Browse

10774 Hellman St

Grass Valley · Oakland

10774 Hellman St

Style

Single Family Residence

Zoning

RH-4

Year built

1963

Existing

4 bd · 3 ba

Interior

1,900 sf

Lot size

5,246 sf

$1,225,000

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.

Single-Family Homes and ADUs on Separate Lots

Add 1 potential unit
$341K estimated cost
$515K future value add

Applicable but Space Constrained: ADU

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 ScenarioSB9
Estimated Project Cost
$1,603,247
SB9 scenario · 1 new unit · 633 new sf
Build Cost / SF
$
SB9 build cost$341,497
21% of project cost
Property acquisition$1,261,750
79% of project cost
Estimated Project Value (2 Year)
$1,740,296
$1,626,009 1-year project value ·
8.5% total ROI
$137,049 potential ROI
Added scenario value$515,296
30% of completed value
Current property value$1,225,000
70% of completed value
Acquisition79%
Soft Costs5%
Hard Costs16%
Value Projections
Today list price$1,225,000
24-month added value$515,296
24-month project value$1,740,296
Potential ROI$137,049
Assumptions
Current sale / sf$645
Average sale / sf$493
Annual growth28.5%
Comp bedrooms4
Comp radius5 miles
Price / sf sourceAverage sold comps
Added sqft633 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
$341K
Per Home
$1.60M
# of original sq ft
1,900
# of new sq ft
633
Total sq ft
2,533
Per Sq Ft
N/A
Per Sq Ft
$539
Per Sq Ft
$633
Total
$1.26M
Total
$341K
Total
$1.60M
Financing Estimate
Construction Loan

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

Construction Estimate
Loan Proceeds
Construction basis
Soft + hard costs
$341K
Loan proceeds
65% loan-to-cost
$222K
Cash required
Unfinanced development cost
$120K
Monthly payment
Interest-only estimate
$2K

Timeline

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

Estimated Total Duration

15 months

SB9

Design

Concept design, site planning, and early coordination.

2 months

Month 1 - Month 2

Permitting

Planning review, entitlement approvals, and building permits.

4 months

Month 3 - Month 6

Site Work

Utility coordination, grading, and site preparation.

2 months

Month 7 - Month 8

Construction

Vertical construction through final inspection.

7 months

Month 9 - Month 15

Property Overview

MLS: bridgeMLS

Property information from bridgeMLS

Listed by Anthony Lim · 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 August 21, 2026 at 12:36 PM PDT.

Location

Data from Type Five
Jurisdiction
Oakland
Zoning
RH-4
Overlay Districts
None
Climate Zone
Zone 3
Transit Access (1/2 mi)
-

Natural Hazards

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

Fire Risk

Data from Type Five
Fire Hazard Zone
VHFHZ
Fire Responsibility
LRA
Wildfire Protection Req.
Yes
View on GoogleView on Zillow