Planning Application and Building Permits
The Application and Permit Center strives to make permit processing easier for applicants seeking land use or building permits by providing clear information, a solid understanding of the development process, and excellent customer service.
Contra Costa County has adopted an ordinance that regulates the renting of residential dwelling units for periods of 30 consecutive days or less. Applications must be submitted and a permit issued prior to operation of a short-term rental. Read more...
30 Muir Road
Martinez, CA 94553
Map to Martinez Office
Application and Permit Center: 925-655-2700
Contact Us - Online Form
Monday - Thursday, 7:30 a.m. to 5:00 p.m.
Friday, 7:30 a.m. to 4:00 p.m.
3685 Mt Diablo Boulevard
Lafayette, CA 94549
Map to Lafayette Office
Email Lamorinda Office
Monday - Thursday, 8:00 a.m. to 11:30 a.m. and 12:30 p.m. to 5:00 p.m.
Friday, 8:00 am to 11:30 a.m. and 12:30 p.m. to 4:00 p.m.
Services offered - by appointment only
- Structural Engineer
- Plan Checkers
Codes, Plans and Ordinances
Building Code and Ordinances - Title 7 of the County Code (the Building Code) and relevant Building Ordinances.
Zoning Code and Ordinances - Title 8 of the County Code (the Zoning Code), relevant Zoning Ordinances, and community P-1 Zoning Codes.
General Plan - The Contra Costa County General Plan expresses the broad goals and policies, and specific implementation measure, which guide decisions on future growth, development, and conservation of resources through 2020.
Specific Plans - Specific Plans are a special set of development standards that apply to a particular geographic Area. Many of the unincorporated communities in Contra Costa County have Specific Plans.