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ActiveSingle Family

$1,488,000

741 San Tomas St, Sunnyvale 94085

Beds3
Baths2
Sqft1,417
DOM13
No Photos Available

AddressIntel AI Briefing

Stealth density (primary + ADU) is the only viable play here because both active flood zones and liquefaction block any SB 9 split option. The current updated structure restricts teardown viability due to sunk asset value. Focus on a high-end interior renovation coupled with a detached accessory unit.

Property Permit History

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

Recent Neighborhood Remodeling (Sunnyvale)

2026-07-21812 COVENTRY Sunnyvale CA 94087
Plumbing
--ISSUED
2026-07-21542 COLUMBIA Sunnyvale CA 94085
Plumbing
--ISSUED
2026-07-21973 LANTANA Sunnyvale CA 94086
Hvac
--ISSUED
2026-07-211299 AYALA Sunnyvale CA 94086
Renovation
--ISSUED
2026-07-211462 NOME Sunnyvale CA 94087
Plumbing
--ISSUED
2026-07-21813 LAKECHIME Sunnyvale CA 94089
Plumbing
--ISSUED

Parcel & Zoning Info

APN20509012
Official Lot Sqft6,098
Zoning Code--
SB 9 StatusBlocked
SB 9 Block Reasons
FEMA Special Flood Hazard Area
Development Blockers
Flood Zone (SFHA) Liquefaction
Unlock Pathways
Ministerial ADU
Entitlement RiskModerate (21/100)

ADU Potential

Feasibility Score71/100
Max ADU Units2 (ADU + JADU)
Est. ADU Size1,200 sqft
Existing Coverage23.2%

Standard lot · Corner lot · ~66 ft frontage × 101 ft deeptypical 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 Score57/100
ClassExpansion room
FAR Utilization52% of allowed
Buildable Headroom+1,327 sqft

Meaningful unused floor-area headroom under current zoning — room to add square footage. Zoning allows roughly 2,744 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

AE
Special flood hazard area; insurance may be required.

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

San Miguel Elementary

Sunnyvale

0.5 miles away
Middle School

Columbia Middle

Sunnyvale

1.2 miles away
High School

Mission Early College High

Santa Clara Unified

0.9 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

67/100

Based on recent sales velocity and local demand in 94085.

Flippability Score

50/100

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.

Based on 6 recent sales in 94085 averaging $1,005/sqft.

Hard Costs$850,400
New Build2,126 sqft
Total Capital Required$2,513,400
Estimated Resale (ARV)$2,136,630

Projected Profit

-$376,770
-15.0% ROI

Warning: Project is mathematically underwater.

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