The City of Clayton contracts directly with Contra Costa County’s Building Division for all building permit and inspection services. The Contra Costa County Building Division performs all plan checks, issues all permits, and provides the inspections for work pertaining to the California Building, Electrical, Mechanical, Plumbing, and Green Building Standards Codes. This structure creates a distinct process for those seeking building permits within the City of Clayton.
The Community Development Department encourages those with a possible building project to contact the City of Clayton’s Community Development Department during the preliminary stages for applicable zoning requirements to facilitate an efficient and timely permit process.
Do I need a building permit?
Most building, demolition, and home improvement projects require a building permit. These projects include, but are not limited to, the following: pools, spas, accessory buildings or structures, additions and alterations, decks, gazebos, arbors, kitchen and bath remodels, patios, exterior doors and windows, electrical, re-roofs, new residential and commercial buildings, signs, tenant improvements, and replacement of water heaters, furnaces, air conditioners.
Building Permit Submittal
All building permit applications must have the required information such as construction plans, structural engineering, energy design calculations, soils reports showing compliance with applicable codes and design standards.
If a project does not qualify for submittal through the ePermit system, then follow the steps below:
If a project proposes changes or requires a connection to the sanitary sewer system or consists of any new exterior structures or additions:
California Assembly Bill 3002 went into effect on January 1, 2019, requiring cities and counties to provide additional information regarding disability access requirements and related resources to all property and business owners applying for commercial building permits. To read the full notice in English click here. Pursuant to California law, this informational notice is also available in Spanish, Chinese, Tagalog, Vietnamese and Korean.