Portland Land Use Code

Citation: Portland Land Use Code
Parent Document: Portland Land Use Code
Jurisdiction: Portland (municipal)
Original Source: https://www.portlandmaine.gov/asset/a5dcd1dc-4117-40b3-b3da-74a56919e14b ↗

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25% of the unbuilt lot area, with the exception the height of the structure shall be limited
of off-street parking or as otherwise provided to 25 feet.
in Subsection 6.6.2. 8. In residential zones, detached ADUs,
regardless of size, shall be subject to side
6.6.2 Standards for specific accessory uses and rear setbacks for detached accessory
A. Accessory Dwelling Units (ADUs) structures less than 250 square feet, as
1. Accessory Dwelling Units (ADUs) shall be established in Article 7.
permitted on all lawfully conforming and 9. Detached ADUs shall not be permitted
nonconforming lots with legal residential between a principal structure and a front
uses. lot line.
2. ADUs shall be permitted as new detached B. Antennas, discs, transmitting and receiving
accessory structures, building additions, or equipment. Building-mounted antennas, discs,
within existing lawfully conforming or and other transmitting and receiving
nonconforming structures. However, the equipment shall be:
addition of an ADU may in no way increase 1. No taller than 15 feet above the highest
the degree of nonconformity of any structural steel of the building roof.
structure unless otherwise permitted 2. Setback no less than 15 feet from the
under this subsection. building perimeter.
3. Up to two ADUs shall be permitted per 3. Integrated into the architecture of the
qualifying property. building in placement, form, color, and
4. Under circumstances where an existing material so as to screen or camouflage
nonconforming structure is converted to such equipment from public view.
an ADU, the design of the ADU shall take C. Drive-throughs
into consideration to the extent 1. Drive-throughs shall be permitted as an
practicable the privacy of adjacent accessory use in the B-4 zone.
properties. 2. Drive-throughs shall be permitted as
5. An ADU shall be limited to a gross floor conditional accessory uses in the B-2 zone
area of 2/3 of the gross floor area of the only if a drive-through was located on the
largest principal unit on the lot. The site as of the effective date of this Code.
aggregate square footage of detached 3. In all other zones, drive-throughs shall be
ADUs on a lot shall not exceed the gross prohibited.
floor area of the principal structure. 4. Drive-throughs shall be subject to the
6. ADUs shall be exempt from maximum lot following review standards:
coverage and minimum lot area per a. All components of a drive-through,
dwelling unit requirements. including, but not limited to, signs,
7. Detached ADUs shall be limited to a stacking lanes, menu/order boards,
maximum height of 18 feet, unless trash receptacles, and service
constructed above a garage, in which case windows shall be located to the side 6-28 | CITY OF PORTLAND LAND USE CODE USE STANDARDS

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