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ActiveSingle Family

$2,098,000

912 Viewridge Dr, San Mateo 94403

Beds3
Baths2
Sqft1,910
DOM5
No Photos Available

AddressIntel AI Briefing

While the low lot coverage and massive 10,922 square foot lot suggest strong teardown-and-mansionize potential, the active landslide zone blocker severely limits site construction. A stealth density approach of primary + ADU + JADU remains the optimal, albeit cautious, path to add square footage within legal parameters.

Property Permit History

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

Recent Neighborhood Remodeling (San Mateo)

2026-07-22615 9TH AVE SAN MATEO CA 94402-1427
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$10,000Issued
2026-07-22639 PICO AVE SAN MATEO 94403-1239 CA
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$25,000Issued
2026-07-22128 BURBANK AVE SAN MATEO 94403-5127 CA
Single Family (Alteration/Repair) - Alter
$15,776Issued
2026-07-21142 30TH AVE Unit: B SAN MATEO CA 94403
Single Family (Alteration/Repair) - Alter
$24,271Issued
2026-07-20105 HAYWARD AVE Unit: B SAN MATEO CA 94401-4241
Single Family (Alteration/Repair) - Alter
$142,471Issued
2026-07-201825 NASH DR SAN MATEO CA 94401-3128
Single Family (New) - New
$1,405,255Issued

Parcel & Zoning Info

APN042271290
Official Lot Sqft10,922
Zoning CodeNO DATA ASSIGNED
SB 9 StatusLikely · up to 4 units
SB 9 Block Reasons No SB 9 disqualifiers found
Development Blockers
Landslide
Unlock Pathways
Ministerial ADU Ministerial SB 9 Density Bonus
Entitlement RiskLow (0/100)

ADU Potential

Feasibility Score94/100
Max ADU Units2 (ADU + JADU)
Est. ADU Size1,200 sqft
Existing Coverage17.5%

Flag / irregular · ~141 ft frontage × 153 ft deepa tucked-away rear unit is very private; access is typically via the pole driveway.

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 Score64/100
ClassTeardown candidate
FAR Utilization48% of allowed
Buildable Headroom+2,074 sqft

Small, older home using a low share of the allowable building envelope on a sizable lot — a scrape-and-rebuild or major-expansion play. Zoning allows roughly 3,984 sqft of gross floor area on this lot.

Screening estimate comparing existing living area to the city's single-family floor-area limit. FAR figure is a discretionary-review trigger, not a hard cap — treat as approximate. Source: San Mateo Muni Code 27.18.060 (R1-B/C); 6,000 sqft cap (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

Moderate
Elevated fire risk; impacts insurance cost and building materials.

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

Laurel Elementary

San Mateo-Foster City

0.7 miles away
Middle School

Abbott Middle

San Mateo-Foster City

0.4 miles away
High School

Hillsdale High

San Mateo Union High

0.5 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

83/100

Based on recent sales velocity and local demand in 94403.

Flippability Score

58/100

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

Bidding War Prob.

64%

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 94403 averaging $945/sqft.

Hard Costs$1,146,000
New Build2,865 sqft
Total Capital Required$3,419,000
Estimated Resale (ARV)$2,707,425

Projected Profit

-$711,575
-20.8% ROI

Warning: Project is mathematically underwater.

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