18.20.050 Development Standards for Residential Zones:
A. Purpose. This section establishes the site requirements and development standards for uses in the residential zones. The standards and rules are established to provide flexibility in project design, prevent fire danger, provide adequate access and circulation, reduce incompatibilities, and prevent overloading of infrastructure due to the impacts of development.
B. Explanation of Table. Development standards are listed down the left column of the table and the residential zones are identified across the top row. The matrix cells contain the requirements of each zone. The footnotes identify particular requirements applicable to a specific use, standard, or zone.
|
Development Standards |
R-1 |
R-2 |
R-3 |
R-4 |
|
Minimum lot size (in square feet)1 |
7,000 |
7,000 |
6,000 |
32,670 |
|
Minimum lot size for a corner lot (in square feet) |
7,700 |
7,700 |
6,600 |
32,670 |
|
Minimum lot size for a two-family dwelling (in square feet)1 |
---- |
8,000 |
6,000 |
---- |
|
Additional lot area per dwelling unit in excess of 2 dwelling units (in square feet) |
---- |
---- |
1,200 |
---- |
|
Minimum lot depth |
100' |
100' |
NS |
150' |
|
Minimum lot depth on an arterial |
120' |
120' |
120' |
150' |
|
Minimum lot width2 |
65' |
65' |
NS |
100' |
|
Minimum lot width, corner lot |
70' |
70' |
NS |
150' |
|
Minimum lot width for a two-family dwelling |
---- |
70' |
NS |
---- |
|
Minimum street frontage for flag lots |
20' |
20' |
20' |
40' |
|
Front yard and exterior side yard setback3 – garage |
25' |
25' |
20' |
25' |
|
Front yard and exterior side yard setback3 – living space |
20' |
20' |
15' |
25' |
|
Front yard and exterior side yard setback3 – porches, covered entryways, and similar unenclosed building projections |
15' |
15' |
15' |
25' |
|
Interior side yard setback3 (each side) |
||||
|
If lot is 65' wide or less |
5' |
5' |
5' |
20' |
|
If lot is more than 65' |
6' |
6' |
5' |
20' |
|
Rear yard setback3 |
25' |
25' |
5' |
25' |
|
Rear yard setback3, corner lot less than 70' in width |
10% of lot depth |
10% of lot depth |
5' |
---- |
|
Rear yard setback3, corner lot 70' or greater in width |
15% of lot depth |
15% of lot depth |
5' |
25' |
|
Setback from the ordinary high water mark of Moses Lake: See the City of Moses Lake Shoreline Master Program (SMP) |
See SMP |
See SMP |
See SMP |
See SMP |
|
Maximum lot coverage for multi-family structures |
---- |
---- |
50% |
---- |
|
Minimum open space for multi-family |
---- |
---- |
1,000 SF + 100 SF per unit6 |
---- |
|
Maximum height of primary structure7 |
30' 8 |
30' 8 |
40' 9 |
30' 11 |
|
Maximum height of detached accessory structure |
16' 10 |
16' 10 |
16' 10 |
35' 11 |
|
Minimum width of narrowest portion of main residential structure |
20' |
20' |
20' |
20' |
|
Maximum height of floor level above grade (single level residential structures) |
18" |
18" |
18" |
18" |
|
Minimum required number of covered12 parking spaces, in addition to off-street parking required in Chapter 18.54 |
1 |
1 |
0 |
1 |
NS = No Standard
Footnotes for Table 2:
1.Exceptions.
A. In the R-1 and R-2 Zones, lots platted prior to 1961 shall have a minimum lot size of six thousand (6,000) square feet.
B. In the R-1, R-2, and R-3 Zones, a building permit may be issued to a platted nonconforming lot that contains at least five thousand (5,000) square feet and otherwise meets the underlying performance standards of the zone in at least eighty percent (80%) of the minimum bulk dimensions of width, depth, and building setback line.
2.In the R-1 and R-2 Zones, lots platted prior to 1961 shall have a minimum lot width of sixty feet (60').
3.Setbacks.
A. Within the setback area shown in Table 2, no building or structure (as defined in Section 18.03.040) shall be allowed, except flagpoles, signage, fencing, slope stability structures, window wells, and open steps and platforms having no roof covering. Eaves, cornices, and awnings may project into the required setback no more than two feet (2').
B. The setbacks shown in the table are zoning setbacks. Larger setbacks may be required by the State Building Code, State Fire Code, sight distance requirements, or landscaping requirements (Chapter 18.57).
C. There shall be no side yard setback requirement for single-family dwelling units sharing a common wall or attachment when each dwelling is on its own lot of record.
D. To determine the interior side setback requirement in the R-1 and R-2 Zones, the lot width shall be measured at the front setback line for rectangular lots. For all other lot shapes, the average of the width at the front setback line and rear setback line shall be used to calculate the required interior side setback.
E. Within the setback area shown in Table 2, attached appurtenances such as, but not limited to, awnings, porch covers, and pergolas may encroach into the required rear yard setback no more than fifteen feet (15'). Any such attached appurtenance shall remain open and shall not be enclosed with walls for the purpose of creating habitable living space.
4. Reserved.
5. Repealed by Ord. 2929.
6.Open space shall not include parking areas or driveways and shall be usable outdoor area for recreation and landscaping. The smallest dimension of the open space area shall be not less than fifteen feet (15').
7.The following structures are exempt from the building height restriction and may be erected higher than thirty feet (30') so long as the structure permitted is a distance from all property lines not less than its height and it meets any additional conditions as noted:
A. Church spires, steeples, and bell towers. Other portions of a church building may exceed thirty feet (30') if addressed as part of the conditional use permit for the building.
B. Flag poles.
C. Noncommercial antennas and towers related to wireless transmissions and relays, if permitted by law, so long as those towers are no higher than necessary to reasonably accommodate the use including the use of the shortest structure possible and crank-up or telescoping devices are used whenever possible.
D. Water reservoirs.
8.In the R-1 and R-2 Zones, a primary structure may be constructed up to thirty-five feet (35') in height under the following conditions:
A. The interior side yard setback must be at least ten feet (10') with one (1) additional foot of setback for each additional foot of building height over thirty feet (30') to a maximum required setback of fifteen feet (15').
B. A minimum lot size of twelve thousand five hundred (12,500) square feet.
9.In the R-3 Zone a primary structure may be constructed up to forty feet (40') in height under the following conditions:
A. The rear yard and interior side yard setback must be at least ten feet (10') with one (1) additional foot of setback for each additional foot of building height over thirty feet (30') to a maximum required setback of fifteen feet (15').
B. A minimum lot size of twelve thousand five hundred (12,500) square feet.
10.A detached accessory building in a residential zone may exceed sixteen feet (16') in height under the following conditions:
A. Minimum lot size of fifteen thousand (15,000) square feet.
B. Minimum lot width of eighty feet (80').
C. Accessory building, primary structure, and impervious surfaces combined do not cover more than fifty percent (50%) of lot.
D. Any building over sixteen feet (16') in height must be consistent with the exterior of the primary structure in architectural style, siding, paint, roof pitch, and roofing material. If the primary structure has multiple roof pitches, the accessory building need only match one (1) of them.
E. Interior side yard and rear yard setbacks as required by current code plus one (1) additional foot for each additional foot in height over sixteen feet (16').
F. Building to be no taller than twenty-six feet (26') or the height of the house, whichever is less.
G. Blank wall facades created by an accessory building over sixteen feet (16') in overall height and twenty-four feet (24') in width or length will require one (1) window, with one (1) additional window required for each additional twelve feet (12') in width or length. Window trim shall match the window trim on the front of the house.
11.In the R-4 Zone, a primary or accessory structure may be constructed up to thirty-five feet (35') when the interior side yard setback is increased by one foot (1') of setback for each additional foot of building height over thirty feet (30').
12.In a garage or carport constructed to the standards of the State Building Code.
(Ord. 2929, 8/13/19; Ord. 2888, 1/9/18; Ord. 2721, 7/8/14; Ord. 2651, 7/24/12; Ord. 2510, 8/11/09; Ord. 2409, 8/12/08; Ord. 2144, 12/9/03)