← All reportsWalnut Creek, CA · Monthly Report

September 2026 Building Permits

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

Walnut Creek, CA issued 540 building permits in September 2026, up 3% from the prior month. The most active zip code was 94595 with 170 permits. Building New Construction, Additions, Alterations or Sign was the top permit type, making up 30% of all permits issued.

Permits issued
540
vs. prior month
+3%
525 last month
Most active zip
94595
170 permits
Top permit type
Building New Construction, Additions, Alterations or Sign
30% of total

Permit activity by zip code

Top 10 zip codes by permit volume — September 2026

94595
170
94598
170
94596
127
94597
71

Permits by type

September 2026 · Walnut Creek, CA

Building New Construction, Additions, Alterations or Sign
161 (30%)
Mechanical, Electrical, or Plumbing Only
62 (11%)
Parking Fees
59 (11%)
Residential Plumbing: Water Heater Replacement ONLY (no relocation, no tankless)
52 (10%)
Reroof - Residential without Overlay
47 (9%)
Building Revision to Issued Permit
44 (8%)
Residential Mechanical: HVAC, Furnace, Air Conditioner Replacement or Ductwork ONLY (no relocation)
44 (8%)
Residential Electrical: Electrical Panel or Sub-Panel Replacement or Upgrade Panel ONLY (not exceeding 200amps & no relocation)
23 (4%)
EV Charger/Battery Storage System - Residential
11 (2%)
Solar System - Residential
10 (2%)
Estimate - Building
8 (1%)
Solar System - Residential using Solar App+
4 (1%)
Reroof - Multifamily Residential, Commercial or Residential with Overlay
3 (1%)
Administrative Documentation
2 (0%)
Building Research
2 (0%)
Estimate - Reroof
2 (0%)
After Hours
1 (0%)
Building Demolition Full
1 (0%)
Estimate - Mechanical, Electrical, or Plumbing Only
1 (0%)
Estimate - Solar
1 (0%)
Pool or Spa - New, Remodel or Demolition
1 (0%)
Solar System - Commercial
1 (0%)

Other months — Walnut Creek

November 2026October 2026August 2026
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