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1151 Keaveny Ct

Buena Vista · Walnut Creek

1151 Keaveny Ct

Style

Single Family Residence

Zoning

PD

Year built

2001

Existing

5 bd · 3 ba

Interior

3,079 sf

Lot size

10,916 sf

$1,950,000

For Sale

Development Scenarios

Here's how you can use existing housing laws to add more housing units to this property. For illustrative purposes only, as actual site conditions should be verified in person.

ADU

Add 1 potential unit to the backyard
$272K-$502K estimated cost
$455K-$1.1M future value add
Loading infill model...

Density level

Density controls will appear after the model finishes loading.

Generating the lot configuration for this scenario and density...

Financials

These estimates model the potential development economics for this scenario using local construction costs and comparable sale prices. They're provided for illustrative purposes only and aren't financial advice.

Selected ScenarioADU
Estimated Project Cost
$2,280,302
ADU scenario · 1 new unit · 400 new sf
Build Cost / SF
$
ADU build cost$271,802
12% of project cost
Property acquisition$2,008,500
88% of project cost
Estimated Project Value (2 Year)
$2,404,866
$2,310,178 1-year project value ·
5.5% total ROI
$124,564 potential ROI
Added scenario value$454,866
19% of completed value
Current property value$1,950,000
81% of completed value
Acquisition88%
Soft Costs3%
Hard Costs9%
Value Projections
Today list price$1,950,000
24-month added value$454,866
24-month project value$2,404,866
Potential ROI$124,564
Assumptions
Current sale / sf$633
Average sale / sf$713
Annual growth26.3%
Comp bedrooms5
Comp radius5 miles
Price / sf sourceAverage sold comps
Added sqft400 sf
Cost Breakdown

Unit Economics
Original Property
Acquisition only
Build New Homes
Soft + hard costs
All-In
Total project
# of original homes
N/A
# of new homes
1
Total homes
1
Per Home
N/A
Per Home
$272K
Per Home
$2.28M
# of original sq ft
3,079
# of new sq ft
400
Total sq ft
3,479
Per Sq Ft
N/A
Per Sq Ft
$680
Per Sq Ft
$655
Total
$2.01M
Total
$272K
Total
$2.28M
Financing Estimate
Construction Loan

Estimate construction proceeds, cash required, and interest-only payments.

Construction Estimate
Loan Proceeds
Construction basis
Soft + hard costs
$272K
Loan proceeds
65% loan-to-cost
$177K
Cash required
Unfinanced development cost
$95K
Monthly payment
Interest-only estimate
$2K

Timeline

Typical project phasing based on the selected scenario, density, and generated development scope.

Estimated Total Duration

11 months

ADU

Design

Concept design, site planning, and early coordination.

1 month

Month 1

Permitting

Planning review, entitlement approvals, and building permits.

3 months

Month 2 - Month 4

Site Work

Utility coordination, grading, and site preparation.

2 months

Month 5 - Month 6

Construction

Vertical construction through final inspection.

5 months

Month 7 - Month 11

Property Overview

MLS: bridgeMLS

Property information from bridgeMLS

Listed by Helene Freeman · Christie's Intl RE Sereno

bridgeMLS © 2026. Information Deemed Reliable but not Guaranteed. This information is being provided by bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated at June 3, 2026 at 11:52 AM PDT.

Location

Data from Type Five
Jurisdiction
Walnut Creek
Zoning
PD
Overlay Districts
None
Climate Zone
Zone 12
Transit Access (1/2 mi)
-

Natural Hazards

Data from Type Five
Flood Zone
X
Liquefaction Risk
Yes
Landslide Risk
No
Fault Zone
No

Fire Risk

Data from Type Five
Fire Hazard Zone
NOT IN A VHFHZ
Fire Responsibility
LRA
Wildfire Protection Req.
No
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