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November 2026 Building Permits

Official permit data from San Mateo County — updated Mon, Wed & Fri from the county permitting office.

San Mateo County, CA issued 129 building permits in November 2026, down 59% from the prior month. The most active zip code was 94025 with 21 permits. Re-Roof was the top permit type, making up 14% of all permits issued.

Permits issued
129
vs. prior month
-59%
312 last month
Most active zip
94025
21 permits
Top permit type
Re-Roof
14% of total

Permit activity by zip code

Top 10 zip codes by permit volume — November 2026

94025
21
94062
20
94402
15
94061
13
94018
11
94019
9
94063
8
94037
7
94038
7
94028
6

Permits by type

November 2026 · San Mateo County, CA

Re-Roof
18 (14%)
Building Permit Revision
14 (11%)
Auto Issue Permit
13 (10%)
Residential Addition / Alteration to Existing Residence
11 (9%)
Electrical Service Upgrade
9 (7%)
Plumbing
9 (7%)
HVAC, Furnace, Air Conditioning, and Heat Pump
8 (6%)
Water Heater
8 (6%)
Information Notice
7 (5%)
Fire Systems
6 (5%)
Electric Vehicle Charger
5 (4%)
Window or Door
5 (4%)
Kitchen / Bath Remodel
3 (2%)
Commercial Addition / Alteration / Tenant Improvement / Change of Occupancy or Use
2 (2%)
Residential New Single Family / Multi Family / Manufactured / Detached ADU
2 (2%)
Temporary Power Pole
2 (2%)
Deck / Patio / Porch
1 (1%)
Electric Generator
1 (1%)
Landscaping / Retaining Wall
1 (1%)
PV Solar
1 (1%)
Siding and Stucco
1 (1%)
Signs and Awnings Permit
1 (1%)
Stop Work Notice
1 (1%)

Other months — San Mateo County

October 2026September 2026August 2026
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