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815 45Th St

Longfellow · Oakland

815 45Th St

Style

Single Family Residence

Zoning

RM-2

Year built

1910

Existing

3 bd · 3 ba

Interior

1,636 sf

Lot size

2,494 sf

$899,000

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
$255K-$357K estimated cost
$476K-$952K future value add

Applicable but Space Constrained: Single-Family or Multi-Family Homes on Separate Lots

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
$1,180,861
ADU scenario · 1 new unit · 356 new sf
Build Cost / SF
$
ADU build cost$254,891
22% of project cost
Property acquisition$925,970
78% of project cost
Estimated Project Value (2 Year)
$1,374,893
$1,278,480 1-year project value ·
16.4% total ROI
$194,032 potential ROI
Added scenario value$475,893
35% of completed value
Current property value$899,000
65% of completed value
Acquisition78%
Soft Costs5%
Hard Costs16%
Value Projections
Today list price$899,000
24-month added value$475,893
24-month project value$1,374,893
Potential ROI$194,032
Assumptions
Current sale / sf$550
Average sale / sf$850
Annual growth25.4%
Comp bedrooms3
Comp radius5 miles
Price / sf sourceAverage sold comps
Added sqft356 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
$255K
Per Home
$1.18M
# of original sq ft
1,636
# of new sq ft
356
Total sq ft
1,992
Per Sq Ft
N/A
Per Sq Ft
$716
Per Sq Ft
$593
Total
$926K
Total
$255K
Total
$1.18M
Financing Estimate
Construction Loan

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

Construction Estimate
Loan Proceeds
Construction basis
Soft + hard costs
$255K
Loan proceeds
65% loan-to-cost
$166K
Cash required
Unfinanced development cost
$89K
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 Kenneth Er · Compass

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 July 22, 2026 at 11:55 AM PDT.

Location

Data from Type Five
Jurisdiction
Oakland
Zoning
RM-2
Overlay Districts
None
Climate Zone
Zone 3
Transit Access (1/2 mi)
Yes (Market St & 45th 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
NOT IN VHFHZ
Fire Responsibility
LRA
Wildfire Protection Req.
No
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