Title 17C Land Use Standards
Chapter 17C.110 Residential Zones
In the RA through RTF zones, housing types are limited to maintain the overall image and character of the city's residential neighborhoods. However, the standards allow options to increase housing variety and opportunities, and to promote affordable and energy-efficient housing. Other housing types, including multifamily units, are allowed in the higher density zones under the RMF and RHD categories.
The kinds of housing types allowed in the residential zones are stated in Table 17C.110-2.
RESIDENTIAL ZONE HOUSING TYPES ALLOWED
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P – Permitted
N – Not Permitted
CU – Conditional Use review required
RSF and RSF-C
Single-family Residence (detached)
Attached Single-family Residence 
Cottage Housing 
Housing on Transitional Sites 
Zero Lot Line 
Accessory Dwelling Unit (ADU) 
Detached ADU 
Manufactured Home 
Mobile Home Parks 
Single Room Occupancy (SRO)
See SMC 17C.330.100
Short Term Rentals 
 See SMC 17C.110.300 through 17C.110.360, Alternative Residential Development Standards.
 See chapter 17C.300 SMC, Accessory Dwelling Units.
 See chapter 17C.345 SMC, Manufactured Homes and Mobile Home Parks.
 See chapter 17C.316 SMC, Short Term Rentals.
Date Passed: Monday, January 29, 2018
Effective Date: Thursday, March 8, 2018
ORD C35575 Section 7