UDO Update 082024

High Density Residential (HDR) District

3.3.5.

High Density Residential (HDR) District

A. Purpose

In accordance with the Comprehensive Plan, the High Density Residential District accommodates neighborhoods with a variety of housing types and a net density greater than 7.5 dwelling units per acre. It is suitable for infill development in established neighborhoods, for development of areas identified as high density residential in the Comprehensive Plan, or areas suited to high density development supported by adequate infrastructure and nonresidential land uses. The regulations of this district are intended to allow innovation in the arrangement of buildings within such developments and discourage the development of land uses that could substantially interfere with, or be detrimental, to residential character.

B. Principal Intensity and Dimensional Standards

Cross References

A, etc. are symbols used in the illustrations showing application of dimensional standards

Art. 4: Use Standards Art. 5: Development Standards

Single Family

Single Family

Multi family Dwellings

Duplex Dwellings

Other Uses

Sec. 5.9.6 Sec. 5.9.7

Detached Dwellings

Attached Dwellings

Lot Standards

Art. 6: Riparian Buffers

Min. Net Lot Area (sf)

3,500

5,000

n/a

20,000

20,000

Art. 7: Stormwater Management

A

Min. Lot Width (ft)

35

50

24

100

100 n/a

Max. Net Density (du/ac) Max. Lot Coverage (%)

17.0

17.0

17.0

17.0

65

65

70

65

65

Setbacks

B1

Alley-loaded

10 [1]

10 [1]

10 [1]

n/a

n/a

Min. Front (ft)

B2

Other

20

20

20

20

30

C

Min. Side (ft)

0

0

0

30

30

D

Min. Corner Side (ft)

8

8

18

30

30

E1

Alley-loaded

6 [1]

6 [1]

6 [1]

n/a

n/a

Min. Rear (ft)

E2

Other

15

15

10

30

30

Building Standards F1 Max. Structure Height (ft)

45

45

45

75

75

no minimum

no minimum

no minimum

no minimum

F2 Min. Structure Height (stories)

3 [2][3]

Min. Building Separation (ft) n/a Notes: sf = square feet; ft = feet; du = dwelling unit; ac = acre; % = percent; n/a = not applicable [1] Setbacks also apply to residential developments with detached front-loaded garages located to the rear of the principal structure. [2] Applied to multifamily developments. See additional standards in Section 5.9.8.C.1, Minimum Height. [3] The minimum structure height for a carriage – style building with multifamily dwellings over garages is two stories. (Ord. No. 2014-022, 06/24/2014; Ord. No. 2016-001, 05/10/2016) 6 6 24 n/a

G

Morrisville, NC

June 13, 2023

Unified Development Ordinance

Page 3-12