| Code Type | Code Model | Amendment Contact |
| Building/Dwelling Code | California Building Code 2007 (IBC 2006) | International Code Council |
| Structural Code | California Building Code 2007 (IBC 2006) | International Code Council |
| Plumbing Code | California Building Standards Code | Local Code |
| Mechanical Code | California Building Standards Code | Local Code |
| Electrical Code | California Electrical Code 2007 (NEC 2005) | International Code Council |
| Accessibility Code | California Building Code 2007 (Title 24, Part 2) | California Access Compliance, (916) 327-9698 |
| Energy Code | California Energy Code 2007 (Title 24, Part 6) | International Code Council and online for download |
| Elevator Code | California Elevator Safety Construction Code 2001 (California Code of Regulations, Title 8) | International Code Council or (800) 423-6587 |
| Other Codes | All 2007 California Building Codes | |
| Jurisdictional Area | Contact |
| Structural | Building Department Phone: (925) 779-7065 Fax: (925) 779-7034 |
| Plumbing | Building Department Phone: (925) 779-7065 Fax: (925) 779-7034 |
| Mechanical | Building Department Phone: (925) 779-7065 Fax: (925) 779-7034 |
| Electrical | Building Department Phone: (925) 779-7065 Fax: (925) 779-7034 |
| Accessibility | Building Department Phone: (925) 779-7065 Fax: (925) 779-7034 |
| Historic Preservation | Building Department Phone: (925) 779-7065 Fax: (925) 779-7034 |
| Environmental | Engineering Phone: (925) 779-7035 Fax: (925) 779-7034 |
| Fire Marshal | Contra Costa Fire Dept. Phone: (925) 941-3300 |
| Civil | Building Department Phone: (925) 779-7065 Fax: (925) 779-7034 |
| Zoning | Planning Department Phone: (925) 779-7035 Fax: (925) 779-7034 |
| Planning | Planning Department Phone: (925) 779-7035 Fax: (925) 779-7034 |
| City Attorney | Lynn Tracy Nerland City Attorney Phone: (925) 779-7015 Fax: (925) 779-7003 |
| Public Works | Ron Bernal Director of Public Works Phone: (925) 779-6950 Fax: (925) 779-6897 |
| Parks/Recreation | Ron Bernal Director Phone: (925) 779-6955 |
