HomeMy WebLinkAboutPresentation on Item 8 - Ordinance amending Accessory Dwelling UnitsCitywide
CODE-0107-2017
Review of amendments to Title 17 (Zoning Regulations) of the
Municipal Code associated with Accessory Dwelling Unit and Junior
Accessory Dwelling Unit provisions with a Statutory Exemption from
Environmental Review
February 4, 2020
Applicant: City of San Luis Obispo
Recommendation
2
1. Introduce an ordinance to amend Title 17 of the
Municipal Code, as recommended by Planning
Commission with a statutory exemption from environmental
review.
2. Adopt an Emergency Ordinance approving
amendments to Title 17 of the Municipal Code, with a
statutory exemption from environmental review.
Background
◼Effective January 1, 2020
◼Amended CA Government Code Section
65852.2 & 65852.22
◼Without update to City ordinance, ADU and JADU
applications must be approved if compliant with
state language within 60 days
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SB 13AB 68, 670, 881
Accessory Dwelling Unit (ADU)
◼“Accessory dwelling unit” means an attached or a
detached residential dwelling unit that provides complete
independent living facilities for one or more persons and is
located on a lot with a proposed or existing primary
residence. An accessory dwelling unit includes permanent
provisions for living, sleeping, eating, cooking, and
sanitation on the same lot as a single -family or multifamily
structure is or will be situated
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State ADU Changes
5
◼ADUs now allowed on multi family properties
◼ADU permitting cannot require owner-occupancy
◼ADUs up to 16’ in height must receive ministerial
approval
◼ADUs that eliminate parking are not required to
replace parking
◼ADUs require only a 4’ setback from side and rear lot
lines
◼ADUs that meet requirements must be approved in 60
days
Significant changes
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Previous City
Ordinance
Under State
Language
Proposed City
Ordinance
Size Maximum
(square feet)800 sf 1200 sf 1000 sf*
Multifamily
Properties Not allowed Allowed Allowed*
Owner-
Occupancy Required Not Required Not Required*
Side and Rear
Setback Req’
5 Feet
(or more)
4 Feet
Minimum
4 Feet
Minimum*
Height Normal Zoning
Standards
Must allow
16 Feet
16 Feet
Maximum*
*Stricter limits cannot be established
Junior Accessory Dwelling Unit (JADU)
◼“Junior accessory dwelling unit” means a unit that is no
more than 500 square feet in size and contained entirely
within a single-family residence. A junior accessory
dwelling unit may include separate sanitation facilities or
may share sanitation facilities with the existing structure.
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State JADU Language
8
◼Junior Accessory Dwelling Units now required to be
approved through a ministerial process.
◼Requirements and Limitations on JADUs are set by
the state, and include:
◼Limit of 500 sf
◼Must be within a single-family residential structure
◼Owner-Occupancy of property
◼State language does not allow for less restrictive
standards to be set by the City
◼Can be combined on lot with detached ADU
Proposed Height Limitation of 16 feet
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◼State law allows a city ordinance to include a
maximum height requirement, but not less than 16 feet
◼City ordinance cannot require a setback of more than
4 feet for ministerial approval.
◼Exceptions to the height requirement can be approved
through a Director’s Action application.
◼Setbacks that address privacy and solar exposure
on upper stories will be approved
Proposed Height Limitation of 16 feet
10
Proposed Size Limitation of 1000
11
◼Units are intended to be “accessory” dwelling units
◼Ordinance can no longer limit size of detached units
based on the area of primary residence.
◼Over-incentivizing ADUs may leave regular density
unused.
Clarification on Impact Fees and Utilities
12
◼The City does not currently collect impact fees for
ADUs. This ordinance update does not change impact
fees.
◼Language about impact frees is included in the update
to be consistent with state language.
◼Typically, new or upgraded utility connections are only
required if the existing laterals do not support the
additional flows required by the new unit(s)
Clarification on ADU to JADU Conversion
13
◼JADUs must be created from existing livable square
footage of a single-family residence
◼As ADUs are considered a separate unit, they are not
included as a part of the single-family residence.
◼More substantial limits apply to JADUs than ADUs.
Emergency Ordinance
14
◼Provides a clear understanding what requirements are
to be followed in connection to City regulations
(already seen confusion interpreting/applying State
Language)
◼44 Days until ordinance is in effect likely creates a
“rush” to have applications approved before then if not
consistent with City ordinance.
◼State requirements do not provide protections for solar
exposure or address privacy concerns
Clarification on Wastewater Flow Offset
15
◼State language allows for a City to create areas where
ADUs are not allowed based on water and sewer
capacity and availability.
◼Muni Code 13.08.396 allows for development within
capacity constrained areas through offsetting a project’s
additional demand.
◼Offset calculations are based on the sewage generation
and peaking factors identified in the uniform design
criteria, found in the City’s adopted engineering
standards.
Recommendation
16
1. Introduce an ordinance to amend Title 17 of the
Municipal Code, as recommended by Planning
Commission with a statutory exemption from
environmental review.
2. Adopt an Emergency Ordinance approving
amendments to Title 17 of the Municipal Code, with a
statutory exemption from environmental review.
ADU to JADU Modification to Language to allow
some flexibility
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d. Location. A junior accessory
dwelling unit must be created within
the walls of a proposed or existing
primary dwelling. Conversion of an
existing garage or attached
accessory dwelling unit into a junior
accessory dwelling unit is not permit
by this section.
What is Inflow and Infiltration (I/I)?
Inflow is stormwater that enters the wastewater
collection system at points of direct connection
Infiltration is water that flows through the ground into
the wastewater collection system through cracked sewer
mains and/or private sewer laterals
I/I -Recent Studies
Average Dry Weather Flow Conditions Peak Wet Weather Flow Conditions
Capacity Constraints