18.31.040 Lots.
A. All lots shall meet the lot area and width requirements set forth in the applicable zone, except that for parcels created prior to June 1, 2009, the following standards shall apply. For any residentially zoned parcel of land created prior to June 1, 2009, with an area and/or a width or depth less than that prescribed for a lot in any residential zone, the fact that the parcel of land does not meet the area and/or width requirements as set forth in this title shall not prohibit the property from being utilized for single-family residential purposes; provided, that all other regulations of this title are complied with.
1. For single-family homes on substandard lots, the following special provisions for lot coverage and setbacks may apply; provided, that the requirements for access, utility infrastructure, and minimum sight distance as provided for in the city design construction standards, and the requirements for private utilities, can be met:
a. Lot Coverage. Lot coverage may be determined by using the following formula:
(A/B) * C = D(%)
A = Lot area required by zoning code.
C = Percentage of lot coverage allowed by zoning code.
D = Percentage of lot coverage allowed for the substandard lot.
In no case shall the lot coverage exceed 60 percent, unless otherwise allowed by this title.
b. Front and Rear Setbacks. Either the front or rear setback may be determined by using the following formula:
(A/B) * C = D
B = Lot area required by zoning code.
C = Front or rear setback required by zoning code.
D = Front or rear setback allowed for the substandard lot.
In no case shall the front or rear setback be less than 10 feet, unless otherwise allowed by this title.
c. Side Setbacks. Side setbacks may be determined by using the following formula:
(A/B) * C = D
A = Width of the existing lot.
B = Lot width required by zoning code.
C = Side setback required by zoning code.
D = Side setback allowed for the substandard lot.
In no case shall the interior side setback be less than five feet or the street side setback less than 10 feet, unless otherwise allowed by this title.
B. Lots created by the King County assessor’s office shall not be considered as building lots or lots that can be further subdivided unless in accordance with this title and land division ordinance, except those lots created prior to August 24, 1968, which was the adoption date of the previous subdivision ordinance, No. 2204. See ACC 17.04.220 for definition of “lot of record.”
C. Lots created by the Pierce County assessor’s office shall not be considered as building lots or lots that can be further subdivided unless in accordance with this title and land division ordinance, except those lots legally created prior to any land being annexed to the city of Auburn. See ACC 17.04.220 for definition of “lot of record.” (Ord. 6245 § 15, 2009.)