|  | RULES AND REGULATIONS Regulatory Authority: Devens Enterprise Commission Agency Contact: Peter C. Lowitt Phone: 978.772.8831 ext 3313 Address: 33 Andrews Parkway, Devens, MA 01434 Massachusetts Register Number 1211 Effective Date: June 2012 | 
| 974 CMR 5.00 RESIDENTIAL 
5.05 Accessory Apartments 
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| Accessory apartments are permitted in single family dwellings. Accessory apartments may be located in the same structure as the principal dwelling or in combination with space for a permitted home occupation or business, a garage, or other allowed accessory use, or as a separate structure itself, provided that the total gross square feet of the accessory apartment, whether within the same structure or a separate one, is limited to 25% of the floor area of the principal dwelling. Dwellings with accessory apartments shall retain the appearance of single-family dwellings. An accessory apartment within the dwelling is a Level One permit, an accessory apartment in a detached structure is a Level Two permit. | 
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