A.
Lots.
(1)
All building lots shall at least comply with the requirements
of the Zoning Regulations of the Town, except for lots in open space
subdivisions.
(2)
Each lot shall, where possible, abut a secondary street
or an existing dedicated street.
(3)
Corner lots shall be of sufficient size to meet the
minimum building line, lot width and yard setbacks of the Zoning Regulations
for each street, except for lots in a cluster subdivision.
(4)
Where extra width has been provided to widen existing
streets, lots shall begin at such extra width line, and all setbacks
shall be measured from such line.
(5)
Side lines of lots shall be at right angles to straight
streets, and radial to curved streets.
(6)
Where factors such as rock formations, flood conditions
or similar circumstances affect the suitability of a lot or lots for
their intended use, the Planning Board may deny approval of such lots.
(7)
Block length and width, or acreage within boundary
roads, shall be sufficient to meet the lot area requirements of the
Zoning Regulations and to provide for convenient access, circulation
control and safety of street traffic.
(8)
Lots intended for commercial or industrial use shall
be designed specifically for such purposes with adequate space set
aside for off-street parking and delivery facilities.
(9)
Lots shall be designated to avoid regulated areas
under the jurisdiction of the Town Board of Trustees, the New York
State Department of Environmental Conservation and the Town Zoning
Board of Appeals.
B.
Streets. Streets shall meet Town Highway Specifications. Where appropriate, the Planning Board shall work with the Highway Superintendent and Town Engineering Office to ensure that the Town of Southold's Highway Specifications do not impact or detract from the rural and environmental character of a standard, conservation or cluster subdivision. The Highway Superintendent and the Town Engineering Office may provide an interpretation of any part of the Highway Specifications and modify such requirements under § 161-47 of the Town Code.
(1)
The design of the street pattern shall be based upon
consideration of factors such as topography, design of proximate streets,
ease of access to intermodal transportation hubs, access to existing
sidewalks, trails, bicycle paths and public transit, traffic calming
measures, and other traffic safety considerations.
(2)
The arrangement of streets in new subdivisions shall
make provision for the continuation of existing streets in adjoining
areas, or their proper extension where adjoining land is not subdivided,
as may be deemed necessary for public requirements.
(3)
Public right-of-way street widths shall be measured at right angles or radial to the center line of the street and shall be 50 feet in width. Actual roadway widths shall be determined by Chapter 161, Highway Specifications. Roadways shall have a minimum of two lanes.
(4)
Whenever possible, streets should intersect at right
angles, but in any event not at angles of less than 60°.
(5)
Cul-de-sac streets:
(a)
Unless there is the expectation of extending
the street through to the adjoining property, a cul-de-sac street
shall not be placed so that it ends on the property line of the subdivision.
(b)
A cul-de-sac should not exceed 800 in length,
as measured from the center line of the street at the open end to
the radius point of the turnaround.
(c)
All residential culs-de-sac shall have a turnaround
at the end of the street which shall have a right-of-way radius of
50 feet. The curb at the turn shall have a minimum radius of 44 feet.
(d)
In a commercial or industrial subdivision, a
cul-de-sac should be avoided whenever possible unless the right-of-way
radius is designed at a minimum of 75 feet and the curb radius is
designed at 65 feet.
(6)
If a dead-end street is of a temporary nature, a turnaround
shall be provided and provision made for future extension of the street
and the reversion of the excess right-of-way of such temporary turnaround
to the adjoining properties.
(7)
Streets and rights-of-way less than the required minimum
of 50 feet shall not be permitted, except that wherever a proposed
subdivision borders an existing street or right-of-way less than the
required minimum width, the Planning Board shall require that the
other part of the street or right-of-way be platted in the proposed
tract if it is found that such a requirement would increase the effectiveness
of the circulation system in the area.
(8)
Multiple intersections involving a junction of more
than two streets shall be prohibited.
(9)
Arterial streets shall not intersect with local residential
streets and residential collector streets less than 800 feet apart,
measured from center line to center line.
(10)
To avoid confusion, no street shall have a name
which will duplicate or nearly duplicate the names of existing streets
within the Town. The continuation of an existing street shall have
the same name. All proposed street names are subject to approval of
the Town Engineering Office and/or the Highway Superintendent.
(11)
The minimum radius of horizontal curve, minimum
length of vertical curves, and minimum length of tangents between
reverse curves shall be in accordance with specifications established
by the Town Highway Superintendent and/or Town Engineering Office,
and shall be approved prior to final approval of the final plat by
the Planning Board.
(12)
New streets shall be located to provide adequate
sight distance on any adjacent public road in both directions from
the interior road in accordance with the current edition of the American
Association of State Highway and Transportation Officials (AASHTO).
(13)
New streets shall not be placed so as to intersect
another street directly opposite an existing or proposed residence.
(14)
Any crossing of the Long Island Rail Road right-of-way
within a subdivision will not be permitted.
(15)
Except in a conservation subdivision or open
development area, subdivisions where more than 300 feet of land fronts
on a public street shall provide access to proposed lots by way of
a new street. Multiple building lots and fronting of more than two
building lots on a existing street shall be prohibited. From an aesthetic
and speed control perspective, curving roads are preferred in an informal
rural cluster to avoid long straight segments. Shorter straight segments
connected by ninety-degree and one-hundred-thirty-five-degree bends
are preferred in a more formal or traditional arrangement.
(16)
Whenever appropriate, street systems should
produce vistas of open space.
(17)
The use of reverse curves should be considered
for local access streets in cluster development subdivisions in conjunction
with long horizontal curve radii (at least 250 feet) and where traffic
speeds will not exceed 30 miles per hour.
C.
Common driveways.
(1)
Common driveway access may be provided and shall be
required where street safety and traffic management goals would be
served.
(2)
The maximum number of lots using a proposed common
driveway shall be two if the common driveway has one entrance on a
public road. Each lot shall have their access on the common driveway,
regardless of the potential for access onto an existing Town, county
or state road.
(3)
The boundary of each lot served by a common driveway
shall extend to the center line of the common driveway with the right-of-way
for ingress and egress across the common driveway granted to each
lot served by such common driveway.
(4)
In the case of a conservation subdivision, the Planning
Board may, in its discretion, require professional engineer's drawings
showing the exact location, dimensions and grade of the common driveway
and specifications for its composition. The Planning Board may refer
these drawings to the Town Engineering Office for review and comment.
(5)
The subdivision plat shall show the road clearly labeled
as "common driveway."
(6)
The common driveway may not be offered for dedication
to the Town of Southold.
(7)
The Planning Board shall require a recorded maintenance
agreement executed by the applicant as a condition of subdivision
approval.
D.
Flag lots. The Planning Board may permit a limited
number of flag lots in a residential subdivision plat, provided that
they are well shaped, they are generally larger than usual lots, their
accessway is essentially straight and not excessive in length and
their arrangement will not create traffic difficulties on the street
system and would not be a means to circumvent a standard lot and street
arrangement which might otherwise result in a generally better platting
of the subdivision and adjacent lands.
(1)
To assure that the flag lot is of adequate size and
shape, a flag lot located within the residential zones shall contain
at least the minimum lot area of the applicable zoning district in
which it is situated, within the bulk of the lot, exclusive of the
area contained in the flagpole access strip.
(2)
In allowing flag lot arrangements in subdivision,
the Planning Board may require either a formal private lane or common
access driveway to service such lots and may require that such lanes
or common access driveways be made part of the improvements to be
undertaken and made part of a performance bond.
(3)
The Planning Board may adopt further policies or regulations
to assure compliance with these requirements, including design and
legal specifications for the creation of lanes and common access driveways
over such flag lot arrangements.
Streetlighting shall be provided along all streets
in the subdivision and along all streets upon which the subdivision
abuts, as required by the Town Engineering Office and/or the Highway
Superintendent. Public safety, power conservation and preservation
of the night sky shall be of primary consideration in choosing the
design, location and number of lighting fixtures. Fixtures must be
designed to hide the source of illumination from the side and must
direct the light downward.
All wastewater treatment systems shall be installed
in accordance with plans approved by the Suffolk County Health Department.
Such systems shall provide each residence and other structures containing
plumbing fixtures with an adequate and safe method of sewage treatment.
Where a public sewage treatment system is not available, an adequate
private wastewater treatment system, approved by the Suffolk County
Health Department, shall be provided.
All water supply systems shall be installed
pursuant to plans approved by the Suffolk County Health Department.
Such systems shall be designed to provide a sufficient supply of potable
water, under adequate pressure, to all outlets, including, but not
limited to, residences, other structures, drinking fountains, hose
connections, hydrants. Where a public water supply system is not available,
an adequate private water supply system, approved by the Suffolk County
Health Department, shall be provided.