← 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 111 building permits in September 2026, down 21% from the prior month. The most active zip code was 92630 with 75 permits. Residential Mechanical - Alteration was the top permit type, making up 31% of all permits issued.

Permits issued
111
vs. prior month
-21%
140 last month
Most active zip
92630
75 permits
Top permit type
Residential Mechanical - Alteration
31% of total

Permit activity by zip code

Top 10 zip codes by permit volume — September 2026

92630
75
92610
15
92679
7

Permits by type

September 2026 · Lake Forest, CA

Residential Mechanical - Alteration
34 (31%)
Residential Electrical - Remodel
16 (14%)
Residential Building - Remodel
12 (11%)
Residential Building - Windows
8 (7%)
Residential Electrical - Alteration
8 (7%)
Residential Building - Addition
5 (5%)
Address Assignment - Single Address - Assignment
3 (3%)
Banner - Temporary Commercial Banner
3 (3%)
Residential Building - Patio Cover (0ver 200 sq. ft.)
3 (3%)
Accessory Dwelling Unit - <NONE>
2 (2%)
Commercial Building - Tenant Improvement
2 (2%)
Non-Commercial Banner - <NONE>
2 (2%)
Residential Building - ADU
2 (2%)
Residential Building - Repair
2 (2%)
Address Assignment - Multiple Address - Assignment
1 (1%)
Commercial Building - Reroof
1 (1%)
Commercial Mechanical - Alteration
1 (1%)
Expand the Forest
1 (1%)
Residential Building - Balcony
1 (1%)
Residential Building - Demolition
1 (1%)
Residential Electrical - New
1 (1%)
Residential Solar Permit (old version)
1 (1%)
Temporary Outdoor Promotion - <NONE>
1 (1%)

Other months — Lake Forest

August 2026July 2026June 2026May 2026
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