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Norwood City Zoning Code

SECTION 3

Use Regulations

§ 3.1 Principal Uses.

Except as hereinafter provided for Major Projects and for existing nonconforming uses or structures, no building or structure shall be constructed, and no building, structure or land shall be used, in whole or in part, except as permitted under Section 3.1.6, Table of Use Regulations. Uses permitted and uses allowed on special permit shall be in conformity with all the density and dimensional regulations and other pertinent requirements of these Bylaws.
3.1.1. 
By Right and Prohibited. A use listed in the Table of Use Regulations is permitted as of right in any district under which it is denoted by the letter "Y" subject to such restrictions as may be specified elsewhere in these Bylaws. A prohibited use is denoted by the letter “N”.
3.1.2. 
Special Permit; Board of Appeals. A use designated in the Table by the letters "BA" may be permitted as a special permit only if the Board of Appeals so determines and grants a special permit therefore as provided in Section 10.4 of these Bylaws subject to such restrictions as are set forth elsewhere in these Bylaws, and such restrictions as said Board may establish.
3.1.3. 
Special Permit: Planning Board. A use designated in the Table by the letters "PB" may be permitted as a special permit only if the Planning Board so determines and grants a special permit therefore as provided in Section 10.4 of these Bylaws subject to such restrictions as are set forth elsewhere in these Bylaws, and such restrictions as said Board may establish.
3.1.4. 
Interpretation. Where a use might be classified under more than one of the categories set forth in the Table of Use Regulations, the more specific category shall determine permissibility. If equally specific, the more restrictive category shall govern. A use not classifiable under any listed category is forbidden in all zoning districts.
3.1.5. 
Table of Use Regulations
[Amended 3-21-2024 STM by Art. 1; 3-21-2024 STM by Art. 4]
 
District
 
Residential
Business
Office & Industrial
USE
S
S1
S2
G
A
GB
CB
BPH
LB
O
LM
LMA
M
LSDD
NSC-MUOD
MCMOD
A. Residential Uses
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1. Single-family dwelling
Y
Y
Y
Y
Y
Y
Y
N
Y
N
N
N
N
N
N
N
2. Two-family dwelling
N
N
N
Y
Y
Y
Y
N
Y
N
N
N
N
N
PB
N
3. Two family dwelling by conversion1
N
N
N
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
4. Multifamily dwelling
N
N
N
N
BA
BA
BA
PB12,13
BA
N
N
N
N
N
PB
Y
5. Dwelling units in combination with stores or other permitted commercial purposes:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One or two family dwelling units
N
N
N
N
N
Y
Y
PB12,13
Y
N
N
N
N
N
N
N
Three or more dwelling units
N
N
N
N
N
BA
BA
PB12,13
N
N
N
N
N
N
PB
Y
6. Assisted Living Residence2
BA
BA
BA
BA
BA
BA
BA
PB12,13
BA
BA
BA
BA
BA
PB
PB
N
7. Planned Mixed Use Development
N
N
N
N
N
N
N
PB12,13
N
N
N
N
N
N
PB
Y
B. Institutional Uses
1. Religious or educational use exempted from prohibition by G.L. Chapter 40A, Section 3
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
2. Library or museum open to the public or connected with an allowed institutional use and not conducted as a gainful business
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
3. Child care center
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
4. Hospital, nursing, rest or convalescent home, other institution not for correctional purposes
BA
BA
BA
BA
BA
BA
BA
PB12
BA
N
N
N
N
PB
PB
N
5. Social, civic or recreational use by a club, lodge, owned by members and customarily conducted as a nonprofit activity
BA
BA
BA
BA
BA
Y
Y
Y12
Y
N
N
N
N
N
N
N
6. Municipal services
Y
Y
Y
Y
Y
Y
Y
Y12
Y
Y
Y
Y
Y
Y
Y
Y
7. Sheltered Workshop operated by a nonprofit charitable organization for handicapped persons
N
N
N
N
N
Y
Y
Y12
BA
N
BA
BA
Y
PB
PB
N
8. Essential services
BA
BA
BA
BA
BA
BA
BA
Y
BA
BA
BA
BA
BA
PB
PB
PB
C. Open Land or Extensive Uses
1. Agricultural use:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Extensive
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Intensive
BA
BA
BA
N
N
N
N
N
N
N
BA
BA
Y
PB
Y
Y
Farm stand
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
2. Extension of an existing cemetery
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
N
N
N
3. Reservation, wildlife preserve or other conservation area of a nonprofit organization or membership club
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
4. Commercial recreation, outdoors
N
N
N
N
N
BA
BA
Y
N
N
N
N
N
N
N
N
5. Commercial golf course with a minimum area of thirty acres and all golf course activities to be restricted to daylight hours
N
N
N
BA
BA
BA
N
PB12
N
N
Y
Y
N
N
N
N
D. Retail Uses and Places of Assembly
1. Motor vehicle, boat, motorcycle, trailer, truck or farm implement sales or auctions:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Wholly within a closed building
N
N
N
N
N
Y
Y
Y
N
N
BA
BA
BA
N
N
N
With open-lot sales or storage
N
N
N
N
N
N
N
PB12
N
N
N
N
BA
N
N
N
2. Other open lot sales area
N
N
N
N
N
N
N
PB12
N
N
N
N
BA
N
PB15
N
3. Showroom for building supplies (including plumbing, heating and ventilating equipment)
N
N
N
N
N
Y
Y
Y
N
N
N
N
BA
N
PB
Y
4. Other retail stores
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Enterprises under 25,000 net square feet floor area
N
N
N
N
N
Y
Y
Y
Y
N
BA
BA
BA
Y
PB15
Y
Larger enterprises
N
N
N
N
N
Y
Y
PB
N
N
PB
PB
PB
PB
PB15
Y
5. Restaurant:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
With drive in, drive-through, or similar service subject to Section 7.3
N
N
N
N
N
PB
N
PB
N
N
PB
PB
PB
PB
PB
PB
With service to persons standing or sitting outside the building
N
N
N
N
N
Y3
Y3
PB
N
N
N
N
BA
Y
PB15
Y
With both the above
N
N
N
N
N
N
N
PB
N
N
N
N
N
PB
N
PB
With neither the above
N
N
N
N
N
Y
Y
Y
BA
N
BA
BA
BA
Y
Y
Y
6. Commercial recreation, indoors & outdoors
N
N
N
N
N
Y
Y
Y
N
N
BA
N
BA
PB
PB15
Y
7. Adult uses as provided by Section 7.1
N
N
N
N
N
N
N
N
N
N
N
BA
N
N
N
N
8. Drugstore
N
N
N
N
N
Y
Y
Y
Y
N
BA
BA
BA
Y
PB
Y
With drive-in, drive-through, or similar service subject to Section 7.3
N
N
N
N
N
PB
N
PB
N
N
PB
PB
PB
PB
PB
PB
9. Hotel or motel, rooming house, boarding house or lodging house
N
N
N
N
N
Y
Y
PB
N
N
PB
BA
Y
PB
PB
N
E. Office Uses
1. Business or agency office, bank or other monetary institution
N
N
N
N
N
Y
Y
Y
Y
Y
BA
BA
BA
Y
Y
Y
With drive-in, drive-through, or similar service subject to Section 7.3
N
N
N
N
N
PB
PB
PB
PB
PB
PB
PB
PB
PB
N
PB
2. Office for administrative, executive or professional purposes
N
N
N
N
N
Y
Y
Y12
Y
Y
Y
Y
Y
Y
Y
Y
3. Place of business of a building tradesman or caterer
N
N
N
N
N
Y6
Y6
Y6 12
BA9
N
N
N
Y
N
Y
Y
4. Cable Television Studio
N
N
N
N
N
N
N
Y12
N
N
BA
BA
BA
PB
PB
N
5. Flex Space
N
N
N
N
N
N
N
Y12
N
N
Y
Y
N
Y
N
N
F. Service Establishments
1. Personal or consumer service
N
N
N
N
N
Y
Y
Y
Y8
N
BA
BA
BA
PB
Y
Y
2. Mortuary, undertaking or funeral establishment
N
N
N
BA
BA
Y
BA
Y12
BA
N
N
N
BA
N
N
N
3. Medical or dental laboratory; clinic
N
N
N
N
N
BA
BA
Y12
BA
Y
Y
Y
Y
Y
PB
Y
4. Shop of a cabinetmaker, sign painter, job printer or upholsterer
N
N
N
N
N
Y
Y
Y12
BA7
N
N
N
Y
N
Y
Y
5. Printing or publishing establishment
N
N
N
N
N
Y6
Y6
Y12
N
N
Y
Y
Y
N
PB
Y
6. Power laundry; dry cleaning plant or dying works; carpet or rug cleaning plant
N
N
N
N
N
Y6
Y6
Y6, 12
N
N
BA
BA
Y
N
N
N
7. Private school conducted for profit, including business or trade school, dancing or music school
N
N
N
N
N
Y
Y
Y12
N
N
Y
Y
Y
Y
Y
Y
8. Body Art Establishment
N
N
N
N
N
N
N
Y
N
N
N
N
N
N
N
N
9a. Commercial boarding/training kennel, commercial breeding kennel, animal or veterinary hospital
N
N
N
N
N
BA
BA
PB12
N
N
N
N
BA
N
N
9b. Personal Kennel
BA
BA
BA
BA
N
BA
BA
BA
BA
N
N
N
N
N
N
10. Fitness Center
N
N
N
N
N
Y
Y
Y
Y8
N
BA
BA
BA
Y
PB15
Y
11. Medical Marijuana Treatment Center – Allowed by Special Permit from the ZBA within the Medical Marijuana Overlay District. See Section 7.5
N
N
N
N
N
N
N
BA12
N
N
N
N
N
N
N
N
G. Wholesale Business & Storage
1. Wholesale showroom, with storage limited to floor samples only
N
N
N
N
N
Y
Y
Y
N
N
Y
Y
Y
Y
Y
N
2. Storage warehouse or distribution plant:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
a. Less than 25,000 gallons of toxic or hazardous materials
N
N
N
N
N
N
N
N
N
N
Y
Y
Y
Y
N
N
b. More than 25,000 gallons of toxic or hazardous materials
N
N
N
N
N
N
N
N
N
N
BA
BA
BA
PB
N
N
c. Other material or equipment
N
N
N
N
N
N
N
Y12
N
N
Y
Y
Y
Y
Y
N
3. Open lot storage
N
N
N
N
N
N
N
PB12
N
N
N
N
BA
N
PB
PB
a. Open lot storage of motor vehicles
N
N
N
N
N
N
N
PB14
N
N
N
N
N
N
N
N
H. Vehicular Service and Transportation Uses
1. Parking facility:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial
N
N
N
N
N
Y
Y
PB12
BA
N
Y
Y
Y
Y
N
N
Community or group facility solely for the parking of noncommercial motor vehicles of residents of nearby buildings
N
N
N
BA
BA
Y
Y
PB12
BA
N
Y
Y
Y
Y
PB
Y
2. Motor vehicle service:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Motor vehicle service station
N
N
N
N
N
BA
BA
PB
BA
N
N
N
BA
N
N
N
Washing and cleaning of motor vehicles
N
N
N
N
N
N
N
PB
N
N
N
N
BA
N
N
N
Auto repair facility, with all major repairs conducted wholly within a building
N
N
N
N
N
BA
BA
PB
BA
N
N
N
BA
N
N
N
Motorcycle, truck, trailer, or farm implement repair
N
N
N
N
N
N
N
PB12
N
N
N
N
BA
N
N
N
3. Bus or railroad passenger station
N
N
N
N
N
Y
Y
Y
N
N
Y
Y
Y
Y
N
N
4. Taxi office or stand
N
N
N
N
N
Y
Y
Y
Y
N
Y
Y
Y
Y
N
N
5. Ambulance dispatch operation
N
N
N
N
N
BA
BA
PB
BA
BA
BA
BA
BA
Y
N
N
6. Truck terminal or motor freight station; servicing of trucks or buses
N
N
N
N
N
N
N
PB12
N
N
N
N
BA
PB
N
N
7. Municipal airport or other municipal landing and servicing facility
N
N
N
N
N
N
N
N
N
N
Y
Y
Y
PB
N
N
8. Leasing motor vehicles
N
N
N
N
N
BA
BA
PB12
BA
N
N
N
BA
N
N
N
9. Storage of Vehicles for Sale or Lease
N
N
N
N
N
N
N
PB12,14
N
N
N
N
N
N
N
N
I. Manufacturing, Processing and Related Uses
1. Laboratory engaged in research, experimental or testing activities
N
N
N
N
N
N
N
Y12
N
Y
Y
Y
Y
Y
PB
N
2. Food processing, bottling or packaging
N
N
N
N
N
N
N
PB12
N
N
BA
BA
BA
PB
PB15
PB
3. Light manufacturing11
N
N
N
N
N
N
N
Y12
N
N
Y
Y
Y
Y
Y
PB
4. Manufacturing
N
N
N
N
N
N
N
Y12
N
N
N
N
Y
Y
Y
N
5. Earth removal (see Section 7.2)
BA
BA
BA
BA
BA
BA
BA
PB12
BA
BA
BA
BA
BA
N
N
N
6. Manufacturing: Asphalt, cement, bituminous concrete
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
7. Commercial Enterprise: rock crushing & processing, cement & concrete crushing
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
8. Research & development facilities for alternative and renewable energy facilities
N
N
N
N
N
N
N
Y12
N
N
Y
N
Y
Y
PB
N
9. Manufacturing facilities for alternative and renewable energy facilities
N
N
N
N
N
N
N
Y12
N
N
Y
N
Y
Y
PB
N
10. Life sciences, biotech, medical, and vaccine research, development and manufacturing
N
N
N
N
N
N
N
Y
PB
N
Y
PB
Y
Y
 
N
J. Accessory Uses
1. Home occupation (see Section 3.3.1)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
3. Licensed family day care home
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
4. Farm stand
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
5. Room and board for not more than two persons not members of the household (whether regular or transient)
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
6. Light manufacturing (see Section 3.4.3)
N
N
N
N
N
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
PB
7. Dwelling for caretaker, watchman
N
N
N
N
Y
Y
Y
Y
Y
N
N
N
BA
N
Y
Y
8. Transient accommodations for business visitors to the premises
N
N
N
N
N
Y
Y
Y
N
Y
Y
Y
Y
Y
N
N
9. Repair (conducted wholly within a building) and service for vehicles used in conjunction with the principal use of the premises
N
N
N
N
N
BA
BA
BA
BA
Y
Y
Y
Y
PB
N
N
10. Scientific research and development, as provided at Section 3.4.4
BA
BA
BA
BA
BA
BA
BA
Y12
BA
BA
BA
BA
BA
Y
PB
N
11. Clinic located within drug store or other principal use
N
N
N
N
N
BA
BA
Y12
N
N
BA
BA
BA
Y
N
N
12. Employee restaurant, lunchroom, cafeteria or similar place for serving on-premises employees
N
N
N
N
N
Y
Y
Y
BA
Y
Y
Y
BA
Y
Y
N
13. Retail sale of products manufactured or stored as the principal use
N
N
N
N
N
Y
Y
Y
Y
Y10
Y
Y
BA
Y
Y
Y
14. Open lot display or storage of goods products, materials or equipment:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Occupying less than 25% as much area as covered by buildings on the premises
N
N
N
N
N
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
PB
Occupying a larger area
N
N
N
N
N
BA
BA
PB12
N
N
BA
BA
BA
PB
PB
N
15. Incinerator for disposal of waste materials incidental to the principal use
N
N
N
N
N
N
N
N
N
N
BA
BA
BA
PB
N
N
16. Rental or leasing of motor vehicles
N
N
N
N
N
BA
BA
PB12
BA
N
BA
BA
BA
N
N
N
17. Livestock raising, for personal use and enjoyment of residents of the premises, but not for gain
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
18. Accessory Uses supporting Life Sciences uses and education, including but not limited to employee fitness centers, relaxation areas, personal services, classrooms, training facilities, etc.
N
N
N
N
N
PB
PB
Y
Y
PB
Y
PB
Y
Y
 
Y
K. Accessory Parking:
1. Automobiles, recreational vehicles, passenger vans (See Section 3.4.5)
Y9
Y9
Y9
Y9
Y9
Y
Y
PB12
Y
Y
Y
Y
Y
Y
Y
Y
2. Pickup trucks, not more than 6250 pounds gross vehicle weight
Y9
Y9
Y9
Y9
Y9
Y
Y
PB12
Y
Y
Y
Y
Y
Y
Y
Y
3. One other vehicle which neither exceeds 12,000 pounds gross vehicle weight, nor which exceeds 21 feet in length
Y9
Y9
Y9
Y9
Y9
Y
Y
PB12
Y
Y
Y
Y
Y
Y
PB
N
4. Larger or additional commercial vehicles
N
N
N
N
N
Y
Y
PB12
Y
Y
Y
Y
Y
Y
PB
N
5. Accessory trailer (see Section 3.4.5
Y
Y
Y
Y
Y
Y
Y
PB12
Y
Y
Y
Y
Y
Y
PB
N
3.1.6. 
Notes to Table of Use Regulations.
1. 
Provided that: the dwelling existed on July 21, 1927 and is located on a lot meeting current lot area requirements for a single-family dwelling at that location; No interior enlargement is made which, together with any changes made during the preceding five years, increases the gross floor area of the house by more than 50 percent.
2. 
Assisted Living Residences are subject to Section 8.1.
3. 
Requires outdoor dining permit from the Board of Selectmen
4. 
Must be located on same premises as a dwelling unit.
5. 
Provided that the exterior of the building retains its residential appearance.
6. 
Not over 5,000 square feet gross floor area.
7. 
Not over 1,000 square feet gross floor area.
8. 
Not more than five persons regularly employed.
9. 
Change to “BA” when accessory parking is located in a residential district and serves a nonresidential use located on the same lot
10. 
Subject to Section 3.2.3.
11. 
Except for food processing, bottling or manufacturing which requires a Special Permit from the Board of Appeals.
12. 
Route 1 Ground Level Use Restriction - These uses shall not be located at ground level within 100 feet of the Route 1 Right-of-Way line. The purpose of this restriction is to preserve the frontage area for retail-oriented and publicly accessible uses that rely on visibility of customers traveling along the Route 1 Corridor.
13. 
In the Mixed Use Overlay District – Northern Gateway (MUOD-NG) and Vanderbilt Park (MUOD-VP), allowed building types and required design standards include: Multi-Family Buildings and Development, Rowhouse/Townhouse Buildings and Development, Live/Work Buildings and Development; and Mixed Use Buildings and Development as defined in Section 9.4.8 of the Zoning Bylaw.
14. 
Storage of Vehicles for Sale or Lease are not permitted in designated Mixed Use Overlay Districts (MUOD). Open lot vehicle storage is allowed within the BPH district, except that for properties fronting on Vanderbilt Avenue, Astor Avenue, River Ridge Drive, Park Place, and Carnegie Row - open lot storage shall not be allowed except for properties having a minimum frontage of 100’ on Boston Providence Highway.
15. 
See Section 9.8.3

§ 3.2 Major Projects.

3.2.1. 
Applicability. Authorization for a net addition of more than twenty-five thousand square feet net floor area in nonresidential use or parking or storage for one hundred or more motor vehicles, measured cumulatively subsequent to the effective date of this provision, will be considered a "Major Project" if on a single lot or a set of contiguous lots in the same ownership at any time subsequent to the effective date of this provision, except for individual additions or alterations increasing floor area or vehicle parking or storage on that lot or set of contiguous lots by less than 10%.
3.2.2. 
Special Permit Required. Major Projects require authorization through a special permit from the Planning Board under the provisions of Section 10.4.

§ 3.3 Home Occupations.

3.3.1. 
General. The use of a portion of a dwelling or of a building accessory thereto by a resident of the premises as an office, studio or workroom for the conduct of a profession or customary home occupation is allowed in all districts, subject to the following where that use would not be allowed as a principal use. In particular, uses permitted hereunder may include, but are not limited to, the office of a physician, dentist, lawyer, architect, engineer, real estate agent or insurance agent; the studio of an artist, musician or teacher; the workroom of a dressmaker, photographer; a beautician; a family day care provider; or facilities for incidental work and storage in connection with the off-premises occupation of a resident builder, carpenter, painter, plumber or other artisan, or a resident tree surgeon or landscape gardener.
3.3.2. 
Conditions.
1. 
Not more than two persons other than residents of the premises shall be regularly employed thereon in connection with such use.
2. 
No stock in trade shall be regularly maintained except for products of the occupation itself, or for goods or materials customarily used incidental to its performance.
3. 
Noise or other effects shall not be produced at levels observable at the lot lines in a amounts exceeding those normal from residential use.
4. 
No change shall be made which alters the residential appearance of the buildings on the premises.
5. 
There shall be no exterior display or other outward evidence that the premises are being used for any nonresidential purpose (except for an accessory professional sign as hereinafter permitted).

§ 3.4 Accessory Uses.

3.4.1. 
Swimming Pools.
1. 
Enclosure. Every outdoor swimming pool shall be completely surrounded at all times, whether or not filled with water, by a fence or wall not less than five feet in height. Each such fence or wall shall be so constructed as not to have openings, holes, or gaps larger than four inches in any dimension except for doors and gates and except for picket fences, whose gaps between pickets shall not exceed four inches. Every fence shall be anchored to posts set in the ground two feet or more. A building may be used as part of such enclosure.
2. 
Gate. All gates or doors opening through such enclosure shall be of not less than the same height as the fence or wall and shall be equipped with a self-closing and self latching device located not more than one foot below the top of the fence or wall for keeping the gate or door securely closed at all times when not in actual use, except that the door of any dwelling which forms a part of the enclosure need not be so equipped. Each such gate or door shall be kept locked at all times when the swimming pool enclosure is not in use.
3. 
Lighting. All lighting of an outdoor pool or its enclosure shall be directed at the pool and the source of the light shall be shielded from view from any street or adjoining property. Such lighting is subject to the requirements of Section 5.3.
4. 
Drainage. Provisions shall be made for drainage of pool water without creation of hazard or nuisance on adjacent properties or within public ways. Such drainage provisions must be approved by the Board of Health.
5. 
Setbacks. Every outdoor swimming pool hereafter constructed shall be set back not less than seven and one-half feet from any side or rear lot line of the premises on which it is constructed and not less than thirty feet from any street line. The setback distance shall be measured to the nearest point of the pool, including overflow gutters but exclusive of walkways or other poolside areas. No existing swimming pool shall be enlarged so as to violate any of the foregoing setback requirements.
6. 
Alarms. All doors with direct access to the pool through that wall shall be equipped with an alarm in accordance with Section 9.2 of 780 CMR, the State Building Code, as may be amended.
7. 
Occupancy Permit. No swimming pool shall be used until an occupancy permit is issued by the Inspector of Buildings.
3.4.2. 
Office - Research District Accessory Retail Sales. In Office - Research District, facilities for the sale of those products which are manufactured or stored by the user of the premises are allowed provided that:
1. 
One parking space for each 500 square feet of floor space devoted to such sales is maintained in addition to the requirements of Section 6.1 of these Bylaws;
2. 
Sales to persons, other than employees of the user, are limited to 2 days a month;
3. 
The gross floor space of such facilities are limited to 0.5% of the premises or 5,000 square feet, whichever is less; and
4. 
No products are to be brought upon the premises by the user solely for the purpose of selling the same under the provisions hereof.
3.4.3. 
Accessory Light Manufacturing. In Limited Business and General Business Districts, light manufacturing is allowed as a use accessory to permitted principal uses, provided that:
1. 
Such manufacturing does not occupy more than 25% of the floor area on the premises; and
2. 
Off-premises sale of the manufactured product is only incidental to on-premises sales.
3.4.4. 
Accessory Scientific Research and Development. Uses, whether or not on the same premises as activities permitted as a matter of right, accessory to activities permitted as a matter of right, which activities are necessary in connection with scientific research or scientific development or related production, may be allowed upon the issuance of a special permit provided the Board of Appeals finds that the proposed accessory use does not substantially derogate from the public good.
3.4.5. 
Accessory Trailers and Major Recreational Equipment .
1. 
Residential Districts. Major recreational equipment may be stored in a Residential District only on premises owned or occupied by the owner of the goods, and only if within a building or to the rear or side of the principal building and not within ten feet of any lot side or rear lot line and no closer to the front line than the front of the building, unless the Board of Appeals grants a special permit where such location will not cause substantial detriment to the neighborhood. Such equipment may not be used for habitation, storage of materials, or any business purpose.
2. 
Nonresidential Districts. Trailers may be stored as an accessory use in nonresidential districts, provided that no such trailer shall be used for habitation or the storage of goods or merchandise.
3. 
Emergency Housing. A mobile home may be placed on premises of a residence destroyed by fire or other holocaust for temporary residence for a period of up to twelve months.
4. 
Construction Office. A trailer may be used for a temporary office incidental to construction or development on the premises under then current building permits.

§ 3.5 Temporary Uses.

3.5.1. 
Applicability. The Board of Appeals may authorize by special permit a temporary building, structure, or use not in conformity with the provisions of this BYLAWS, provided that the Board makes the following findings:
1. 
The general decision criteria of Section 10.4 are satisfied;
2. 
The reasons for the proposal have a limited duration, so there is assurance that the nonconformity will have no reason to be continued for more than three years;
3. 
The proposal does not depart from the apparent intent of the zoning BYLAWS for the vicinity in question; and
4. 
Such use will not be detrimental or injurious to persons, property or improvements in the vicinity or the town.
3.5.2. 
Term. The term of the special permit, if granted, shall be for not more than one year, subject to renewal for a total of not more than three years, whether or not consecutive.

§ 3.6 Conversion of Certain Historic Residential Structures.

(a) 
In order to encourage and assist in the preservation of large residential structures having historic value in the Town of Norwood, in any zoning district in the Town, a single-family residence built before 1930 and containing at least 4,000 square feet of habitable space, upon the grant of a Special Permit for such purpose by the Planning Board, may be converted to two, three, or four separate residential units, provided that the historic exterior of the structure is substantially maintained without major change or alteration. For the purposes of satisfying the minimum area of habitable space required for this provision of the Zoning Bylaw, additions or alterations to the structure in question that were constructed in or after 1930 shall not be included in the calculation of such minimum habitable area. In considering whether to grant a Special Permit to authorize the conversion of a structure to multiple residential units pursuant to this section, the Planning Board, in addition to making factual findings regarding the Decision Criteria set forth in Section 10.4.2 of the Zoning Bylaws, shall determine whether such a conversion contributes to the preservation of historic aspects of the Town and shall make factual findings supporting such determination.
(b) 
A Special Permit granted under this section may include reasonable conditions related to the location of newly-constructed or newly-located buildings upon the lot (or a portion of said land) on which said converted residence is located, as said lot existed at the time of the grant of such Special Permit, including conditions designed to preserve, to the extent practicable, the view of such historic structure from that portion of a public way on which it fronts. However, any such conditions shall be in force and applicable to said land only if said residence is actually converted from single-family status to two or more units pursuant to a Special Permit granted pursuant to this Section 3.6, and none of said conditions shall prohibit the division of said land into additional residential parcels pursuant to applicable law.