23.84A.024
"L"
Seattle Municipal Code · Seattle Mun. Code § 23.84A.024
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"Laboratory, research and development" means a use in which research and experiments leading to the development of new products are conducted. This use may be associated with an institutional, clinical or commercial use. This use includes but is not limited to the operation of a laboratory subject to any level of biosafety containment standard described by the U.S. Department of Health and Human Services, Biosafety in Microbiological and Biomedical Laboratories , current edition. Space designed for this use typically includes such features as floor - to - floor ceiling heights of at least 14 feet to accommodate mechanical equipment, and laboratory benches plumbed for water service. "Land Use Information Bulletin" means an information distribution to the persons on a master distribution list as established and maintained by the Department. "Landmark housing TDR site." See "TDR site, Landmark housing." "Landmark structure" means a structure designated as a landmark pursuant to the Landmark Preservation Ordinance, Chapter 25.12 . "Landscape section" means a section of the right-of-way of a freeway, expressway, parkway or scenic route, at least one (1) side of which is improved by the planting, for other than the sole purpose of soil erosion control, of ornamental trees, shrubs, lawn or other vegetation, or at least one (1) side of which is endowed by nature with native trees and shrubs that are reasonably maintained, and which has been so designated by this Code. "Landscaping" means live planting materials, including but not limited to, trees, shrubs, vegetables, fruits, grass, vines, ground cover or other growing horticultural material. Landscaping may also include features intended to enhance a landscaped area, including water features, pathways or materials such as wood chips, stone, permeable paving or decorative rock. "Laundry, commercial." See "Commercial services, heavy" under "Sales and services, heavy." "Lecture and meeting halls." See "Theaters and spectator sports facilities" under "Entertainment." "Ledge" means a cantilevered or posted platform extending no more than eighteen (18) inches from a structure. "LEED" (Leadership in Energy & Environmental Design) means the U.S. Green Building Council's Green Building Rating System TM . LEED is a voluntary consensus-based national standard for developing high-performance, sustainable buildings. LEED provides standards for higher performance in the following categories: Sustainable Sites, Water Efficiency, Energy and Atmosphere, Materials and Resources, Indoor Environmental Quality, and Innovation and Design Process. "LEED-CS" (LEED for Core & Shell) means a standard for core and shell construction and covers base building elements, such as the structure, envelope and building level systems. LEED-CS recognizes the division between owner and tenant responsibility for design and construction of certain elements of the building. "LEED-NC" (LEED for New Construction) means a standard for new construction and major renovation projects. LEED-NC covers all building elements, including core and shell and interiors. LEED-NC was designed for commercial, institutional, high-rise residential, and mixed-use projects, but has also been applied to K-12 schools, industrial, laboratories, and many other building types. "LEED Silver rating" means a level of performance for a new structure that earns at least the minimum number of credits specified to achieve a "Silver" certification either for "LEED-NC" or for "LEED-CS," at the election of the applicant, according to the criteria in the U.S. Green Building Council's LEED Green Building Rating System, LEED-NC Version 2.2 and LEED-CS Pilot Version, copies of which are filed with the City Clerk in C.F. 307824, and incorporated in this section by reference. "Library." See "Institution." "Light manufacturing." See "Manufacturing." "Light rail transit facility." See "Rail transit facility" under "Transportation facility." "Light rail transit system." See "Rail transit facility" under "Transportation facility." "Live-work unit" means a structure or portion of a structure: (1) that combines a commercial or manufacturing activity that is allowed in the zone with a residential living space for the owner of the commercial or manufacturing business, or the owner's employee, and that person's household; (2) where the resident owner or employee of the business is responsible for the commercial or manufacturing activity performed; and (3) where the commercial or manufacturing activity conducted takes place subject to a valid business license associated with the premises. "Loading berth" means an off-street space for the temporary parking of a vehicle while loading or unloading merchandise or materials and that abuts on a street, alley or easement. "Lodging use" means a commercial use in which the primary activity is the provision of rooms to transients. Lodging uses include but are not limited to the following uses: 1. "Bed and breakfast" means a lodging use where rooms within a single dwelling unit are provided to transients by a resident operator for a fee by prearrangement on a daily or short-term basis. A breakfast and/or light snacks may be served to those renting rooms in the bed and breakfast. 2. "Hotel" means a lodging use located in a structure in which access to individual units is predominantly by means of common interior hallways, and in which a majority of the rooms are provided to transients for a fee on a daily or short-term basis. 3. "Motel" means a lodging use located in a structure in which access to individual units is predominantly by means of common exterior corridors, and in which a majority of the rooms are provided to transients on a daily or short-term basis, and in which off-street parking is provided on the lot. 4. "Short-term rental" means a lodging use that is not a bed and breakfast, hotel, or motel, in which a dwelling unit, or portion thereof, is offered or provided to a guest(s) by a short-term rental operator for a fee for fewer than 30 consecutive nights. A dwelling unit, or portion thereof, that is used by the same person for 30 or more consecutive nights is not a short-term rental. A dwelling unit, or portion thereof, that is operated by an organization or government entity that is registered as a charitable organization with the Secretary of State, State of Washington, and/or is classified by the Internal Revenue Service as a public charity or private foundation, and provides temporary housing to individuals who are being treated for trauma, injury, or disease, and/or their family members, is not a short-term rental. "Lot" means, except for the purposes of a TDR sending lot for Landmark TDR or housing TDR, a sending lot for South Downtown Historic TDR or South Downtown Historic TDP, and a sending lot for open space TDR, a parcel of land that qualifies for separate development or has been separately developed. A lot is the unit that the development standards of each zone are typically applied to. A lot shall abut upon and be accessible from a private or public street sufficiently improved for vehicle travel or abut upon and be accessible from an unobstructed permanent access easement. A lot may not be divided by a street or alley (Exhibit A for 23.84A.024 ). 1. For purposes of a TDR sending lot for Landmark TDR, "lot" means the parcel described in the ordinance approving controls for the sending lot. 2. For purposes of a sending lot for housing TDR, "lot" means the smallest parcel or combination of contiguous parcels, as described in the County real property records at any time after January 4, 1993, that contain the structure or structures that make the TDR eligible for transfer. 3. For purposes of a sending lot for South Downtown Historic TDR or South Downtown Historic TDP, "lot" means the smallest parcel or combination of contiguous parcels, as described in the County real property records at any time after March 31, 2011, that contain the contributing structure or structures that make the TDR or TDP eligible for transfer. 4. For purposes of a sending lot for open space TDR, the definition of lot in Section 23.49.017 applies. Exhibit A for 23.84A.024 : Lot Types "Lot area" means the total area of the horizontal plane within the lot lines of a lot. "Lot, corner" means a lot situated at the intersection of two (2) streets, or bounded on two (2) or more adjacent sides by street lot lines, provided that the angle of intersection of the street lot lines does not exceed one hundred thirty-five (135) degrees. "Lot coverage" means that portion of a lot occupied by structures, expressed as a percentage of the total lot area (Exhibit 23.84A.024 B). "Lot depth" means the horizontal distance between the front and rear lot lines. "Lot grade, existing" means the natural surface contour of a lot, as modified by minor adjustments to the surface of the lot in preparation for construction. For purposes of this definition, on a lot where excavation has occurred for previous development, the interpolated grade based on existing grade elevations at the lot lines may be considered the natural surface contour of the lot provided that when the lot is developed, that grade is restored from the lot lines up to the exterior walls of any new structure(s). Where an area in excess of two acres has been legally regraded, the resulting grade shall be considered the existing lot grade. "Lot, interior" means a lot other than a corner lot. "Lot, key" means the first lot to the rear of a reversed corner lot whether or not separated by an alley. "Lot line, alley" means a lot line that abuts upon an alley. "Lot line, front" means: 1. For a lot with frontage on a single street, the lot line separating the lot from the street; 2. For a through lot, all lot lines separating the lot from the streets that are parallel or within 15 degrees of parallel to each; 3. For a lot with frontage on more than one street other than a through lot, a lot line determined by the Director based on the existing pattern of lots and buildings on the block; and 4. For a lot with no street frontage: a. On a lot that has only one alley lot line, the alley lot line; b. On a lot that has more than one alley lot line, one alley lot line determined by the Director based on existing pattern of lots and buildings on the alleys; and c. On a lot that has no alley lot lines, a lot line chosen by the applicant, provided that the selected front lot line length is at least 50 percent of the width of the lot. "Lot line, rear" means a lot line that is opposite and most distant from the front lot line. "Lot line, side" means any lot line other than a front lot line or a rear lot line. "Lot line, side street" means a lot line, other than the front lot line, abutting upon a street. "Lot line, street" means a front lot line or a side street lot line. "Lot lines" means the property lines bounding a lot. "Lot, parent" means the initial lot from which unit lots are subdivided under Section 23.22.062 or Section 23.24.045 . "Lot, reversed corner" means a corner lot, the side street lot line of which is substantially a continuation of the front lot line of the lot to its rear, whether or not separated by an alley. "Lot, through" means a lot abutting on two (2) streets that are parallel or within fifteen (15) degrees of parallel with each other. "Lot, unit" means one of the individual divisions created from the subdivision of a parent lot pursuant to Section 23.22.062 or Section 23.24.045 . A unit lot is not a lot. "Lot, waterfront" means a lot or parcel any portion of which is offshore of or abuts upon the ordinary high water mark or mean high water mark and any other lot or parcel partially or entirely within the Shoreline District that is not separated from the water by a street, arterial, highway or railroad right-of-way, that was a legal right-of-way as of March 17, 1977, but does not include any legally dedicated right-of-way. "Lot width" means the mean horizontal distance between side lot lines measured at right angles to the lot depth. "Low-income housing." See "Housing, low-income." "Low-income unit." See "Unit, low-income." (Ord. 127376 , § 82, 2025; Ord. 126855 , § 71, 2023; Ord. 126682 , § 11, 2022; Ord. 125483 , § 5, 2017; Ord. 125272 , § 64, 2017; Ord. 124475, § 9, 2014; Ord. 123913, § 45, 2012; Ord. 123649, § 59, 2011; Ord. 123589, § 99, 2011; Ord. 123564, § 10, 2011; Ord. 123495, § 86, 2011; Ord. 123046, § 61, 2009; Ord. 122311 , § 100, 2006.)