California code of regulations




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§ 1336.1. Listed Tiedown Assemblies.

Tiedown assemblies that are not part of an engineered tiedown system shall be listed as having been tested and found to be in compliance with the requirements of this section.

(a) A tiedown assembly consists of the ground anchor component and anchoring equipment. Anchoring equipment includes such components as

(1) a tie, which connects the ground anchor to the MH-unit ;

(2) a tensioning device, such as a turnbuckle or a yoke-type fastener; and

(3) fastening devices, such as an eye-bolt or a U-bolt-type cable clamp.

(b) A tiedown assembly shall be designed to prevent self-disconnection. Open hook ends shall not be used in any part of the tiedown assembly.

(c) Flat steel strapping used as a component of a tiedown assembly shall comply with the specifications and testing methods of ASTM Standard D3953-91, "Standard Specification for Strapping, Flat Steel and Seals," which is hereby incorporated by reference.

(d) A ground anchor component designed for the connection of multiple ties and the means for the attachment of the ties shall be capable of resisting, without failure, the combined working load of the maximum number of ties that can be attached to the anchor.

(e) A tiedown assembly shall be tested by applying an increasing test load to the point of failure in order to determine the assembly's capacity for resistance. A working load for the tiedown assembly shall be established from the test results, which shall be two-thirds (2/3) of the amount of resistance the tiedown assembly endured without failure.

(f) The tiedown assembly shall be tested while the ground anchor is installed as recommended by the manufacturer.

(1) The type of soil in which the ground anchor is installed for the application of a test load shall correspond to one of the classes of materials shown in California Building Residential Code, Table 18-1-A R 401.4.1. The working load of the listed tiedown assembly used in the calculations shall be for type 5 soil, also known as one thousand five-hundred (1,000)(1,500) pound soil, consisting of clay, sandy clay, silty clay and clayey silt, as classified in the California Building Residential Code, Table 18-1-R 401.4.1.

(2) The test load shall be applied from the direction of the tie.

(g) Failure of the ground anchor component consists of the following occurrences:

(1) The application of the test load results in an uplift of the ground anchor greater than two (2) inches or a side deflection of the ground anchor greater than three (3) inches; or

(2) The ground anchor, including the means of attachment of the tie, breaks, separates, or is deformed in a manner that threatens the integrity of the tiedown assembly. A deformity that threatens the integrity of the tiedown includes one that would allow the tie to separate from the ground anchor or that would cause the tie to wear and break.

(h) Failure of a component of the anchoring equipment consists of the following occurrences:

(1) The tie stretches to a length more than two (2) percent greater than the length of the tie prior to the application of the test load; or

(2) A component of the anchoring equipment or the attachment point to the MH-unit yields or fractures upon application of the test load; or

(3) A component of the anchoring equipment or the attachment point of the MH-unit is deformed by the working load in a manner that is a threat to the integrity of the tiedown assembly.

(i)The listing for the tiedown assembly shall include the following information:

(1) The model identification number of the tiedown assembly;

(2) The working load of the listed tiedown assembly used in the calculations, shall be calculated for type 5 soil, also known as one thousand five-hundred (1,000)(1,500) psf soil, consisting of clay, sandy clay, silty clay and clayey silt, as classified in the California Building Residential Code, Table 18-1-A R401.4.1 ; and

(3) Installation instructions for the tiedown assembly, including the manner in which the ground anchor component must be inserted into the ground in order to maintain the working load for which the tiedown assembly is rated. Such instructions include the angle at which the anchor must be inserted and the angle at which the tie must be attached.

(j) The ground anchor component of a listed tiedown assembly shall contain a permanent label that provides the manufacturer's name and the listed model identification number of the tiedown assembly. The label shall be located on the anchor in a place that it is visible after installation, and the information shall be provided on the label in a manner that is easy to read.
NOTE: Authority: Sections 18300, 18613, and 18613.4, Health and Safety Code. Reference: Section 18613.4, Health and Safety Code and Title 24 Code of Federal Regulations, Part 3285.
§ 1346. Skirting Design and Construction.

(a) Where the space beneath an MH-unit is enclosed, there shall be provided a removable access panel opening a minimum of eighteen (18) inches by twenty-four (24) inches unobstructed by pipes, ducts, or other equipment that may impede access. The access panel shall not be fastened by any means requiring the use of a special tool or device to remove the panel.

(b) Cross ventilation shall be provided by openings having a net area of not less than one and one-half (1½) square feet for each twenty-five (25) linear feet of the MH-unit and including all enclosed unventilated structures such as porches. The openings shall be provided on at least the two (2) opposite sides along the greatest length of the unit and shall be installed as close to all the corners as practicable.

(c) When wood siding or equivalent home siding products are used as underfloor enclosure material, the installation shall comply with the siding manufacturer installation instructions. Where siding manufacturer installation instructions are not available, the installation shall conform to the provisions of the California Building Residential Code. All wood products used in underfloor enclosure construction located closer than six (6) inches to earth shall be treated wood or wood of natural resistance to decay. Where located on concrete slabs placed on earth, wood shall be treated wood or wood of natural resistance to decay.



(d) Where manufacturer installation instructions require the use of a ground vapor barrier under the MH-unit, skirting shall be provided in accordance with this section.

(e) When skirting is installed on an MH-unit or accessory structure in a floodplain, as designated by the local floodplain management agency, the skirting shall be either:

(1) a flexible material that will not impede the water flow, or

(2) if constructed of rigid materials, have openings totaling one (1) square inch of opening for every one (1) square foot of enclosed area. The bottom of these openings shall not be more than one (1) foot above grade. Openings may be equipped with screens, louvers, valves, or other coverings or devices provided that they permit the automatic entry and exit of floodwaters.
NOTE: Authority cited: Section 18300, Health and Safety Code. Reference: Sections 18605 and 18613, Health and Safety Code.
§ 1377. Permit Application Review and Notice of Department Decision.

(a) Within one (1) working day of the receipt of an application to install an earthquake resistant bracing system, the department shall provide the applicant with written notice whether the application is complete pursuant to section 1374.6 and acceptable for filing. If the application is not complete, the notice shall specify the information and/or documentation necessary to complete the application. If the application is not complete, the notice, the application and the accompanying documentation shall be returned to the applicant.

(b) Within seventeen (17) working days of the receipt of a complete and acceptable application, the department shall issue a permit or shall provide the applicant with written notice of the department's refusal to issue a permit. The written notice of refusal shall specify the reasons why the permit may not be issued.

(c) An application for a permit to install an earthquake resistant bracing system shall be considered complete and acceptable if it is in compliance with the provisions of section 1374.6 of this article.

(d) Should the applicant fail to submit a complete and acceptable application within ninety (90) days of the notice of rejection, the application shall be deemed abandoned and all fees submitted pursuant to section 1025 shall be forfeited to the department. Should an applicant cancel the application for the permit to install a manufactured home or mobilehome earthquake resistant bracing system, all fees submitted shall be forfeited to the department.

(e) The estimated minimum, median, and maximum elapsed time between receipt of a completed application for a permit to install an earthquake resistant bracing system and reaching a final decision are as follows:

(1) Minimum one (1) working day

(2) Median two (2) working days

(3) Maximum seventeen (17) working days

(f)(1) The applicant may request and shall be granted an informal administrative a hearing for a timely resolution of any dispute arising from a violation of the time periods within which the department must process this application as set forth in Section 1757. Such request may be made to the Secretary of the Business, Transportation, and Housing Agency and or the director of the department or his or her duly authorized representative. The request shall be a written petition requesting a hearing which sets forth a brief statement of the grounds therefore as set forth in section 1756.

(2) Upon receipt of the written petition, the department shall set a time and place for the hearing and shall give the petitioner at least ten (10) days written notice. The hearing shall commence no later than thirty (30) days after the day on which the petition was filed except that, upon application or concurrence of the petitioner, the department may postpone the date of the hearing for a reasonable time beyond the thirty (30)-day period, if in its judgment the petitioner has submitted or the department has a good and sufficient reason for the postponement. Should petitioner fail to appear at the scheduled time and place of the hearing, the department may dismiss the petition without further action or take other action as may be appropriate.

(3) Upon conclusion of the hearing, either the Secretary of the Business, Transportation, and Housing Agency or the director of the department, or his or her duly authorized representative, shall notify the petitioner in writing of the decision in the matter and the reasons therefor, within forty-five (45) days.

(4) The petition shall be decided in the applicant's favor, if the department has exceeded the established maximum time period of issuance or denial of the permit and the department has failed to establish good cause for exceeding the time period.

(5)(3) If the petition is decided in the applicant's favor, the applicant shall receive full reimbursement of any and all filing fees paid to the department.
NOTE: Authority cited: Sections 18502.5 and 18613.7, Health and Safety Code, and Section 15376, Government Code. Reference: Sections 18300, 18502.5, and 18613.7, Health and Safety Code, and Section 15376, Government Code.
§ 1426. Accessory Buildings or Structures and Building Components Installed in Fire Hazard Severity Zones.

(a) Accessory buildings or structures or building components constructed or installed in parks in a State Responsibility Area Fire Hazard Severity Zone or a local Very-High Fire Hazard Severity Zone, as indicated on the California Department of Forestry and Fire Protection’s Fire Hazard Severity Zone Maps, shall comply with the Title 24, Part 2.5, Chapter 3, section R327 of the California Residential Code (CRC) which is hereby incorporated by reference with the exception of the following provisions: Sections R327.3.6, R327.1.5 and R327.2 (Fire Protection Plan).Standards of Quality as defined in section 703A and the Materials, Systems, and Methods of Construction as defined in the section 704A of the California Building Code, Title 24, Part 2 Chapter 7A.

(b) Accessory buildings or structures or building components constructed or installed outside of parks in a State Responsibility Area Fire Hazard Severity Zone, a local Very-High Fire Hazard Severity Zone, or a local Wildland-Urban Interface Fire Area shall comply with the provisions of the California Building Code CRC, Title 24, Part 2.5, Chapter 7A 3, section R327.
NOTE: Authority cited: Sections 18300 and 18691, Health and Safety Code. Reference: Section 18691.
§ 1429. Required Exits.

(a) An enclosed accessory building or structure or building component may be constructed or installed to enclose an emergency exit window from a sleeping room within a unit provided the enclosed area adjacent to the emergency exit window has a door not less than twenty-eight (28) inches in width and seventy-four (74) inches in height providing direct access to the outside. The exit doorway from the enclosed accessory building or structure, or building component shall comply with the exit illumination requirements contained in the California Building Residential Code and lighting outlet requirements contained in the California Electrical code.

(b) An accessory building or structure which encloses a required exit doorway from an MH-unit shall have an exit path and exit that does not violate the exit facilities requirements for manufactured homes, as contained in the Manufactured Home Construction and Safety Standards, 24CFR, Part 3280.105.

(c) An awning enclosure that encloses a required exit shall not be divided with interior walls or barriers unless the divided areas contain additional exit doors serving the divided areas that comply with subsection (a).


NOTE: Authority cited: Sections 18029 and 18300, Health and Safety Code. Reference: Sections 18029, 18552, and 18610, Health and Safety Code.
1432. Construction.

(a) Construction and installation of accessory buildings or structures or building components shall comply with the structural requirements for permanent buildings of the California Residential Code, except as otherwise provided by this article. The enforcement agency may require accessory buildings and structures or building components be designed and constructed to withstand live loads, vertical uplift or horizontal forces from any direction in excess of the minimum loads specified in this chapter, based on local geologic, topographic, or climatic conditions, when approved by the department.

(b) Accessory buildings and structures constructed of aluminum or aluminum alloy shall be designed to conform to the specifications contained in the California Building Residential Code.

(c) Unless data to substantiate the use of higher values is submitted to the enforcement agency, the allowable loading of accessory buildings or structures or building components on the soil shall not exceed one thousand five-hundred (1,000)(1,500) psf vertical soil bearing pressure, one hundred fifty (150) psf of depth lateral soil bearing pressure, and one hundred sixty-seven (167) psf frictional resistance for uncased cast-in-place concrete piles.


NOTE: Authority cited: Section 18300, Health as Safety Code. Reference: Sections 18552 and 18620, Health and Safety Code.
§ 1446. Cabana-Design and Construction.

A cabana shall be designed and constructed as a freestanding structure. A cabana shall not be attached to a unit, however, to provide a weather seal, flashing or sealing materials may be affixed between the cabana and the unit. The design and construction requirements applicable to of cabanas are shall follow the requirements contained in the California Building Residential Code, except as otherwise provided in this article.


NOTE: Authority cited: Section 18300, Health and Safety Code. Reference: Section 18552, Health and Safety Code.
§ 1450. Cabana- Support System.

(a) Cabanas may be installed using a support system in lieu of continuous footings. Girders shall be designed and constructed to evenly distribute the loads carried to the footings.

(b) Support systems shall comply with the applicable requirements of section 1334.

(c) When a support system is used in lieu of a foundation system, the cabana shall comply with the tiedown requirements for manufactured homes as specified in sections 1336.1 through 1336.4.

NOTE: Authority cited: Section 18300, Health and Safety Code. Reference: Section 18552, Health and Safety Code.


§ 1458. Cabana-Light and Ventilation.

(a) Each habitable room shall have an aggregate glazed window area of not less than ten (10) eight (8) percent of the gross floor area for natural lighting with a minimum of fifty (50) percent of the glazed area able to be opened for ventilation. or ten (10) square feet, whichever is greater. When the cabana encloses windows of the manufactured home or mobilehome, park trailer, or travel trailer required for light and ventilation, the window area of the cabana shall be not less than twenty (20) percent of the gross floor area of the total area of windows enclosed by the cabana.

(b) A bathroom, toilet room, or service room shall have an aggregate window area of not less than three (3) square feet, except where an approved mechanical ventilation system is provided. When a service or storage room does not enclose or obstruct a window of the manufactured home or mobilehome, park trailer, or travel trailer, no additional window area is required.

(c) Where ventilation of a room is by natural means, openings such as windows, skylights, grilles or gravity vents shall have a minimum net free cross sectional area opening to the outer air equal to five (5) percent of gross floor area.

(d) Required windows of a cabana shall open to an open space, either directly or through a porch or awning having a minimum clear height of not less than six (6) feet two (2) inches. Such porch or awning shall be at least fifty (50) percent open on the side opposite the windows.

(e) For bathrooms, toilet rooms or service rooms, where the net free cross-sectional area of available natural ventilation is less than five (5) percent of the gross floor area, an approved system of mechanical ventilation and artificial light may be used in lieu of required natural light and ventilation.

(f) Where mechanical ventilation is installed, it shall be capable of producing two (2) air changes per hour with not less than one-fifth (1/5) of the air supply taken from outside the cabana, except that in bathrooms, toilet rooms or service rooms, the mechanical ventilation system, connected directly to the outside, shall be capable of providing five (5) air changes per hour.
NOTE: Authority cited: Section 18300, Health and Safety Code. Reference: Section 18552, Health and Safety Code.
§ 1464. Cabana-Energy Standards.

The energy requirements for cabanas shall comply with the following:



(a) Cabanas with a total floor area less than 250 square feet shall be provided with the following minimum thermal resistance (R) rated insulation.

(1) Roof/ceiling – R-19.

(2) Walls and raised floors – R-13.

(3) All window areas must be dual-glazed.

(a b) For cabanas with a total floor area of 250 to 500 600 square feet or less, the applicable minimum requirements in the "Mandatory Measures Checklist: Residential, MF-1R" dated August 2001, which is incorporated by reference, or as thereafter amended by the Commission, as set forth in the "Residential Manual for Compliance with California’s 2001 Energy Efficiency Standards", to the extent applicable to construction materials, appliances or fixtures within the cabana. Exception: "Cool Roof" material shall not be required for cabana construction.

(b c) For cabanas with a total floor area of more than 600 500 square feet, the minimum requirements in the California Energy Code as applicable to residential dwellings for the zone in which the cabana will be located, to the extent applicable to construction materials, appliances, or fixtures within the cabana. Exception: "Cool Roof" material shall not be required for cabana construction.

(c d) The enforcement agency may develop and use or provide as informational guidelines energy standard charts implementing or specifying the California Energy Code requirements which are otherwise used for construction within the jurisdiction of the enforcement agency.



(e) Plans for cabana construction must indicate the method for providing active or passive space-heating capable of providing an average indoor temperature of sixty-eight (68) degrees.

NOTE: Authority cited: Section 18300, Health and Safety Code. Reference: Section 18552, Health and Safety Code.


§ 1468. Awning-Design and Construction.

(a) An awning and its structural parts, except cloth, canvas, or similar flexible materials, shall be designed, constructed, and erected to adequately support all dead loads plus a minimum vertical live load of ten (10) psf except that snow loads shall be used where snow loads exceed this minimum. Requirements for the design of awnings necessary to resist minimum horizontal wind pressure are contained in the California Building Residential Code Appendix Chapter 31.

(b) The following awnings shall be completely freestanding;

(1) awnings with a roof structure dead load weight of more than six (6) psf;

(2) awnings exceeding twelve (12) feet in width (projection) as measured from the wall of the MH-unit to the outer edge of the awning roof; and

(3) awnings required to be designed and constructed for live loads in excess of ten (10) psf.

(c) Flashing or sealing materials may be used to provide a weather seal between a freestanding awning and a unit. No separation is required between a freestanding awning and an attached awning located on the same lot.

(d) Notwithstanding the provisions of subsection (b), an awning installed in an area with a roof live load not to exceed 20 psf with a dead load not to exceed six and one-half (6 ½ ) psf may be attached to an MH-unit provided all of the following apply:

(1) the MH-unit was manufactured after September 15, 1971, and bears a department insignia of approval or a HUD label of approval; and

(2) it is provided with continuous perimeter support under the rim joist below the wall for the entire length of the awning or as a perimeter support system designed in accordance with the California Building Code and

(3) it is secured to the sidewall, excluding eaves and overhangs.

(e) Awnings with a roof structure dead load weight of one (1) psf or less, do not require perimeter supports on the MH-unit wall at the point of attachment unless the MH-unit installation instructions require perimeter wall supports because of the additional load.

(f) All awnings on lots occupied by recreational vehicles shall be freestanding and shall not transmit any loads to the recreational vehicle except for cloth or canvas or similar flexible material.

(g) Combustible material used in awnings shall not be installed within three (3) feet of the lot line pursuant to section 1428 of this chapter. However, wooden support posts, installed in accordance with section 1428(h), may be located up to a lot line.


NOTE: Authority Cited: Section 18300, Health and Safety Code. Reference: Section 18552, Health and Safety Code.
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