233 Sierra Dr
Walnut Heights · Walnut Creek
Style
Single Family Residence
Zoning
R-15
Year built
1947
Existing
2 bd · 2 ba
Interior
832 sf
Lot size
9,860 sf
$879,999
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
Single-Family Homes and ADUs on Separate Lots
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.
Estimate construction proceeds, cash required, and interest-only payments.
Timeline
Typical project phasing based on the selected scenario, density, and generated development scope.
Estimated Total Duration
11 months
Design
Concept design, site planning, and early coordination.
Month 1
Permitting
Planning review, entitlement approvals, and building permits.
Month 2 - Month 4
Site Work
Utility coordination, grading, and site preparation.
Month 5 - Month 6
Construction
Vertical construction through final inspection.
Month 7 - Month 11
Design
Concept design, site planning, and early coordination.
Month 1
Permitting
Planning review, entitlement approvals, and building permits.
Month 2 - Month 4
Site Work
Utility coordination, grading, and site preparation.
Month 5 - Month 6
Construction
Vertical construction through final inspection.
Month 7 - Month 11
Property Overview
Property information from bridgeMLS
Listed by Anita Luthra · Realty ONE Group Today
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 10, 2026 at 11:41 AM PDT.