Boise Multi-Family Development Standards
Planning and Zoning Commission: (1/13/14)
11-01-10. MULTI-FAMILY DEVELOPMENT STANDARDS
11-01-10.1.
PURPOSE AND INTENT
These standards are intended to promote multi-family residential development that increases the
variety of housing choices throughout the City through context sensitive design.
11-01-10.2.
APPLICABILITY
A.
These standards shall apply to all new multi-family development, except where specified
below.
B.
These standards are in addition to the Citywide Design Standards and Guidelines and the
Downtown Design Standards and Guidelines.
11-01-10.3.
A.
DEVELOPMENT STANDARDS
Density Bonus (units/acre)
The following density provisions are in addition to those contained in Table 11-04.3—
Dimensional Standards for Residential Districts.
(1)
Transit Incentive
Parcels adjacent to an arterial roadway with existing or planned transit service shall be
eligible for higher maximum densities by Conditional Use Permit as follows:
B.
11-01-10.4.
A.
(a)
R-1A and R-1B: 8 units/acre.
(b)
R-1C: 12 units/acre.
(c)
R-2: 20 units/acre.
Building Setbacks
The following setbacks shall apply to multi-family development in any zone, unless a lesser
setback already applies:
(1)
Minimum Front and Street Side: 15 feet (Living Space)
(2)
Balconies and porches may encroach up to 5 feet into front and street side setbacks.
MIX OF HOUSING TYPES
Housing Types: Development Level Mix
Multi-family developments on parcels between two and four acres shall incorporate at least
two housing types. Projects on more than four acres require at least three housing types.
Housing types include (See Figure 1.):
(1)
Small-lot single-family
(2)
Duplex
(3)
Triplex
1 BOISE MULTI-FAMILY DEVELOPMENT STANDARDS: FINAL DRAFT (1/13/14)
(4)
Four-plex
(5)
Townhome
(6)
Apartment (5 or more units)
(7)
An alternative housing type as approved by the Director.
(8)
A distinct building model may be provided as a substitute for one of the required
housing types. A distinct building model can be easily distinguished from others
through the use of at least two of the following:
(a)
A variation in length and footprint of 30 percent or more
(b)
A distinct variation in color and materials
(c)
A distinct variation in floor plans
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BOISE MU
ULTI-FAMILY DEVELOPMEN
D
T STANDARD
DS: FINAL DRRAFT (1/13/14)
Figure 1—R
Representative
e housing type
es.
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BOISE MU
ULTI-FAMILY DEVELOPMEN
D
T STANDARD
DS: FINAL DRRAFT (1/13/14)
B. Housing Types: Block Level Miix
No one housing type shall
s
occupy more
m
than 80 percent of anny block facee or street froontage
exceeding 500 feet inn length. Single-family dweellings are exxempt from this requiremennt.
Figure 2—Block level mix off housing type
es.
11-01-10
0.5.
TRAN
NSITION STA
ANDARDS
A.
A
Height an
nd Building Mass
M
Multi-family
M
de
evelopment adjacent
a
to single-family
s
residential (eeither existing
g homes or vvacant
single-family zoning districtss) shall:
11-01-10
0.6.
A.
A
(1)
Co
oncentrate talllest buildingss or tallest poortions of build
dings along sstreet frontag
ges or,
aw
way from adjacent single-ffamily homes.
(2)
Provide gradua
al decreases in building heiight so that neew structures are compara
able in
ale to adjaccent single-fa
amily. Compa
arable scale means new structures do not
sca
ex
xceed the heig
ght of adjace
ent dwellings b
by more thann one story orr 12 feet (withhin 15
feet of a shared lot line).
(3)
These standards do not applly when:
(a)
The adja
acent property
y is designateed High Densiity, Commerciial, or Office on
the Land
d Use Map of Blueprint Boisse;
(b)
Portions of an adjacent parcel are occupied by more than tw
wo dwelling unnits;
(c))
The adja
acent property
y is occupied by a non-connforming use; or
(d)
The prop
perty is identtified as “Sig
gnificant New
w Developmennt/Redevelop
pment”
on the Areas of Stability and Channge Map of BBlueprint Boisee.
SITE DESIGN
D
Open Spa
ace and Ameenities
(1)
Am
mount Requirred
A minimum
m of 100 square feet of open space sha
all be provideed per unit.
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BOISE MULTI-FAMILY DEVELOPMENT STANDARDS: FINAL DRAFT (1/13/14)
(2)
Standards
Open space design shall be in accordance with the Citywide Design Standards and
Guidelines and Downtown Design Standards and Guidelines.
(3)
Planned Unit Development
Planned unit developments may provide amenities in lieu of open space, in accordance with
Section 11-07-06: District Development Standards, Subsection 5: Planned Unit Development
Standards.
B.
Parking
(1)
Off-Street Parking Requirements
Table 11-01.10.1 Off-Street Parking Requirements
Type of Use
Minimum Parking Spaces
Studio/Efficiency Unit
0.75 spaces/residential unit
1 bedroom unit
1 space/residential unit
2 bedroom unit
1.25 spaces/residential unit
3 or more bedroom unit
1.5 spaces/residential unit
Guest Parking
1 space per 10 dwelling units in addition to minimum off-street parking
requirements.
Bicycle Parking
1 space per unit (If more than 10 are required, 25 percent shall be
covered)
(2)
Credits and Reductions
Parking credits and reductions for multi-family development may be granted by the Director
as follows:
(a)
On-Street Parking
The minimum parking requirement shall be reduced by one space for each on-street
space located immediately adjacent to the development parcel.
(b)
Transit-Supportive Development
The minimum parking required for developments within 1,320 feet of an existing or
planned transit line shall be reduced by ten percent.
(c)
Vertical Mixed-Use Development
The minimum parking required for multi-family development incorporated as part of a
vertical mixed-use development shall be reduced by ten percent.
(d)
Affordable Housing
The minimum parking required for multi-family development shall be reduced by ten
percent for each structure where at least 80 percent of the units meet the definition of
affordable housing provided in Section 11-01-10.8.
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BOISE MULTI-FAMILY DEVELOPMENT STANDARDS: FINAL DRAFT (1/13/14)
(e)
Podium or Structured Parking
The minimum parking required where at least 60 percent of required spaces are in
tuck-under garages, podium, or a multi-level structure shall be reduced by 25 percent.
(f)
Enclosed, Secure Bicycle Parking
The minimum parking required shall be reduced by ten percent if fully enclosed,
covered, secure bicycle parking is provided that exceeds the number required in 1107-03.2.b by at least 50 percent. The minimum required bicycle spaces shall remain
accessible to the public.
(3)
Maximum Reduction Allowed
Total reductions to the minimum off-street parking requirements of Section 11-07-03 of the
Boise Development Code shall not exceed 30 percent.
11-01-10.7.
DEFINITIONS
A.
Affordable Housing
Housing for which the occupant(s) is/are paying no more than 30 percent of his or her income for
gross housing costs, including utilities and where total annual household income does not exceed
eighty percent (80%) of area median income. Affordable housing may provide both ownership
and rental opportunity. An affordable rental property generally receives a subsidy or has
received a subsidy to allow units to be rented at or below Fair Market Rent for income qualifying
households or receives a rental voucher allowing a household to pay no more than 30% of its
monthly income towards housing.
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