A. Improvement of the adjacent public frontage is required as provided by this section for new development within the Pilchuck District.
B. Unless one or more of the exceptions specified by this section apply, public frontage improvements shall be provided for the area between the centerline of the adjacent right-of-way and the margin, edge, or extent of the right-of-way contiguous to the site boundary.
C. The City Engineer may approve modifications to the street design sections in this chapter provided it can be shown that the proposed alternative street design provides functional equivalence to the standard street section and satisfies or enhances the streetscape environment.
D. Public frontage construction exceptions:
1. Where the value of the proposed development is less than 75 percent of the assessed value of existing improvements on the site according to the records of the Snohomish County Assessor or where the existing floor area of a structure will not increase more than 20 percent, no public frontage construction or improvements are required.
2. For new development within the Neighborhood Single Family and Neighborhood Townhouse zones:
a. For the construction of one detached single-family dwelling, a five-foot wide concrete sidewalk shall be constructed along all frontages if no sidewalk exists or if the existing sidewalk does not meet adopted engineering standards.
b. For sites that include a corner lot and have less than 200 linear feet of frontage, and for sites that include no corner lot and have less than 100 linear feet of frontage, a five-foot wide concrete sidewalk shall be constructed along all frontages if no sidewalk exists or if the existing sidewalk does not meet adopted engineering standards.
3. For new development within the Neighborhood Center and Neighborhood Civic zones:
a. Except as provided in (b), for sites that include a corner lot and have less than 200 linear feet of frontage, and for sites that include no corner lot and have less than 100 linear feet of frontage, frontage improvements shall be constructed from the existing curb to the frontage line. Dimensional requirements for sidewalks and other improvements may be modified based upon the available right-of-way between the existing curb and the frontage line.
b. Frontage construction exceptions shall not apply to development of buildings in excess of three stories.