
Est. ADU Size1,200 sqft
Existing Coverage35.2%

Standard lot · Corner lot · ~56 ft frontage × 101 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 Score15/100
ClassBuilt out
FAR Utilization78% of allowed
Buildable Headroom+514 sqft

Existing home already uses most of the allowable floor area, little expansion headroom. Zoning allows roughly 2,352 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

Yes
In a mapped liquefaction zone. May require specialized foundation engineering.

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.

Nearby Public Schools

Elementary School

Ponderosa Elementary

Santa Clara Unified

0.5 miles away
Middle School

Marian A. Peterson Middle

Santa Clara Unified

1.2 miles away
High School

New Valley Continuation High

Santa Clara Unified

0.6 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

73/100

Based on recent sales velocity and local demand in 94086.

Flippability Score

20/100

Measures neighborhood renovation density vs. recent permits on this property.

Bidding War Prob.

31%

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 2,352 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 6 recent single-family sales in 94086: $1,301/sqft.

Hard Costs$960,000
New Build2,400 sqft
Total Capital Required$3,633,000
Estimated Resale (ARV)$3,122,400

Projected Profit

-$510,600
-14.1% ROI

Warning: Project is mathematically underwater.

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