(1) Except as specifically provided in this section, no person may engage in any activity that causes an increase in the extent of nonconformity of a nonconforming situation. In particular, physical alteration of structures or the placement of new structures on open land is unlawful if such activity results in:

(2) Subject to subsection (4) of this section, a nonconforming use may be extended throughout any portion of a completed building that, when the use was made nonconforming by this code, was manifestly designed or arranged to accommodate such use. However, a nonconforming use may not be extended to additional buildings or to land outside the original building.

(3) A nonconforming use of open land may not be extended to cover more land than was occupied by that use when it became nonconforming.

(4) The volume, intensity, or frequency of use of property where a nonconforming situation exists may be increased, and the equipment or processes used at a location where a nonconforming situation exists may be changed, if these or similar changes amount only to changes in the degree of activity rather than changes in kind and no violations of other requirements of SMC 17.25.170 through 17.25.220 occur.

(5) Notwithstanding subsection (1) of this section, any structure used for single-family detached residential purposes and maintained as a nonconforming use may be enlarged or replaced with a similar structure of a larger size, so long as the enlargement or replacement does not create new nonconformities or increase the extent of existing nonconformities

with respect to such matters as setback and parking requirements.

(6) Notwithstanding subsection (1) of this section, whenever: (a) there exists a lot with one or more structures on it, and (b) a change in use that does not involve any enlargement of a structure is proposed for such lot, and (c) the off-street parking or loading requirements of this code that would be applicable as a result of the proposed change cannot be satisfied on such lot because there is not sufficient area available on the lot that can practicably be used for off-street parking or loading, then the proposed use shall not be regarded as resulting in an impermissible extension or enlargement of a nonconforming situation. However, the applicant shall be required to comply with all applicable off-street parking and loading requirements that can be satisfied without acquiring additional land, and shall also be required to obtain satellite off-street parking if: (a) parking requirements cannot be satisfied on the lot with respect to which the permit is required; and (b) such off-street satellite parking is available within 500 feet of the site said satellite parking area is intended to serve, measured from property line to property line. If such off-street satellite parking is not reasonably available at the time the permit is granted, then the permit recipient shall be required to obtain it if and when it does become reasonably available. This requirement shall be a continuing condition of the permit. (Ord. 929 Ch. 6(Q)(6), 1995).