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JEFFERSON COUNTY
State of Washington
AN ORDINANCE AMMENDING THE
ZONING CODE ORDINANCE
NOo 09-0801-94: MODIFYING THE
DEFINITION AND STANDARDS
FOR THE IMPLEMENT A TION
OF ACCESSORY DWELLING UNITS
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ORDINANCE NO. 21-1218-95
Section 3.(4). Definitions:
Accessory Dwelling Unit: A separate dwelling unit with separate cooking facilities that is
substantially contained within the structure of a single family residence or an outbuilding
which is accessory to such residence.
Section 6.000 Table of Permitted Uses:
Accessory Dwelling Unit: Exempt in all zones with the following provision. Exempt, when
consistent with provisions of Subsection 6.20.11.
Section 6020. Development Standards:
11.
Accessory Dwelling Unit: Accessory Dwelling Units shall be subject to the following
development standards:
a.
Maximum size:
of 800 square feet.
An Accessory Dwelling Unit shall have a maximum size
b.
Owner Occupied: To obtain an Accessory Dwelling Unit (ADU) designation,
the owner of the subject property shall reside on the premises, either in the
main-or accessory dwelling. The Owner Occupant shall reside in one of the
units on the property for a minimum period of one year, provided, that in the
event of illness, death or other unforeseeable event which prevents the owner's
continued occupancy of the premises, the Development Review Division may,
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Ordinance No. 21,1218,95
Accessory Dwelling Units
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upon a finding that discontinuance of the ADU would cause a hardship on the
owner and/or tenants, grant a temporary suspension of this owner-occupancy
requirement for a period of one-year. The Development Review Division may
grant an extension of such suspension for one additional year, upon a finding of
continued hardship. The Accessory Dwelling Unit (ADU) designation will run
with both the land and the owner occupant. A property owner that has obtained
a ADU designation can not apply for another ADU designation for a period of 1
year after the first ADU designation was granted.
c.
Certificate Of Occupancy: A certificate of occupancy pursuant to the Uniform
Building Code shall be obtained from the building official and posted within the
ADU. The code inspection and compliance required to obtain a Certificate of
Occupancy in an existing building shall be restricted to the portion of the
building, to be occupied by an ADU and shall apply only to new construction
rather than existing components, except that any high hazards (i.e., smoke
detectors, fire exits, stairways, LP gas appliances and fire separation) shall be
corrected. One-hour fire separation is required for dwelling units in the same
building.
d.
Outbuildings: Outbuildings may be constructed or expanded to accommodate an
ADU within the structure. ADUs established in these outbuildings shall not be
larger than 800 square feet in floor area.
e.
Exterior Entrance: In order to preserve the outward appearance of single-family
neighborhoods, the front of the house shall have only one exterior entrance. A
separate exit doorway to the outside is required for each dwelling unit.
f.
Not for Transient Accommodation: Neither the main nor accessory dwelling
unit shall be used as a transient accommodation.
Separate Stand Alone ADUs: Separate stand alone AD Us shall be a maximum
size of 800 square feet,
g.
h.
Number: Only one ADU may be established per single family residence.
1.
Water Service: For the purpose of this ordinance, accessory dwelling units
shall be served by the pre-existing water service to the primary unit. In no case
shall new water service facilities be constructed to provide water to the
accessory dwelling unit. Accessory Dwelling Units are part of the single family
residence and shall be treated as a single water source.
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Ordinance No. 21,1218-95
Accessory Dwelling Units
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k.
Travel Trailer/ Recreational Vehicles: For the purpose of this ordinance,
accessory dwelling units shall not be travel trailers, recreational vehicles, buses,
truck storage containers or similar manufactured units which are not originally
intended to be used for residences and built to the Uniform Building Code
adopted by Jefferson County.
PASSED this 18th day of December, 1995.
JEFFERSON COUNTY
BOARD OF COMMISSIONERS
SEAL:
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Clerk of Board
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