The townhouse subdivision type is intended to provide a development option with the following features:
(A) 
Land use: 100 percent residential, in the form of townhouses.
(B) 
Applicability: residential subdivisions involving townhouses including all sizes that may or may not require new streets.
(C) 
Pedestrian Network.
(1) 
Safe, efficient, and highly accessible pedestrian circulation within the subdivision.
(2) 
Safe, efficient, and easy access to perimeter streets.
(D) 
Vehicular Network.
(1) 
Creation of grid-like street and alley system that allows for maximum connectivity to adjacent neighborhoods and nonresidential activity centers.
(2) 
Frequent use of alleys and garage access via alleys.
(3) 
Short blocks.
(4) 
Small radius corners.
(E) 
Site Feature Preservation.
(1) 
Strive to save existing quality tree stands.
(Ord. 1746-2023; Ord. 1352-2010; Ord. 1286-2008; UDO § 6.12)
(A) 
Base zoning: R4 and R5.
(B) 
Minimum parent tract: no minimum.
(C) 
Maximum parent tract: no maximum.
(D) 
Special Qualifications.
(1) 
Subdivision shall be designed around pedestrian-scale streetscape featuring narrow street profiles, on-street parking, building forward orientation, short blocks, and decorative street lighting.
(Ord. 1746-2023; Ord. 1352-2010; Ord. 1286-2008; UDO § 6.13)
The intensity and density bonus listed in the table below preempts the corresponding development standards listed for each zoning district in Division II of this title, Zoning Districts, when a subdivision is designed and implemented using the anti-monotony standard in Chapter 18.156 AMC, Design Standards.
Only the zoning districts shown in the table below are applicable for an intensity and/or density bonus.
Townhouse Subdivision Intensity and Density Bonus for Anti-Monotony Compliance
Zoning District
R4
R5
Lot Standards
Min. Lot Area
2,200 sq. ft.
2,200 sq. ft.
Min. Average Lot Area
2,600 sq. ft.
2,600 sq. ft.
Min. Lot Width
20 ft.
20 ft.
Min. Average Lot Width
26 ft.
26 ft.
Setback Standards
Min. Front Setback
24 ft.
20 ft.
Min. Side Setback
0 ft.
0 ft.
Min. Rear Setback
20 ft.
20 ft.
Min. Building Separation*
30 ft.
30 ft.
Other Standards
Max. Lot Coverage
50%
70%
Min. Dwelling Unit Size
1,200 sq. ft.
1,000 sq. ft.
Min. Average Dwelling Unit Size
1,400 sq. ft.
1,200 sq. ft.
Maximum Density
7 du/acre
9 du/acre
Notes:
* Separation from another block of townhouses, not each individual unit.
(Ord. 1746-2023; Ord. 1352-2010; Ord. 1286-2008; UDO § 6.14)
(A) 
Required open space: 20 percent.
(B) 
Minimum perimeter landscaping: 25 feet along perimeter streets; 10 feet along all other perimeters; zero feet if abutting another TN or a TD subdivision.
(C) 
Minimum block length: 200 feet.
(D) 
Maximum block length: 660 feet.
(E) 
Average block length: between 300 and 500 feet.
(F) 
Cul-de-sac length: cul-de-sacs not permitted.
(G) 
Minimum ROW on local streets: 60 feet.
(H) 
Design speed: 20 to 30 miles per hour.
(I) 
Minimum street width: 38 feet.
(J) 
Curb: vertical curb required.
(K) 
On-street parking: required on both sides of street.
(L) 
Minimum tree plot width: five feet.
(M) 
Minimum Sidewalk/Sidepath Width.
(1) 
Five-foot sidewalks/sidepaths along both sides of streets. If the sidewalk/sidepath is curb-faced, the sidewalk width shall be six feet.
(2) 
All joints shall be saw-cut.
(Ord. 1746-2023; Ord. 1352-2010; Ord. 1286-2008; UDO § 6.15)
(A) 
Development name: AMC § 18.156.040.
(B) 
Dedication of public improvement: AMC § 18.156.050.
(C) 
Easement: AMC § 18.156.060.
(D) 
Entryway feature: AMC § 18.156.070.
(E) 
Erosion control: AMC § 18.156.080.
(F) 
Floodplain: AMC § 18.156.090.
(G) 
Incentive: AMC § 18.156.100.
(H) 
Lot establishment: AMC § 18.156.120.
(I) 
Monument and marker: AMC § 18.156.150.
(J) 
Open space: AMC § 18.156.160.
(K) 
Owners' association: AMC § 18.156.170.
(L) 
Pedestrian network: AMC § 18.156.180.
(M) 
Perimeter landscaping: AMC § 18.156.190.
(N) 
Prerequisite standards: AMC § 18.156.200.
(O) 
Stormwater standards: AMC § 18.156.210.
(P) 
Street and access: AMC § 18.156.220, § 18.156.230, § 18.156.240, § 18.156.250, § 18.156.270 and § 18.156.290.
(Q) 
Street lighting: AMC § 18.156.310.
(R) 
Surety: AMC § 18.156.330.
(S) 
Utility standards: AMC § 18.156.340.
(Ord. 1746-2023; Ord. 1352-2010; Ord. 1286-2008; UDO § 6.15)