District Standards—Density and Dimensions | Zoning Districts
specific requirements applicable either to a specific use or zone. A blank box indicates that there are no specific requirements. If more than one standard appears in a cell, each standard will be subject to any applicable parenthetical footnote following the standard.
C. Site Planning Standards—Residential zones
Residential Zones
RESIDENTIAL ZONES
STANDARDS
R-1
R-4
R-6
R-8
R-12
R-18
DENSITY & LOT DIMENSIONS
Maximum Density, DU/Acre
1 du/ac
4 du/ac (2)
6 du/ac
8 du/ac
12 du/ac
18 du/ac
Minimum Density (1)(4)
85%
80%
75%
Minimun Lot Width
35’
30’
30’
30’
30’
30’
SITE AND STRUCTURE DESIGN Maximum Residential Floor to Area Ratio (FAR) - Detached alley accessed garages are exempt Single-Family 50% 50% 50%
50%
ADU
Exempt
Exempt
Exempt
Exempt
Multifamily
65% 30%
65%
65%
65% 75%
Impervious Coverage Maximum
85%
85%
Yard Area Minimum
45% 40% 30%
35% 50% 30%
Lot Coverage Maximum (6) Front Yard Setback Landscaping Minimum
DRIVEWAYS (MEASURED AT THE EDGE OF THE STREET RIGHT-OF-WAY, NOT APPLICABLE FOR DRIVEWAYS FROM ALLEYS) AND PARKING Driveway Width Maximum 30% of parcel width, up to 20’ 30% of parcel width, up to 20’ 30% of parcel width, up to 20’ 30% of parcel width, up to 20’ Driveway Width Minimum 12’ 12’ 12’ 12’ Driveway Length Minimum to Required Spaces from Street Property Line 20’ 20’ 20’ 20’
Effective | January 1, 2022
Title 21: Sammamish Development Code | 199
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