Colorado Code § 31-15-601

Building and fire regulations - emission performance standards required - reporting
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(1) The governing bodies of municipalities have the following powers in relation to
building and fire regulations:
(a) To regulate the construction, repairs, and use of vaults, cisterns, areas, hydrants,
pumps, sewers, and gutters;
(b) To regulate partition fences and party walls;
(c) To prescribe the thickness and strength of, and the manner of constructing, stone,
brick, and other buildings and to prescribe the construction of fire escapes therein;
(d) To prescribe the limits within which wooden buildings shall not be erected, or moved
into from outside said limits or placed in or repaired without permission, to direct that any
buildings within the fire limits, when the same have been damaged by fire, decay, or otherwise
to the extent of fifty percent of the value, be torn down or removed, and to prescribe the manner
of ascertaining such damage;
(e) (I) To prevent the dangerous construction and condition of chimneys, fireplaces,
hearths, stoves, stovepipes, ovens, and apparatus used in and about any factory and to cause the
same to be removed or placed in a safe condition when considered dangerous;
(II) To regulate and prevent the carrying on of manufacturing which causes and
promotes fires;
(III) To prevent the deposit of ashes in unsafe places and to cause all such buildings and
enclosures as may be in a dangerous state to be put in a safe condition;
(f) To provide for the inspection of steam boilers;
(g) To compel the owners and occupants of houses and other buildings to have scuttles
on the roof and stairs or ladders leading to the same and to compel the owners of all buildings
over two stories in height to provide fire escapes;
(h) To regulate the size, number, and manner of the construction of the doors and
stairways of theaters, tenement houses, audience rooms, and all buildings used for the gathering
of a large number of people, to provide convenient, safe, and speedy exits in case of fire;
(i) To compel the owners of all lots with a building fronting on the street to provide a
number on said building;
(j) To regulate or prevent the storage and transportation of gunpowder, tar, pitch, resin,
coal oil, benzine, turpentine, hemp, cotton, gasoline, nitroglycerine, petroleum, or any of the
products thereof, and other combustible or explosive material within the municipal limits and to
prescribe the limits within which any such regulations shall apply; to regulate the use of lights in
garages, shops, and other places; to regulate or prevent the storage of gunpowder and other high
explosives within the municipal limits or within one mile of the outer boundaries thereof; and to
regulate and restrain the use of fireworks, firecrackers, torpedoes, roman candles, skyrockets,
and other pyrotechnic displays;
(j.5) To regulate fires consistent with the provisions of section 31-15-401 (1)(q);
(k) To regulate and prohibit the keeping of any lumberyard and the placing, piling, or
selling of any lumber, timber, wood, or other combustible material within the fire limits of the
municipality and to regulate the storage of any combustible material at any place within the
limits of the municipality;
(l) To erect engine houses and provide fire engines, hose, hose carts, hooks and ladders,
and other implements for the extinguishing of fires and provide for the use and management of
the same by volunteer fire companies or otherwise; to determine the powers and duties of the
members of the fire department in taking charge of property to the extent necessary to bring
under control and extinguish any fire; to preserve and protect property not destroyed by fire; and
to restrain persons from interfering with the discharge of the duties of the members of the fire
department in connection with the fighting of any fire;
(m) [Editor's note: This version of subsection (1)(m) is effective until January 1,
2026.] (I) To adopt an ordinance to authorize, in consultation with the local board of health,
local public health agencies, and any water and wastewater service providers serving the
municipality, the use of graywater, as defined in section 25-8-103 (8.3), C.R.S., in compliance
with any regulation adopted pursuant to section 25-8-205 (1)(g), C.R.S., and to enforce
compliance with the governing body's ordinance.
(II) Before adopting an ordinance to authorize the use of graywater pursuant to
subparagraph (I) of this paragraph (m), the municipal governing body is encouraged to enter into
a memorandum of understanding with the local board of health, local public health agencies, and
any water and wastewater service providers serving the municipality concerning graywater usage
and the proper installation and operation of graywater treatment works, as defined in section 25-
8-103 (8.4), C.R.S.
(m) [Editor's note: This version of subsection (1)(m) is effective January 1, 2026.] (I) 
To adopt an ordinance, in consultation with the local board of health, local public health
agencies, and any water and wastewater service providers serving the municipality, regarding the
use of graywater, as defined in section 25-8-103 (8.3), in compliance with any regulation
adopted pursuant to section 25-8-205 (1)(g), and to enforce compliance with the governing
body's ordinance. The governing body of a municipality:
(A) May adopt an ordinance prohibiting the installation of graywater treatment works, as
defined in section 25-8-103 (8.4), and the use of all graywater or prohibiting one or more
categories of graywater use that the water quality control commission establishes in rules
adopted pursuant to section 25-8-205 (1)(g); and
(B) Pursuant to section 25-8-205.4 (2)(b), shall notify the division of administration
within the department of public health and environment of any ordinance adopted pursuant to
subsection (1)(m)(I)(A) of this section. A governing body of a municipality that sends notice
pursuant to this subsection (1)(m)(I)(B) may subsequently authorize the installation of graywater
treatment works and the use of graywater or authorize categories of graywater use previously
prohibited at any time by adopting an ordinance. A governing body of a municipality that
subsequently authorizes the use of graywater shall promptly notify the division of administration
within the department of public health and environment of the subsequent authorization.
(II) A municipal governing body that has not prohibited all graywater use pursuant to
subsection (1)(m)(I) of this section is encouraged to enter into a memorandum of understanding
with the local board of health, local public health agencies, and any water and wastewater
service providers serving the municipality concerning graywater usage and the proper
installation and operation of graywater treatment works, as defined in section 25-8-103 (8.4).
(2) By the date established in section 25-7-407, C.R.S., every governing body of a
municipality which has enacted a building code, and thereafter every governing body which
enacts a building code, shall enact a building code provision to regulate the construction and
installation of fireplaces in order to minimize emission levels. Such building code provision shall
contain standards which shall be the same as or stricter than the approved emission performance
standards for fireplaces established by the air quality control commission in the department of
public health and environment pursuant to section 25-7-407, C.R.S.
(3) By January 1, 2020, every governing body of a municipality which has enacted a
building code and an energy code shall report the current version of their municipality's building
and energy codes to the Colorado energy office. Thereafter, every governing body of a
municipality is encouraged to report any change in their municipality's building and energy code
to the Colorado energy office within a month of changing their municipality's building and
energy codes.

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