Note: Ord. 1848, was repealed by Ord. CC 2025-12, 11/3/2025.
Except as provided in this chapter, those certain building codes known and designated as the California Residential Code (CRC), 2025 Edition, including all appendices, shall become the residential code of the city for regulating the erection, construction, enlargement, alteration, repair, moving, removal, demolition, conversion, equipment, use, height, area and maintenance of all residential structures within the scope of the CRC in the city of La Habra.
(Ord. CC 2025-12, 11/3/2025)
The 2025 California Residential Code (CRC) is hereby amended as follows:
CRC Division II, Administration, Sections 101 through 114 is deleted in their entirety. Refer to this code Section 15.04.020, Administrative Provisions, for the administration of the CRC.
CRC Table R301.2 is revised to read as follows:
Table R301.2
CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA
Ground Snow Loado
Wind Design
Seismic Design Categoryf
Subject to Damage From
Winter Design Tempe
Ice Barrier Under-layment Requiredh
Flood Hazardsg
Air Freezing Indexi
Mean Annual Tempj
Speed (mph)d
Topographic Effectsk
Special Wind Regionl
Wind-borne Debris Zonem
Weatheringa
Frost Line Depthb
Termitec
Zero
110
Yes
No
No
D2 or E
Negligible
12″
Very Heavy
43
No
Yes
0
60°F
MANUAL J DESIGN CRITERIA n
Elevation
Latitude
Winter Heating
Summer Cooling
Altitude Correction Factor
Indoor Design Temperature
Design Temperature Cooling
Heating Temperature Difference
305
34
37
91
 
70
75
 
Cooling Temperature Difference
Wind Velocity Heating
Wind Velocity Cooling
Coincident Wet Bulb
Daily Range
Winter Humidity
Summer Humidity
 
7
 
 
69
27
 
7 (50% RH)
 
Notes:
For SI: 1 pound per square foot = 0.0479 kPa, 1 mile per hour = 0.447 m/s.
a.
Weathering may require a higher strength concrete or grade of masonry than necessary to satisfy the structural requirements of this code. The weathering column shall be filled in with the weathering index (i.e., "negligible," "moderate" or "severe") for concrete as determined from the Weathering Probability Map [Figure R301.2(1)]. The grade of masonry units shall be determined from ASTM C 34, C 55, C 62, C 73, C 90, C 129, C 145, C 216 or C 652.
b.
The frost line depth may require deeper footings than indicated in Table R403.3(1). The jurisdiction shall fill in the frost line depth column with the minimum depth of footing below finish grade.
c.
The jurisdiction shall fill in this part of the table to indicate the need for protection depending on whether there has been a history of local subterranean termite damage.
d.
The jurisdiction shall fill in this part of the table with the wind speed from the basic wind speed map [Figure R301.2(2)].Wind exposure category shall be determined on a site-specific basis in accordance with Section R301.2.1.4.
e.
The outdoor design dry-bulb temperature shall be selected from the columns of 97 1/2-percent values for winter from Appendix D of the California Plumbing Code. Deviations from the Appendix D temperatures shall be permitted to reflect local climates or local weather experience as determined by the building official.
f.
The jurisdiction shall fill in this part of the table with the seismic design category determined from Section R301.2.2.1.
g.
The City of La Habra does not have any Flood Hazards Zones. (OR, if yes) See city's FIRM maps for Flood Hazard Locations.
h.
In accordance with Sections R905.2.7.1, R905.4.3.1, R905.5.3.1, R905.6.3.1, R905.7.3.1 and R905.8.3.1, where there has been a history of local damage from the effects of ice damming, the jurisdiction shall fill in this part of the table with "YES." Otherwise, the jurisdiction shall fill in this part of the table with "NO."
i.
The jurisdiction shall fill in this part of the table with the 100-year return period air freezing index (BF-days) from Figure R403.3(2) or from the 100-year (99%) value on the National Climatic Data Center data table "Air Freezing Index-USA Method (Base 32°)" at www.ncdc.noaa.gov/fpsf.html.
j.
The jurisdiction shall fill in this part of the table with the mean annual temperature from the National Climatic Data Center data table "Air Freezing Index-USA Method (Base 32°F)" at www.ncdc.noaa.gov/fpsf.html.
k.
In accordance with Section R301.2.1.5, where there is local historical data documenting structural damage to buildings due to topographic wind speed-up effects, the jurisdiction shall fill in this part of the table with "YES." Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
l.
In accordance with Figure R301.2(2), where there is local historical data documenting unusual wind conditions, the jurisdiction shall fill in this part of the table with "YES" and identify any specific requirements. Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
m.
In accordance with Section R301.2.1.2, the jurisdiction shall indicate the wind-borne debris wind zone(s). Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
n.
The jurisdiction shall fill in these sections of the table to establish the design criteria using Table 1a or 1b from ACCA Manual J or established criteria determined by the jurisdiction.
o.
The jurisdiction shall fill in this section of the table using the Ground Snow Loads in Figure R301.2(3) and R301.2(4).
CRC Section R902.1 is amended by revising it to allow only class A or B roofs as follows:
R902.1 Roof assemblies. Roofs shall be covered with materials as set forth in Sections R904 and R905. A minimum Class A or B roofing shall be installed in areas designated by this section. Classes A or B roofing required by this section to be listed shall be tested in accordance with UL 790 or ASTM E 108.
Exceptions:
1.
Class A roof assemblies include those with coverings of brick, masonry and exposed concrete roof deck.
2.
Class A roof assemblies also include ferrous or copper shingles or sheets, metal sheets and shingles, clay or concrete roof tile, or slate installed on noncombustible decks.
CRC Section R902.1.2 is amended by revising it to require a minimum Class B roof as follows:
R902.1.2 Roof coverings within all other areas. The entire roof covering of every existing structure where more than 50 percent of the total roof area is replaced within any one-year period, the entire roof covering of every new structure, and any roof covering applied in the alteration, repair or replacement of the roof of every existing structure, shall be a fire-retardant roof covering that is at least Class B fire classification.
CRC Section R902.2, first paragraph is amended by revising it to allow only Class A or B treated wood roofs as follows:
R902.2 Fire-retardant-treated shingles and shakes. Fire-retardant-treated wood shakes and shingles are wood shakes and shingles complying with UBC Standard 15-3 or 15-4 which are impregnated by the full-cell vacuum-pressure process with fire-retardant chemicals, and which have been qualified by UBC Standard 15-2, or ASTM E108 or UL 790 for use on Class A or B roofs.
CRC Appendix CI, amend Section 115922 as follows:
Except as provided in Section 115922, when a building permit is issued for the construction of a new swimming pool or spa or the remodeling of an existing swimming pool or spa at a private single-family home, the respective swimming pool or spa shall be equipped with item #1 below AND at least one additional following seven drowning prevention features:
CRC Appendix CI, amend Section 115922 #1 as follows:
1. 
An enclosure that meets the requirements of Section 115923 and isolates the swimming pool and spa from the private single-family home. Any walls of the residential structure or accessory structures used to complete the isolation enclosure must have door openings equipped with protection as required in Section 115922(a) #4 or 5. Any such door protection device provided for this purpose may not be used to comply with the second drowning prevention feature requirement.
(Ord. CC 2025-12, 11/3/2025)