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ActiveSingle Family

$2,250,000

1817 Bayview Ave, Belmont 94002

Beds3
Baths2.5
Sqft1,852
DOM1
No Photos Available

AddressIntel AI Briefing

This updated home sits on a highly covered lot in an affluent neighborhood, leaving little room for heavy expansion. The optimal play is stealth density: primary + ADU + JADU to squeeze out marginal rental yield. High owner occupancy and stable local metrics favor a long-term hold.

Property Permit History

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

Recent Neighborhood Remodeling (Belmont)

2026-09-04806 ANITA AVE
ALTERATION - INTERIOR REMODEL
--APPROVED
2026-09-044112 MARSTEN AVE
ALTERATION - RETAINING WALL
--IN REVIEW
2026-09-033200 UPPER LOCK AVE
ALTERATION - DECK
--ACTIVE
2026-09-022 LOMA VISTA LN
ALTERATION - ALTERATION
--ACTIVE
2026-09-029 CAMINO VISTA CT
ALTERATION - ALTERATION
--ACTIVE
2026-08-281641 SIXTH AVE
ALTERATION - ALTERATION
--APPROVED

Parcel & Zoning Info

APN044051330
Official Lot Sqft4,000
Zoning CodeNO DATA ASSIGNED
SB 9 StatusLikely · up to 4 units
Unlock Pathways
Ministerial ADU Ministerial SB 9 Density Bonus
Entitlement RiskLow (0/100)

ADU Potential

Feasibility Score64/100
Max ADU Units2 (ADU + JADU)
Est. ADU Size1,200 sqft
Existing Coverage46.3%

Flag / irregular · Corner lot · ~89 ft frontage × 94 ft deep, a tucked-away rear unit is very private; access is typically via the pole driveway. 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 Score15/100
ClassBuilt out
FAR Utilization116% of allowed
Buildable Headroom+0 sqft

Existing home already uses most of the allowable floor area, little expansion headroom. Zoning allows roughly 1,600 sqft of gross floor area on this lot.

Screening estimate comparing existing living area to the city's single-family floor-area limit. City sets no explicit FAR (or is not individually curated); allowable area is a conservative estimate. Source: Belmont Zoning Ordinance 4.2.3(d) Table 5 (Lot Size/Intensity) as a CAP on the default estimate; Table 4 slope FAR NOT applied, no per-parcel slope available (as of 2026-09-03). 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

Laurel Elementary

San Mateo-Foster City

0.7 miles away
Middle School

Abbott Middle

San Mateo-Foster City

0.9 miles away
High School

Hillsdale High

San Mateo Union High

1.0 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 94002.

Flippability Score

15/100

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

Bidding War Prob.

40%

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 1,600 sqft here, less than the 1,852 sqft standing today, so a compliant rebuild would be smaller than the existing house. We don't quote a return on this one. Demolishing generally forfeits the existing non-conforming floor area, so treat it as a remodel or check the local code for what it lets you rebuild.

Median of 12 recent single-family sales in Belmont (94002): $1,276/sqft. Sized within 25% of the 1,900 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.

Carry on total capital for the project duration. At 0% the model is a cash purchase; 12 months at a typical construction-loan rate moves ROI by 6 to 10 points on a deal this size, so price it with your real rate.

Hard Costs$880,000
New Build1,600 sqft
Total Capital Required$3,305,000
Estimated Resale (ARV)$2,041,600
Cost of Sale (5%)-$102,080
Net Proceeds$1,939,520

Projected Profit

-$1,365,480
-41.3% ROI

Warning: Project is mathematically underwater.

Recent Comparables (Belmont 94002)

Sized to the modelled 1,900 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.

2715 Belmont Canyon Rd

Sold
$2,715,000
Sold: 2026-09-01
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Sqft: 1960
$/Sqft: $1,385

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$2,685,000
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$/Sqft: $1,215

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Sqft: 1760
$/Sqft: $1,405

1348 Paloma Ave

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$1,950,000
Sold: 2026-08-05
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Sqft: 1850
$/Sqft: $1,054

2433 Hastings Dr

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$2,400,000
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3307 Bay Ct

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2303 Hastings Dr

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505 Hiller St

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2124 Forest Ave

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$/Sqft: $1,281

2019 Mezes Ave

Sold
$2,200,000
Sold: 2026-07-09
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$/Sqft: $1,272

2326 Buena Vista Ave

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$2,550,000
Sold: 2026-07-06
Lot: 7,583
Sqft: 1600
$/Sqft: $1,594

2045 Mezes Ave

Sold
$2,930,000
Sold: 2026-06-30
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Sqft: 1850
$/Sqft: $1,584