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ActiveSingle Family

$3,480,000

4186 Willmar Dr, Palo Alto 94306

Beds3
Baths2
Sqft1,415
DOM3
No Photos Available

AddressIntel AI Briefing

The property offers excellent stealth density potential by preserving the turnkey 1952 primary structure while leveraging the 100/100 ADU feasibility to add a primary ADU and JADU. This allows developers to capitalize on the high-value Palo Alto market without the upfront costs of a full teardown. The zero hazard profile and low lot coverage make this a highly secure density play.

Property Permit History

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

Recent Neighborhood Remodeling (Palo Alto)

2026-09-042330 YALE ST, PALO ALTO CA 94306
Project - Building Permit
--In Plan Check
2026-09-04864 AMES AV, PALO ALTO CA 94303
Roof: Like for like re-roof, only one structure per permit (detached single-family and duplex only, non-historic property)
--Permit Issued
2026-09-04660 PALO ALTO AV, PALO ALTO CA 94301
Solar: Roof-mounted solar system with SolarAPP+ (Single-family detached residential or duplex only)
--Pending
2026-09-041637 ESCOBITA AV, PALO ALTO CA 94306
Heat Pump Space Conditioning Systems: New, retrofit, or replacement of space conditioning system (heat pump, furnace/air handler) and associated ductwork (detached single-family, duplex, and ADUs)
--Permit Issued
2026-09-041585 EDGEWOOD DR, PALO ALTO CA 94303
Project - Building Permit
--Submitted
2026-09-044170 WALLIS CT, PALO ALTO CA 94306
Solar: Roof-mounted solar system with SolarAPP+ (Single-family detached residential or duplex only)
--Pending

Parcel & Zoning Info

APN13728014
Official Lot Sqft7,841
Zoning CodeR-1
SB 9 StatusEligible · up to 4 units
Unlock Pathways
Ministerial ADU Ministerial SB 9 Density Bonus
Entitlement RiskLow (0/100)

ADU Potential

Feasibility Score100/100
Max ADU Units2 (ADU + JADU)
Est. ADU Size1,200 sqft
Existing Coverage18%

Standard lot · Corner lot · ~87 ft frontage × 125 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 Score65/100
ClassTeardown candidate
FAR Utilization46% of allowed
Buildable Headroom+1,687 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 3,102 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: PAMC 18.12.040 Table 2; max house size 6,000 sqft (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

Juana Briones Elementary

Palo Alto Unified

0.3 miles away
Middle School

Ellen Fletcher Middle

Palo Alto Unified

0.2 miles away
High School

Henry M. Gunn High

Palo Alto Unified

0.3 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

72/100

Based on recent sales velocity and local demand in 94306.

Flippability Score

75/100

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

Bidding War Prob.

54%

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 3,102 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 Palo Alto (94306): $1,827/sqft. Sized within 25% of the 3,100 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$1,705,000
New Build3,100 sqft
Total Capital Required$5,360,000
Estimated Resale (ARV)$5,663,700
Cost of Sale (5%)-$283,185
Net Proceeds$5,380,515

Projected Profit

$20,515
0.4% ROI

Warning: Margin is tight for the construction risk.

Recent Comparables (Palo Alto 94306)

Sized to the modelled 3,100 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.

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