Walnut Municipal Code Ch. 2.20 County Residential Code

A. There is adopted by reference, except hereinafter provided, that certain Residential Code known and designated as the Los Angeles County Residential Code as contained in the 2026 Edition of the Los Angeles County Residential Code effective January 1, 2026 (Ordinance 25-5683) published by the California Building Standards Commission and such code shall be and become the Residential Code of the City, regulating the erection, construction, enlargement, alteration, repair, moving, removal, demolition, conversion, occupancy, use, height, area and maintenance of all structures and certain equipment therein for one and two-family dwellings under three stories, prescribing conditions under which such work may be carried on within the City and providing for issuance of permits and the collection of fees therefor.

B. One copy of such Los Angeles County Residential Code has been deposited in the office of the Building Official and shall be at all times maintained by such official for use and examination by the public.

C. In the event language is not present or conflicts with other portions of the Residential Code, the California Building Code shall govern. In the event of any conflict or ambiguity between any provisions contained in the Building Code and any provisions of the Walnut Municipal Code, the Walnut Municipal Code shall control.

(Ord. 19-11, § 23; Ord. 22-10, § 23; Ord. 25-07, 12/10/2025)

A. Sec. R202 of the California Residential Code, is hereby amended to read:

Section R202 amended — Definitions.

Section R202. Definitions. Notwithstanding other definitions in this section, the following names or terms shall be added as amended definitions for this section where not indicated or each such name or term provided and defined in this section shall be deemed and construed to have the meaning ascribed to it in this section.

"Board of Appeals"

shall mean the City Manager of the City of Walnut or other hearing officer as outlined in Chapter 3.36 of the Walnut Municipal Code.

"Board of Supervisors"

shall mean the City Council of the City of Walnut.

"Building Official"

shall mean the Building Official of the City of Walnut.

"County" or "County of Los Angeles"

shall mean the City of Walnut.

"Jurisdiction"

shall mean the City of Walnut except in Chapter 1 Division 1.

B. Section 331 of the California Residential Code, is hereby added to read:

Section R331. Structural Tests and Inspections. Structural test and inspection requirements which are omitted from the California Residential Code are intended to refer to the California Building Code.

When structural tests and special inspections are required due to the methods of construction, the tests and inspections shall be performed and documented as required in Chapter 17 of the California Building Code.

C. Section R332 of the California Residential Code, is hereby added to read:

Section R332. Pool Barrier Requirements. Pool barrier criteria are not explicitly located within the California Residential Code and are intended to refer to the California Building Code.

Where any body of water with a depth over 18" occurs, refer to California Building Code Section 3109 for pool barrier requirements.

D. Section R333 of the California Residential Code, is hereby added to read:

Section R333. Sound Transmission Control. The California Residential Code does not provide criteria for sound transmission between dwelling units or outside noise which are intended to refer to the California Building Code.

Refer to Section 1207 of the California Building Code for criteria where sound transmission control applies.

(Ord. 19-11, §§ 24—27; Ord. 22-10, §§ 24—27; Ord. 25-07, 12/10/2025)