Page 205 - Des Moines - Zoning, Planning and Design Ch 134, 135

DRAFT 135-4. PArKiNG

Parking Credits and Reductions

calculated on the basis of gross floor area, minus community development director. Parking data and
parking and loading areas and areas of a building studies provided by applicants must include estimates
occupied exclusively by mechanical equipment and of parking demand based on reliable data collected
service areas (e.g., dumpsters and recycling bins). from comparable local uses or on external data from
credible research organizations, such as the Urban
4.3.2 MUltiPle USeS Land Institute (ULI) and the Institute of Transportation
Lots containing more than one use or tenant must Engineers (ITE). Comparability will be determined by
provide parking in an amount equal to the total density, scale, bulk, area, type of activity and location.
aggregate number of spaces required for each use Such parking studies must document the source of all
or tenant on the lot except when a shared parking data used to develop proposed requirements.
arrangement is approved in accordance with 135-4.4.4.

4.3.3 cAlcUlAtiONS 135-4.4 Parking credits and reductions 2
In calculating the number of parking spaces required
for uses subject to a minimum parking ratio of “x” 4.4.1 ON-Street PArKiNG
spaces per 1,000 square feet, first divide the floor Nonresidential uses may count on-street parking
area of the subject use by 1,000 and then multiply the spaces on public street rights-of-way abutting the
result by “x.” If, for example, a minimum parking ratio subject property towards satisfying off-street motor
of 2.5 spaces per 1,000 square feet is applied to a use vehicle parking requirements. One on-street parking
occupying 1,500 square feet of floor area, the minimum space credit may be taken for each 25 linear feet
parking requirement for that use would be calculated of abutting right-of-way where on-street parking is
as follows: (1.500 sq. ft. ÷ 1,000) × 2.5 = 1.5 × 3.5 = 3.75, allowed. Only space on the same side of the street as
which is rounded up to 4 spaces. the subject use may be counted.
4.3.4 OccUPANcY-BASeD StANDArDS 4.4.2 cAr-SHAre AND BiKe-SHAre SerVice
For the purpose of computing parking requirements The following parking credits apply to nonresidential
based on staff, students, members, residents or uses that are required to provide 10 or more motor
occupants, calculations must be based on the average vehicle parking spaces and to residential projects that
number of persons working on any single shift, the are required to provide 25 or more motor vehicle
average enrollment or membership or the area’s code- parking spaces.
rated capacity, whichever is applicable. A. The number of required motor vehicle parking
spaces is reduced by 4 spaces for each parking
4.3.5 BeNcH SeAtiNG space that is leased by a city-approved car-share
For the purpose of calculating parking requirements program for use by a car-share vehicle.
based on seating, the building code governs.
B. The number of required motor vehicle parking
4.3.6 UNliSteD USeS spaces is reduced by 2 spaces for uses that provide
Upon receiving a development or permit application space for a city-approved bike-share program facility
for a use not specifically listed in an off-street parking with a minimum of 8 bicycle parking docks.
schedule, the community development director is
authorized to apply the off-street parking ratio specified 4.4.3 MOtOrcYcle AND ScOOter PArKiNG
for the listed use that the director deems most similar In parking lots containing more than 10 parking spaces,
to the proposed use or establish a minimum off- the provision of motorcycle or scooter parking spaces
street parking requirement for the proposed use in may be credited toward satisfying the minimum off-
accordance with 135-4.3.7. street parking ratios of Table 4.2-1 at the rate of one
motor vehicle parking space for each 2 motorcycle or
4.3.7 eStABliSHMeNt OF OtHer rAtiOS scooter parking spaces. The maximum credit allowed
The community development director is authorized under this provision is 2 spaces or 10% of the total
to establish required minimum parking ratios for minimum motor vehicle parking requirement for the
unlisted uses and in those instances where authority subject property, whichever is greater. To receive
to establish a requirement is expressly provided. credit, each motorcycle and scooter space must have
Such ratios must be established on the basis of (1) a concrete surface and minimum dimensions of 4 feet
a similar use/parking determination (as described by 8 feet. Areas restricted to motorcycle and scooter
in 135-4.3.6), (2) on parking data provided by the
applicant or (3) other information available to the 2 Entire section is new.

CITY OF DES MOINES CHAPTER 135: PLANNING AND DESIGN DRAFT 135-4-5