[Amended 10-4-2021 STM by Art. 27, AG 1-27-2022, eff. 10-4-2021; 4-25-2022 ATM by Art. 19, AG 11-4-2022, eff. 4-25-2022]
4.1.1.
Table of Dimensional Requirements. The erection,
extension, alteration or moving of a structure or the creation of
a lot or change in its size or shape (except through a public taking)
must meet the requirements set forth in this Section 4.0 and the Table
of Dimensional Regulations, except as may be otherwise set forth herein.
1.
A conforming lot may not be made nonconforming.
2.
A nonconforming lot may not be made more nonconforming.
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TABLE OF DIMENSIONAL REGULATIONS
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|---|---|---|---|---|---|---|---|---|---|---|
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DIMENSION
|
RA
|
RB
|
RR
|
B
|
I
|
GU*
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GUA*
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GUB
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GUX*
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CD
|
|
Min. Lot Area (s.f.)
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60,000
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20,000
|
80,000
|
—
|
—
|
—
|
—
|
—
|
—
|
43,560
|
|
Min. Lot Frontage (ft.)
|
175
|
125
|
200
|
—
|
—
|
75
|
75
|
75
|
75
|
150
|
|
Min. Lot Width (ft.)
|
157.5
|
112.5
|
180
|
—
|
—
|
—
|
—
|
—
|
—
|
120
|
|
Upland Circle (s.f.) (See Section 4.2.4)
|
12,000
|
12,000
|
12,000
|
—
|
—
|
—
|
—
|
—
|
—
| |
|
Min. Front Yard (ft.)
|
25
|
25
|
50
|
—
|
150
|
35
|
35
|
35
|
35
|
40
|
|
Min. Side Yard (ft.)
|
10
|
10
|
10
|
—
|
150
|
25
|
25
|
25
|
25
|
25
|
|
Min. Rear Yard (ft.)
|
10
|
10
|
10
|
10
|
150
|
25
|
25
|
25
|
25
|
25
|
|
Building Height (ft.)
|
—
|
—
|
—
|
65'
|
—
|
42'
|
42'
|
42'**
|
42'
|
50/65***
|
|
Impervious Cover (%)
|
—
|
—
|
—
|
—
|
—
|
60%
|
60%
|
60%
|
60%
|
65%
|
|
Open Space (%)
|
—
|
—
|
—
|
—
|
—
|
40%
|
40%
|
40%
|
40%
|
35%
|
|
*
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GU, GUX and GUA, and GUB. Dimensions shown are for commercial,
industrial and accessory uses. See Section 4.5.2 for single family
residential uses and Section 7.1 for multi-family uses.
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|
**
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In GUB District, any Lot with ten (10) acres or more in size,
the Zoning Board of Appeals, upon a finding that additional height
is reasonably necessary for use of a structure and will not be detrimental
to the neighborhood in which the structure is located, may authorize
by special permit a structure not to exceed sixty-five (65) feet in
height.
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|
***
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In the CD district, the Planning Board, upon a finding that
additional height is reasonably necessary for the use of a structure
and will not be detrimental to the neighborhood may authorize by special
permit a structure not to exceed sixty-five (65) feet in height provided
that the buildings are set back 300 feet from Route 28 and any residential
abutters.
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4.2.1.
One Structure per Lot. Not more than one dwelling
or building with accessory structures having a permitted use shall
hereafter be erected, placed or converted on any lot.
4.2.2.
Exemption from Front Yard Requirement. Open entrance
platforms and steps may be erected, placed or converted on any lot
within the front yard setback.
4.2.3.
Shape Factor. No dwelling, building or structure
having a permitted use in this District shall hereafter be erected,
placed, altered or converted on any lot unless the lot is substantially
regular in shape. Substantially regular in shape shall mean that a
lot has a Shape Factor (SF) of 30.0 or less. Shape Factor shall be
determined by dividing the square of the perimeter of the lot by the
area of the lot: SF=P2/A.
1.
A lot may have a Shape Factor exceeding 30.0 if a portion of
the lot itself meets the minimum lot area requirement and has a Shape
Factor of 30.0 or less and which portion includes minimum lot area,
minimum street frontage, upland building area and minimum lot width
at the street setback line, as required by this Zoning Bylaw.
2.
The requirements of Section 4.2.3 are hereby declared to be
area and width requirements within the meaning of MGL Chapter 40A
Section 6.
4.2.4.
Upland Building Area Requirement. No dwelling,
building or structure having a permitted use in this District shall
be erected, placed, altered or converted on any lot, unless the lot
has an upland building area within it which encompasses a minimum
12,000 square feet of contiguous land in the shape of a circle, square
or rectangle and in the use of a rectangle no side may measure less
than 100 feet, within which no land is subject to protection under
the Wetlands Protection Act, General Laws Chapter 131, Section 40
and within which at least 75% of the foot print of any dwelling, building
or structure, not including accessory structures, shall be located.
4.2.5.
Lot Width at Setback. The minimum width of a lot
at any point between the street line and the required minimum street
setback line for erection of a dwelling, building or structure on
the lot shall be a distance equal to or greater than 90% of the required
minimum street frontage for the lot.
4.3.1.
General. No lot is subject to a minimum lot size,
minimum frontage or minimum setback from the street line or side lot
line. See Section 4.1.1 for rear setback requirements.
4.3.2.
Special Permit for Larger Buildings. In the Business
District, no structure's footprint shall exceed 10,000 sq. ft. unless
a special permit is issued by the Board of Appeals.
4.3.3.
Height. No building or structure shall exceed three
(3) floors, excluding an unfinished attic area. The maximum height
of any building or structure shall be sixty five (65') feet, including
the roof peak or roof top structures or equipment.
4.4.1.
Lot Size. No building or structure having a permitted
use in this District is subject to a minimum lot size.
[Amended 10-4-2021 STM by Art. 27, AG 1-27-2022, eff. 10-4-2021]
4.5.1.
Front Yard Exemption. Open entrance platforms and
steps may be erected, placed or converted on any lot within the front
yard setback.
4.5.2.
Dwellings. No dwelling or accessory structure shall
hereafter be erected, placed or converted on any lot in this district
and no single family dwelling shall be converted to any other type
of dwelling in this district without complying with the requirements
of Section 4.0. Single family dwellings shall comply with the dimensional
regulations for the Residence A District in Section 4.1. Multi-family
dwellings shall comply with the standards set forth in Section 7.1.
There shall be no more than one (1) single family dwelling and one
(1) commercial building or structure erected, placed or converted
on a lot in the GU Districts provided that at least one (1) of these
buildings shall be occupied by the lot owner as a dwelling or used
by the lot owner as a place of business.
4.5.3.
Special Permit for Larger Buildings. In all GU
Districts, no structure shall exceed 20,000 sq. ft. of gross floor
area unless a special permit is issued by the Zoning Board of Appeals.
4.5.4.
Rail Lines. Either side lot line or the rear lot
line requirements shall not apply to a side lot line or rear lot line
which abuts a railroad line or siding.
4.6.1.
Setbacks.
1.
Setback from common access driveways shall be no less than twenty
five (25') feet.
2.
Setbacks from any abutting residential district shall be no
less than one hundred (100') feet and the setback area shall be landscaped,
otherwise improved or maintained in its natural state as approved
by the Special Permit Granting Authority (SPGA) to visually screen
and mitigate the residential district from noise, light and nuisance.
The SPGA may reduce the setback provided that the applicant proposes
mitigation and upon the finding by the SPGA that the proposed mitigation
is equal to or will exceed the mitigation that would be provided by
a setback of at least one hundred (100') feet and will be sufficient
to ensure that the development will not be detrimental to the established
or future character of the neighborhood and Town and there will be
no nuisance or hazard. In no case shall the setback from a residential
district be less than fifty (50') feet. Earth berms, walls, fencing,
landscaping and/or screening shall be provided to control noise, lights,
dust, to provide shade and to visually screen commercial use from
residential use. Earth berms where used should vary in width and height
throughout their length in order to achieve topographical relief and
to appear to occur naturally. Fences or walls if used shall be landscaped
on both sides to be aesthetically pleasing.
4.6.3.
Shape Factor. No building or structure having a
permitted use in this District shall be erected, placed, altered or
converted on any lot unless the lot has a Shape Factor (SF) of 40.0
or less. Shape Factor shall be determined by dividing the square of
the perimeter of the lot by the area of the lot: SF=P2/A. A lot may have a Shape Factor exceeding 40.0 if
a portion of the lot itself meets the minimum lot area requirement
and has a Shape Factor of 40.0 or less and which portion includes
minimum lot area, minimum street frontage, building envelope and minimum
lot width at the street setback line, as required by this Zoning Bylaw.
