A. 
Building. All buildings in any district shall meet the minimum requirements set forth in this article unless otherwise expressly provided by this bylaw or by MGL c. 40A, § 6.
B. 
Lot change. No lot shall be created nor shall an existing lot be changed in size or shape except through a public taking, or except where otherwise permitted herein, so as to result in violation of the requirements set forth in these intensity of use regulations.
A. 
The minimum size for lots in all districts shall be one acre.
B. 
No part or portion of any lot which is determined by the Conservation Commission to be a coastal or freshwater wetland, as defined by the Wetlands Protection Act (MGL c. 131, § 40) and the regulations promulgated thereunder (310 CMR 10.00), shall be used in determining minimum lot size as required herein, except that this subsection shall not apply to any lot lawfully laid out by plan or deed duly recorded, as defined in MGL c. 41, § 81L, prior to the effective date of this subsection, to any lot shown on a plan endorsed, prior to the effective date of this subsection, with the words, "Approval under the Subdivision Control Law not required" or words of similar import, pursuant to MGL c. 41, § 81P, or to any lot shown on a definitive plan endorsed with the words "Approved under the Subdivision Control Law" or words of similar import, pursuant to MGL c. 41, § 81U, which complied at the time of such recording or endorsement, whichever is earlier, with all of the minimum area requirements set forth in the Zoning Bylaw, except for this subsection; provided, however, that this subsection shall apply to any subdivision under the Subdivision Control Law, aforesaid, submitted to the Planning Board on or after the effective date of this subsection.
C. 
Stormwater management system. No part or portion of any lot which contains any element of a stormwater management system, as defined under § 201-1.2 of this Zoning Bylaw, shall be used toward calculating the minimum lot area required under Subsection A. This subsection shall not apply to any of the following:
[5-13-2002 ATM; amended 5-14-2007 ATM, Art. 17]
(1) 
A building lot lawfully laid out by plan or deed and duly recorded prior to the adoption of the Town's Zoning Bylaw;
(2) 
A building lot for single- or two-family residential use that is eligible for protection from zoning changes that increase lot area requirements under MGL c. 40A, § 6, on the effective date of this subsection, provided that the lot complied with all applicable lot area requirements at the time of its creation;
(3) 
A building lot that is shown on a plan that was duly endorsed as "Approval Not Required" under MGL c. 41, §§ 81L and 81P, prior to the effective date of this subsection, in which case the predecessor requirements of this subsection shall apply; or
(4) 
A building lot shown on a definitive subdivision plan duly endorsed by the Planning Board with the words "Approved under the Subdivision Control Law," or words of similar import, pursuant to MGL c. 41, § 81U, prior to the effective date of this subsection and in which case the applicable predecessor requirements of this subsection shall apply.
A. 
The minimum frontage measured at the street line shall be 80 feet for lots in all districts. Street frontage shall be continuous and uninterrupted.
B. 
The minimum lot width measured at the required setback line shall be 150 feet in all districts except Business Districts A and B where the minimum shall be 125 feet.
C. 
No two points on lot lines shall be less than 80 feet apart, measured in a straight line, except where the shortest distance between such points, measured along the perimeter of the lot, is less than or equal to three times the aforesaid straight line distance.
A. 
Front yard.
(1) 
No building and/or structure shall be erected, placed or added to so as to extend within the following required front yards:
Measured from Front Property Line
Measured from Way Center Line
Residential A
50 feet
75 feet
Residential B
35 feet
60 feet
Business A
15 feet1
N/A
Business B-1 to B-8, C-1 to C-3
50 feet
75 feet
1
Parking areas are prohibited within the front yard setbacks.
[5-10-2011 ATM ]
(2) 
However, no required yard shall exceed the average yards provided on lots abutting on either side, a vacant lot to be considered as if occupied by a building and/or structure at the minimum yard setback.
(3) 
The front yard setback in each district shall apply to any boundaries of lots which abut and run with a street or way.
B. 
Side and rear yards.
(1) 
In Residential Districts A and B, any structure, as defined under § 201-1.2, shall maintain a minimum setback of 20 feet from any side or rear line. However, a structure that has existed since July 7, 1995, may have an addition to it erected or placed that is located less than 20 feet, but shall be a minimum of 10 feet, from a sideline. Furthermore, in the Residential District B, where abutting the Business District B-5 at the westerly boundary (measuring 950.80 feet), a structure shall maintain a minimum setback of 25 feet. Furthermore, in the Residential Districts A and B, any small detached accessory structure, as defined under § 201-1.2, shall be required to maintain a minimum setback of five feet from any adjacent boundary line.
[Amended 5-6-2019 ATM, Art. 30; 5-8-2023 ATM by Art. 42]
(2) 
In business districts, no building and/or structure shall be erected, placed or added to within 10 feet of the side line or 20 feet of the rear line of any lot. In any business district contiguous to a residential district, no building and/or structure shall be erected, placed or added to unless such building and/or structure as erected, placed or added to is set back from the boundary line delineating said business district a distance equal to not less than 20% of the distance of the said boundary line from the way line of the public way from which the depth of such business district is measured; provided, however, that such setback shall not be required to be more than 100 feet. For purposes of this subsection, Business Districts A and B shall not be considered contiguous to any residential district if the business district and the residential district are separated by a public way.
[Amended 5-6-2019 ATM, Art. 30]
(3) 
Excepted from this provision is Business District B-5 only. No building and/or structure in this district shall be erected, placed or added to unless such building and/or structure is set back from the easterly boundary line (measuring 950.80 feet) a distance of 25 feet.
A. 
No building lot may be created in Residential District A or Residential District B unless:
(1) 
The lot has a width of at least 150 feet at the required setback line, which required setback line will be 50 feet measured from the front property line in Residential District A, and 35 feet measured from the front property line in Residential District B; or 75 feet measured from the way center line in Residential District A and 60 feet measured from the way center line in Residential District B;
(2) 
The lot shall contain at least 5,000 square feet of land between the required setback line and the way; and
(3) 
The area of the lot between the said required setback line and a line drawn parallel to the said required setback line a distance of 100 feet beyond the required setback line shall be not less than 11,500 square feet.
B. 
No dwelling may be erected or placed unless within a circle 150 feet in diameter inscribed within the lot lines.
A. 
No building and/or structure shall be erected or altered to exceed 2 1/2 stories in height, or 34 feet, in any residential district and Business Districts A and B or three stories, or 40 feet, in Business District C, nor shall any dwelling unit in a business district exceed 2 1/2 stories, or 34 feet, in height. Chimneys, elevators, poles, spires, tanks, towers and other projections not used for human occupancy may extend above the building and/or structure height limits by a maximum of 10 feet.
B. 
Poles, tanks, towers and other projections not attached to a building and/or structure shall not exceed the maximum allowed building and/or structure height unless approved by a special permit.