Notwithstanding anything to the contrary in this Zoning Bylaw, the dimensional requirements applicable in the OSGOD are as follows:
40R Overlay Subdistricts
Dimensional Requirements
Mixed-Use Residential District
Mixed-Use Commercial District
Business Opportunity Zone
Minimum lot area
N/A
N/A
1 acre to 15 acres maximum
Minimum lot frontage on a public way
N/A
N/A
N/A
Maximum Building height
55 feet
55 feet
55 feet
Minimum front setback1
10 feet minimum; 25 feet maximum
0 feet minimum; 15 feet maximum
0 feet minimum; 10 feet maximum
Minimum rear yard setback
15 feet; 25 feet maximum
No required setback
No required setback
Minimum side yard setback
5 feet if lot line is on a street; 3 feet minimum; 10 feet maximum if adjacent to another lot line
No required setback
No required setback
Minimum Open Space
20%
15%
15%
Allowable Dwelling Units/acre2
20
20
Not allowed
Minimum setback between principal Buildings
0 feet minimum; 20 feet maximum
0 feet minimum; 20 feet maximum
0 feet minimum; 20 feet maximum
Minimum setback between either (a) accessory Buildings, or (b) principal Buildings and accessory Buildings
0 feet minimum; 25 feet maximum
0 feet minimum; 5 feet maximum
0 feet minimum; 5 feet maximum
Multiple Buildings on 1 lot
Allowed
Allowed
Allowed
Floor Area Ratio (FAR)
0.70:1
0.65:1
0.90:1
Lot Coverage
70%
90%
90%
Notes:
1.
Refer to § 195-17.28.
2.
"Allowable Dwelling Units per acre" shall mean the maximum number of Dwelling Units per acre averaged over the entire Residential Mixed Use Overlay District.
A. 
A front yard setback of 50 feet for property within the OSGOD shall apply only to front yards abutting Route 125 (Osgood Street). There shall be no front yard setback requirement unless specified in the Subdistrict.
B. 
Open Space shall be "usable Open Space," which is defined as the part or parts of land within the OSGOD which are reserved for permanent Open Space or passive recreation Use. This space shall exclude parking areas, but include required setbacks and walkways. The usable Open Space shall be open and unobstructed to the sky. Trees, planting, arbors, flagpoles, sculptures, fountains, outdoor open-air, passive/active recreational facilities, such items as streetscape elements (lights, planters, benches, etc.), outdoor areas devoted to dining, cafe or similar Uses, and decorative surface treatments for sidewalks and other hard surfaces (such as pavers, cobblestones or concrete surface treatments designed to resemble pavers or cobblestones), and similar objects shall not be considered obstructions. No more than 25% of the total amount of required usable Open Space shall be "wetland" as defined by the requirements of MGL c. 131, § 40, and the Town's Wetlands Bylaw.[1]
[1]
Editor's Note: See Ch. 190, Wetlands Protection.