Chapter 405. Building and Use Regulations

§ 405.020. Residential Building Type Standards.

Latest version.

The following standards apply to residential building types. The standards are basic standards for each type, and may be modified by the zoning district standards for each district in Chapter 404 and the site and building design standards in Chapter 407.

Detached House — Estate Lot
Lot Size	Frontage width	150 feet minimum
Lot Size	Area	1 acre minimum; 3 acres for any permitted non-residential use
Setbacks	Front	50 feet minimum
	Side	25 feet minimum
	Corner side	50 feet minimum
	Rear	25 feet minimum
Height		35 feet maximum
Frontage Type		Yard and setback
Design and Performance Standards		Building coverage = 25% of lot area maximum

Detached House — Large Lot
Lot Size	Frontage width	100 feet to 150 feet
Lot Size	Area	12,000 square feet to 1 acre
Setbacks	Front	30 feet minimum
	Side	15 feet minimum
	Corner side	30 feet minimum
	Rear	30 feet minimum
Height		35 feet maximum
Frontage Type		Yard and setback
Design and Performance Standards		Building coverage = 35% of lot area maximum

Detached House — Neighborhood Lot
Lot Size	Frontage width	65 feet to 100 feet
Lot Size	Area	7,200 square feet to 12,000 square feet
Setbacks	Front	25 feet minimum
	Side	8 feet minimum
	Corner side	25 feet minimum
	Rear	15 feet minimum
Height		35 feet maximum
Frontage Type		Yard and setback; terrace
Design and Performance Standards		Building coverage = 40% of lot area maximum

Detached House — Small Lot
Lot Size	Frontage width	46 feet to 65 feet
Lot Size	Area	4,500 square feet to 7,200 square feet
Setbacks	Front	25 feet to 40 feet; up to 15 feet on blocks fronting neighborhood street types with terrace frontages
	Side	5 feet minimum
	Corner side	12 feet minimum
	Rear	25 feet minimum, except 4 feet for alley-loaded detached garages
Height		35 feet maximum
Frontage Type		Yard and setback; terrace
Design and Performance Standards		Building coverage = 70% of lot area maximum Residential design standards in Section 407.080 shall apply to all applications of this building type.

Detached House — Compact Lot
Lot Size	Frontage width	35 feet to 45 feet
Lot Size	Area	3,000 square feet to 4,500 square feet
Setbacks	Front	25 feet to 40 feet; up to 15 feet on blocks fronting neighborhood street types with terrace frontages or courtyard frontages
	Side	3 feet minimum
	Corner side	12 feet minimum
	Rear	25 feet minimum, except 4 feet for alley-loaded detached garages
Height		35 feet maximum
Frontage Type		Yard and setback; terrace; courtyard
Design and Performance Standards		Building coverage = 70% of lot area maximum Residential design standards in Section 407.080 shall apply to all applications of this building type. Compact lot houses may be arranged on a courtyard pattern with up to 8 units on a lot, provided the lot size shall be at least 0.75 times the lot size required for each unit, and all setbacks shall be met on the external lot only.

Duplex — Standard Lot
Lot Size	Frontage width	80 feet minimum; 40 feet minimum where party wall used
Lot Size	Area	9,000 square feet minimum; 4,500 square feet minimum where party wall used
Setbacks	Front	50 feet minimum on collector streets; 20 feet minimum all other streets
	Side	10 feet minimum; 0 feet where party wall used; 20 feet minimum distance between buildings
	Corner side	20 feet minimum
	Rear	20 feet minimum, except 4 feet minimum for alley-loaded detached garages
Height		40 feet maximum, up to 3 stories
Frontage Type		Yard and setback; terrace
Design and Performance Standards		Building coverage = 60% of lot area maximum Front-loaded and side-loaded garages shall be setback at least 50 feet from collector streets and 20 feet from all other streets. Residential design standards in Section 407.080 shall apply to all applications of this building type.

Duplex — Neighborhood Lot
Lot Size	Frontage width	65 feet to 80 feet; 32.5 feet to 40 feet where party wall used
Lot Size	Area	7,200 square feet to 9,000 square feet; 3,600 square feet to 4,500 square feet where party wall used
Setbacks	Front	25 feet to 40 feet; up to 15 feet on blocks fronting neighborhood street types with terrace or courtyard frontages
	Side	8 feet minimum; 0 feet where party wall used
	Corner Side	20 feet minimum
	Rear	20 feet minimum, except 4 feet minimum for alley-loaded detached garages
Height		35 feet
Frontage Type		Yard and setback; terrace; courtyard
Design and Performance Standards		Building coverage = 70% of lot area maximum Residential design standards in Section 407.080 shall apply to all applications of this building type. Duplexes — neighborhood lot may be arranged on a courtyard pattern with up to 6 buildings (or 12 units) on a lot, provided the lot size shall be at least 0.75 times the lot size required for each unit, and all setbacks shall be met on the external lot only.

Row House
Lot Size	Frontage width	16 feet to 32 feet
Lot Size	Area	1,600 square feet to 2,500 square feet
Setbacks	Front	8 feet to 20 feet
	Side	5 feet minimum; 0 feet where party wall used.
	Corner side	12 feet minimum
	Rear	20 feet minimum, except 4 feet minimum for alley-loaded garages.
Height		40 feet maximum, up to 3 stories.
Frontage Type		Terrace; courtyard
Design and Performance Standards		Building coverage = 80% of lot area maximum Residential design standards in Section 407.080 shall apply to all applications of this building type. No more than 8 lots/units may be attached without a minimum 20-foot separation between adjacent buildings. Row houses may be arranged on a courtyard pattern with up to 4 buildings units or 16 units on a lot, provided the lot size shall be at least 0.75 times the lot size required for each unit, and all setbacks shall be met on the external lot only.

Apartment — Walk-up
Lot Size	Frontage width	45 feet to 65 feet
Lot Size	Area	4,500 square feet to 7,200 square feet
Setbacks	Front	8 feet to 20 feet
	Side	5 feet minimum
	Corner side	12 feet minimum
	Rear	20 feet minimum, except 4 feet minimum for alley-loaded detached garages
Height		40 feet maximum, up to 3 stories; except 4 stories may be approved by a conditional use process
Frontage Type		Terrace; courtyard
Design and Performance Standards		Building coverage = 70% of lot area maximum Residential design standards in Section 407.080 shall apply to all applications of this building type. Buildings may include 3 to 12 units, provided all parking requirements are met and the parking design meets standards to minimize the impact on the streetscape, adjacent lots and character of the neighborhood. Walk-up apartments may be arranged on a courtyard pattern with up to 6 buildings units or 36 units (whichever is less) on a lot, provided the lot size shall be at least 0.75 times the lot size required for each building, and all setbacks shall be met on the external lot only.

Apartment — Low-Rise
Lot Size	Frontage width	66 feet to 150 feet
Lot Size	Area	7,200 square feet to 0.5 acre
Setbacks	Front	8 feet to 20 feet
	Side	10 feet minimum
	Corner side	20 feet minimum, except 8 feet if street-facing facade designed to front facade standards
	Rear	20 feet minimum, except 4 feet for alley-loaded detached garages
Height		40 feet maximum, up to 3 stories; except 4 stories may be approved by a conditional use process
Frontage Type		Terrace; courtyard; frontage plaza
Design and Performance Standards		Building coverage = 70% of lot area maximum Residential design standards in Section 407.080 shall apply to all applications of this building type. Buildings may include 6 to 24 units, provided all parking requirements are met and the parking design meets standards to minimize the impact on the streetscape, adjacent lots and character of the neighborhood.

Apartment — Mid-Rise
Lot Size	Frontage width	150 feet minimum
Lot Size	Area	0.5 acre to 2 acres
Setbacks	Front	20 feet minimum
	Side	20 feet minimum
	Corner side	20 feet minimum
	Rear	20 feet minimum
Height		60 feet maximum, 3 to 5 stories; except up to 10 stories may be approved by a conditional use process
Frontage Type		Terrace; courtyard; frontage plaza
Design and Performance Standards		Building coverage = 70% of lot area maximum Residential design standards in Section 407.080 shall apply to all applications of this building type. Buildings may include 24 to 120 units, provided all parking requirements are met and the parking design meets standards to minimize the impact on the streetscape, adjacent lots and character of the neighborhood.

Apartment — Complex
Lot Size	Frontage width	N/A
	Area	MF-10: 4,000 square feet minimum per ground floor dwelling unit
		MF-14: 3,000 square feet minimum per ground floor dwelling unit
		MF-18: 2,400 square feet minimum per ground floor dwelling unit
Setbacks	Front	50 feet minimum on collector streets; 20 feet minimum all other streets
	Side	10 feet minimum; except 20 feet when adjacent to a less intensive zoning district
	Corner side	10 feet minimum
	Rear	20 feet minimum, except 4 feet minimum for alley-loaded detached garages
Height		45 feet maximum, up to 3 stories, except up to 65 feet and 5 stories in the MF-18 District
Frontage Type		Buffer edge
Design and Performance Standards		Building coverage = 60% of lot area maximum Front-loaded and side-loaded garages shall be setback at least 50 feet from collector streets and 20 feet from all other streets. 8 units per floor maximum MF-10: 10 units per acre maximum MF-14: 14 units per acre maximum MF-18: 18 units per acre maximum Minimum separation of at least 20 feet from all buildings Minimum 40% developed as open space; and a minimum 10% developed as active open space

Accessory Dwelling Unit
Lot Size	Frontage width	Accessory dwelling units are only allowed in association with the detached house building types, and accessory dwelling units in an accessory structure are subject to these standards as well as standards noted in Section 405.060(A)(1).
Lot Size	Area
Setbacks	Front	A minimum of 5 feet behind the rear building line of the primary building unless attached to, and located with a detached garage in which case a minimum of 10 feet behind the front building line.
	Side	5 feet minimum; except on estate lots, then subject to the primary building standards
	Rear	5 feet minimum; except on estate lots, then subject to the primary building standards
	Side or rear, street facing	20 feet minimum; except on estate lots, then subject to the primary building standards
Height		18 feet up to 1.5 stories; except never more than the primary building
Building separation		Detached accessory dwelling units shall not be located closer than 5 feet to any other building
Design and Performance Standards		Accessory building shall be designed to include the same materials, architectural design, massing and design details as the primary building. The building footprint shall not exceed 50% of the primary building footprint, to a maximum of 700 square feet, and shall count toward the overall building coverage of the lot. The total square footage of the dwelling unit shall not exceed 50% of the primary building square footage, to a maximum of 1,200 square feet.

Live/Work Building
Lot Size	Frontage width	25 feet to 60 feet
Lot Size	Area	2,000 square feet
Setbacks	Front	0 feet to 10 feet when fronting on a designated activity street or in the NB district generally; 15 feet to 40 feet in all other cases
	Side	5 feet minimum; 0 feet where party wall used
	Corner side	5 feet to 15 feet; except 0 feet when the first 30 feet of building frontage on the side street is designed to meet the standards of the front facade
	Rear	10 feet minimum, except 0 feet minimum for alley-loaded lots
Height		15 feet to 30 feet; up to 2 stories
Frontage Type		Terrace; courtyard; frontage plaza; enhanced streetscape frontage
Design and Performance Standards		Transparency = 40% to 80% at street level; 15% to 40% on upper levels Primary entrance feature = 1 per building frontage Building coverage = 70% maximum Parking for live/work buildings in residential neighborhoods shall be limited to no more than 4 spaces per site and/or on-street parking; any on-site parking shall be setback at least 30 feet from the lot frontage and at least 10 feet from side or rear property lines.

R.O. 1996 § 405.020; Ord. No. 4558 § 1, 8-3-2015; Ord. No. 4570 § 2, 10-5-2015; Ord. No. 4585 § 3, 2-16-2016; Ord. No. 4723, 3-19-2018; Ord. No. 4795, 2-19-2019

                    
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