The maximum allowable residential density per net usable acre in the R-1A zone, which density shall exclude streets, alleys, and other rights-of-way and sites not used for residential purposes, shall be dictated by the degree of influence on the project site by critical area considerations in accordance with the criteria herein.
A.
Net residential densities on sites with recognized erosion and landslide potential in accordance with DPMC § 18.70.110 shall be:
B.
For sites subject to flooding potential in accordance with DPMC § 18.70.100, and/or subject to shoreline management requirements in accordance with DPMC § 18.70.105, and/or influenced by wetland resources in accordance with DPMC § 18.70.130, net residential densities shall be predicated upon the buffer designations set forth in DPMC § 18.70.140 as follows:
C.
Where a combination of critical area considerations influence a particular development site, the density of development shall adhere to the most restrictive provisions of this section.
D.
Where any applicable portion of this or any other title or section imposes a greater restriction or regulation upon buildings, structures, and/or uses, than are imposed by this section of this title, the most restrictive provisions shall apply.
E.
Each lot or parcel shall have a minimum width at the fronting street property line of 60 feet on a public street or highway.
F.
The maximum site coverage for all buildings and structures, driveways, and similar impervious surfaces and other disturbed surfaces shall be as follows:
G.
Any owner of a lot, tract, or parcel of less than the minimum sizes set forth in this section and equal to or greater than 5,000 square feet who acquired his or her interest prior to the effective date of the ordinance codified in this chapter may be granted a building permit authorizing construction on his or her lot, parcel, or tract, provided the total of the area of all buildings and structures and driveways and similar impervious surfaces and other disturbed areas on the property does not exceed 40 percent of the area of the lot, parcel, or tract.
(Ord. 394 § 2.14.08, 1981; Ord. 583 § 16, 1990; Ord. 722 § 74, 1998)