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Article 3: Zoning Districts
Section 3.8. Overlay Districts
3.8.4. Town Center Conservation Overlay (TCCO) District
June 23, 2017
Morrisville, NC
Page 3-66 Unified Development Ordinance
(6)
Developable Area
(A)
The minimum lot size may be reduced to 4,500 square feet.
(B)
Development shall be sited amongst established trees to maintain the open
character of the remainder of the site to the maximum extent practicable.
(C)
The maximum number of dwelling units in the Town Center Conservation Overlay
District shall match the maximum number allowable under the base zoning for the
district. First the “buildable area” shall be calculated by taking the total site area
and subtracting the area for all required riparian buffers and perimeter buffers,
as well as floodways and street rights-of-way. A factor consisting of ten percent of
the total site area shall be used for the street right-of-way. The “buildable area”
shall then be divided by the minimum lot size for the base zoning district to establish
the “lot yield”. The lot yield shall be rounded down to the nearest whole number to
determine the maximum allowable number of dwelling units that can be built on the
site.
(7)
Density Bonus
(A)
An applicant may petition the Town for a density bonus of up to an additional 20
percent of the maximum allowable number of dwelling units allowed under the
base zoning if the applicant permanently dedicates open space to the Town for
public use in a manner consistent with the current Town Center Plan (as determined
by the Planning Director) and the current Parks, Recreation, Greenways, and Open
Space Master Plan (as determined by the Parks & Recreation Director). The number
of additional dwelling units granted shall be commensurate with the amount of open
space dedicated. The Town Council shall decide whether or not to grant the density
bonus requested by the applicant.
(B)
If the maximum lot yield allowed through the density bonus cannot be
accommodated on a given site, as determined by the Planning Director, then the
applicant may reduce the required open space. However, in no case shall the
amount of protected open space be less than 70 percent of the total site area.
b.
Development in Town Center Commercial (TCC) and Floodplain Overlay (FO)
Districts
The following standards apply to new development within the Town Center Commercial (TCC)
District, where part of the development site is located within the Floodplain Overlay (FO)
District.
(1)
Buildings shall be clustered out of the Floodplain Overlay (FO) District to the maximum
extent practicable.
(2)
The maximum structure height may be increased to three stories for developments that
cluster buildings out of the Floodplain Overlay (FO) District. However, the maximum floor
area ratio (FAR) shall not exceed the maximum allowed in the underlying base district.
(3)
Impervious areas, such as parking lots, that are located within the Floodplain Overlay
(FO) District shall incorporate Low Impact Development (LID) techniques to protect water
quality and reduce run-off. Low impact development techniques may include infiltration
rain gardens, grass swales, or other porous landscape stormwater detention areas as
approved by the Town Engineer. These shall be provided in addition to the Town
’
s
standard stormwater requirements.
(Ord. No. 2015-002, 04/29/2015)