Improvement requirement: There is no pavement requirement for existing alleys not used for access.
Setback requirements: When an alley is not used for access to parking or loading spaces and is less than the minimum right of way width shown below a setback is required to allow for future widening of the alley. Setback requirements are specified in
SMC 23.53 of the Land Use Code. Generally, the setback is equal to half the difference between the existing right of way width and the required right of way width specified.
Minimum Right-of-Way and Pavement Width Requirements for Existing Alleys Used for Access
|Land Use Zone Category*
| L1, L2, NC1
| L3, L4, MR, HR, NC2, NC3
C1, C2, IG1, IG2, IB, IC, All Downtown Zones
* When an alley abuts lots in more than one land use zone category, the zone category with the most frontage on that block along both sides of the alley, excluding SF and LDT zones, determines the minimum width. If the categories have equal frontage, the one with the greater width requirement shall be used to determine the minimum alley width.
No protest agreement: A No-Protest Agreement for future alley improvements is also required if the alley is not improved.
Grading: All structures on the lot shall be designed to accommodate the approved grade of the future alley as shown on the Building Grade Sheet. More information on grading requirements.