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ActiveSingle Family

$2,248,000

883 Roble Dr, Sunnyvale 94086

Beds3
Baths2
Sqft1,533
DOM5
No Photos Available

AddressIntel AI Briefing

The optimal play is stealth density: primary + ADU + JADU, allowing for rapid value-add without the heavy cost of a full teardown. The site is free of geological and fire hazards, streamlining the ministerial approval pipeline. The neighborhood's demographics and low owner-occupancy profile make this highly suitable for a high-yield rental hold.

Property Permit History

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

Recent Neighborhood Remodeling (Sunnyvale)

2026-10-21 • 1075 HAMSHIRE CT SUNNYVALE CA 94087
Engineering Project - Encroachment Permit
--Active - Issued
2026-10-21 • 1081 BAKER CT SUNNYVALE CA 94087
Minor Building Permit
$3,000Active - Issued
2026-10-21 • 425 S FAIR OAKS AV SUNNYVALE CA 94086
Minor Building Permit
$9,000Active - Issued
2026-10-21 • 1215 MANDARIN DR SUNNYVALE CA 94087
SolarAPP+
$32,000Active - Issued
2026-10-20 • 823 E HOMESTEAD RD SUNNYVALE CA 94087
Building Project
$14,000Active - Issued
2026-10-20 • 395 W EL CAMINO REAL SUNNYVALE CA 94086
Building Project
$20,000Active - Issued

Parcel & Zoning Info

APN21339020
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 Coverage23.5%

Standard lot · Corner lot · ~70 ft frontage × 95 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 Score49/100
ClassExpansion room
FAR Utilization52% of allowed
Buildable Headroom+1,407 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. 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

Ponderosa Elementary

Santa Clara Unified

0.2 miles away
Middle School

Marian A. Peterson Middle

Santa Clara Unified

0.7 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

75/100

Based on recent sales velocity and local demand in 94086.

Flippability Score

70/100

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

Bidding War Prob.

33%

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 2,940 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 (94086): $1,235/sqft, plus 5% because new houses sold at a median 1.07x their comps across 239 real rebuilds. Sized within 25% of the 2,900 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$1,595,000
New Build2,900 sqft
Total Capital Required$4,018,000
Estimated Resale (ARV)$3,761,300
Cost of Sale (5%)-$188,065
Carry (33mo @ 7%)-$603,103
Net Proceeds$2,970,133

Projected Profit

-$1,047,868
-26.1% ROI

Warning: Project is mathematically underwater.

Recent Comparables (Sunnyvale 94086)

Sized to the modelled 2,900 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.

326 Polaris Ter

Sold
$2,630,000
Sold: 2026-10-21
Lot: 2,603
Sqft: 2191
$/Sqft: $1,200

457 Bryan Ave

Sold
$3,550,000
Sold: 2026-10-05
Lot: 7,100
Sqft: 2424
$/Sqft: $1,465

826 W Olive Ave

Sold
$2,565,000
Sold: 2026-09-29
Lot: 3,748
Sqft: 2265
$/Sqft: $1,132

926 Mesa Oak Ct

Sold
$3,200,000
Sold: 2026-09-14
Lot: 6,962
Sqft: 2400
$/Sqft: $1,333

1092 Fuchsia Dr

Sold
$3,650,000
Sold: 2026-09-02
Lot: 10,000
Sqft: 2376
$/Sqft: $1,536

320 Waverly St

Sold
$3,100,000
Sold: 2026-08-10
Lot: 5,950
Sqft: 2941
$/Sqft: $1,054

401 Carroll St

Sold
$2,900,000
Sold: 2026-07-24
Lot: 4,000
Sqft: 2358
$/Sqft: $1,230

721 Valonia Oak Ter

Sold
$3,478,000
Sold: 2026-07-10
Lot: 3,711
Sqft: 2710
$/Sqft: $1,283

982 Starflower Ct

Sold
$2,900,000
Sold: 2026-07-08
Lot: 7,800
Sqft: 2713
$/Sqft: $1,069

986 Starflower Ct

Sold
$3,200,000
Sold: 2026-06-26
Lot: 7,800
Sqft: 2265
$/Sqft: $1,413

869 Lusterleaf Dr

Sold
$2,725,000
Sold: 2026-06-22
Lot: 6,080
Sqft: 2204
$/Sqft: $1,236

718 Timberpine Ave

Sold
$3,830,000
Sold: 2026-06-10
Lot: 6,000
Sqft: 3106
$/Sqft: $1,233