CHAPTER 17 Title 10 R-3 Residence Zone
CHAPTER 17
R-3 RESIDENCE ZONE
SECTION:
10-17-1: General Objectives and Characteristics of Zone
10-17-2: Use Requirements
10-17-3: Width Requirements
10-17-4: Special Provisions Regarding Single-Family Attached Townhouse Dwellings
10-17-5: Vehicular Access
10-17-6: Special Provisions Applying To R-3 Zone
10-17-1: GENERAL OBJECTIVES AND CHARACTERISTICS OF ZONE: The objective in
establishing the R-3 Residence Zone is to designate appropriate areas within the City for rental
dwelling units, multiple family dwellings and similar buildings where living accommodations for
groups may be located. This zone is characterized by a variety of dwelling types having widely
varying forms and shapes, with somewhat denser residential environment.. In general, this zone
is situated where the need for rental units is greatest, along major streets and on the borders of
neighborhoods.
In order to accomplish the objectives and purposes of this ordinance and to promote the essential
characteristics of this zone, the following regulations shall apply in the R-3 Residence Zone (see
also 10-5 Supplementary Regulations to Zone, 10-7 Special Provisions Applying to Miscellaneous
Uses, 10-29 Subdivision Regulations, and §10-37 District Use Matrix). This zone does not allow
a density of more than sixteen (16.0) dwelling units per acre.
10-17-2: USE REQUIREMENTS: In addition to the allowed residential uses the following
uses shall be permitted in the R-3 Residence Zone:
(A) Incidental retailing of goods and services, such as newspapers, magazines, minimal food
items, grooming items, and the like, for the convenience of people who live in apartment
buildings, assisted living centers and convalescent homes; provided the facilities therefor
shall be located within the main building, and provided that no sign or display shall be
used advertising the retail services offered within the building which can be seen from a
public street. Provided further, that the floor area devoted to the retailing of goods and
services shall not exceed ten (10) square feet for each dwelling unit contained within the
main building.
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10-17-3: WIDTH REQUIREMENTS: The minimum width of any building site or residential
building lot for each building containing one (1) dwelling unit shall be as specified in 10-14-4. The
minimum width of any building site or residential building lot for each building containing two (2)
or more dwelling units shall be as specified in 10-14A-4. The minimum width of any building site
or lot for each child day care center shall be as specified in 10-15-4. The minimum width of any
building site or lot, for use as an Assisted Living Center or Convalescent Home shall be as
specified in 10-16-4.
10-17-4: SIZE OF BUILDINGS: For attached multiple family dwellings and other buildings,
there shall be no minimum floor area requirements. For single family detached or attached
townhouses/condominium units the minimum square footage shall be 1000 square feet per living
unit.
10-17-5: LOT COVERAGE:
(A) Maximum Lot Coverage. Lot coverage, including all areas under roofs and paved or
concrete surfaces, shall not exceed seventy percent (70%) of the total lot and parking
area. The maximum lot coverage of single-family attached dwelling units shall be sixty
five percent (65%) for interior lots and fifty percent (50%) for corner lots. The remaining
lot area shall be landscaped in accordance with provisions of this ordinance. All
landscaping outside of that immediately between any main building and any public street
shall be located, designed, and developed for the benefit and enjoyment of the residents
of the dwelling(s), including appropriate play areas for children.
(B) Lot Coverage Exemption. The landscaped area on a lot will be considered to include
such hard-surface outdoor recreation facilities as tennis courts, basketball courts,
shuffleboard courts, and swimming pools, provided that:
1. The hard-surface outdoor recreation facilities make up no more than forty percent
(40%) of the required landscaped area, and
2. Those facilities are available for the use of all residents of the development.
(C) Required Buffers. Wherever a development in the R2A Zone adjoins land zoned RE, RP,
RP-A, R-1, R1-A or RMH, or unincorporated land designated for single family residential
use in the City's Comprehensive Plan, a minimum ten (10) foot wide landscaped buffer
and a minimum six (6) foot high site obscuring fence shall be provided. This buffer may
be included in the thirty percent (30%) minimum landscaped area required in (A) above.
If an open space of at least thirty (30) feet is provided between all buildings (whether main
or auxiliary) and the adjacent zone the requirement of a fence can be waived. Said open
space shall include some combination of planted trees, shrubs, vines, ground cover,
flowers or lawns.
10-17-5: SPECIAL PROVISIONS REGARDING SINGLE-FAMILY ATTACHED
TOWNHOUSE DWELLINGS: These provisions apply to single-family attached townhouse
dwellings (those attached to adjacent units only via zero lot lines) only.
(A) No single-family attached dwelling shall be located above another dwelling unit, either in
whole or in part.
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(B) Each single-family attached dwelling shall have at least one direct pedestrian access from
the interior of the dwelling to the property line of the dwelling unit and no pedestrian access
may be held in common with another single-family dwelling unit.
(C) Except as noted below, a single-family attached dwelling shall have no facilities or property
in common with another single-family attached dwelling and all dwellings shall be
structurally and functionally independent from each other. All single-family attached
dwellings shall have separate electrical service, water service lines, and sanitary sewer
service lines. Common facilities or property are allowed for the following:
1. Common party walls constructed in accordance with the International Building
Code.
2. Foundations supporting attached or party walls.
3. Flashing at the termination of the roof covering over any attached walls.
4. Roofs.
5. Vehicular access to a dedicated street for off-street parking facilities or detached
garages.
(D) No certificate of occupancy shall be issued for a single family attached dwelling unless a
common facility or party wall agreement or Declaration of Condominium, together with a
separate legal description for each living unit has been filed with the Bonneville County
Recorder's Office and a copy provided to the City of Ammon, for each such dwelling unit
which shares common facilities with another unit. Such agreement shall include a legal
description of the individual dwelling units sharing common facilities and shall allocate
responsibility as and between the owners of such lots for the use, maintenance, and
ownership of all common facilities.
10-17-6: VEHICULAR ACCESS: All lots upon which a dwelling is located shall have
a vehicular access to and frontage upon a dedicated street or upon a granted easement of
access of not less than twenty-five (25) feet in width and of a distance from the public dedicated
street of no longer than approved by the planning and zoning commission.
10-17-7: SPECIAL PROVISIONS APPLYING TO R-3 ZONE: Landscaping shall be as set
forth in section 10-5-24.
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