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ActiveSingle Family

$3,598,000

821 Mulberry Ln, Sunnyvale 94087

Beds4
Baths3.5
Sqft2,034
DOM7
No Photos Available

AddressIntel AI Briefing

Built recently in 2019, this home's outstanding condition eliminates any teardown or split potential. The optimal strategy is stealth density by maximizing accessory dwelling units on the remaining parcel footprint.

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

APN19829030
Official Lot Sqft6,534
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 Coverage31.1%

Standard lot · Corner lot · ~83 ft frontage × 113 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 Score50/100
ClassExpansion room
FAR Utilization69% of allowed
Buildable Headroom+906 sqft

Meaningful unused floor-area headroom under current zoning — room to add square footage. Zoning allows roughly 2,940 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

Cherry Chase Elementary

Sunnyvale

0.3 miles away
Middle School

Sunnyvale Middle

Sunnyvale

0.4 miles away
High School

Alta Vista High

Mountain View-Los Altos Union High

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.

75%

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$1,220,400
New Build3,051 sqft
Total Capital Required$4,993,400
Estimated Resale (ARV)$4,225,635

Projected Profit

-$767,765
-15.4% ROI

Warning: Project is mathematically underwater.

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