Unified Development Ordinance

Article 3.6. Additional Housing Patterns

Article 3.6. Additional Housing Patterns aaron.sheppard… Mon, 05/08/2023 - 10:09
Supplement Number
27

Sec. 3.6.1. Cottage Court

Sec. 3.6.1. Cottage Court aaron.sheppard… Tue, 05/23/2023 - 10:07
A. Description
A cottage court is a group of small detached houses, attached houses, townhouses (two-unit maximum per building), or tiny houses sharing a common courtyard. The courtyard enhances the character of the area through the provision of consolidated open space. A cottage court may be developed on individual lots or with a common form of ownership.
B. Districts Allowed In
  RX-, OX-, NX-, CX  
C. Building Types Allowed
  Detached house, Attached house, Townhouse (two-unit maximum per building), Tiny house  
    RX-, OX-, NX-, CX-
D. Site and Lot Dimensions
D1 Net Site Area (min) 13,000 sf
D2 Site Width (min) 90'
D3 Site depth (min) 90'
D4 Site area per non-Tiny House dwelling unit over four (min) 2,400 sf
D5 Site area per Tiny House dwelling unit over four (min) 1,800 sf
D6 Dwelling units per site (max) 30
D7 Dwelling unit gross floor area (max)1 1,800 sf
D8 Detached accessory structure footprint (max)2 450 sf
D9 Individual lot area (min) No min.
1A Tiny House may be no larger than 800 sf in building footprint and no more than 1200 sf in gross floor area.
2A detached accessory structure must be less than the gross floor area of the principal dwelling.
    RX-, OX-, NX-, CX-
E. Internal Courtyard
E1 Area (min) 1,600 sf
E2 Width as measured parallel to primary street for first 15’ of site depth (min)1 20’
E3 Courtyard area per non- Tiny House unit over four (min) 400 sf
E4 Courtyard area per Tiny House unit over four (min) 200 sf
E5 Setback from primary street (max) 0'
F. Principal Building/Structure Setbacks (Site)
F1 From primary street (min) 10'
F2 From side street (min) 10'
F3 From side site line (min) 10'
F4 From rear site line (min) 20'
F5 From alley (min 5'
F6 Building Separation (min) 6'
F. Principal Building/Structure Setbacks (Lots)
F7 From internal cottage court lot line (min) 3'
F8 From shared internal townhouse lot line (min) 0'
G. Surface Parking Setbacks
G1 From primary street if not screened from primary street by C3 yard or principal structure (min) 90'
G2 From primary street if screened from primary street by C3 yard or principal structure (min) 50'
G3 From side street (min) 10'
G4 From side lot line (min) 5'
G5 From rear lot line (min) 5'
G6 From alley (min) 0'
H. Height
H1 Non-Tiny House building height (max) 30'
H2 Tiny House building height (max) 26'
H3 Accessory structure height (max) 26'
  1. Courtyard Requirements and Restrictions
    1. At least 60% of the courtyard must be one contiguous open space.
    2. Courtyard may not be parked or driven upon.
    3.  One common building (detached house building type) not to exceed 3,000 square feet in gross floor area may be permitted in the courtyard under the following conditions:
      1. The common building may not be used as a dwelling.
      2. Uses within the common building must be accessory to the cottage court development.
      3. The common building shall not count towards the maximum number of dwelling units per site (Sec. 3.6.1.D.6.)
      4. Notwithstanding the forgoing, the common building must comply with all other requirements of Section 3.6.1.
    4. Inclusive of the common building, up to 20% of the minimum internal courtyard area (Sec. 3.6.1.E.1.) may be covered, however only 10% of the minimum internal courtyard area (Sec. 3.6.1.E.1.) may be enclosed.
    5. Stormwater detention wet ponds and dry ponds shall not count towards the minimum internal courtyard area (Sec. 3.6.1.E.1.) Green Stormwater Infrastructure (GSI) practices may be used to meet up to 50% of the minimum internal courtyard area (Sec. 3.6.1.E.1.)
    6. Tree Conservation Areas shall not be included as part of the minimum internal courtyard area (Sec. 3.6.1.E.1.)
    7. Retaining walls within the courtyard may be no taller than 4’ in height. Retaining walls that are 2’ or less in height may be spaced as close as 10’ apart. All other retaining walls must be spaced a minimum of 20’ apart.
    8. Pedestrian Access meeting the requirements of Section 8.3.5. shall be provided from each dwelling unit to the courtyard and any other common areas.
  1. Additional Requirements for Manufactured Homes to Qualify as Tiny Houses
         A Tiny House may be a Manufactured Home as defined Article 12.2. if it meets all of the following:
    1. The predominant roofline shall have a pitch of 5:12 or greater.
    2. The eave projections of the roof must not be less than ten inches (excluding roof gutters) unless the roof pitch is 8:12 or greater.
    3. The minimum height of the first-story exterior wall must be at least seven feet, six inches.
    4. Materials used as exterior wall covering shall be of a non-reflective material.
    5. Foundation skirting shall comply with the requirements set forth in Section 4.5.3.D.
    6. The Manufactured Home is no greater than 600 square feet in gross floor area.

Sec. 3.6.2. Accessory Dwelling

Sec. 3.6.2. Accessory Dwelling aaron.sheppard… Tue, 05/23/2023 - 10:08
  1. Purpose and Objectives
    The Accessory Dwelling housing pattern provides for the development of accessory dwelling units on a lot as an accessory use to a principal use.
  2. Base Standards Apply
    Except as specifically set forth in this section, the allowed uses, the dimensional requirements, height limits and general development standards of the underlying zoning district apply.
  3. Definition
    An Accessory Dwelling Unit (ADU) is a self-contained dwelling unit that is located on the same lot as another principal use. Accessory Dwelling Units may be detached, attached, or internal to the principal use. Only residential uses are permitted in Accessory Dwelling Units.
  4. Accessory Dwelling Unit Regulations
    In accordance with this section, an accessory dwelling unit shall conform with the following development regulations:
    1. An ADU shall be located on the same lot as a principal use and meet both of the following:
      1. The gross floor area of the accessory dwelling shall be less than the gross floor area of the total principal use; and
      2. Shall be affixed to or constructed on a permanent foundation and not be a manufactured home or moveable structure except as specified in Sec. 3.2.6.D.6. below;
    2. There shall be no more than one ADU on the same lot as a principal use unless it is located in a Frequent Transit Area as shown on the City’s Comprehensive Plan which would then allow for up to two ADUs on the same lot as a principal use. However in the Frequent Transit Area, only one ADU can be attached to the principal building. In the case of a townhouse development only one ADU is permitted per townhouse;
    3. It shall be accessed by a lockable external entrance;
    4. Ownership of an ADU shall not be transferred apart from its principal building;
    5. It shall meet all relevant standards and requirements of the UDO, provided however accessory dwelling units shall not be subject to Sections 6.7.1. and 6.7.2. with the exception of 6.7.2.B.
    6. An Accessory Dwelling Unit may be a Manufactured Home as defined in Article 12.2 if it meets all of the following:
      1. The predominant roofline shall have a pitch of 5:12 or greater.
      2. The eave projections of the roof must not be less than ten inches (excluding roof gutters) unless the roof pitch is 8:12 or greater.
      3. The minimum height of the first-story exterior wall must be at least seven feet, six inches.
      4. Materials used as exterior wall covering shall be of a non-reflective material.
      5. Foundation skirting shall comply with the requirements set forth in Section 4.5.3.D.
      6. The Manufactured Home is no greater than 600 square feet in gross floor area.
    7. Unless attached thereto by a common wall, an ADU must be separated by at least 6’ from any other building on the lot.
    8. All ADU entrances must be externally accessible by pedestrians from either the driveway, street and/or alley from which the lot takes access.
    9. Encroachments into setbacks are permitted pursuant to Section 1.5.4.D.
    10. Vertical encroachments are permitted pursuant to Sections 1.5.7.D.2. and 1.5.7.D.3.g.
  5. Description
    An Accessory Dwelling Unit (ADU) is a self-contained dwelling unit that is located on the same lot as a principal building that meets the regulations identified in Section 3.3.2. An ADU may be located above a garage. ADUs may be detached, attached, or internal to the principal building. Only residential uses are permitted in ADUs.
F. Districts Allowed In
RX-, OX-, NX-, CX
G. Building Specifications
G1 Gross Floor Area (max)1 800
H. Detached ADU Setbacks
H1 From primary street (min) Must be located at or behind the front wall of the principal building
H2 From side street (min) 10’
H3 From side lot line (min)2 5’
H4 From rear lot line (min)3 5’
H5 From alley (min) 4’without parking / 20’ with parking
I. Height
I1 Overall height (max) 26’

1Gross floor area shall include all conditioned space. Attached unconditioned space shall be included in the calculation of accessory structure floor area.
2For townhouse lots, H3 shall only apply to the side site boundary.
3For townhouse lots, H4 shall only apply to the rear site boundary.

Supplement Number
27