← All reportsWalnut Creek, CA · Monthly Report

October 2026 Building Permits

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

Walnut Creek, CA issued 492 building permits in October 2026, down 9% from the prior month. The most active zip code was 94598 with 155 permits. Building New Construction, Additions, Alterations or Sign was the top permit type, making up 29% of all permits issued.

Permits issued
492
vs. prior month
-9%
540 last month
Most active zip
94598
155 permits
Top permit type
Building New Construction, Additions, Alterations or Sign
29% of total

Permit activity by zip code

Top 10 zip codes by permit volume — October 2026

94598
155
94595
148
94596
117
94597
71

Permits by type

October 2026 · Walnut Creek, CA

Building New Construction, Additions, Alterations or Sign
144 (29%)
Parking Fees
53 (11%)
Mechanical, Electrical, or Plumbing Only
51 (10%)
Residential Mechanical: HVAC, Furnace, Air Conditioner Replacement or Ductwork ONLY (no relocation)
47 (10%)
Building Revision to Issued Permit
46 (9%)
Residential Electrical: Electrical Panel or Sub-Panel Replacement or Upgrade Panel ONLY (not exceeding 200amps & no relocation)
30 (6%)
Reroof - Residential without Overlay
26 (5%)
Residential Plumbing: Water Heater Replacement ONLY (no relocation, no tankless)
24 (5%)
Solar System - Residential using Solar App+
21 (4%)
Solar System - Residential
16 (3%)
EV Charger/Battery Storage System - Residential
10 (2%)
Reroof - Multifamily Residential, Commercial or Residential with Overlay
8 (2%)
After Hours
4 (1%)
Estimate - Building
3 (1%)
Pool or Spa - New, Remodel or Demolition
3 (1%)
Building Demolition Full
2 (0%)
Building Research
1 (0%)
Estimate - Mechanical, Electrical, or Plumbing Only
1 (0%)
Estimate - Pool or Spa
1 (0%)
Solar System - Commercial
1 (0%)

Other months — Walnut Creek

November 2026September 2026August 2026
View all counties →

Get alerted when new permits are filed in Walnut Creek

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

Start free