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ActiveSingle Family

$4,299,998

1340 Rosalia Ave, Sunnyvale 94087

Beds5
Baths4.5
Sqft3,200
DOM169
No Photos Available

AddressIntel AI Briefing

This home was built in 2026, making a teardown out of the question and leaving no room for a flip margin. With 95/100 ADU feasibility, the optimal play is stealth density via ADU addition to generate secondary rental income. This capitalizes on the strong Sunnyvale job market and high median incomes.

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

APN31311020
Official Lot Sqft9,148
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 Score95/100
Max ADU Units2 (ADU + JADU)
Est. ADU Size1,200 sqft
Existing Coverage35%

Standard lot · Corner lot · ~76 ft frontage × 126 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.

Seller Motivation

Motivation Score30/100
Some motivation
90+ days on market

Inferred from days on market and listing-description language (e.g. "as-is", "estate sale", "motivated seller"). A screening heuristic for likely negotiability, not a statement about the seller's circumstances.

Redevelopment Potential

Redevelopment Score15/100
ClassBuilt out
FAR Utilization89% of allowed
Buildable Headroom+400 sqft

Existing home already uses most of the allowable floor area — little expansion headroom. Zoning allows roughly 3,600 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.

Nearby Public Schools

Elementary School

Laurelwood Elementary

Santa Clara Unified

0.6 miles away
Middle School

Marian A. Peterson Middle

Santa Clara Unified

0.1 miles away
High School

New Valley Continuation High

Santa Clara Unified

0.8 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

30/100

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

Bidding War Prob.

1%

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.

Hard Costs$1,920,000
New Build4,800 sqft
Total Capital Required$6,394,998
Estimated Resale (ARV)$6,648,000

Projected Profit

$253,002
4.0% ROI

Warning: Margin is tight for the construction risk.

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