In light of the physical constraints within the subarea, it is the intent of the city to allow flexibility in site design and layout for residential uses. The reliance upon minimum building envelope standards and maximum densities instead of lot size standards is intended to facilitate flexible site design, as well as to encourage retention of unbuildable areas in common open space tracts as opposed to under individual private ownerships.
(1) Residential Uses. The following residential uses shall be permitted within the subarea in accordance with the density provisions of this section:
(c) Zero lot line developments;
(d) Residential condominiums;
(2) Conditional Uses. The following uses shall be conditional throughout the subarea, subject to the provisions of Chapter
18.72 WMC:
(a) Assisted living or congregate care facilities;
(e) Apartments, with a maximum of 60 units in any single complex, subject to design review.
(3) Densities. All densities referred to throughout these standards shall mean units per gross acre. Densities in the Woodburn Hill subarea shall be in accordance with Table 18.38-1, except as provided for in this subsection and subsection
(4) of this section.
(a) In situations where the physical environment on the site warrants such allocations, the density provisions of Table 18.38-1 may be modified by the director, subject to the design standards of WMC §
18.38.090, to meet the intent of this section. However, the maximum residential density on any single development site throughout the subarea shall not exceed 4.7 gross units per acre, and the overall number of units provided within the subarea shall not exceed 1,410.
(4) Density Transfers. Portions of sites encumbered by land identified as sensitive due to the presence of steep slopes, unstable land, historical or archaeological sites, wetlands and buffers, commons, land voluntarily or mandatorily set aside for open space or other permanent physical development limitations, but not including required or existing rights-of-way, as may be determined or approved by the director, may be eligible for transfer of density. The residential density otherwise able to be achieved on such gross acreage may be transferred to the remaining unencumbered land areas, subject to the following limitations:
(a) Intraparcel Transfer. The maximum number of units which can be transferred is limited to the number of whole units (fractions of units shall be rounded down) which would have been allowed on the unbuildable area described in this section, not to exceed 125 percent of the maximum density set forth in Table 18.38-1; provided, however, the maximum number of units shall be calculated based on the gross area of the site, minus any public road right-of-way, and the maximum density allowed will be dependent upon site characteristics and other factors.
(b) Interparcel Transfer. Density may be transferred between parcels or ownerships within the subarea; provided, that the overall maximum density for the subarea shall not be exceeded and that the maximum density allowed in any particular area, as set forth in Table 18.38-1, is not exceeded by more than 125 percent.
(i) The city shall maintain a record of the number of units preliminarily approved for construction within the subarea and allow interparcel density transfer of the unused density to subsequent development proposals, upon request by the applicant of those developments, and give priority for use of interparcel density on the basis of technically complete determination.
(5) Height. Height of structures shall be measured from the mean point of adjacent grade to the highest point of the structure, excluding architectural features such as chimneys. The maximum height within the subarea shall be 35 feet, except:
(a) Structures located above the 510-foot elevations shall include features that mitigate the potential impacts on the appearance of the ridgeline including, but not limited to:
(ii) Complex roof gables and articulations, or incorporation of dormers or other architectural features to eliminate monotonous roof lines;
(iii) Restriction of building location and type;
(iv) Incorporation of porches and other architectural features on southern building faces that eliminate monolithic blank walls;
(v) Planting of mature vegetation on the north side of structures to provide a natural silhouette backdrop. Such planting shall be selected to assure that at least 25 percent of their crown is above of the height of the structure at time of planting;
(vi) Other measures approved by the review authority.
(6) Medical marijuana cooperatives as defined in RCW
69.51A.250 are prohibited.
(7) Recreational marijuana producers, processors and retailers as defined in RCW
69.50.101 are prohibited.
Table 18.38-1 |
|---|
Degree of Slope1 | Maximum Density (units/acre)2,3 | Minimum Building Envelope4 | Setbacks (Minimum/Maximum) |
|---|
Area (s.f.) | Average Width | Average Depth | Front5 | Side/ St. Side | Rear |
|---|
Residence5, 6 | Garage7 |
|---|
0 – 5% | 8 | 1,800 | 20′ | 60′ | 10′/15′ | 18′ min. | 5′ | 5′ |
5 – 10% | 6 | 1,800 | 20′ | 60′ | 10′/15′ | 18′ min. | 5′ | 5′ |
10 – 15% | 58 | 2,800 | 40′ | 70′ | 10′/15′ | 18′ min. | 5′ | 5′ |
15 – 25% | 3.5 | 3,000 | 60′ | 50′ | 10′/15′ | 18′ min. | 5′ | 10′ |
25 – 40% | 2.5 | 3,500 | 70′ | 50′ | 10′/15′ | 18′ min. | 5′ | 10′ |
40 – 50% | 2 | 4,000 | 80′ | 50′ | 10′/15′ | 18′ min. | 5′ | 15′ |
50 – 100% | no build | | | | | | | |
1Degree of slope references existing natural topography of the site. |
2This density may be exceeded by a maximum of 125 percent with use of the density transfer of WMC § 18.38.040(2). Maximum densities listed in this table do not guarantee these densities throughout each parcel within the subarea. Physical or topographical restrictions may prohibit achieving these densities. |
3Increased densities may be warranted throughout the subarea regardless of the slope conditions, depending upon design, configuration and compatibility. Densities may be increased upon certification of suitability by a licensed geotechnical engineer of the area for construction. Densities on slopes of 15 percent shall not exceed eight units per acre and shall be subject to approval by the review authority. |
4Building envelope includes the buildable area of a lot unencumbered by setbacks, unbuildable slopes, irregular lot configuration, environmentally sensitive areas or other restrictions which may make the land unbuildable. |
5Minimum and maximum setbacks may decrease by one foot for each one percent of slope in excess of 10 percent to a minimum of six feet for the residence (not garage). Front porches that extend beyond the front face of the primary structure may intrude into front yard setbacks. However, no reduction in a setback or intrusion of a front porch may be permitted that will interfere with sight distance. |
6The front setback of the residence may be reduced by the same distance that the front of the garage is set back from the primary face of the residence, to a maximum reduction of five feet (10 feet rather than 15). |
7This minimum setback provision shall not apply to garages with entrance doors oriented perpendicular to the adjacent street to form a parking court. (There is to be 18 feet of parking area length inside of the back of the curb and/or sidewalk or planter strip; whichever is the farthest interior to the lot, in order for vehicles not to encroach either into a pedestrian way or roadway.) |
8Except as provided for in nonresidential development under WMC § 18.38.050. |
(Ord. 1253 § 1, 1997; Ord. 1421 § 1, 2001; Ord. 1520 § 1, 2005; Ord. 1758 § 1 (Exh. A), 2014; Ord. 1764 § 2 (Exh. A), 2014; Ord. 1807 § 2 (Exh. A), 2016; Ord. 1929 § 1 (Exh. A § 1), 2020)