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2435 Valley Street

Poets Corner · Berkeley

2435 Valley Street

Style

Single Family Residence

Zoning

R-2

Year built

1908

Existing

2 bd · 1 ba

Interior

1,067 sf

Lot size

3,313 sf

$995,000

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
$261K-$369K estimated cost
$545K-$1.1M future value add

Single-Family or Multi-Family Homes on Separate Lots

Add 1 potential unit
$234K-$543K estimated cost
$387K-$1.8M 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
$1,286,275
ADU scenario · 1 new unit · 373 new sf
Build Cost / SF
$
ADU build cost$261,425
20% of project cost
Property acquisition$1,024,850
80% of project cost
Estimated Project Value (2 Year)
$1,540,420
$1,453,649 1-year project value ·
19.8% total ROI
$254,145 potential ROI
Added scenario value$545,420
35% of completed value
Current property value$995,000
65% of completed value
Acquisition80%
Soft Costs5%
Hard Costs16%
Value Projections
Today list price$995,000
24-month added value$545,420
24-month project value$1,540,420
Potential ROI$254,145
Assumptions
Current sale / sf$1,225
Average sale / sf$1,034
Annual growth18.9%
Comp bedrooms2
Comp radius5 miles
Price / sf sourceAverage sold comps
Added sqft373 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
$261K
Per Home
$1.29M
# of original sq ft
812
# of new sq ft
373
Total sq ft
1,185
Per Sq Ft
N/A
Per Sq Ft
$701
Per Sq Ft
$1085
Total
$1.02M
Total
$261K
Total
$1.29M
Financing Estimate
Construction Loan

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

Construction Estimate
Loan Proceeds
Construction basis
Soft + hard costs
$261K
Loan proceeds
65% loan-to-cost
$170K
Cash required
Unfinanced development cost
$91K
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 Grace Bishop · Red Oak Realty

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 August 25, 2026 at 5:36 PM PDT.

Location

Data from Type Five
Jurisdiction
Berkeley
Zoning
R-2
Overlay Districts
None
Climate Zone
Zone 3
Transit Access (1/2 mi)
Yes (Dwight Way & Valley St)

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
Berkeley Fire Zone 1
Fire Responsibility
LRA
Wildfire Protection Req.
No
2435 Valley Street, Berkeley Infill Potential — Infillworks