1d. City code PUD residental district I 1 4 .
ill ..,;' C ITYOF
1
i CHANHASSEN
1 . 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317
(612) 937 -1900 • FAX (612) 937 -5739
to/ CNy Adrntnisttata
1 MEMORANDUM t'"' °''s' ✓Dit)A-
$i3 .1._....._..._
TO: Don Ashworth, City Manager D I a -18 2_
DL:1: Sit rn tc'1 'n n: T.I"''.431nn
FROM: Paul Krauss, Plann Director
Pat, 5., ' to Council
1 DATE: November 18, 1992 / /—a3 - 9 2-
SUBJ: Second Reading for Ordinance Amendment to Establish Residential Planned Unit
1 Development Districts
1 PROPOSAL /SUMMARY
I At the last meeting, the City Council approved first reading of the proposed Residential PUD
Ordinance. The Council made several changes to the ordinance that had been approved by the
Planning Commission. Minimum lot areas were increased from 10,000 to 11,000 square feet.
I An average lot area of at least 15,000 square feet for all lots contained within the PUD was
established. Lastly, the minimum front yard setback was increased from 20 feet to 30 feet out
of concern for cars which may need to be parked and visual impacts.
I Staff has made the changes requested by the Council. Relative to the 30 foot front yard setback,
we note that the Council's position has been incorporated into the draft. However, we did
I provide language indicating that the City Council may waive this requirement when it is
demonstrated that environmental protection would be enhanced. In these instances, a minimum
front yard setback of 20 feet shall be enforced. We believe this is consistent with your concerns
1 while maintaining the Council's flexibility to allow reduced front yard setbacks in specific
situations where the developer demonstrates to the Council's satisfaction that it is warranted.
1 Lastly, we note there was a mix up in the last packet where you were sent an earlier draft of the
PUD ordinance. The current copy, which is being offered for final approval, is the one approved
by the Planning Commission. It differs primarily in the intent section but is otherwise consistent.
I STAFF RECOMMENDATION
1 Staff recommends that the City Council approve the second reading of Article VIII, Planned Unit
Development District for publication and adoption. We also recommend that the Council approve
1 the proposed summary of the ordinance for publication purposes.
If
1 t$If PRINTED ON RECYCLED PAPER
1
CITY OF CHANHASSEN
CARVER AND HENNEPIN COUNTIES, MINNESOTA
ORDINANCE NO.
' AN ORDINANCE AMENDING CHAPTER 20 OF THE
CHANHASSEN CITY CODE, THE ZONING ORDINANCE
The City Council of the City of Chanhassen ordains:
Section 1. Article VIII, Planned Unit Development District of the Chanhassen City Code
is amended as follows:
Section 20 -506. Standards and Guidelines for Single Family Detached Residential Planned Unit
' Developments.
1 Intent
The use of Planned Unit Developments for residential purposes should result in a
' reasonable and verifiable exchange between the city and the developer. The developer gains the
potential for offering reduced lot sizes and flexibility in development standards which results in
a combination of reduced development costs and improved marketing flexibility. At the same
' time, the city should be offered enhanced environmental sensitivity beyond normal ordinance
requirements. Lot sizes should reflect the site's environmental limitations and opportunities and
to offer a range of housing pricing options. In addition, quality of development, as evidenced
' by landscaping, construction quality, provision of public /private open and recreational space,
should also be enhanced.
' a) Minimum Lot Size - The single family residential PUD allows lot sizes down to a
minimum of 11,000 square feet (excluding identified wetland areas from lot calculations).
Average lot sizes for the entire PUD shall maintain a minimum area of 15,000 square
feet. The applicant must demonstrate that there are a mix of lot sizes consistent with
local terrain conditions, preservation of natural features and open space and that lot sizes
are consistent with average building footprints that will be concurrently approved with the
' PUD. The applicant must demonstrate that each lot is able to accommodate a 60' x 40'
building pad and 12' x 12' deck without intruding into any required setback area or
protective easement. Each home must also have a minimum rear yard, 30 feet deep. This
area may not be encumbered by the required home /deck pads or by wetland /drainage
easements. It may include areas with steep terrain or tree cover.
b) Minimum Lot Width at Building Setback - 90 feet.
c) Minimum Lot Depth - 100 feet.
1 1
1
1
d) Minimum Setbacks: I
PUD Exterior - 30 feet
1
Front Yard - 30 feet*
Rear Yard - 30 feet
Side Yard - 10 feet
1
* The 30 foot front yard setback may be waived by the City Council when it is
demonstrated that environmental protection will be enhanced. In these instances, a
1
minimum front yard setback of 20 feet shall be maintained.
Accessory Buildings and Structures - located adjacent to or behind principal structure a
I
minimum of 10 feet from property line.
e) The applicant must demonstrate that the flexibility provided by the PUD is used to protect 1
and preserve natural features such as tree stands, wetlands, ponds, and scenic views.
These areas are to be permanently protected as public or private tracts or protected by I
permanently recorded easements.
f) An overall landscaping plan is required. The plan shall contain the following:
I
1) Boulevard Plantings - Located in front yard areas these shall require a mix of
over -story trees and other plantings consistent with the site. A minimum of over- I
story trees must be provided in each front yard. Well designed entrance
monument is required. In place of mass grading for building pads and roads,
stone or decorative block retaining walls shall be employed as required to preserve
I
mature trees and the site's natural topography.
2) Exterior Landscaping and Double Fronted Lots - Landscaped berms shall be
I
provided to buffer the site and lots from major roadways, railroads, and more
intensive uses. Similar measures shall be provided for double fronted lots. Where
necessary to accommodate this landscaping, additional lot depth may be required.
I
3) Rear Yard - The rear yard shall contain at least two over -story trees. Preservation
of existing trees having a diameter of at least 6 inches at 4 feet in height can be
I
used to satisfy this requirement of the PUD and the plans should be developed to
maximize tree preservation.
Architectural Standards - The applicant should demonstrate that the PUD will provide for I
g) PP P
a high level of architectural design and building materials. While this requirement is not
I intended to minimize design flexibility, a set of architectural standards should be prepared
for city approval. The primary purpose of this section is to assure the city that high
quality design will be employed and that home construction can take place without
variances or impact to adjoining lots. The PUD Agreement should include the following:
2 1
1
1 1) Standards for exterior architectural treatments.
I 2) Prohibition against free standing garages may be required by the city when it is
felt that unattached garages will be difficult to accommodate due to small lot
sizes. If an attached garage is to be converted to living space at some time in the
I future, the applicant will have to demonstrate that there is sufficient room to
accommodate a two car garage without variances to obtain a permit.
I 3) Guidelines regulating the placement of air conditioners, dog kennels, storage
buildings, and other accessory uses that could potentially impact adjoining parcels
due to small lot sizes.
I Section 20 -507. Standards and Guidelines for Single Family Attached or Cluster -Home PUD's.
I a) Single family attached, cluster, zero lot line, and similar dwelling types shall only be
allowed on sites designed for medium or high density residential uses by the City of
Chanhassen Comprehensive Plan.
I b) Minimum lot sizes. Minimum lot sizes down to 5,000 square feet may be allowed.
However, in no case will gross density exceed guidelines established by the City of
1 Chanhassen Comprehensive Plan.
I c) Setback Standards /Structures and Parking:
PUD Exterior - 50 feet
. I Interior Public Right -of -way - 30 feet*
Other setbacks Established by PUD
Agreement
I * The 30 foot front yard setback may be waived by the City Council when it is
demonstrated that environmental protection will be enhanced. In these instances, a
1 minimum front yard setback of 20 feet shall be maintained.
Id) The applicant must demonstrate that the flexibility provided by the PUD is used to protect
and preserve natural features such as tree stands, wetlands, ponds, and scenic views.
These areas are to be permanently protected as public or private tracts or protected by
1 permanently recorded easements.
e) An overall landscaping plan is required. The plan shall contain the following:
I 1) Boulevard Plantings - Located in front yard areas these shall require a mix of
over -story trees and other plantings consistent with the site. Landscaped berms
1 shall be provided to screen the site from major roadways, railroads and more
1 3
1
1
intensive land uses. Well designed entrance monument is required. In place of
mass grading for building pads and roads, stone or decorative block retaining
walls shall be employed as required to preserve mature trees and the site's natural
topography.
2) Exterior Landscaping and Double Fronted Lots - Landscaped berms shall be
provided to buffer the site and lots from major roadways, railroads, and more
intensive uses. Similar measures shall be provided for double fronted lots. Where
necessary to accommodate this landscaping, additional lot depth may be required.
3) Foundation and Yard Plantings - A minimum budget for foundation plants shall
be established and approved by the city. As each parcel is developed in the PUD,
the builder shall be required to install plant materials meeting or exceeding the
required budget prior to issuance of certificate of occupancy or provide financial
1 guarantees acceptable to the city.
4) Tree preservation is a primary goal of the PUD. A detailed tree survey should be
prepared during the design of the PUD and the plans should be developed to
maximize tree preservation.
f) Architectural Standards - The applicant should demonstrate that the PUD will provide for
a high level of architectural design and building materials. While this requirement is not
intended to minimize design flexibility, a set of architectural standards should be prepared
for city approval. The primary purpose of this section is to assure the city that high
quality design will be employed and that home construction can take place without
variances or impact to adjoining lots. The PUD Agreement should include the following:
1) Standards for exterior architectural treatments.
2) Prohibition against free standing garages may be required by the city when it is
felt that unattached garages will be difficult to accommodate due to small lot
sizes. If an attached garage is to be converted to living space at some time in the
future, the applicant will have to demonstrate that there is sufficient room to
accommodate a two car garage without variances to obtain a permit.
3) Guidelines regulating the placement of air conditioners, dog kennels, storage
buildings, and other accessory uses that could potentially impact adjoining parcels
due to small lot sizes.
1
Section 2. Amend Section 20 -505, Required General Standards, by adding the following:
m Buffer yards. The City Comprehensive Plan establishes a requirement
( ) Y tY P �uirement for buffer uffer l
yards. Buffer yards are to be established in areas indicated on the Plan where higher intensity
uses interface with low density uses. In these areas, a fifty (50) foot buffer yard is to be
4 1
1
1
1 provided where the interface occurs along a public street, a one hundred (100) foot buffer yard
is required where the interface occurs on internal lot lines.
' The buffer yard is an additional setback requirement. It is to be cumulatively calculated with the
required setbacks outlined above. The full obligation to provide the buffer yard shall be placed
1 on the parcel containing the higher intensity use.
The buffer yard is intended to provide additional physical separation and screening for the higher
1 intensity use. As such, they will be required to be provided with a combination of berming,
landscaping and/or tree preservation to maximize the buffering potential. To the extent deemed
feasible by the city, new plantings shall be designed to require the minimum of maintenance,
' however, such maintenance as may be required to maintain consistency with the approved plan,
shall be the obligation of the property owner.
Buffer yards shall be covered by a permanently recorded conservation easement running in favor
of the city.
In instances where existing topography and/or vegetation provide buffering satisfactory to the
city, or where quality site planning is achieved, the city may reduce buffer yard requirements by
' up to 50 %. The applicant shall have the full burden of demonstrating compliance with the
standards herein.
1
1
1
1
1
1
1
1 5
1
1
Ordinance Summary No. I
Residential Planned Unit Development Districts
The ordinance amendment establishes guidelines for single family detached and for single I
family attached or cluster home planned unit developments. Minimum single family PUD lot
sizes will be 11,000 square feet with an average lot size of at least 15,000 square feet within the
I
entire district. The ordinance establishes minimum buildable areas, lot widths, building setbacks,
landscaping requirements, open space requirements, and other standards related to this type of 1
development.
This ordinance was passed and adopted by the City Council on day of 1
, 1992.
Paul Krauss, AICP 1
Planning Director
(Published by the Chanhassen Villager on .)
111
1
1
1
1
1
1
1
1
1
1
1