HomeMy WebLinkAboutO-25-06 Accessory Dwelling UnitsORDINANCE NO.O-25-06
AN ORDINANCE OF THE CITY OF SEBASTIAN, FLORIDA,
AMENDING THE LAND DEVELOPMENT CODE OF THE CITY OF
SEBASTIAN BY ADDING SECTION 54-2-7.23 TO ESTABLISH NEW
STANDARDS FOR ACCESSORY DWELLING UNITS; AMENDING
SECTION 54-5-22.2 BY ESTABLISHING A DEFINITION FOR
ACCESSORY DWELLING UNITS; AMENDING SECTION 54-2-7.5 TO
UPDATE REGULATIONS REGARDING ACCESSORY STRUCTURES
PERTAINING TO ACCESSORY DWELLING UNITS; AMENDING
SECTION 54-2-6.4 BY DELETING CONDITIONAL USE CRITIERIA FOR
GUEST HOUSES; AMENDING SECTIONS 54-2-5.2.1 AND 54-2-5.2.2 BY
DELETING GUEST HOUSES AS CONDITIONAL USES FROM THE RE-
40 AND RS-20 ZONING DISTRICTS; PROVIDING FOR SEVERABILITY;
PROVIDING FOR CONFLICTS; PROVIDING FOR CODIFICATION;
PROVIDING FOR SCRIVENER'S ERRORS; AND PROVIDING FOR AN
EFFECTIVE DATE.
WHEREAS, the City of Sebastian is presently confronting a housing situation where the home
prices and rents are currently unaffordable for families and households of middle and moderate incomes;
and
WHEREAS, the Sebastian City Council wishes to ensure the availability of suitable and adaptable
housing that accommodates City of Sebastian residents of middle and moderate incomes at all stages of
life, including the elderly, and accommodate multigeneration living; and
WHEREAS, Policy 3-1.4.2 of the City of Sebastian's Comprehensive Plan 2040 requires that
Sebastian City Council identify and analyze areas within the City of Sebastian where accessory dwelling
units may be accommodated without negatively impacting neighborhood character, while evaluating the
feasibility of including flexible regulations and standards within the City of Sebastian's Land
Development Code which promote the implementation of innovative housing design and development
concepts such as accessory dwellings units; and
WHEREAS, in accordance with Florida Statutes § 163.3202(1), each municipality shall adopt or
amend and enforce land development regulations that are consistent with and implement their adopted
Comprehensive Plan; and
WHEREAS, the Sebastian City Council hereby finds that it is in the public interest to modify and
update certain provisions of the Land Development Code of the City of Sebastian to establish new
regulations which will allow accessory dwellings units as a housing alternative for the middle and
moderate -income households, for the elderly wishing to age in place; and multigenerational living; and
WHEREAS, the Local Planning Agency of the City of Sebastian held a public hearing on
February 6, 2025, and made a recommendation to the Sebastian City Council to approve Ordinance 0-25-
06.
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NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF
SEBASTIAN, INDIAN RIVER COUNTY, FLORIDA, AS FOLLOWS:
Section 1. That the Land Development Code, City of Sebastian, Florida, is hereby amended as
follows:
Amendment 1: See. 54-5-22.2. Definition of terms.
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For the purpose of enforcing and administering this code, the following words shall have the
definition and meanings herein ascribed:
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Accesson dwelling unit (ADU). A residential living unit that is a subordinate use to the primary
dwelling unit on a sinele-family lot which Provides independent living facilities for one or more Persons.
which includes Provisions for sleeoine, eating. cooking, and sanitation. The ADU may be nhvsically
attached to a single-family residence. located entirely within a single-family residence. or located within
an existing or nr000sed detached accessory structure on a sinele-familv lot.
Accessory structure. A structure which is customarily associated with, subordinate in size and
incidental in use to the principal structure and located on the some site. Examples are tool sheds,-nd
garages. and accessory dwelling units.
Accessory use. A use that is clearly incidental to the principal use, that is subordinate in area, extent
or purpose to the principal use and that contributes to the comfort, convenience or necessity ofthe principal
use, and that is located on the same lot with such principal building or use.
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Density, maximum gross residential. The maximum gross residential density shall be determined by
dividing the "maximum allowable units" by the "gross acres of land" (i.e., dwelling units/gross land acres).
Accessory dwelling units shall not be counted towards maximum densitv.
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Amendment 2: Sec. 54-2-7.23. Accessory dwelline units.
(a) Purpose. It has been deemed to be in the Public interest to Permit accessory dwelling units 1"ADUs")
for existing single-familv residences and in zoning districts where single-familv residences are
designated as a Permitted use. so as to:
(I I Maintain a diverse supply of housing ontions:
(2) Provide flexible, adeuuate, and affordable living accommodations:
(3) Suanort homeowners utilizing excess space to offset the cost of home ownership:
141 Foster the conununitv's comnosition by establishing spaces for multivenerational living and
aping in place:
(51 Promote the conservation of natural resources and land and Prevent Proliferation of sprawl by
the renumosine of existing structures and develoaed lots.
1b) Prohibitions. The following uses directly associated with ADUs are Prohibited:
(I I The leasing of the ADU for transient short-term rentals_ as defined in Section 54-2-7.220)(a).
No accessory dwelling unit maN be utilized for commercial numoses extent for home
businesses that have been _permitted and are in compliance with regulations found in Section
54-2-7.21.
(2) The conversion of an ADU into a condominium or any other form of legal ownership distinct
from the ownership of the single-family dwelling.
(3) The conversion of an ADU into a primary dwelling unit. unless it were to become the only
dwelling unit on the lot and conform with zoning district regulations for aprimary dwelling
unit.
(c) Reauiremenrs.
0 ) Creation. An accessory dwelling unit may only be created through the following methods:
Converting existing living area attic. or garage;
ii. Adding new floor area to the living area or garage of an existing single-familv dwelling;
iii. Constructing a detached accessory dwelling unit on a lot with an existing single-family
dwelling: or
iv. Constructing_ a new single-familv dwelling with an internal or detached accessory dwelling
unit.
(2) Requirements of this section shall not supersede property owner or subdivision deed restrictions.
131 An accesson dwelling unit and principal dwelling unit shall be located on a single lot or parcel or
on a combination of lots or parcels unified under a recorded unity of title document. and combined
into one tax parcel. One accessory dwelling unit is allowed per tax parcel.
141 Density. A single-family lot proposing an ADU is exempt from the maximum Bross residential
density established by the City's Future Land Use Map for that parcel.
(5) The accessory dwelling unit shall use the same address as the principal structure..
144 Accessory dwelling units shall be located only on lots which either satisfy the minimum lot size
requirements of the applicable zoning district or are legally platted lots.
171 Any accesson dwelling unit shall be clearly incidental to the principal dwelling and shall be
developed only in coniunction with or after development of the principal dwelling unit.
(8) No accessory dwelling unit shall be established in coniunction with a multi -family dwelling unit.
(9) An accessory dwelling unit shall be chareed an impact fee based on the residential unit impact fee
category as determined by Indian River Countv.
(10) An application for a building permit to construct an accessory dwelling unit must include an
affidavit from the applicant which attests that the unit will be rented at an affordable rate to an
extremely -low-income. very -low-income. low-income. or moderate -income person or persons as
defined by Florida Statute 6163.31771. as amended from time to time.
(d) Desivn Standards.
111 Purpose. Creating standards for accesson dwelling units address the followine purposes:
Ensure that accessory dwelling units are compatible with the desired character and livabilitv
of the citv's residential neighborhoods:
ii. Respect the general building scale and placement of structures to allow sharing of common
space on the lot. such as driveways and -yards: and
iii. Ensure that accesson dwelling units are smaller in size than single-family dwelling units.
ii. Resnect the general building scale and placement of structures to allow sharing of common
space on the lot. such as driveways and yards. and
iii. Ensure that accessory dwelling units are smaller in size than single-family dwelling units.
(2) The design. character. and treatment of a detached accessory dwelling unit should be as close as
reasonably possible to those of the principal dwelling. The facade design and materials shall be
similar and consistent with the orincinal dwelling and use conventional residential windows and
doors.
(3) Mobile homes or recreational vehicles shall not be used as accessory dwelling units. The ADU
shall meet the minimum requirements for a dwelling unit in accordance with the Florida Building
Code.
(4) Size. The gross floor area of the accessory dwelling unit shall not exceed fifty percent (50%) of
the gross floor area that is under air of the nrincinal dwelling unit or one thousand gross square
feet (1,000 SF). whichever is less. Any accessory dwelling_ unit shall be no smaller than three
hundred gross square feet (300 SF).
(5) Setbacks. An accessory dwelling unit must meet the applicable zoning district regulations in which
the Dronerty lies Dertaining to setbacks and lot coverage provisions.
(6) Height. A detached accessory dwelling unit shall not exceed one story in height. The unit may be
located on a second story if the first story is utilized as a garage or storage facility.
(7) The accessory dwelling unit shall be serviced by centralized water and wastewater if those utilities
are available. or meet the Health DeDartment's well and septic requirements. Modification,
expansion, or installation of well and/or septic tank facilities to serve the accessory dwelling unit
shall be designed in a manner that does not render any adiacent vacant vrovertv unbuildable for
future develonment when well and/or septic tank facilities would be required to service
development on those adiacent properties.
(8) Parking. Adequate on -site narking_ shall be Drovided to suonort the use of both the orincinal
dwelling unit and ADU.
Amendment 3: Sec. 54-2-7.5. Accessory structures.
(a) Presence ofprincipal building required. No accessory structure shall be constructed or placed upon
a lot until the construction of a principal structure has been started and no accessory structure shall
be used unless the principal structure has received a certificate of occupancy.
(b) Location:
(1) General rule of location. No accessory structure shall be located in any required yard (setback),
other than as outlined below. Furthermore, no detached accessory structure shall extend beyond
the front building line of the principal structure that is located on the same real estate parcel or
lot.
a. Special regulations governing rear yards. Detached structures, such as utility sheds,
accessory dwelling units, and other structures accessory to a primary dwelling within a
residential zoning district may encroach into a required rear yard, provided that any such
structure maintain a minimum distance of ten feet from the rear property line and not be
located within a dedicated easement. With the exception of structures that consist solely of
screening and beams and supports for the screening material, no such structure shall exceed
400 square feet in lot coverage and shall not exceed 12 feet in height. Structures that consist
(2) Comer lots. Accessory structures may not be located in the secondary front yard of an improved
corner lot unless the corner lot is joined in unity of title within an interior lot that contains the
pilleiple np Mialal structure. However, said accessory structures shall not be located closer than
25 feet from the secondary front property line in the RS-10 zoning district, and in all other
zoning districts shall meet required front yard setbacks.
(c) General regulations of accessory buildings:
(1) No mobile home, travel trailer, tent or similar structure, truck trailer or any portion thereof, or
motor vehicle shall be permitted as an accessory structure.
(2) No accessory structure shall be constructed or maintained without a building permit being issued
by the city's building official expressly designating the type of the accessory structure (example:
garage, shed, pump house).
(3) The building official shall not issue a building permit if the accessory structure does not comply
with all other provisions of the Land Development Code, Comprehensive Plan, or the Code of
Ordinances of the City of Sebastian.
(4) No accessory structure shall be constructed or maintained if the height thereof exceeds the height
of the principal structure that is located on the same real estate parcel or lot.
(5) Attached or detached Quonset -type or style accessory structures, usually defined as any self-
supporting structure, typically in an "arch" or curved shape with no interior posts, trusses or
support beams of any kind and with the exterior sheeting forming the building, are prohibited.
(6) A residential lot will be allowed five square feet of accessory building area (cumulative,
excluding accessory dwelling units), for every 100 square feet of lot area, not to exceed 1,000
square feet total. Attached garages, which are part of the original principal building design, will
not be included in the cumulative total of accessory building area. Accessory structures, which
consist solely of screening and beams and supports for the screening material (such as screen
enclosures for swimming pool areas) will not be included in the cumulative total of accessory
building area.
(7) Excluding accessory dwelling units, Aany attached or detached accessory building over 500
square feet in area, any attached or detached carport and/or breezeway over 500 square feet in
area, must be reviewed and approved administratively
by planning staff utilizing the following criteria:
a. Accessory structures may not be constructed or maintained from corrugated metal or
corrugated metal -looking products.
b. The roof of the accessory building must have a minimum pitch of 3:12.
c. Accessory structures 501 square feet to 750 square feet in size shall be compatible with the
overall general architectural design of the primary residence, including facade and
materials, colors and trim, roofing materials and pitch.
d. Accessory structures 751 square feet to 1,000 square feet in size shall be of the same
architectural design of the primary residence, including facade and materials, colors and
trim, and mofing materials and pitch. Foundation plantings shall be required on all sides of
the accessory structure excluding entranceways and doorways. Said requirements are as
follows: One shrub for every three lineal feet, 24 inches in height at planting.
Amendment 4: Sec. 54-2-6.4. Specific criteria for approving a conditional use.
In addition to satisfaction of the general provisions cited above, a conditional use shall be permitted
only upon a finding that the proposed conditional use complies with the requirements for the respective
conditional use as specified below:
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(24) Reserved.
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shall be 30,000 squnre feet
Amendment 5: Sec. 54-2-5.2.1 Residential Estate District (RE-40).
(b) Uses permitted:
Single-family dwellings
Foster care/group homes with S 6 residents
(e) Conditional uses:
Foster care/group homes with > 6 residents
Model homes
Schools, public or private
Utilities, public and private
Protective and emergency services, public
Equestrian uses
Home occupations
Accessory residential uses
Guest houses
Child care services
Churches
Parks and recreation, public
Golf courses and support facilities
Accessory uses to conditional uses