In expansion of the legislative intent contained in Article I, § 230-2, of this chapter, it is hereby declared to be the intent of this article with respect to the R-4 Medium Density Residential development, to provide regulations for residential neighborhood uses.
A. 
To minimize land use conflicts between residential and commercial uses.
B. 
To maximize use of planned community facilities and public utilities.
C. 
To protect the existing suburban homogeneous residential character of the district.
A building or group of buildings may be erected, altered or used, or a lot may be used or occupied for one principal use for any of the following purposes:
A. 
Municipal park or recreation area owned and operated by a governmental or quasi-governmental agency.
B. 
single-family detached dwelling.
C. 
Utility line, or any necessary governmental or public utility use.
D. 
Accessory use on the same lot with and customarily incidental to the above uses.
E. 
Municipal building.
[Added 12-23-2002 by Ord. No. 1153]
F. 
No-impact home-based businesses when accessory to a single-family dwelling in accordance with the standards set forth in § 230-23.
[Added 3-12-2003 by Ord. No. 1154]
G. 
Suburban transition community comprised of single-family dwellings and twin dwellings, subject to the requirements of § 230-64I.
[Added 7-24-2017 by Ord. No. 2017-3]
For all permitted buildings and uses, and special exception uses allowed, the following regulations shall apply:
A. 
Lot area.
(1) 
Public water and sewers. A lot area of not less than 12,000 square feet shall be provided for every principal building hereafter erected or used in this district.
B. 
Lot width.
(1) 
Public water and sewers. A lot width of not less than 80 feet shall be provided at the building line.
(2) 
The minimum lot width at the ultimate right-of-way for lots shall be in accordance with the provisions of § 230-25 or § 230-26 of this chapter.
C. 
Building coverage. Not more than 20% of the lot area shall be occupied by buildings.
D. 
Lot coverage. Not more than 25% of the lot area may be covered by buildings, parking lots, vehicular accessways or other impervious material.
E. 
Yard requirements.
(1) 
Front yard. There shall be a front yard on each street which the lot abuts, measured from the ultimate right-of-way to the building, the depth of which shall be at least 50 feet.
(2) 
Side yard.
(a) 
Public water and sewer. There shall be two side yards for any building or use not less than 25 feet in aggregate width and neither less than 10 feet in width.
(3) 
Rear yard. There shall be a rear yard, the depth of which shall be at least 30 feet.
F. 
Height requirements. The height of any principal building shall not exceed 35 feet and notwithstanding § 230-16 the height of any accessory structures or buildings shall not exceed one story in height and in no event greater than 14 feet. Accessory structures shall be permitted in rear yards only not less than seven feet from a side or rear lot line.
G. 
Density. The maximum achievable number of lots on a parcel shall be calculated through the environmental resource protection density determination contained in § 230-49B.
[Added 9-16-1998 by Ord. No. 1147]
H. 
Contiguous building envelope area. The minimum contiguous building envelope area shall consist of not less than 2,000 square feet.
[Added 9-16-1998 by Ord. No. 1147]
I. 
For a suburban transition community (STC), the following regulations shall apply:
[Added 7-24-2017 by Ord. No. 2017-3]
(1) 
STCs are permitted in qualifying areas within the R-4 Residential District in order to improve public safety and community facilities. An STC must create and construct at least one major infrastructure improvement that, in the sole discretion of the Horsham Council, benefits stormwater management or traffic flow in a large portion of the Township. Examples of such improvements are as follows:
(a) 
The construction of a public collector road to mitigate existing traffic congestion.
(b) 
The construction of off-site improvements.
(c) 
The provision of stormwater management improvements that, in the sole discretion of Horsham Council, provide a significant improvement to the regional stormwater management systems.
(2) 
Site area. There shall be a minimum site area of not less than 50 acres. No more than 20% of the site area may contain resources requiring open space ratios of 100%, as contained in § 230-49B(4)(b).
(3) 
Lot width. The site shall have at least 1,000 feet of frontage on either an existing or proposed collector or arterial road.
(4) 
Building coverage. Not more than 20% of the site area shall be occupied by buildings.
(5) 
Perimeter buffer requirements. There shall be a perimeter buffer of 35 feet where an STC abuts existing single-family dwellings or residentially zoned land, provided that access roads may cross the perimeter buffer. The perimeter buffer shall be owned by the Township or, with the approval of Township Council, may be owned and maintained by a homeowners' association.
(6) 
Building setbacks.
(a) 
No building shall be located less than 40 feet from an existing public street or to a proposed collector or arterial street.
(b) 
Single-family dwellings shall have a minimum lot area of 10,000 square feet; a front yard on each street which the lot abuts, measured from the right-of-way to the building, the depth of which shall be at least 30 feet; two side yards not less than 25 feet in aggregate, with neither less than 10 feet in width; and a rear yard of at least 30 feet.
(c) 
The horizontal distance between parallel elements of buildings shall be no less than 20 feet for twin dwellings. Twin dwellings shall have at least 20 feet between the building and the right-of-way line of a street; and shall have at least 40 feet from the rear of any building to another building. Decks shall be permitted within the forty-foot distance between buildings.
(7) 
Height requirements. The height of any principal building shall not exceed 40 feet. Notwithstanding § 230-16, the height of any accessory structures or buildings shall not exceed one story in height and in no event greater than 14 feet. Accessory structures shall be permitted in rear yards only and not less than seven feet from a side or rear lot line.
(8) 
Density. The overall density within a STC shall not exceed seven dwelling units per acre of developable area, but in no event shall there be more than 2.4 dwelling units per acre of gross tract area.
(9) 
Common open space. A minimum of 50% of the site area shall be preserved as permanent common open space and shall be permanently restricted from future development. Common open space shall comply with the applicable provisions of § 230-49. Common open space shall include walking trails that connect to existing or proposed parks and internal sidewalk systems, tot lots, or other recreational features.
(10) 
Active open space. A minimum of five acres of land not restricted by environmental features or stormwater facilities shall be provided for active recreation or, in the alternative, the applicant shall construct a pedestrian trail to a public park in the Township and shall make a contribution of not less than $25,000 to the Township for improvement of the park to which the trail leads.
(11) 
An STC shall be serviced by public water and public sanitary sewers.
(12) 
Street design. Interior streets within an STC (not including roads or streets within the development which are classified as arterial or collector streets in the Subdivision and Land Development Ordinance) shall provide a minimum thirty-eight-foot-wide right-of-way and a minimum twenty-six-foot-wide cartway. Culs-de-sac shall have a fifty-foot paved radius, and the cul-de-sac bulb right-of-way radius shall be 56 feet. The length of a cul-de-sac shall not exceed 700 feet as measured along the centerline. There shall be a minimum two-foot grass strip between the sidewalk and the face of the curb. Clear sight triangles of 60 feet, as measured from the center line of the intersecting streets, shall be provided at all street intersections.
(13) 
Parking. Overflow parking areas may be perpendicular to an interior street. One garage spot per lot may be counted toward required off-street parking, provided a restriction against utilizing the garage as living space is recorded against the lot.
(14) 
Driveway separation. The minimum required driveway separation to an intersection, measured from the near edge of the driveway to the near edge of the cartway, shall be 30 feet. In instances where a driveway is opposite a street intersection, the driveway can be directly opposite with no setback.
(15) 
Community signs. In order to identify the development, every STC which includes the construction of a public collector road may construct one thirty-two-square-foot community sign at both ends of the collector road (for a total of two signs) where the collector street intersects with an existing street.