It is intended that the E-3 district be applied in those areas where large, single-family lots are desired to allow a semirural environment. (Ord. 1576 §1 2001)

The following uses are permitted by right in the E-3 district:

(A) One-family dwellings;

(B) Aboveground or underground distribution and transmission lines for public utilities when said lines primarily serve the city;

(C) The keeping of horses with three horses allowed per lot; plus one horse for every 0.33 acre of lot area over one acre;

(D) The total number of the animals permitted by this chapter on any single lot, excepting chickens and ducks but including horses, shall not exceed three per acre or any fraction thereof, and animals born on the property may remain on the property in excess of the allowed numbers until fowl reach the age of four months and other animals reach the age of eight months;

(E) Home occupations as defined in section 17-32-020(A); except as otherwise provided by this subsection:

(1) Such use shall be conducted entirely within a structure, and such use shall be carried on by the inhabitants living there;

(2) Such use shall be clearly incidental and secondary to the use of the dwelling for dwelling purposes and shall not change the character thereof;

(3) The total area used for such purposes shall not exceed one-half the square footage of the first floor of the residence;

(4) There shall be no exterior signs or advertising;

(5) There shall be no exterior storage on the premises of any material or equipment used as a part of the home occupation;

(6) There shall be no offensive vibration, noise, smoke, dust, odors, heat, or glare noticeable at or beyond the property line;

(7) No more than two motor vehicles associated with patrons or employees of the home occupation shall be parked at any time on the dwelling unit site or on the street frontage of such dwelling unit; and

(8) No commercial vehicles as defined in section 235(a) of the Model Traffic Code for Colorado Municipalities, Revised 1995, and no more than one motor vehicle and no more than one trailer as defined in section 10-12-040, B.M.C., used in whole or in part for a home occupation, shall be parked at any time outside of an enclosed structure on the dwelling unit site or on the street frontage of such unit; and if parked on the street, said trailer must be attached to a licensed vehicle;

(F) Accessory buildings typically found with the above-permitted uses, with the following conditions:

(1) The total square footage of accessory buildings and the first floor of the principal residence shall not exceed 12.5% of the lot square footage;

(2) Enclosed accessory buildings of greater than 150 square feet shall be clad principally with stone, brick, glass, lexan (or similar material), colored, textured concrete masonry unit; metal architectural siding colored to match the principal structure, or wood frame with colored decorative siding to match the principal structure. (Ord. 1576 §1, 2001)

The following uses are permitted by special review in the E-3 district:

(A) Churches and church facilities;

(B) Child day care facility;

(C) Noncommercial recreational uses;

(D) Private schools;

(E) Residential planned unit developments (PUDs);

(F) Public utility substations and major transmission lines when said lines primarily serve areas other than Broomfield, and substations shall not contain major office, repair, or storage space;

(G) Municipal buildings;

(H) Public uses as follows:

(1) Water facilities, including storage,

(2) Wastewater treatment facilities, and

(3) Related facilities; and

(I) Oil wells or gas wells. (Ord. 1576 §1, 2001)

(A) After review and upon approval by the land use review commission, the following animals may be kept on the property, provided that the number of such animals does not exceed the total number permitted by subsection 17-13-020(D):

(B) In considering an application to keep any of the animals listed in subsection (A) above, the land use review commission, after notice in accordance with chapter 17-52, B.M.C., and public hearing, shall consider the following criteria:

(1) Testimony by adjoining property owners regarding the impact of the proposed animals on the enjoyment and use of their property;

(2) Submission of an animal management plan that minimizes the impacts of noise, odor, vermin, flies, and dust on adjacent properties;

(3) Control of stormwater runoff from pasture areas to adjoining properties;

(4) Adequacy of fencing to contain animals; and

(5) Intensity of use of the property. (Ord. 1576 §1, 2001)

The following are minimum lot and yard requirements in the E-3 district:

(Ord. 1576 §1, 2001)

Buildings in the E-3 district shall not be higher than thirty-three feet as measured in accordance with the provisions of section 17-38-320(F). Accessory buildings shall not exceed twenty-five feet in height. (Ord. 1576 §1, 2001)

Use of land in the E-3 district shall also conform to the parking, signing, and other provisions of this title, except as hereinafter provided:

(A) Open pasture fences located in front yards shall not exceed five feet in height.

(B) Principal exterior building materials for residences shall consist of brick, stucco or stone. Block larger than 4" x 16" shall not be permitted. Frame or shingle siding may be used as accent materials.

(C) Notwithstanding section 17-32-080, B.M.C., driveways and parking areas may be constructed of gravel, concrete, brick, or asphalt, including recycled material. (Ord. 1576 §1, 2001)