23.45.504
Permitted and prohibited uses
Seattle Municipal Code · Seattle Mun. Code § 23.45.504
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A. All uses are permitted outright, prohibited, or permitted as a conditional use according to Table A for 23.45.504 and this Section 23.45.504 . Uses not referred to in Table A for 23.45.504 are prohibited, unless otherwise indicated in this Chapter 23.45 or Chapters 23.51A , 23.51B , or 23.57 . Communication utilities and accessory communication devices, except as exempted in Section 23.57.002 , are subject to this Chapter 23.45 and Chapter 23.57 . Public facilities are subject to Section 23.51A.004 . B. All permitted uses are allowed as a principal use or as an accessory use, unless otherwise indicated in this Chapter 23.45 . Table A for 23.45.504 Permitted and prohibited uses Uses Permitted and prohibited uses by zone LR1, LR2, and LR3 MR and HR A. All residential uses P P B. Institutions P/CU 1 P/CU 1 C. Uses not otherwise permitted in existing or former public schools Permitted pursuant to procedures established in Chapter 23.78 Permitted pursuant to procedures established in Chapter 23.78 D. Park and ride facilities D.1. Park and ride facilities on surface parking lots X/CU 2 X/CU 2 D.2. Park and ride facilities in parking garages X/P 3 X/P 3 E. Parks and open space uses P P F. Ground-floor commercial uses RC/P 4 RC/P 5 G. Medical service uses other than permitted ground-floor commercial uses P/X 6 P/CU/X 6 H. Uses not otherwise permitted in Landmark structures CU CU I. Cemeteries P/X 7 P/X 7 J. Community gardens P P K. Parking, flexible-use X/P 8 P 8 L. Heat recovery incinerators CU CU M. Human service uses P P N. All other uses X X Key to Table A for 23.45.504 P = Permitted outright CU = Permitted as an administrative conditional use RC = Permitted in areas zoned Residential Commercial (RC), and subject to the provisions of the RC zone, Chapter 23.46 X = Prohibited Footnotes to Table A for 23.45.504 1 Institutions meeting development standards including but not limited to the standards in Section 23.45.570 are permitted outright; all others are administrative conditional uses pursuant to Section 23.45.506 . The provisions of this Chapter 23.45 shall apply to Major Institution uses as provided in Chapter 23.69 . 2 Prohibited in Station Area Overlay Districts (SAODs); otherwise, permitted as an administrative conditional use pursuant to Section 23.45.506 on surface parking existing as of January 1, 2017. 3 Prohibited in LR1 and LR2 zones, including LR1/RC and LR2/RC. Permitted outright in LR3, MR, HR, and LR3/RC zones, except prohibited in a SAOD. 4 For lots located in a zone that does not include an RC designation, ground-floor commercial uses are allowed if they meet the requirements of Section 23.42.055 and Chapter 23.46 or the standards of subsection 23.45.504.D. 5 For lots located in a zone that does not include an RC designation, ground-floor commercial uses are allowed if they meet the standards of subsection 23.45.504.E and Section 23.45.532 . 6 Subject to subsections 23.45.504.G and 23.45.506.F. 7 Subject to subsection 23.45.504.F. 8 Prohibited in LR1 and LR2 zones. Permitted outright in all other multifamily zones as surface parking on surface parking lots existing as of January 1, 2017; permitted outright in garages; subject to Section 23.54.026 . C. Accessory uses. The following accessory uses are permitted in all multifamily zones, subject to Section 23.45.545 , if applicable: 1. Private garages and carports; 2. Private, permanent swimming pools, hot tubs, and other similar uses; 3. Solar collectors, including solar greenhouses; 4. Piers and floats, provided they comply with Chapter 23.60A ; 5. Uses accessory to parks and playgrounds, pursuant to Section 23.45.578 ; 6. Bed and breakfasts in a dwelling unit that is at least five years old, provided they comply with subsection 23.45.504.I; 7. Recycling collection stations; 8. Urban farms with planting area not more than 4,000 square feet. Urban farms with greater than 4,000 square feet of planting area may be allowed as an administrative conditional use to any use permitted outright or as a conditional use. The Director may grant, condition, or deny a conditional use permit in accordance with subsection 23.42.051.B; and 9. Accessory dwelling units provided they comply with Section 23.42.022 . D. Ground-floor commercial use in Lowrise zones without an RC suffix are allowed if they comply with the following: 1. The commercial use is limited to the following: a. Food processing and craft work; b. General sales and services; and c. Restaurants. 2. The commercial uses do not occupy more than 2,500 square feet of gross floor area. 3. The commercial use is permitted only on or below the ground floor of a structure. 4. Vents for venting of odors, vapors, smoke, gas and fumes, and exterior heat exchangers and other similar devices (e.g., related to ventilation, air conditioning, or refrigeration) shall be at least 10 feet above finished sidewalk grade and directed away to the extent possible from residential uses within 50 feet of the vent. 5. Drive-in businesses are prohibited as a principal or accessory use. 6. Outdoor sales of food or beverages must be located at least 50 feet from adjacent lots. 7. Outdoor service of food or beverages must be located at least 50 feet from adjacent lots. 8. Businesses may not be open between the hours of 10 p.m. and 6 a.m. E. Ground-floor commercial use in Midrise and Highrise zones without an RC suffix are allowed if they comply with the following: 1. Drive-in businesses are prohibited as either a principal or accessory use. 2. The commercial use is limited to the following: a. Business support services; b. Food processing and craft work; c. General sales and services; d. Medical services; e. Offices; f. Restaurants; and g. Live-work units with one of the uses permitted in this subsection 23.45.504.E as the permitted commercial use. 3. The ground-floor commercial uses meet the requirements of Section 23.45.532 . F. Existing cemeteries are permitted to continue in use. New cemeteries are prohibited and existing cemeteries are prohibited from expanding. For purposes of this Section 23.45.504 , a change in a cemetery boundary is not considered an expansion in size and is permitted provided that: 1. The change does not increase the net land area occupied by the cemetery; 2. The land being added to the cemetery is contiguous to the existing cemetery and is not separated from the existing cemetery by a public street or alley whether or not improved; and 3. The use of the land being added to the cemetery will not result in the loss of housing. G. Except as provided in subsections 23.45.504.G.1 and 23.45.504.G.2, medical service uses other than permitted ground-floor commercial uses are prohibited. 1. Medical service uses in HR zones may be permitted as administrative conditional uses pursuant to subsection 23.45.506.F. 2. Medical service uses meeting the development standards for institutions are permitted outright on property conveyed by a deed from the City that, at the time of conveyance, restricted the property's use to a health care or health-related facility. H. Fences and free-standing walls of utility services uses shall be set back from the street lot line by an average of 7 feet and be no less than 5 feet from the street lot line at any point. Landscaping shall be provided between the fence or wall and the street lot line. The Director may reduce this setback after finding that the reduced setback will not significantly increase project impacts, including but not limited to noise, odor, and the scale of the structure in relation to nearby buildings. Acceptable methods to reduce fence or wall impacts include changes in the height, design, or construction of the fence or wall, including the use of materials, architectural detailing, artwork, vegetated trellises, decorative fencing, or similar features to provide visual interest facing the street lot line. Fences and walls may obstruct or allow views to the interior of a site. Where site dimensions and conditions allow, applicants are encouraged to provide both a landscaped setback between the fence or wall and the right-of-way, and a fence or wall that provides visual interest facing the street lot line, through the height, design, or construction of the fence or wall, including the use of materials, architectural detailing, artwork, vegetated trellises, decorative fencing, or similar features. I. Bed and breakfast uses. A bed and breakfast use may be operated in a principal dwelling unit or an accessory dwelling unit under the following conditions: 1. The bed and breakfast use has a valid business license tax certificate issued by the Department of Finance and Administrative Services; 2. The bed and breakfast use is operated by the primary resident of the dwelling unit where the bed and breakfast is located or the resident operator; and 3. There is no evidence of a bed and breakfast use visible from the exterior of the dwelling unit other than a sign permitted by subsection 23.55.022.D.1. (Ord. 127376 , § 33, 2025; Ord. 127098 , § 2, 2024; Ord. 126626 , § 2, 2022; Ord. 126384 , § 5, 2021; Ord. 125558 , § 6, 2018; Ord. 124843 , § 18, 2015; Ord. 124608 , § 5, 2014; Ord. 123939, § 7, 2012; Ord. 123547, § 3, 2011; Ord. 123495, § 24, 2011; Ord. 123378, § 11, 2010; Ord. 123209, § 17, 2009.)