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September 2026 Building Permits

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

Ann Arbor, MI issued 1,056 building permits in September 2026, down 33% from the prior month. The most active zip code was 48104 with 451 permits. Mechanical (Residential) - General HVAC was the top permit type, making up 13% of all permits issued.

Permits issued
1,056
vs. prior month
-33%
1,585 last month
Most active zip
48104
451 permits
Top permit type
Mechanical (Residential) - General HVAC
13% of total

Permit activity by zip code

Top 10 zip codes by permit volume — September 2026

48104
451
48103
298
48105
201
48108
106

Permits by type

September 2026 · Ann Arbor, MI

Mechanical (Residential) - General HVAC
136 (13%)
Electrical (Residential) - General
134 (13%)
Electrical (Commercial) - General
124 (12%)
Plumbing (Residential) - General
91 (9%)
Mechanical (Commercial) - General HVAC
88 (8%)
Plumbing (Residential) - Water/Sewer/Storm
60 (6%)
Building (Residential) - Windows & Doors
46 (4%)
Electrical (Residential) - Reconnect
44 (4%)
Certificate of Occupancy
42 (4%)
Electrical (Commercial) - Reconnect
39 (4%)
Plumbing (Commercial) - General
26 (2%)
Building (Residential) - Alteration/Repair
21 (2%)
Building (Residential) - Radon
19 (2%)
Zoning Compliance - Fence (7 ft or less)
14 (1%)
Electrical (Residential) - Solar Panel - Roof Mounted [Expedited]
12 (1%)
Building (Residential) - Deck / Porches
11 (1%)
Electrical (Residential) - Generator
9 (1%)
Mechanical (Residential) - Generator
9 (1%)
Building (Commercial) - Alteration/Repair
8 (1%)
Sign Permit - Wall
8 (1%)
Electrical (Commercial) - Sign
7 (1%)
Grading/Soil Erosion - Residential
7 (1%)
Building (Residential) - Foundation Repair/Alteration
6 (1%)
MESA - Fire Suppression
6 (1%)
Building (Residential) - Addition
5 (0%)
Electrical (Residential) - Homeowner Permit
5 (0%)
Building (Commercial) - Roof
4 (0%)
Building (Commercial) - Solar - Ground/Roof
4 (0%)
Certificate of Occupancy - Re-Occupation
4 (0%)
Electrical (Commercial) - Teledata/Low Voltage
4 (0%)
Mechanical (Residential) - Boiler (1 or 2 unit structures only)
4 (0%)
Mechanical (Residential) - Fireplace
4 (0%)
MESA - Fire Alarm Permit
4 (0%)
Building (Commercial) - Windows & Doors
3 (0%)
Building (Residential) - Basement Egress Window
3 (0%)
Grading/Soil Erosion - Commercial
3 (0%)
Mechanical (Commercial) - Boiler 200,000 BTU and Greater OR 6 or more unit structure
3 (0%)
Mechanical (Residential) - Fuel Gas Piping
3 (0%)
Plumbing (Commercial) - Water/Sewer/Storm
3 (0%)
Building (Residential) - Roof (Flat Roof Only)
2 (0%)
Civil Construction Permit
2 (0%)
Electrical (Commercial) - Generator
2 (0%)
Mechanical (Residential) - Homeowner Permit
2 (0%)
MESA - Gas Detection Systems
2 (0%)
Zoning Compliance - Shed (200 sq ft or less)
2 (0%)
Building (Commercial) - Deck / Porch
1 (0%)
Building (Commercial) - Tenant Finish
1 (0%)
Building (Residential) - Detached Structures (over 200 sf or over 1 story)
1 (0%)
Building (Residential) - New Construction
1 (0%)
Building (Residential) - Pool/Hot Tub/Spa
1 (0%)
Certificate of Occupancy - Final With No Site Compliance Plan
1 (0%)
Demolition - Commercial Interior
1 (0%)
Electrical (Commercial) - Solar - Ground/Roof
1 (0%)
Electrical (Residential) - EV Charging Station
1 (0%)
Electrical (Residential) - Teledata/Low Voltage
1 (0%)
Mechanical (Commercial) - Generator
1 (0%)
Mechanical (Commercial) - Hydronic/Piping
1 (0%)
Mechanical (Residential) - Hydronic/Piping
1 (0%)
Mechanical (Residential) - New Air Conditioner Installation
1 (0%)
Mechanical (Residential) - Wood Burning Appliances and Venting
1 (0%)
Portable Sign - In Front of Applicants Site
1 (0%)
Sign Permit - Face Change
1 (0%)
Sign Permit - Projecting
1 (0%)
Zoning - Carport [Detached] (200 sq ft or less)
1 (0%)
Zoning Compliance - Change of Use
1 (0%)
Zoning Compliance - Mobile Food Service
1 (0%)

Other months — Ann Arbor

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