Item 4GResidential Accessory Structure Standards
Summary of Planning & Zoning Commission Recommendations
March 26, 2007
Background
P&Z Recommendations :
Tiered review
Current standards apply to all accessory structures under 1,000 sq.ft. (staff review)
Design Standards apply to all individual accessory structures over 1,000 sq.ft. (including additions to an accessory structure making it larger than 1,000 sq.ft.) to a maximum of 2.3%
of the lot (staff review)
Design Criteria apply to all accessory structures over 2.3% of the lot (ZBA review)
Proposed Design Standards
Design Standards for all individual accessory structures over 1,000 sq.ft. or additions to accessory structures over 1,000 sq.ft. to a maximum of 2.3% of the lot area:
Setbacks
Height
Materials
Building Design (roofs, color, windows, trim, etc)
Design Standards & Criteria for Review
ZBA Review
Design Criteria for ZBA review of all accessory structures over 2.3% include ZBA consideration of the following:
Materials proposed
Proposed use of the accessory structure (storage, equestrian, etc.)
Compatibility with adjoining uses
Consistency of architectural style including roof structure
Setbacks and location on the property
Submittal required to demonstrate the above adequately (renderings, elevations, examples of building materials, etc.)
Design Considerations
Materials
Roof design
Building Articulation including fenestration
Architectural Compatibility
Discussion
Analysis of Existing Accessory Structures
GIS Analysis based on 2003 building layer
Evaluated accessory structures on AG, RE, and SF-1A zoned lots
Analysis included elimination of the largest structure on the parcel as the principal structure
20 ZBA SEUs on SF-1A zoned lots since 2003
Largest was 3,425 sq.ft. on 2.95 acres (2.6% of the lot area)
AG Zoned Lots
AG Zoned Lots
RE Zoned Lots
RE Zoned Lots
SF-1A Zoned Lots
SF-1A Zoned Lots
Issues for Consideration
Bulk standards:
Size standards
Height
Placement on the lot
Setbacks from adjoining properties
Setbacks from principal structure
Design aspects:
Materials
Roof design
Building articulation
Architectural compatibility
Regulatory Options
Option 1: Staff review
Option 2: Tiered review
Staff
ZBA
Option 3: Tiered review
Staff
P&Z and City Council
Comparison of Options (SF-1A)
Comparison of Options (SF-1A)
Comparison of Options (SF-2)
Comparison of Options (SF-2)
Discussion
Presentation Overview
Background
Current standards for accessory structures
Recommended standards for accessory structures
Recommended standards for POD’s
Discussion
Background
City Council directed staff to review accessory structure standards in residential zoning district in Summer 2006
Staff discussed options with P&Z and proposed changes in Fall of 2006 (Ordinance 480-OOO)
Concerns were raised with the proposed standards for accessory structures and POD’s during the public hearings
In November 2006, City Council directed staff to discuss options with P & Z
Current Standards for Residential Accessory Structures
Residential districts:
Area limitation of:
10% lot coverage for AG districts;
5% lot coverage for RE districts;
1,000 s.f. for SF-1;
600 s.f. for SF-20 & SF-30 districts; and
Flexible for PUDs.
Other standards (apply to both residential and commercial districts):
Setbacks from property lines and principal structures
Limited to 14 feet in height
Location limited to behind the principal structure
Structures in excess of the area limitation require ZBA approval
Issues with Current Standards
Accessory structure area limitations are static (i.e., not related to the size of the primary structure on the lot)
Limited design control of accessory structure
Need for increased public review of larger accessory structures
Recommended Options
Recommended Options
Portable Storage
Currently not defined in the zoning ordinance
Include portable box-like containers that are fully enclosed and lockable and typically used in residential properties
Recent phenomenon in residential moving
Typically no larger than 8’ tall, 16 feet long and 8 feet wide
Recommended Options
Define “Portable Storage Container”
Distinguish between PODs used for “remodel/construction” versus “moving”
Standards for:
permitted size,
number of units,
period of use,
location on the lot, and
permit process.
Portable Storage Container Standards
Portable storage unit permit not required for moving; but required for remodel/reconstruction (processed with building permit).
Limited to a maximum of 7 consecutive days, twice a calendar year for moving.
Limited to the duration of a reconstruction/new construction permit for a remodel.
Limited to 2 containers per site (size not to exceed 8’ in height or 20’X20’ in area) for both POD uses.
Portable Storage Container Standards (cont’d)
To be placed on the driveway /or site at the furthest point from the street.
Cannot be placed forward of the principal structure on the lot.
Cannot be placed on any public right-of-way.
Recommended Options with 480-OOO
Recommended Options with 480-OOO
Portable Storage
Currently not defined in the zoning ordinance
Include portable box-like containers that are fully enclosed and lockable and typically used in residential properties
Recent phenomenon in residential moving
Typically no larger than 8’ tall, 16 feet long and 8 feet wide
Recommended Options
Define “Portable Storage Container”
Standards for:
permitted size,
number of units,
period of use,
location on the lot,
permit process, and
signage.
Portable Storage Container Standards
Portable storage unit permit requirement
Limited to a maximum of 7 consecutive days
Limited to one container per site (size not to exceed 8’ in height or 10’X20’ in area)
Portable Storage Container Standards (cont’d)
No more than one permit per site per calendar year
To be placed on the driveway at the furthest point from the street
Cannot be placed on any public right-of-way or on any non-paved area