San Mateo building inspections
VerifiedInspection sequence, scheduling, and re-inspection fees for building permits in San Mateo, California.
Verified 2026-09-20 · Source
How to schedule
Inspections are requested through the building department below.
- Address
- San Mateo City Hall, 330 West 20th Avenue, San Mateo, CA 94403
- Phone
- (650) 522-7172 (permit technicians and inspection cancellations)
- Office hours
- NOT PUBLISHED as counter hours on the pages read - the Building Permits, Building Inspections, Adopted Building Codes, Reach Codes and Express Building Permits pages. What IS published is when INSPECTIONS happen: "Inspections are performed during normal business hours, typically 8:00 AM - 5:00 PM." That is the inspectors' working day and this record does not convert it into opening times for the permit counter. The CSS portal is separately "available 24 hours, seven days a week".
- Website
- Official site
Published scheduling rules
- A SUBMITTED INSPECTION REQUEST IS NOT A BOOKED ONE, AND THE CITY SAYS SO IN TERMS: "Inspection requests are not confirmed until you get a confirmation email by our automated system", arriving around 5:00 PM the night before. Combined with the 3:00 PM next-day deadline and the refusal of same-day requests, the confirmation lands only two hours after the deadline that produced it - so a request made at 2:55 PM is unconfirmed for the rest of the afternoon and there is no same-day recovery if it fails. (General)
Inspection sequence
Applies to: Building Permit
- 1
No same-day requests, and a 3:00 PM deadline for tomorrow
"We do not accept same day inspection requests." And "There is a 3:00 PM deadline for scheduling next day inspections." Requests go through the Customer Self-Service portal, "available 24 hours, seven days a week."
- 2
A request is not a booking until the email arrives
"Inspection requests are not confirmed until you get a confirmation email by our automated system. Generally, the email confirmation will be sent the night before the scheduled inspection date around 5:00 PM." Until that email, nothing is scheduled.
- 3
Your inspector calls before 9:00 AM with a two-hour window
"Please expect to be contacted by your inspector before 9:00 AM on the morning of your inspection, at which point you will receive your 2-hour inspection window and confirmation of wither an in-person or virtual inspection." A daily report is published too: "The updated daily inspection 2-hour window report will be published at 9:00 AM." The word "wither" is the city's own typo for "whether".
- 4
Put the right phone number on the request
The city is specific about whose number to give: "It is important to input the field contact number during the scheduling. It is best not to use the call center or dispatch number, but the actual person who will be present at the inspection."
- 5
Virtual inspections exist but you cannot book one
"These inspections are available on an as-needed basis and are initiated by the building inspector assigned to the project... To request a virtual inspection, reach out to your project inspector." The route is the inspector, not the portal, and the decision is theirs.
- 6
AM or PM is a preference only
"AM/PM inspection request times are only noted as a preference and cannot be guaranteed."
- 7
Somebody qualified, with the plans and the card
"Contractors shall prepare for their inspections by having a qualified employee at the site with plans, a permit/job card ready for the inspector. If the site is not ready, or plans and a permit card are not present, contractors may be subject to re-inspection fees."
- 8
Cancelling, and the 24-hour line
"Inspection requests can be cancelled via the CSS Portal before receiving the confirmation email stating that your request has been scheduled. You can also call (650) 522-7172 to cancel." After that: "late cancellations of less than 24 hours prior or same day may be assessed a re-inspection fee."
Re-inspection fees
Re-inspection fees · Triggered two ways. If the site is not ready or the plans and permit card are absent, "contractors may be subject to re-inspection fees". Show full citationHide
Re-inspection fees · Triggered two ways. If the site is not ready or the plans and permit card are absent, "contractors may be subject to re-inspection fees". And "late cancellations of less than 24 hours prior or same day may be assessed a re-inspection fee". The schedule was not opened, so no amount is recorded.Sources & verification
Verified against official sources. Last reviewed 2026-09-20.
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Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the San Mateo building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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