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ActiveSingle Family

$3,150,000

256 E Charleston Rd, Palo Alto 94306

Beds4
Baths3
Sqft2,040
DOM77
No Photos Available

AddressIntel AI Briefing

The best play here is an SB 9 lot split into multiple units to fully capitalize on the generous 7.8k sqft parcel in high-income Palo Alto. Developers must mitigate liquefaction issues during site prep, but a projected 36.5% ROI makes this a highly lucrative option.

Property Permit History

DateProject TypeStatusValuationContractor
2024-12-19Finaled$15,600BENJAMIN FRANKLIN PLUMBING
2024-01-30Finaled--SYNERGY COMPANIES

Recent Neighborhood Remodeling (Palo Alto)

2026-10-21 • 829 WAVERLEY ST, PALO ALTO CA 94301
Revision-Building Permit
--In Plan Check
2026-10-21 • 433 KINGSLEY AV, PALO ALTO CA 94301
Water Heater (electric): One heat pump water heater (detached single-family and duplex only)
--Pending
2026-10-21 • 176 WAVERLEY ST, PALO ALTO CA 94301
Project - Building Permit
--Pending Resubmittal
2026-10-21 • 317 SHASTA DR, PALO ALTO CA 94306
Revision-Building Permit
--In Plan Check
2026-10-21 • 3415 HILLVIEW AV, PALO ALTO CA 94304
Project - Building Permit
--Submitted
2026-10-21 • 180 EL CAMINO REAL, STE AA1020, PALO ALTO CA 94304
Project - Building Permit
--In Plan Check

Parcel & Zoning Info

APN14725003
Official Lot Sqft7,841
Zoning CodeR-1 (8000)(S)
SB 9 StatusEligible · up to 4 units
SB 9 Block Reasons No SB 9 disqualifiers found
Development Blockers
Liquefaction
Unlock Pathways
Ministerial ADU Ministerial SB 9 Density Bonus
Entitlement RiskLow (0/100)

ADU Potential

Feasibility Score92/100
Max ADU Units2 (ADU + JADU)
Est. ADU Size1,200 sqft
Existing Coverage26%

Flag / irregular · Corner lot · ~123 ft frontage × 132 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.

Seller Motivation

Motivation Score20/100
Low motivation
60+ days on market

Inferred from days on market and listing-description language (e.g. "as-is", "estate sale", "motivated seller"). A screening heuristic for likely negotiability, not a statement about the seller's circumstances.

Redevelopment Potential

Redevelopment Score55/100
ClassExpansion room
FAR Utilization66% of allowed
Buildable Headroom+1,062 sqft

Meaningful unused floor-area headroom under current zoning, room to add square footage. 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

Yes
In a mapped liquefaction zone. May require specialized foundation engineering.

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

Herbert Hoover Elementary

Palo Alto Unified

0.2 miles away
Middle School

Jane Lathrop Stanford Middle

Palo Alto Unified

0.3 miles away
High School

Henry M. Gunn High

Palo Alto Unified

1.4 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

70/100

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.

50%

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): $1,693/sqft, plus 5% because new houses sold at a median 1.07x their comps across 239 real rebuilds. 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.

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$1,705,000
New Build3,100 sqft
Total Capital Required$5,030,000
Estimated Resale (ARV)$5,511,800
Cost of Sale (5%)-$275,590
Carry (33mo @ 7%)-$787,325
Net Proceeds$4,448,885

Projected Profit

-$581,115
-11.6% ROI

Warning: Project is mathematically underwater.

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.

3005 Cowper St

Sold
$5,000,000
Sold: 2026-10-22
Lot: 7,998
Sqft: 3120
$/Sqft: $1,603

359 Campesino Ave

Sold
$6,910,000
Sold: 2026-10-21
Lot: 7,840
Sqft: 2823
$/Sqft: $2,448

3423 Ashton Ct

Sold
$5,000,000
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Sqft: 2404
$/Sqft: $2,080

2928 Bryant St

Sold
$7,210,000
Sold: 2026-10-08
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Sqft: 3138
$/Sqft: $2,298

651 E Meadow Dr

Sold
$3,850,000
Sold: 2026-09-30
Lot: 6,572
Sqft: 2438
$/Sqft: $1,579

3751 El Centro St

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$4,600,000
Sold: 2026-09-30
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Sqft: 3635
$/Sqft: $1,265

3855 Magnolia Dr

Sold
$5,350,000
Sold: 2026-09-24
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Sqft: 2701
$/Sqft: $1,981

455 Margarita Ave

Sold
$3,600,000
Sold: 2026-09-21
Lot: 5,400
Sqft: 2478
$/Sqft: $1,453

3655 LA Calle Ct

Sold
$5,200,000
Sold: 2026-09-17
Lot: 19,500
Sqft: 3684
$/Sqft: $1,412

2929 Ramona St

Sold
$2,900,000
Sold: 2026-08-25
Lot: 8,113
Sqft: 3654
$/Sqft: $794

3359 Saint Michael Ct

Sold
$4,725,000
Sold: 2026-08-24
Lot: 6,832
Sqft: 2650
$/Sqft: $1,783

1895 Park Blvd

Sold
$5,200,000
Sold: 2026-07-30
Lot: 7,123
Sqft: 2438
$/Sqft: $2,133