In San Mateo, California, as with any construction-related documentation, as-built drawings must comply with the California Building Standards Code (CBC).

San Mateo city ordinances also apply, especially for energy efficiency, fire safety, and seismic retrofitting regulations.

The city requires that as-builts are accurate for planning future modifications and legal inspections.

As-builts are typically submitted with applications for building permits in San Mateo.

These must be updated during the project to reflect any on-site changes and are often needed for final inspections before the project is signed off by the city.

Detailed and updated as-built drawings help in obtaining final occupancy certificates.

The City of San Mateo requires that all as-built drawings be accurate and up-to-date, reflecting any modifications from the original design. These documents will be reviewed as part of the building permit process to ensure compliance with structural, safety, and zoning requirements. Any changes made during construction must be documented in these plans, and they should include detailed measurements and specifications.

As-built drawings reflect the completed construction project and accurately represent the final dimensions, layouts, and specifications. As-built drawings are often submitted as part of the initial approval process (to identify proposed buildouts vs. existing conditions) and as part of the final inspection or closeout process. As-built drawings should typically include the following:

• Site Plan: Indicating the building's position on the property, along with key site features.
• Floor Plans: Detailed floor plans for each level, highlighting walls, doors, windows, stairways, and other architectural elements.
• Roof Plan: Illustrating the roof design with all slopes and ridges, along with the placement of mechanical equipment like HVAC units.
• Sections and Elevations: Vertical cross-sections and elevation diagrams of the building.
• Utilities and Infrastructure: Records of plumbing, electrical, and mechanical systems, detailing any modifications made throughout the construction process.

As-built drawings must be prepared subject to Professional Standards to scale (commonly 1/8" or 1/4" = 1').

For the most accurate and specific requirements, it is advisable to consult Prime Edge As-Built Services so that we may provide detailed guidance based on the type of project and any recent changes in regulations.

Prime Edge provides as-built drawings as accurate and up-to-date field-verified plans to ensure compliance with local San Mateo, California requirements.

For detailed guidance and forms, you can visit San Mateo's Online Permit Center:

When are building plans required?
Plans, Permits and Inspections Go Online