(a) Awning enclosures shall be used only for recreational or outdoor living purposes and shall not be used as carports or storage rooms nor shall they be constructed or converted for use as a habitable room or a cabana.

(b) Combustible material used for awning enclosures shall not be installed within three (3) feet of the lot line pursuant to section 2428 of this chapter.

(c) Awnings may be enclosed or partially enclosed as follows:

(d) Where an awning is erected or constructed immediately adjacent to or over a permanently constructed retaining wall of fire resistant material, there shall be not less than eighteen (18) inches clear ventilating opening between the underside of the awning roof and the top of the wall extending the full length of the awning.

(e) An awning shall not be enclosed unless the enclosure is designed and constructed as a freestanding structure or unless the awning is designed and constructed to withstand the additional forces imposed by the enclosure.

(f) The construction requirements for awning enclosures are contained in the California Residential Code.

(g) Heating, cooking, or fuel burning appliances or equipment shall not be installed or used within an awning enclosure.

(h) An awning enclosure shall be separated from the unit's interior by walls, windows, doors, or sliding glass doors.

(i) When an exit from the unit is enclosed, the exit from the enclosure shall satisfy the exit and lighting requirements contained in section 2429 of this chapter.