$1,395,000
641 Waltermire St, Belmont 94002
AddressIntel AI Briefing
The optimal play here is stealth density: primary + ADU + JADU to capitalize on the high ADU feasibility, though the local liquefaction hazard acts as a significant cost-escalating blocker for foundation work. While the 1939 bungalow is updated, its tiny 878 sqft footprint on a nearly 4k sqft lot offers excellent long-term development value once mitigation costs are priced in.
Property Permit History
Recent Neighborhood Remodeling (Belmont)
Parcel & Zoning Info
ADU Potential
Flag / irregular · ~92 ft frontage × 95 ft deep, a 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
Meaningful unused floor-area headroom under current zoning, room to add square footage. Zoning allows roughly 1,574 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: conservative default (0.40 FAR — city not individually curated) (as of 2026-06-30). Verify FAR, coverage, setbacks, and height with the local planning dept.
Hazard Snapshot
Flood Zone
Fire Severity
Liquefaction
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
Nesbit Elementary
Belmont-Redwood Shores Elementary
Tierra Linda Middle
San Carlos Elementary
Design Tech High
San Mateo Union High
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
58/100
Measures neighborhood renovation density vs. recent permits on this property.
Bidding War Prob.
46%
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.
We don't hold this jurisdiction's floor-area rule, so the default builds to roughly 1,574 sqft from a conservative 0.40 FAR approximation, a starting point and not a zoning answer. Check the local code before you rely on it.
Median of 12 recent single-family sales in Belmont (94002): $1,383/sqft. Sized within 25% of the 1,600 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.
Projected Profit
Warning: Project is mathematically underwater.
Recent Comparables (Belmont 94002)
Sized to the modelled 1,600 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.