Building Division

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Counter hours for the Building Division are Monday - Friday from 8:30 am to 12:00 pm, and by appointment from 1 p.m. to 4 p.m.  All inspections are performed in the afternoon.  Call (650) 259-2330 for further information, or to schedule an appointment or inspection.  

Building Codes

The City of Millbrae uses the following codes:

  • 2013 California Building Code
  • 2013 California Electrical Code
  • 2013 California Mechanical Code
  • 2013 California Plumbing Code
  • 2010 California Energy Code (2013 Energy Code becomes effective July 1, 2014)
  • 2013 California Fire Code

It should be noted that these model codes are amended by the State of California and the City of Millbrae to include various additional requirements. Standard code questions can be answered by building division staff, however, more complex design issues should be referred to a design professional such as an architect or engineer.

Permits & Reviews

The Building Division issues a number of different permits, such as building, plumbing, electrical, and mechanical. Permits from other departments, such as, public works, or fire, may also be required. A building permit is required anytime a building or structure, or any electrical, plumbing or mechanical system, is to be erected, constructed, enlarged, altered, repaired, moved, improved, removed, converted or demolished. There are some exceptions to this requirement. If you are planning a project, it's a good idea to contact Building Division Staff to see if a permit will be required. The phone number is 650-259-2330.

Plan Check Process

Building Division staff will examine your plans for compliance with adopted codes and regulations. At the same time, other relevant departments or divisions will be doing their own check of your plans. Each department or division will contact you directly regarding necessary conditions and comments. Once other departments or divisions code requirements are satisfied, they will approve their portion of your permit application. Necessary revisions are usually made directly to your plan, but sometimes changes will be attached to the permit as conditions of approval.

Typically, plans, specifications, energy calculations, soils reports and other data are required whenever new construction work is proposed. The documentation is routed for review by all pertinent City departments to ensure compliance with applicable codes and regulations before building permits are issued. Permit applicants should allow a minimum of 2 to 4 weeks for initial plan check activities to be performed depending on the complexity of their project. In order to provide fast and efficient plan check services, we utilize in-house plan check personnel as well as consultant plan review agencies.

Over-the-counter plan checks are routinely provided for basic repair and replacement work such as termite repair, re-roofing, residential seismic strengthening, mechanical equipment, change- outs, some sign installations, minor demolition work, etc. Over-the-counter plan checks are typically not provided for new construction work or for projects involving building additions, alterations and remodels. For further information, contact the Building Division at 650-259-2330.


Inspections are required for all permitted work in the City of Millbrae. The purpose of inspections are to ensure that the work meets the construction and installation requirements of applicable codes. These inspections are required for all work that is performed. Inspection requests should be made at least one day in advance. Inspection requests can be made by calling 650-259-2330, Monday - Friday from 8:30 a.m. to 12:00 noon.

Normal inspections are performed Monday through Friday from 1:00 p.m. to 4:30 p.m. It is your responsibility to arrange for inspections, and the proper inspection must take place before you can proceed to the next phase of the work. For additional information, contact the Building Division at 650-259-2330.

Building Inspection FAQ

Certificate of Occupancy

After the final inspection and verification that all work under a permit is complete for new construction or additions and that all departmental conditions have been met, the Building Division will issue a Certificate of Occupancy, signifying that you have met all requirements and that your project is safe and legal for occupancy and use.


The Building Division collects fees to cover the costs of providing services. Typical fees may include, plan check, building, fire, sewer connection and documentation. Fees not collected by the Building Division include, school fees (both elementary and high school), encroachments, new water service and new sewer service. For specific fee questions, call the Building Division at 650-259-2330.

Hours of Construction

  • Monday - Friday; 7:30 a.m. to 7:00 p.m.
  • Saturday; 8:00 a.m. to 6:00 p.m.
  • Sunday and Holidays; 9:00 a.m. to 6:00 p.m.

Exceptions to these hours must be approved by the Building Official

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