339 ORDINANCE NO. 339
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF GRAND
TERRACE ADOPTING AMENDMENTS TO REGULATIONS OF
ACCESSORY DWELLING UNITS AND JUNIOR ACCESSORY
DWELLING UNITS
WHEREAS, Chapter 18.69 of the Grand Terrace Municipal Code establishes
regulations of accessory dwelling units and junior accessory dwelling units; and
WHEREAS, updates to the City's regulations of accessory dwelling units (ADUs)
and junior accessory dwelling units (JADUs) are needed in order to make these
regulations compliant with state law and clarify the relationship between ADUs/JADUs
and units created under SB 9; and
WHEREAS, the Planning Commission considered this ordinance at the Planning
Commission Noticed Public Hearing meeting held on March 3, 2022, and voted
unanimously 4-0 adopting a resolution recommending City Council approval; and
WHEREAS, on April 21, 2022, the City Council and Planning Commission held a
joint session to further discuss proposed SB 9 and accessory dwelling unit regulations;
and
WHEREAS, on May 10, 2022, the City Council of the City of Grand Terrace
conducted a duly noticed public hearing at the Grand Terrace City Hall Council Chambers
located 22795 Barton Road and conclude the hearing on said date; and
WHEREAS, on May 24, 2022, the City Council of the City of Grand Terrace.
adopted the proposed Ordinance; and
WHEREAS, all legal prerequisites to the adoption of this Ordinance have occurred.
NOW THEREFORE, THE CITY COUNCIL OF THE CITY OF GRAND TERRACE
DOES HEREBY ORDAIN AS FOLLOWS:
SECTION 1. Recitals. The above recitals are incorporated by reference.
SECTION 2. CEQA. The City Council finds and determines that the adoption of
an ordinance regarding second units (ADUs) in a single-family or multifamily residential
zone to implement the provisions of Government Code Sections 65852.2 and 65852.22
is exempt from CEQA review pursuant to Public Resources Code Section 21080.17.
Therefore, this ordinance does not require any environmental review under CEQA.
SECTION 3. Section 18.06.017 (Accessory dwelling unit) is hereby added to the
Grand Terrace Municipal Code and shall read as follows (additions in bold italics):
18.06.017-Accessory dwelling unit(ADU).
Ord No,, 339 Page 1 of 13 May 24, 2022
"Accessory dwelling unit" or ADU means an attached or detached
residential dwelling unit that provides complete independent living
facilities for one or more persons.An accessory dwelling unit includes
(1) an efficiency unit, as defined in Health and Safety Code Section
17958.1, and(2) a manufactured home, as defined in Health and Safety
Code Section 18007. This definition shall be interpreted as consistent
with the definition for "accessory dwelling unit"in Government Code
Section 65852.2.
SECTION 4. Section 18.06.018 (Accessory dwelling unit, junior) is hereby added
to the Grand Terrace Municipal Code and shall read as follows (additions in bold italics):
18.06.018 -Accessory dwelling unit,junior(JADU).
"Junior accessory dwelling unit" or JADU means a residential
dwelling unit that is no more than 500 feet in size and is contained
within a single-family residence. This definition shall be interpreted as
consistent with the definition for `junior accessory dwelling unit" in
Government Code Section 65852.22.
SECTION 5. Section 18.06.082 (Accessory dwelling unit) is hereby deleted in its
entirety.
SECTION 6. Chapter 18.69 of the Grand Terrace Municipal Code (Accessory
Dwelling Units) is hereby repealed and replaced in its entirety with the following (new text
in bold italics):
Chapter 18.69 -ACCESSORY DWELLING UNITS
18.69.010 - Purpose.
This chapter is intended to implement the provisions of Sections
65852.2 and 65852.22 of the Government Code and, in case of
ambiguity, shall be interpreted to be consistent with such provisions.
18.69.020 -Definitions.
For purpose of this chapter, the following terms shall be defined as
follows:
(a) "Multifamily dwelling" means a structure containing two or
more attached primary dwelling units, not including accessory
dwelling units or junior accessory dwelling units. Multiple
detached single-family dwellings on the same lot are not a
multifamily dwelling.
(b) "Single-family dwelling"means a structure containing no more
than one primary dwelling unit, not including accessory
dwelling units or junior accessory dwelling units.
Ord No. 339 Page 2 of 13 May 24, 2022
18.69.030 - Review process; certificate of occupancy.
(a) Applications for accessory dwelling units and junior accessory
dwelling units pursuant to this chapter shall be processed
ministerially, without discretionary review or a hearing, through
the administrative site and architectural review process, as
described in Chapter 18.63, within sixty(60) days from the date
the City receives a complete application if there is an existing
single-family or multifamily dwelling on the lot. If the
application to create an accessory dwelling unit or a junior
accessory dwelling unit is submitted with a permit application
to create a new single-family dwelling on the lot, the City may
delay acting on the application for the accessory dwelling unit
or the junior accessory dwelling unit until the. City acts on the
permit application to create the new single-family dwelling, but
the application to create the accessory dwelling unit or junior
accessory dwelling unit shall be considered without
discretionary review or hearing. If the applicant requests a
delay, the 60-day time period shall be tolled for the period of the
delay.
(b) A certificate of occupancy for an accessory dwelling unit shall
not be issued before the city issues a certificate of occupancy
for the primary dwelling.
18.69.040 - Consistency with density requirements, zoning, and
general plan.
Accessory dwelling units and junior accessory dwelling units do not
exceed the allowable density for the parcel on which they are located,
and are a residential use consistent with the general plan and zoning
designation of the parcel on which they are located.
18.69.050 - General requirements.
(a) Maximum Number of Units Allowed.
The following is the maximum number of accessory dwelling
units and/or junior accessory dwelling units allowed on any lot.
Notwithstanding any other provision in this chapter, the number
of accessory dwelling units and junior accessory dwelling units
permitted on a parcel that was created through an urban lot split
shall be limited as described in Section 17.30.060. Unless
specified below, only one category may be used per lot.
(1) ADU or JADU within Proposed or Existing Single-family
Dwelling or Accessory Structure. One accessory
dwelling unit and one junior accessory dwelling unit are
Ord No. 339 Page 3 of 13 May 24, 2022
permitted on a lot with one or more proposed or existing
single-family dwellings, if either:
(A) The accessory dwelling unit or junior accessory
dwelling unit is proposed within the space of a
proposed or existing single-unit dwelling
(including an attached garage); or
(B) The accessory dwelling unit is proposed within the
space of an existing accessory structure, plus an
addition beyond the physical dimensions of the
accessory structure of up to one hundred fifty(150)
square feet for the sole purpose of facilitating
entrance to and exit from the accessory dwelling
unit.
(2) Detached/Attached ADU on Lot with Single-Unit Dwelling.
One detached or one attached, new-construction
accessory dwelling unit is permitted on a lot with one or
more proposed or existing single-family dwellings. The
accessory dwelling unit may be combined with a junior
accessory dwelling unit described in subsection (a)(1) of
this section.
(3) Conversion of Existing Multifamily Dwelling. Multiple
accessory dwelling units are permitted on lots with
existing multifamily dwellings subject to the following:
(A) The amount of accessory dwelling units allowed
within a multifamily dwelling shall be equal to 25
percent of the number of units in the multifamily
dwelling; provided, that fractional units shall be
rounded down, and at least one accessory dwelling
unit shall be allowed in each multifamily dwelling
structure. For example, one accessory dwelling
unit is allowed in a multifamily dwelling structure
with seven or fewer units; two accessory dwelling
units are allowed in a multifamily dwelling
structure with eight to eleven units; and three
accessory dwelling units are allowed in a
multifamily dwelling structure with twelve units;
and
(B) An accessory dwelling unit located within a
multifamily dwelling structure may only be located
within a portion of the structure not used as livable
space, including, but not limited to, a storage
room, boiler room,passageway, attic, basement, or
Ord No. 339 Page 4 of 13 May 24, 2022
garage, provided that each unit shall comply with
state building standards for dwellings. Amenities
within common areas such as recreation rooms,
outdoor space or any space previously designed
to meet common area requirements shall not be
converted to accessory dwelling units.
(4) Detached ADU on Multifamily Lot. Up to two detached,
new-construction accessory dwelling units are permitted
on a lot that has an existing multifamily dwelling.
(b) Required Facilities.
(1) Accessory dwelling units shall include complete
independent living facilities for one or more persons,
including permanent provisions for living, sleeping,
eating, cooking, and sanitation, including a kitchen and
bathroom.
(2) Junior accessory dwelling units shall include living
facilities for one or more persons, including permanent
provisions for living, sleeping, eating, and cooking,
including an efficiency kitchen, as defined in Government
Code Section 65852.22(a), as may be amended. Junior
accessory dwelling units may include separate sanitation
facilities or may share sanitation facilities with the
primary residence.
(c) Separate Entrances; Pathway.
(1) Junior accessory dwelling units and accessory dwelling
units located within or attached,to a primary residence
shall include an entrance that is separate from the main
entrance to the primary residence.
(2) Each accessory dwelling unit and junior accessory
dwelling unit shall have an unobstructed pathway,
constructed of impermeable materials, leading up to its
main entrance, sufficient to provide access to the unit by
public safety personnel and the resident of the unit.
However, the pathway is not required to extend from the
unit all the way to the street.
(d) Development Standards. Accessory dwelling unit and junior
accessory dwelling units shall comply with the following
standards:
(1) Size.
Ord No. 339 Page 5 of 13 May 24, 2022
(A) Accessory dwelling units and junior accessory
dwelling units shall be no smaller than an
efficiency unit, as defined in Health and Safety
Code Section 17958.1.
(B) Junior accessory dwelling units shall be no larger
than 500 square feet.
(C) The size of an accessory dwelling unit shall be
limited as follows:
(i) There is no limit on the size of any accessory
dwelling , unit that is located within a
proposed or existing single-family dwelling
or accessory structure, as described in
subsection (a)(1).
(ii) There is no limit on the size of an accessory
dwelling unit that is attached to or detached
from a primary unit, except that attached and
detached accessory dwelling units shall not
be larger than the primary unit, and detached
and attached accessory dwelling units shall
comply with setback requirements, the
required distance between units in
subsection (d)(4), and the ' open space
requirements and maximum lot coverage
requirements applicable to the parcel on
which the unit is located.
(iii) Notwithstanding subsection (d)(1)(C)(ii), if
the required distance between units in
subsection (d)(4), the open space
requirements, and/or the maximum lot
coverage requirements would prevent an
attached or detached accessory dwelling
unit from being at least eight hundred (800)
square feet, or if the primary unit is less than
eight hundred (800) square feet, then an
applicant shall, nonetheless, be permitted to
construct an attached or detached
accessory dwelling unit that is up to eight
hundred(800) square feet, provided that the
unit shall comply will all other development
standards, including but not limited to
setback requirements.
Ord No. 339 Page 6 of 13 May 24, 2022
(2) Height. Accessory dwelling units are limited to two (2)
stories, or to one (1) story if built on top of a one-story
structure.
(3) Setbacks.
(A) The front setback for an accessory dwelling unit
shall be the same as for the primary unit on the
property.
(B) The side and rear setbacks for an accessory
dwelling unit shall be four(4) feet minimum.
(C) Notwithstanding(A) and(B), no setback is required
for the conversion of an existing living area,
garage, or accessory structure to an accessory
dwelling unit or junior accessory dwelling unit; or
for a new structure constructed in the same
location as an existing structure; where:
(i) the existing structure is permitted; and
(ii) the conversion or new construction will have
the same dimensions as the existing
structure.
(4) Separation Between Units. Detached accessory dwelling
units shall have a minimum wall separation from the
primary unit(s) of fifteen (15) feet.
(5) Fire Sprinklers. Accessory dwelling units shall not be
required to provide fire sprinklers if they are not required
for the primary dwelling unit.
(6) Unobstructed Space Surrounding Unit. There shall be at
least four(4) feet of unobstructed space adjacent to each
exterior wall of an accessory dwelling unit in order to
ensure that the unit is accessible by public safety
personnel. This space shall remain unobstructed at all
times.
(7) Nonconforming Conditions. Notwithstanding any other
provision of this code, approval of a permit for the
creation of an accessory dwelling unit or junior
accessory dwelling unit shall not be conditioned on the
correction of nonconforming conditions on the subject
property.
Ord No. 339 Page 7 of 13 May 24, 2022
(8) Compliance with Other Codes. Accessory dwelling units
and junior accessory dwelling units must comply with the
building code, fire code, health and safety codes, and
noise insulation standards applicable at the time the
building permit for the accessory dwelling unit or junior
accessory dwelling unit is issued.
(9) Utilities.
(A) The City shall not require a separate utility
connection between an accessory dwelling unit or
junior accessory dwelling unit_and the utility, or
impose a related connection fee or capacity
charge, for units located entirely within a primary
dwelling, unless the accessory dwelling unit or
junior accessory dwelling unit was constructed
with a new single-family home.
(B) Except as provided in subdivision (A), accessory
dwelling units and junior accessory dwelling units
shall have a separate connection to the main water
service line in the street and the applicant shall
submit plans for such line(s) to the Riverside
Highland Water Company for review and approval.
The applicant shall comply will all objective
requirements of the Riverside Highland Water
Company for the construction and operation of the
water line(s).
(10) Wastewater Service.
(A) Sewer.
(1) Prior to issuance of a building permit for an
accessory dwelling unit or junior accessory
dwelling unit, the City Engineer shall inspect
existing sewer lines and determine sewer capacity
limits. If the City Engineer determines that the
addition of a new unit or units would result in a
violation of the requirements of the California
Plumbing Code and/or other objective sewer or
septic system requirements in local or state law, or
exceed the existing sewer capacity, then the City
shall impose conditions of approval on the
development that are necessary to ensure
compliance with such requirements.
(B) Septic System:
Ord No. 339 Page 8 of 13 May 24, 2022
(1) If a parcel relies on an onsite wastewater treatment
system and the primary unit or second unit is
within 200 feet of an existing sewer system, then
the city shall require that all existing and proposed
units on the parcel be disconnected from the
onsite wastewater treatment system and
connected to the sewer system as a condition of
approval of the development unless the city
determines that there are conditions precluding
attachment.
(2) If the parcel relies on an onsite wastewater
treatment system, the city may, if applicable,
require documentation of a percolation test
completed within the last five years, or if the
percolation test has been recertified, within the last
ten years.
(3) If the City determines that the addition of a new
unit or units would exceed the current capacity of
the onsite wastewater system or result in a
violation of the requirements of the California
Plumbing Code, the requirements of the Santa Ana
Regional Water Quality Control Board, and/or other
objective City waste disposal system
requirements, then the City shall impose
conditions of approval on the development that are
necessary to ensure compliance with such
requirements.
(4) If a proposed unit would be located on the only part
of the parcel that could accommodate a new onsite
wastewater treatment system in the event the
existing system needed to be replaced, then the
City shall require that all existing and proposed
units on the parcel be disconnected from the
onsite wastewater treatment system and
connected to the sewer system as a condition of
approval of the development.
(11) Manufactured Homes.
If a manufactured home is used as an accessory dwelling
unit, it shall comply with the following requirements:
(A) It shall be no more than ten years old on the day it
is installed on the property.
Ord No. 339 Page 9 of 13 May 24, 2022
(B) It shall be installed on a permanent foundation.
(C) It must meet the design standards in Section
18.69.060(b).
(12) Address. Accessory dwelling units and junior accessory
dwelling units shall have their own address, which shall
be the address of the primary unit with the addition of a
letter(A, B, C, etc.).
(13) Other Development Standards. Except as provided in
this Section, accessory dwelling units and junior
accessory dwelling units shall comply with all
development standards applicable to the primary
residence on the same lot.
18.69.060 - Design standards.
(a) The architectural design and detailing, roof material, roof pitch,
exterior color, and finish materials of an accessory dwelling unit
or junior accessory dwelling unit shall be the same as those of
the primary dwelling, except that a flat roof shall not be
permitted even if all or a portion of the roof on the primary
dwelling is flat.
(b) The roof shall have a minimum 16-inch overhang.
(c) If a manufactured home is used as an accessory dwelling unit,
it shall comply with the following design requirements:
(1) It shall comply with the design requirements in Section
18.69.060(a), except that if materials matching the
primary dwelling are not commercially available for a
manufactured home, then finish materials shall be the
same color as the finish materials on the primary
dwelling; and
(2) Mechanical equipment associated with the manufactured
home shall be located so as to not be visible from a public
street or adjoining property.
18.69.070 -Parking requirements.
(a) One new parking space shall be provided for each accessory
dwelling unit on a lot, except as otherwise provided in
subsection (c). The new parking space(s)shall be located on the
same lot where the accessory dwelling unit is located, shall not
be on the street, and shall be in addition to all existing parking
spaces on the lot.
Ord No. 339 Page 10 of 13 May 24, 2022
(b) No additional parking spaces are required for a junior accessory
dwelling unit.
(c) Notwithstanding subsection (a), no additional parking is
required for accessory dwelling units in the following
circumstances:
(1) The accessory dwelling unit is located within one-half
mile walking distance of public transit, as defined in
Government Code Section 65852.2Q), as may be
amended.
(2) The accessory dwelling unit is located within an
architecturally and historically significant historic
district.
(3) The accessory dwelling unit is located entirely within the
proposed or existing primary residence or an accessory
structure.
(4) When on-street parking permits are required but not
offered to the occupant of the accessory dwelling unit.
(5) When there is a car share vehicle located within one block
of the accessory dwelling unit.
(d) Off-street parking may be provided in setback areas in locations
determined by the planning and development services
department or through tandem parking, unless specific findings
are made that parking in setback areas or tandem parking is not
feasible based on specific site or regional topographical or fire
and life safety conditions.
(e) Off-street parking spaces do not need to be replaced when a
garage, carport, or covered parking structure is demolished in
conjunction with the construction of an accessory dwelling unit
or is converted to an accessory dwelling unit. However, off-
street parking spaces shall be replaced when a garage, carport,
or covered parking structure is demolished in conjunction with
the construction of a junior accessory dwelling unit or is
converted to a junior accessory dwelling unit.
(fl All parking design standards in Chapter 18.60 shall apply unless
they conflict within this Chapter, in which case this Chapter
shall govern.
18.69.080 - Sale and rental of units; rental property program
compliance.
Ord No. 339 Page 11 of 13 May 24, 2022
(a) Except as provided in Government Code Section 65852.26,
accessory dwelling units and junior accessory dwelling units
may not be sold or otherwise conveyed separate from the
primary residence.
(b) An accessory dwelling unit or junior accessory dwelling unit
may be rented separate from the primary residence but may not
be rented for a term of less than 31 consecutive days.
(c) Unless the owner of the property provides the City with an
annual certification that a unit is owner-occupied, accessory
dwelling units and junior accessory dwelling units shall be
assumed to be rental units and shall be subject to the
requirements in Chapter 5.80 (Non-Owner Occupied/Rental
Property Program).
18.69.090 - Deed restriction —junior accessory dwelling unit.
The approval of a junior accessory dwelling unit shall be conditioned
on the recordation of a deed restriction, which shall run with the land,
and will be recorded by the City on the property where the unit is, or
will be, located. The covenant shall be approved by the city attorney
and the building official. The property owner shall bear the cost of
recording the deed restriction. The deed restriction shall include the
following:
(a) A prohibition on the sale of the unit separately from the sale of
the primary residence, including a statement that the deed
restriction may be enforced against future purchasers.
(b) A restriction on the size and attributes of the unit that conforms
to Government Code Section 65852.22, including the owner-
occupancy requirement in Section 18.69.100.
18.69.100 - Owner occupancy—junior accessory dwelling unit.
The property owner must reside in any single-family residence that
includes a junior accessory dwelling unit. The owner may reside in
either the junior accessory dwelling unit or the remaining portion of
the structure. However, owner-occupancy is not required if the owner
is a government agency, land trust, or housing organization.
18.69.110 - Development impact fees.
No impact fee shall be imposed for an accessory dwelling unit less
than seven hundred fifty square feet. Any impact fees charged for an
accessory dwelling unit of seven hundred fifty square feet or more
shall be charged proportionately in relation to the square footage of
Ord No. 339 Page 12 of 13 May 24, 2022
the primary dwelling unit. For purposes of this section, "impact fee"
has the meaning given in Government Code Section 65852.2(0(3)(b).
SECTION 7. Severability. If any provision(s) of this Ordinance or the application
thereof to any person or circumstances is held invalid or unconstitutional by any court of
competent jurisdiction, such invalidity or unconstitutionality shall not affect any other
provision or application, and to this end the provisions of this ordinance are declared to
be severable. The City Council hereby declares that they would have adopted this
ordinance and each section, subsection, sentence, clause, phrase, part or portion thereof,
irrespective of the fact that any one or more sections, subsections, clauses, phrases,
parts or portions thereof be declared invalid or unconstitutional.
SECTION 8. Posting. The City Clerk shall certify to the passage and adoption of
this Ordinance by the City Council and shall cause this ordinance to be published or
posted in accordance with Government Code Section 36933 as required by law.
SECTION 9. Submission to Department of Housing and Community Development.
Pursuant to Government Code section 65852.2(h), a copy of this ordinance shall be
submitted to the Department of Housing and Community Development within 60 days
after adoption.
SECTION 10. This Ordinance shall take effect and be in full force and effect from
and after thirty (30) calendar days after its final passage and adoption.
PASSED, APPROVED, AND ADOPTED by the City Council of the City of Grand
Terrace at a regular meeting held on the 24th day of May 2022.
Da y
Mayo
ATTEST:
bra Thomas
City Clerk
APPROVED AS TO FORM:
Adrian R. Guerra
City Attorney
Ord No. 339 Page 13 of 13 May 24, 2022
STATE OF CALIFORNIA )
COUNTY OF SAN BERNARDINO )
CITY OF GRAND TERRACE )
I Debra L. Thomas, City Clerk of the CITY OF GRAND TERRACE, CALIFORNIA,
DO HEREBY CERTIFY that the foregoing Ordinance, being Ordinance No. 339 was
duly passed, approved and adopted by the City Council, approved and signed by the
Mayor, and attested by the City Clerk, at the regular meeting of said City Council held
on the 24th day of May 2022, and that the same was passed and adopted by the
following vote:
AYES: Council Members Allen, Wilson, Robles; Mayor Pro Tern Hussey;
Mayor McNaboe
NOES: None.
ABSENT: None.
ABSTAIN: None.
Executed this 26th day of May 2022, at Grand Terrace, California.
Debra L. Thomas
City Clerk
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