PublicWorksandBuildings | DevelopmentStandards—InterimStreetDesignStandards
Sammamish Development Code
STREET IMPACT FEE RATES PER UNIT OF DEVELOPMENT
ITE Code 1.
ITE Land Use Category 1.
ITE Trip Rate 2.
Percent New Trips 3.
Trip Length Factor 4.
Net New Trips per Development Unit
Impact Fee per Unit @ $14,063.63
Impact Fee per Trip
942 Auto Care 944 Gas Station 945 Gas Station w/
3.38
30% 14% 14%
0.29 0.29 0.29
0.294 0.563 0.543
4.14
per Sq. Ft.
13.86 13.38
7,913.83 7,639.76
per VSP per VSP
Convenience Market
946 Gas Station w/
13.33
14%
0.29
0.541
7,611.21
per VSP
Convenience Market and Car Wash
947 Self-Serve Car Wash
5.54
14%
0.29
0.225
3,163.25
per VSP
1. Institute of Transportation Engineers, Trip Generation (7th Edition).
2. Trip generation rate per development unit, for p.m. peak hour of the adjacent street traffic (4:00 – 6:00 p.m.
Note: Sq. Ft. rate expressed per 1,000 SF.
3. Omits linked/diverted and pass-by trips, per Trip Generation Handbook: an ITE Recommended Practice, March, 2001.
4. Average trip length relative to single-family trip.
5. DU = dwelling unit, Sq. Ft. = square feet, VSP = vehicle servicing position.
If an applicant proposes a land use that is not identified above, the impact fee shall be an amount equal to $14,063.63 for each p.m. peak hour trip generated, adjusted for trip length and percentage of new trips using methods and data comparable to those in the street study.
590 | Title 21: Sammamish Development Code
Effective | January 1, 2022
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