Advisory Board: Alamo Municipal Advisory Council
Subject: 20 Castle Crest Road, Alamo
Information:
Application & Administrative Overview
• County File Number: CDVR26-01013
• Related ADU File Number: CDSU26-00007
• Applicant & Property Owner: Jerod & Courtney Creese
• Project Address: 20 Castle Crest Rd, Alamo, CA 94507 (APN: 188-200-008)
• Application Date: August 15, 2026
• Project Planner: Maria Lara-Lemus, Contra Costa County Department of Conservation and Development
• Zoning District: R-20 (Single-Family Residential)
• General Plan Designation: RL (Residential Low Density, 1-3 du/net acre)
• Fire District: Consolidated Fire (CCCFPD)
• Sanitary District: Central Sanitary District
• Water District: East Bay MUD
2. Requested Variance & Project Scope
• Project Description: Proposal to attach and expand an existing detached garage and construct a new Accessory Dwelling Unit (ADU) above the garage.
• Variance Request:
o Side Yard Setback: Requesting 9 feet 9 inches where 20 feet is required.
o Aggregate Side Yard Setback: Requesting 24 feet 9 inches where 35 feet is required.
3. Building & Site Specifications
• Lot Area: 26,937.5 sq. ft. (~0.62 Acres)
• Original Year Built: 1949
• Construction Type: Type V Non-Rated (No sprinklers)
• Building Height: 2 stories (22 feet 9 inches proposed; 28 feet maximum allowed)
Square Footage Breakdown:
• Main Residence: 3,456 sq. ft. (No change)
• Garage Expansion: Expanding from 383 sq. ft. to 650 sq. ft.
• New ADU (2nd Floor): 703 sq. ft. (Comprising a bedroom, open living/kitchen, bathroom, and balcony deck)
• Total Proposed Addition: 1,353 sq. ft.
• Total Building Area: 4,809 sq. ft. total
4. Project Design Team
• Structural Engineering & Design: APE Structural Engineering Inc. (Santa Barbara, CA)
• Energy Consultant (Title 24): Wade Energy (Pleasant Hill, CA)
• Contractor: Owner-Builder