Validation set: 

8.5.19. Non-Conforming Lots. A non-conforming lot is a lot which, at the time of 
 adoption of this By-law, does not conform to the minimum lot size or lot width 
requirements of the district in which it is located. The Planning & Zoning Board 
may permit the construction of a single-family residence on a non-conforming lot 
provided that such construction is in compliance with this By-law and the terms and 
conditions of any special permit thereunder. 8.5.20. Special Permits. The Planning & Zoning Board may grant a special permit to 
allow construction of multiple-family dwellings, commercial or industrial uses, or 
other uses, where authorized by this By-law.