Updated : 04/22/2024
Overview
Thousand Oaks adopted some parts of the 2013 California Building Standards Code: the 2013 editions of the California Building Code (Title 24, Part 2, Volumes 1 and 2), California Residential Code (Title 24, Part 2.5), California Electrical Code (Title 24, Part 3), California Mechanical Code (Title 24, Part 4), California Plumbing Code (Title 24 Part 5), and California Green Building Standards (Title 24 Part 11). Thousand Oaks, Cal., Muni Code tit.8, chs. 1, 7, 10, 6, 8, and 16.
Helpful resources for Thousand Oaks, California include the following.
Residential Building Code
California adopted a statewide mandatory residential code that will control; however, local governments are free to make laws more strict (with some limitations).See PLRB,
California Building Codes for more information on state level codes.
Thousand Oaks adopted the 2012 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.
You can find a copy of the model code here.
You can find information about amendments to the model code
here.
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2022 California Residential Code (2021 IRC)(Thousand Oaks, CA TITLE 8. BUILDING REGULATIONS)
...CALIFORNIA RESIDENTIAL CODE 8-7.01 –Adoption of the California Residential Code 8-7.02 –Amendments: California Residential Code 8-7.03 –Reserved 8-7.04 –Amendments: Foundations 8-7.05 –Amendments: Concrete floors (on ground) 8-7.06 –Amendments: Roof assemblies 8-7.07 –Amendments: Masonry fireplaces 8-7.08 –Amendments: Patio Covers 8-7.09 –Amendments: Appendix AZ - Emergency Housing CHAPTER 8....
Drip Edge
Drip Edge: Yes
Ice Barrier
Comments
Thousand Oaks adopted the 2013 California Residential Code. Thousand Oaks, Cal., Muni Code § 8-7.01. The city did not adopt any Appendices or “Chapter 1, Division II – Administration” of the 2013 California Residential Code. Id.
Thousand Oaks amended the 2013 California Residential Code. Thousand Oaks, Cal., Muni Code tit.8, ch. 7 California Residential Code.
Thousand Oaks amended the Wood Roof Framing provisions in the 2013 California Residential Code:
The first sentence of Part III, Chapter 8, Section R802.8 “Lateral support” is amended to read as follows:
Roof framing members and ceiling joists having a depth-to-thickness ratio exceeding 2 to 1, based on nominal dimensions, shall be provided with lateral support at points of bearing to prevent rotation.
(§ 4, Ord. 1591-NS, eff. January 1, 2014)
Thousand Oaks, Cal., Muni Code § 8-7.06
Thousand Oaks amended the Roof Assemblies provisions in the 2013 California Residential Code:
Part III, Chapter 9, Section R901.1 “Scope” is amended by adding the following paragraph:
The roofing requirements of Chapter 15 of the 2013 California Building Code, as modified by Title 8, Sec. 8-1.14 and Sec. 8-1.15 of the Thousand Oaks Municipal Code, shall also govern the design materials, construction and quality of roof assemblies.
Section R902.1.2 “Roof coverings within state responsibility areas” is amended to read as follows:
R902.1.2 Roof Coverings within State Responsibility Areas. The entire roof covering of every existing structure where more than fifty (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 A.
Section R902.1.3 “Roof coverings in all other areas” is amended to read as follows:
R902.1.3 Roof Coverings in all Other Areas. The entire roof covering of every existing structure where more than fifty (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.
Section R902.2 “Fire retardant-treated shingles and shakes” is amended by adding the following paragraph:
Except as provided in Sections 902.1.1 through 902.1.3 and Title 8, Sec. 8-1.14 and Sec. 8-1.15, fire-retardant-treated wood shakes and shingles shall not be permitted.
(§ 4, Ord. 1591-NS, eff. January 1, 2014)
Thousand Oaks, Cal., Muni Code § 8-7.07
Commercial Building Code
Thousand Oaks adopted the 2012 IBC, statewide with limitations. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.
You can find a copy of the code
here.You can find information about amendments to the model code
here.
Auto Search - beta:
2019 California Bldg. Code, Part 2 (2018 IBC)(Thousand Oaks, CA Municipal Code)
...Adoption not found...
Comments
Thousand Oaks adopted the 2013 California Building Code, including Appendix J [Grading]. Thousand Oaks, Cal., Muni Code §§ 8-1.02 and 8-1.24.
The city amended the 2013 California Building Code, including the adopted Appendix J [Grading]. Thousand Oaks, Cal., Muni Code tit. 8, ch. 1 Building Code.
Thousand Oaks amended the Fire Classification of Roofs in the 2013 California Building Code as follows:
Section 1505.1 "General" is amended by removing the reference to Class C roof assemblies.
Section 1505.1.2 "Roof covering within state responsibility areas" is amended by deleting the Exception.
Section 1505.1.3 "Roof covering within all other areas" is amended by changing the reference from Class C to Class B.
Section 1505.1.5 "Additions to existing buildings" is added to read as follows:
1505.1.5 Additions to existing buildings. In other than very high fire hazard severity zones, not more than twenty-five (25%) percent of the roof covering of any building or structure may be added to with roofing material matching the existing roofing material and having at least a Class B assembly, in any twelve (12) month period, unless the new roof covering is made to conform to the requirements of this Code for new buildings or structures.
Table 1505.1 "Minimum Roof Covering classification for Types of Construction" is amended as follows:
For Type of Construction IIB, IIIB, and VB change the Minimum Roof Covering Classification from C to B.
Section 1505.6 "Fire-retardant treated wood shingles and shakes" is amended to read as follows:
No wooden shakes or shingles, treated or untreated, shall be used for roof covering except where permitted by Sec. 1505.1.3 or Sec. 1505.1.5.
(§ 2, Ord. 1591-NS, eff. January 1, 2014)
Thousand Oaks, Cal., Muni Code § 8-1.14
Thousand Oaks amended the Reroofing provisions in the 2013 California Building Code by adding a new Section 1510.7:
A new Section 1510.7 "Underlayment and Fire Classification" is added to read as follows:
1510.7 Underlayment and Fire Classifications.
All re-roofing shall conform to the applicable provisions of Chapter 15 of this Code. Roofing materials and methods of application shall comply with the California Building Code Standards, or shall follow manufacturer's installation requirements when approved by the Building Official. All existing roofing materials shall be removed entirely, except when the new roof covering is a roof assembly accepted and approved by I.C.C. Evaluation Service or approved by the Building Official, to provide a Class B or better
Roof Classification when installed over the existing fire retardant Class A or B roofing materials.
Additionally, where there is no solid sheathing, a minimum fifteen thirty-secondths (15/32") inch thick wood structural panel sheathing shall be installed in accordance with the requirements of Chapter 15 of this Code prior to any new roofing application, except when the roof covering is a roofing assembly accepted or approved by the I.C.C. Evaluation Service, to provide a diaphragm shear value equal to or better than fifteen thirty-secondths (15/32") inch thick wood structural panel sheathing.
All reroofing shall be fire retardant, unless otherwise approved by the Building Official.
In other than very high fire hazard severity zones, not more than fifty (50%) percent of the roof covering of any building or structure may be replaced with roofing material matching the existing roofing material and having at least a Class B assembly, in any twelve (12) month period.
(§ 2, Ord. 1591-NS, eff. January 1, 2014)
Thousand Oaks, Cal., Muni Code § 8-1.15.
Existing Buildings
Thousand Oaks amended Chapter 34 [Existing Buildings and Structures] with additional provisions for repair of existing structures. Thousand Oaks, Cal., Muni Code § 8-1.22.
