← All reportsLake Forest, CA · Monthly Report

September 2026 Building Permits

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

Lake Forest, CA issued 154 building permits in September 2026, up 10% from the prior month. The most active zip code was 92630 with 101 permits. Residential Mechanical - Alteration was the top permit type, making up 29% of all permits issued.

Permits issued
154
vs. prior month
+10%
140 last month
Most active zip
92630
101 permits
Top permit type
Residential Mechanical - Alteration
29% of total

Permit activity by zip code

Top 10 zip codes by permit volume — September 2026

92630
101
92610
21
92679
8

Permits by type

September 2026 · Lake Forest, CA

Residential Mechanical - Alteration
45 (29%)
Residential Electrical - Remodel
25 (16%)
Residential Building - Remodel
18 (12%)
Residential Building - Windows
10 (6%)
Residential Electrical - Alteration
9 (6%)
Residential Building - Addition
8 (5%)
Address Assignment - Single Address - Assignment
4 (3%)
Commercial Building - Tenant Improvement
4 (3%)
Banner - Temporary Commercial Banner
3 (2%)
Residential Building - Patio Cover (0ver 200 sq. ft.)
3 (2%)
Residential Building - Repair
3 (2%)
Residential Solar Permit (old version)
3 (2%)
Accessory Dwelling Unit - <NONE>
2 (1%)
Non-Commercial Banner - <NONE>
2 (1%)
Residential Building - ADU
2 (1%)
Residential Building - Demolition
2 (1%)
Residential Electrical - New
2 (1%)
Address Assignment - Multiple Address - Assignment
1 (1%)
Commercial Building - Demolition
1 (1%)
Commercial Building - Reroof
1 (1%)
Commercial Building - Special Investigation
1 (1%)
Commercial Mechanical - Alteration
1 (1%)
Commercial Vending Vehicles - New
1 (1%)
Expand the Forest
1 (1%)
Residential Building - Balcony
1 (1%)
Temporary Outdoor Promotion - <NONE>
1 (1%)

Other months — Lake Forest

November 2026October 2026August 2026July 2026
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