Windsor Municipal Code Art. 4 2025 California Residential Code—Title 24, Part 2.5

This article shall be known as the "California Residential Code," and may be cited as such. For purposes of citation, the California Residential Code, Part 2.5, 2025 Edition, including tables and appendices thereto; amended by the State of California and adopted by reference and amended by the Town of Windsor, are renumbered by adding "7-2-400" et seq. before each section.

(Ord. No. 2025-402, §§ 3, 7, 12-3-2025)

Section R202 of the California Residential Code is amended to add the following:

[BG] SUBSTANTIAL IMPROVEMENT. Any repair, reconstruction, rehabilitation, alteration, addition or other improvement of a building or structure that meet any of the following:

1. An existing building or structure not classified as Group R-3 occupancy, which undergoes any addition of floor area that is equal to or exceeds 10 percent of the existing gross floor area.

2. An existing Group R-3 building or structure, which undergoes any addition of floor area that is equal to or exceeds 50 percent of the existing gross floor area.

3. An existing building or structure, which undergoes any alteration of floor area that is equal to or exceeds 50 percent of the existing gross floor area.

4. A building or structure, which undergoes any combination of repair, reconstruction, rehabilitation, alteration, addition or other improvement that is equal to or exceeds 50 percent of the existing gross floor area.

5. If in the determination of the building official the structure has sustained substantial damage, any repairs are considered substantial improvement regardless of the actual repair work performed.

6. The cost of which equals to or exceeds 50 percent of the market value of the structure before the improvement or repair is started.

6.1

Any project for improvement of a building required to correct existing health, sanitary or safety code violations identified by the building official and that are the minimum necessary to assure safe living conditions.

6.2

Any alteration of a historic structure provided that the alteration will not preclude the structure's continued designation as a historic structure.

WILDLAND-URBAN INTERFACE FIRE AREA (WUI). [SFM] (See California Wildland-Urban Interface Code for this definition.

(Ord. No. 2025-402, §§ 3, 7, 12-3-2025)

Section R337 of the California Residential Code is amended to read as follows:

All residential construction shall meet the requirements of the California Wildlands-Urban Interface Code and the California Building Code. Windsor is defined as a Moderate Fire Severity Zone except where a more restrictive designation is provided by the Fire Severity Zone Maps provided by the Office of the State Fire Marshal.

(Ord. No. 2025-402, §§ 3, 7, 12-3-2025)

Section R902.2 of the California Residential Code has been deleted.

(Ord. No. 2025-402, §§ 3, 7, 12-3-2025)