Mill Creek City Zoning Code
CHAPTER 17
14 HDR – HIGH DENSITY RESIDENTIAL
(Legislative history: Ords. 91-262, 95-349 and 97-406)
§ 17.14.005 Purpose.
The purpose of this zone is to implement the high density residential designation of the comprehensive plan and land use map. It is intended to provide areas for affordable housing and related uses that are adjacent to commercial centers and transit facilities, and to move toward the city’s population allocations required under the Growth Management Act, Chapter 36.70A RCW.
(Ord. 2005-609 § 2; Ord. 2024-928 § 2 (Exh. A))
§ 17.14.010 Principal uses.
Principal uses are:
A.
Multi-unit dwellings;
B.
Boarding houses;
C.
Nursing homes, retirement, convalescent centers, and congregate residential;
D.
Adult family homes;
E.
Permanent supportive housing; and
F.
Transitional housing.
(Ord. 2005-609 § 2; Ord. 2024-928 § 2 (Exh. A))
§ 17.14.020 Secondary uses.
Secondary uses are:
A.
Accessory buildings that are subordinate to the principal building and are incidental to the use of the principal building on the same lot in accordance with MCMC § 17.22.050;
B.
Home occupations; and
C.
Day care centers.
D.
Family home childcare, in accordance with MCMC § 14.07.020.
(Ord. 2005-609 § 2; Ord. 2010-717 § 2 (Exh. B); Ord. 2022-884 § 2)
§ 17.14.030 Conditional uses.
Conditional uses shall be processed in accordance with Chapter 17.28 MCMC. Conditional uses are:
A.
Religious facilities;
B.
Schools;
C.
Public facilities/utilities and essential public facilities;
D.
Health care facilities that meet the following standards:
1.
The facility has direct access to a collector or arterial street;
2.
The maximum building height is the same as residential;
3.
Overnight care is not provided;
4.
Retail uses directly related to health care such as pharmacies and optical dispensaries as a secondary use;
E.
Accessory satellite signal transmitting and receiving antennas over four feet in diameter external to or attached to the exterior of any building; and
F.
Adult day care.
(Ord. 2005-609 § 2; Ord. 2009-702 § 2 (Exh. C); Ord. 2010-717 § 2 (Exh. B); Ord. 2019-850 § 8; Ord. 2024-928 § 2 (Exh. A))
§ 17.14.040 Review requirements.
All development in the HDR district shall be processed as either a preliminary plat or binding site plan in accordance with MCMC Title 16, Subdivisions and Plats.
(Ord. 2005-609 § 2; Ord. 2024-928 § 2 (Exh. A))
§ 17.14.050 Density.
A.
Minimum density: 13 dwelling units per acre.
B.
Maximum density: 24 dwelling units per acre.
(Ord. 2005-609 § 2; Ord. 2025-933 § 2 (Exh. A))
§ 17.14.060 Maximum lot coverage.
The maximum lot coverage shall be:
A.
Forty percent; or
B.
Fifty percent if parking is within the principal building.
(Ord. 2005-609 § 2)
§ 17.14.070 Maximum height.
The maximum height shall be 50 feet.
(Ord. 2005-609 § 2)
§ 17.14.080 Setbacks.
Setbacks shall be:
A.
Front yard: 10 feet from right-of-way or sidewalk (whichever is greater), or roadway buffer/cutting preserve, if applicable.
B.
Side yard: Total of 20 feet, no side less than five feet.
C.
Rear yard: 20 feet.
(Ord. 2005-609 § 2)
§ 17.14.085 Streetscape and roadway buffer/cutting preserves.
Streetscape design and roadway buffer/cutting preserve tracts adjacent to arterial and collector streets shall be provided in accordance with the city’s comprehensive plan, streetscape element. Roadway buffer/cutting preserves to be provided range from 50 feet from the edge of the right-of-way for residential uses to 35 feet for nonresidential uses.
(Ord. 2005-609 § 2)
§ 17.14.090 Project design.
Development within this zone district shall be designed in conformance with the design principles and standards set out in Chapter 17.34 MCMC, Design Review.
(Ord. 2005-609 § 2)
§ 17.14.100 Open space and recreation facilities.
Open space and recreation facility requirements are located in Chapters 16.12 and 17.22 MCMC.
(Ord. 2006-633 § 2)
