← All reportsBoulder, CO · Monthly Report

September 2026 Building Permits

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

Boulder, CO issued 601 building permits in September 2026, down 28% from the prior month. The most active zip code was 80304 with 174 permits. Electrical Permit — Electrical Permit was the top permit type, making up 21% of all permits issued.

Permits issued
601
vs. prior month
-28%
830 last month
Most active zip
80304
174 permits
Top permit type
Electrical Permit — Electrical Permit
21% of total

Permit activity by zip code

Top 10 zip codes by permit volume — September 2026

80304
174
80302
150
80305
111
80303
73
80301
65
80309
1
80503
1

Permits by type

September 2026 · Boulder, CO

Electrical Permit — Electrical Permit
128 (21%)
Mechanical Permit — Mechanical with Electrical
92 (15%)
Mechanical Permit — Mechanical HVAC/Solar
68 (11%)
Roofing Replacement Permit — Roofing Replacement Permit
53 (9%)
Right-of-Way Permit — Right-of-Way Permit with Utilities
45 (7%)
Fire Permit — Fire Permit
42 (7%)
Building Permit - Single Family Detached Dwelling — Alteration
27 (4%)
Utility Permit — Utility Permit
27 (4%)
Wireless Facility Permit — Wireless Facility Permit
16 (3%)
Right-of-Way Permit — Right-of-Way Permit
11 (2%)
Building Permit - Non-Residential — Alteration
10 (2%)
Building Permit - Single Family Detached Dwelling — Addition and Alteration
8 (1%)
Roofing Replacement Permit — Roofing ? Existing Solar Panels
8 (1%)
Mechanical Permit — Water Heat - Single Family Residential
7 (1%)
Building Permit - Single Family Detached Dwelling — Repair
6 (1%)
Building Permit - Multifamily — Alteration
5 (1%)
Siding Replacement Permit — Siding Replacement Permit
5 (1%)
Sign Permit — Sign Permit
5 (1%)
Fence and Wall Permit — Fence and Wall Permit
4 (1%)
Utility Permit — Utility Sub-Permit
4 (1%)
Building Permit - Accessory — NRE- Unenclosed Structure
3 (0%)
Demolition Permit — Full Structure Deconstruction
3 (0%)
Building Permit - Non-Residential — Tenant Finish
2 (0%)
Building Permit - Single Family Attached Dwelling — Repair
2 (0%)
Demolition Permit — Interior Non-Structural Deconstruction
2 (0%)
Plumbing Permit — Plumbing Permit
2 (0%)
Temporary Event Permit — Temporary Event Permit
2 (0%)
Wetland Permit — Public Process
2 (0%)
Building Permit - Accessory — RES- Enclosed Structure with Heating or Cooling
1 (0%)
Building Permit - Accessory — RES- Enclosed Structure without Heating or Cooling
1 (0%)
Building Permit - Accessory — RES- Pool or Spa
1 (0%)
Building Permit - Mixed Use — Alteration
1 (0%)
Building Permit - Mixed Use — Repair
1 (0%)
Building Permit - Multifamily — New
1 (0%)
Building Permit - Non-Residential — Addition and Alteration
1 (0%)
Building Permit - Single Family Attached Dwelling — Alteration
1 (0%)
Building Permit - Single Family Detached Dwelling — New
1 (0%)
Electrical Permit — Temporary Construction Power
1 (0%)
Erosion Control Permit — Erosion Control Permit
1 (0%)
Wetland Permit — Non-Public Process
1 (0%)

Other months — Boulder

August 2026July 2026June 2026May 2026
View all counties →

Get alerted when new permits are filed in Boulder

Pick your zip codes and permit types. We'll email you every Monday, Wednesday, and Friday.

Start free