A. 
General provision. All required off-street parking spaces shall be provided on the same lot with the building or use they serve, except as provided in the following Subsection B, Group facilities.
B. 
Group facilities. In any C or M District, required off-street parking spaces may be provided in group parking facilities designed to serve two or more buildings or uses on different lots, provided that:
(1) 
The total parking spaces in such group facility shall not be less than the sum of the requirements for the various uses computed separately.
(2) 
All required parking spaces shall be not more than 600 feet from the boundary of the lot on which buildings or uses are located.
C. 
Where an existing structure is converted, in whole or in part, to a nonresidential use requiring site plan approval, parking facilities relating to the nonresidential use shall, where feasible, be located in the rear of the structure. The Town Board shall make a determination of feasibility under this subsection after review and recommendation by the Planning Board, based upon the following considerations:
[Added 4-21-1999 by L.L. No. 2-1999]
(1) 
Compliance with area and maneuvering room standards established in the Boston Town Code;
(2) 
Compliance with applicable setback provisions;
(3) 
Circulation system requirements as established in § 97-13 of the Boston Town Code;
(4) 
Topographical limitations, where applicable;
(5) 
Interference with existing infrastructure;
(6) 
Drainage considerations;
(7) 
Adverse impacts on existing residences;
(8) 
Availability of alternative parking locations;
(9) 
Any other characteristics which the Board determines would have a material impact on the site plan.
A. 
In any R District:
(1) 
Enclosed off-street parking spaces shall be subject to the regulations for accessory buildings in Article XXV.
(2) 
No open off-street parking space shall be permitted in a required front yard or exterior side yard.
(3) 
No open off-street parking area for five or more motor vehicles shall be located within five feet of any side or rear lot line of an adjoining lot in any R District.
B. 
In any C or M District:
(1) 
Unless reduced by action of the Zoning Board of Appeals upon the favorable recommendation of the Town Planning Board, no open or enclosed off-street parking space shall be permitted within 20 feet of any street line; provided, however, that no action by the Board of Appeals shall allow such off-street parking space less than 10 feet distant from any street line.
(2) 
No open or enclosed off-street parking space shall be permitted within 10 feet of any side lot line or rear lot line of a lot used for residential purposes or in any R District.
All areas counted as required off-street parking areas shall be unobstructed and free of other uses, except off-street loading or unloading.
In any case where required off-street parking spaces are provided off-site in group facilities, such off-site parking spaces shall be subject to deed, lease or contract restrictions acceptable to the Town Attorney of the Town of Boston, binding the owner, his heirs or assigns to maintain the required number of spaces available through the life of such use.
All open off-street parking spaces shall be considered as automotive use areas and shall be subject to the requirements of Article XXIII, in addition to the provisions of this section.