Section 29-25 Screening and landscaping requirements.
Prior to the adoption of Ord. 17584 on 02/17/2003, Section 29-25 read as follows.
Purpose. The intent of this section is to:
(1) Establish healthy environmental
conditions by providing shade, air purification, oxygen
regeneration, groundwater recharge, storm water runoff retardation, erosion control, and noise,
glare and heat abatement.
(2) Provide visual buffering from
streets, to buffer potentially incompatible land uses and to
generally enhance the quality and appearance of a development site, and the city in total.
(3) Encourage the preservation of
existing trees and vegetation.
(4) Supplement the land disturbance
Authority. The director of public works is hereby designated as the enforcement officer
under this section.
Lands to which this section applies. The landscaping and screening requirements of this
section shall apply to all land public and private located in the City of Columbia, Missouri,
except the following:
(1) Land within zoning districts A-1;
R-1; R-2 (except for those R-2 zoned developments
having lots which contain attached residences and which have side or rear property boundaries
abutting collector or arterial street right of way); RMH; M-C; M-U; F-1; and PUD or portions
thereof consisting of single-family detached dwellings on individual lots and two-family attached
dwellings on individual lots (except for two-family developments having lots which have side or
rear property boundaries abutting collector or arterial street right of way). Notwithstanding this
exception, parking areas and loading/unloading areas in any zoning district shall be subject to the
provisions contained in this section. Buildings or additions to buildings in district C-2 shall be
exempt from the provisions of this section; however, any
parking areas associated with buildings or additions to buildings in District C-2 shall not be
exempt from the provisions of this section.
(2) Development existing or approved
by the City of Columbia in the form of building
permit issuance or final development plan approval, prior to August 19, 1991.
(3) An existing single-family detached
Landscape plan requirements. A landscaping plan, prepared by an individual who can
demonstrate knowledge of landscape design, shall be required as specified in chapter 12-A, the
Land Preservation Act. In addition to those requirements, approval of a landscape plan shall be
required prior to the issuance of building permits, prior to the approval of development plans in
PUD (Other than PUDs or portions thereof consisting of single-family detached dwellings on
individual lots or consisting of two-family attached dwellings on individual lots which do not
have side or rear property boundaries abutting collector or arterial street right of way), O-P and
C-P zoning districts, and prior to the development of any parking area or loading/unloading area.
Screening and landscaping requirements. In addition to the requirements and purpose of
the Land Preservation Act:
(1) A minimum of fifteen percent (15%)
of the total land area of any tract, parcel or lot shall
be landscaped. Landscaping shall be reasonably distributed throughout the site.
(2) No new buildings or additions
to existing buildings shall be permitted unless additional
landscaping is provided on the tract, parcel or lot in an area equal to at least fifteen percent
(15%) of the land area occupied by the new building or addition. This subsection shall not apply
to any land which meets the minimum requirement of subsection (e)(1).
(3) All paved areas with more than
fifty (50) feet of length, within twenty (20) feet of a
street right-of-way shall have a six (6) feet wide street yard landscaping strip within private yards
separating parking areas from abutting street rights-of-way containing no less than four (4) of the
categories of planting materials listed in paragraph (f) of this section. The street yard landscaping
strip shall contain one tree per fifty (50) feet of street frontage. Such trees may be clustered or
arranged within the area and need not be placed at even intervals. The street yard landscaping
strip may contain driveways.
No parking areas shall contain more
than one hundred fifty (150) spaces. If a greater number
is required, separate parking areas of not more than one hundred fifty (150) spaces shall be
provided and shall be separated by a landscaped area of at least ten (10) feet in width. The ten
(10) feet wide landscaped area shall contain four (4) of the categories of planting materials listed
in paragraph (f) of this section. In addition, trees shall be planted within the ten (10) feet wide
landscaped area at the rate of one tree for each fifty (50) lineal feet. Appropriately placed
connections between parking areas are permitted.
No less than fifty (50) percent of
the linear street frontage forming the perimeter of parking
areas described above, exclusive of driveways and entrances, shall contain screening materials.
These materials may consist of plantings from the tree and shrub categories, or ornamental
fences or walls, or earthen berms, or some combination thereof. This screening shall extend to a
minimum of three (3) feet above the grade of the parking lot.
(4) In addition to the above, paved
areas developed after August 19, 1991, and additions to
paved areas which were developed prior to August 19, 1991, exceeding 4500 square feet in area
shall contain a minimum of one (1) tree for every four thousand five hundred (4,500) square feet
of paved area. All required trees planted to achieve compliance, are to be distributed in a
configuration which shades the paved areas within the site. In a case where the location of trees
within the site interferes with the loading and unloading of large vehicles, the required trees may
be placed at the perimeter of the paved areas or in other suitable locations on the site. All
required trees planted to achieve compliance must be a locally adapted species, approved for the
site by the director of public works. The director of public works is authorized to adopt and
maintain a list of approved species to be used for planting required by this section. When a site,
in the opinion of the director of public works, is configured in a manner that makes planting of
required trees impractical or unsafe, shrubs and ground cover may be substituted for trees.
Existing trees saved on the site within the parking area may be credited toward minimum tree
requirements only if it is demonstrated that they have been properly protected during and
following development and if they meet the size requirements of chapter 12A.
(5) Paved areas containing more than
one thousand five hundred (1,500) square feet within
fifty (50) feet of a residential use or residential zoning district or any motor vehicle
loading/unloading areas within fifty (50) feet of a residential use or residential zoning district,
but not separated by street right-of-way, shall be screened from view of the adjoining residential
use or residential zoning district, by landscaping materials, ornamental fence and walls in
combination with plant materials, properly stabilized earthen berms, or a combination of any of
these methods. Screening shall be so designed that at least eighty (80) per cent opacity is
achieved, viewed horizontally, in the space between one foot and five (5) feet above grade at the
screen line, at the time of installation; provided, that where plant materials are used for
screening, these shall be selected and placed to achieve the same objective within four (4) full
growing seasons following planting. All screening material, including plant material, shall be
continuously maintained in good condition, to the above standards.
(6) Landscaping and screening shall
not be allowed to obstruct the view of motorists using
any street, private driveway, parking aisles or the approach to any street intersection so as to
constitute a traffic hazard or condition dangerous to the public safety upon any such street.
(7) Of the combined total number of
trees required to be planted in the six (6) feet wide
street yard landscaping strip and in the interior parking lot, no less than thirty (30) percent shall
be of a species of medium to large shade trees.
(8) Lots which contain attached residences
and which have side or rear property boundaries
abutting collector or arterial street right of way shall have screening either along such boundaries
or around any patios on the lot which are visible from the right of way. The screening shall
consist of landscape materials, ornamental fences or walls in combination with plant materials,
properly stabilized earthen berms, or a combination of these methods. Screening shall be so
designed that at least 50 percent opacity is achieved, viewed horizontally, in the space between
one foot and five feet above grade at the screening line, at the time of installation; provided that
where plant materials are used for screening, these shall be selected and placed to achieve the
same objective within four (4) full growing seasons following planting. Screening shall be placed
on private property. All screening material, including plant material, shall be continuously
maintained in good condition to the above standards.
Planting requirements. The categories of planting material and the minimum planting sizes
for planting materials, where applicable, shall be as follows:
Medium and large deciduous shade trees: Two (2) inch caliper, as measured six (6)
inches above the ground, as specified by the American Association of Nurserymen.
Small deciduous or ornamental trees: Four (4) feet in height as specified by the
American Association of Nurserymen, with the exception of true dwarf species.
Conifers: Six (6) feet in height.
Upright evergreen trees: Four (4) feet in height as specified by the American Association
of Nurserymen, except for true dwarf species.
(5) Deciduous shrubs (minimum two
(2) gallon size).
(6) Evergreen shrubs (minimum two
(2) gallon size).
Ground cover plants (Crowns, plugs, containers): In a number as appropriate by species
to provide fifty (50) per cent surface coverage after two (2) growing seasons.
Grass seeding or sod: As appropriate to provide complete coverage within the first
(9) Perennial flowers.
(10) Ornamental grass.
Installation, maintenance and enforcement.
(1) Required landscaping shall not
be installed until all street yard landscaping strips,
setbacks, tree planting sizes and locations, screening locations and overall planting
configurations are inspected and approved by the city. Deviations from the approved plans shall
be corrected to conform to the approved plan. If, in the opinion of the director of public works,
compliance is not achievable due to unforeseen circumstances, the landscaping plan may be
amended, but in all cases must comply with the requirements of the landscaping requirements for
the zoning district in which the site is located.
(2) All landscaping called for in
the approved landscape plan, living and non-living, shall be
in place and approved by the city prior to issuance of certificates of occupancy. It shall be
unlawful to occupy any structure, or to represent to any person that the structure may be
occupied, prior to the final approval of the landscaping. If, at the time of request for the
certificate, the required landscaping would be jeopardized by weather conditions, the developer
shall comply with applicable provisions of chapter 12A.
(3) The trees, shrubs, fences, walls
and other landscaping materials depicted on approved
plans shall be considered as elements of the project in the same manner as parking, building
materials and other elements. The developer, his successor and subsequent owners and their
agents who are authorized to maintain the property, shall be responsible for the continued
maintenance. Plant material which exhibits evidence of insect pest disease or damage shall be
appropriately treated, and dead plants promptly removed and replaced within the next planting
season. All landscaping will be subject to periodic inspection by the city to ensure compliance.
(4) A minimum one hundred seventy
(170) square feet pervious growing area per medium to
large tree shall be provided. A minimum seventy-five (75) square feet pervious growing area
shall be provided for ornamental trees.
Alternative methods of compliance. Although certain material or a particular method of
construction is specifically prescribed by this section, this section is not intended, especially
whenever a stream, natural rock formation or other physiographic condition exists, to prevent the
use of a material or method of construction not prescribed specifically by this section; provided,
any such alternate material or method has been approved in writing or in plan and its use
authorized by the director of public works. The director may approve in writing or in plan any
such alternate material or method of construction; provided, it is found that the proposed
alternate is for the purpose intended, and is at least the equivalent of that specifically prescribed
by this section in quality, effectiveness, durability, hardiness, and performance.
Exceptions. The following uses are exempt from the requirements of subsection (e)(3) and
Motor vehicles or trailer sales and
Farm machinery sales and service;
except that paved areas of such exempted uses with more than fifty (50) feet of length
twenty (20) feet of a street right-of-way shall have a six (6) feet wide street yard landscaping
strip within private yards separating such areas from abutting street rights-of-way containing no
less than four (4) of the categories of planting materials listed in paragraph (f) of this section.
Such landscaping strip shall not be subject to the tree or screening requirements imposed by
except that the required landscaped areas shall include not less than one
ornamental or other type of tree for each 4,500 square feet of paved area, provided however, that
one (1) large shrub or two (2) medium shrubs may be substituted for each required tree. A large
shrub is defined as one that reaches at least six (6) feet in height in four (4) growing seasons, and
a medium shrub is defined as one that reaches at least thirty (30) inches in height in three (3)
growing seasons. Shrubs which may be grouped together or planted individually, should be from
the deciduous woody ornamental or evergreen families (minimum of five (5) gallon size);
except that when a use listed above has been abandoned, and trees and screening have not been
installed in accordance with the provisions of this section, such tree planting and screening shall
then be required prior to occupancy for any other use.
(j) As used in this section, paved area
means open areas used or occupied by motor
vehicles including parking areas, loading areas and driveways. Paved area does not
areas under the roof of a building, sidewalks or pedways.
(Ord. No. 13058, § 1, 8-19-91; Ord. No. 14334 § 1, 1-3-95; Ord. No. 14963,
§ 1, 9-3-96; Ord.
No. 15474, § 1, 1-5-98; Ord. No. 15640, § 1, 6-15-98; Ord. No. 16126, § 2, 8-16-99; Ord.
16798, § 1, 3-5-01)
Editor's note--Ord. No. 11767, § 1, adopted Feb. 1, 1988, repealed § 29-25, pertaining
design standards for travel trailer parks, which derived from Code 1964, § 19.202; Ord. No.
9958, § 1, adopted Oct. 3, 1983 and Ord. No. 11702, § 1, adopted Dec. 7, 1987.