304.1.2  Vegetation.  Weeds,  grass,  vines  or  other  growth that is capable of being ignited and endangering property, shall be cut down and removed by the owner or occupant of  the  premises.  Vegetation  clearance  requirements  in urban-wildland interface areas shall be in accordance with Chapter 49.

[California  Code  of  Regulations,  Title  19,  Division  1,§3.07(b)] Clearances.

(b)  Ground  Clearance.  The  space  surrounding  every building  or  structure  shall  be  maintained  in  accordance with the following: Any  person  that  owns,  leases,  controls,  operates,  or maintains any building or structure in, upon, or adjoining  any  mountainous  area  or  forest-covered  lands, brush  covered  lands,  or  grass-covered  lands,  or  any land which is covered with flammable material, shall at all times do all of the following:

(1)  Maintain  around  and  adjacent  to  such  building or  structure  a  firebreak  made  by  removing  and clearing away, for a distance of not less than 30 feet on each side thereof or to the property line, which-ever  is  nearer,  all  flammable  vegetation  or  other combustible  growth.  This  section  does  not  apply  to single specimens of trees, ornamental shrubbery, or similar  plants  which  are  used  as  ground  cover,  if they do not form a means of rapidly transmitting fire from the native growth to any building or structure.

(2) Maintain around and adjacent to any such building  or  structure  additional  fire  protection  or  fire-break   made   by   removing   all   bush,   flammable vegetation,  or  combustible  growth  which  is  located from 30 feet to 100 feet from such building or structure or to the property line, whichever is nearer, as may be required by the enforcing agency if he finds that,  because  of  extra  hazardous  conditions,  a  fire-break of only 30 feet around such building or structure  is  not  sufficient  to  provide  reasonable  fire safety.  Grass  and  other  vegetation  located  more than 30 feet from such building or structure and less than  18  inches  in  height  above  the  ground  may  be maintained where necessary to stabilize the soil and prevent erosion.

(3)  Remove  that  portion  of  any  tree  which  extends within 10 feet of the outlet of any chimney or stove-pipe.

(4)  Cut  and  remove  all  dead  or  dying  portions  of trees located adjacent to or overhanging any building.

(5) Maintain the roof of any structure free of leaves, needles, or other dead vegetative growth.

(6) Provide and maintain at all times a screen over the  outlet  of  every  chimney  or  stovepipe  that  is attached to any fireplace, stove, or other device that burns  any  solid  or  liquid  fuel.  The  screen  shall  be constructed  of  nonflammable  material  with  openings of not more than 1/2 inch in size.

(7)  Vegetation  around  all  applicable  buildings  and structures  shall  be  maintained  in  accordance  with the following laws and regulations:

(A) Public Resources Code Section 4291.

(B)  California  Code  of  Regulations  Title  14  -  Natural Resources,  Division  1.5  -  Department  of  Forestry  and Fire Protection,  “General Guideline to Create Defensible Space.”

(C) California Government Code Section 51182.

(D) California Code of Regulations, Title 24, Part 9.