The use changes.

The use expands its gross floor area by 20% or more.

The use is destroyed and seeks to be reestablished.

The use is discontinued for a period of six months or longer and seeks to be reestablished.

Residential uses:

Hotel, motel, tourist home or boardinghouse: one parking space, plus one space for every guest room.

Dormitory, fraternity, sorority, nurses' home or hospital: one parking space, plus one space for every two beds.

Places of public assembly: one parking space for every five seats, or one parking space for every 100 square feet of floor area.

Business, professional and medical offices: one parking space, plus one space for every 200 square feet of office area.

Commercial and business: one parking space for every motor vehicle used directly in the business, plus one parking space for every 100 square feet of business area.

Restaurant, eating and drinking establishments: one parking space for every 100 square feet of floor area.

Industrial, wholesale, warehouse, storage, freight and trucking uses: one parking space for every motor vehicle used directly in the business, plus additional parking as required by the Planning Board.

Unspecified uses: as required by the Planning Board.

A parking space shall be not less than nine feet by 20 feet exclusive of accessways and driveways. A required driveway shall not be less than 20 feet clear in width, except for one- and two-family residential uses.

Off-street parking may be located off-site but must be within 500 feet of the site.

No nonresidential or multiple-family dwelling parking area shall be located within 10 feet of a side lot line.

To the greatest extent possible, all parking areas for nonresidential and multiple-family dwelling uses shall be located behind the facility and out of roadside view. Where parking areas must be located in side or in front yards adjacent to public streets, and where parking must be located adjacent to residential areas, appropriate buffering, landscaping or visual barriers shall be provided.

Landscaping shall be provided around parking areas which shall be designed to break up the visual impact of such areas. Plantings shall be designed to provide adequate site distances to vehicles entering and exiting the site. When large areas are to be paved, parking rows shall be designed with the landscaping interspaced within the paved area.

All parking areas for nonresidential and multiple-family dwelling uses shall be designed to allow vehicles to exit front first onto streets.

One parking area may contain required spaces for more than one use. The required spaces assigned to one use may not be credited to another use, except where the uses operate at different times. The applicant shall provide written evidence that the owner has granted permission for such shared parking.

All parking areas shall be surfaced with dust inhibiting materials acceptable to the Planning Board.

The Planning Board may require additional off-road parking and loading spaces for any use if it finds that the above-required minimum spaces are not sufficient.

Parking spaces for any number of separate uses may be combined in one parking lot, but the required space assigned to one use may not be assigned to another at the same time, except upon approval of the Planning Board.

All parking and loading areas in 1-3 Zones shall be located in either side or rear yards and shall be appropriately landscaped and screened from public view.