A. 
Streets.
(1) 
The arrangement, character, extent, width, grade and location of all streets shall conform to the Official Map and the Comprehensive Plan and shall be considered in relation to existing and planned streets, to topographic conditions, to public convenience and safety and in their appropriate relation to the proposed use of the land to be served by such streets.
(2) 
Where such is not shown in the Official Map or Comprehensive Plan, the arrangement of streets in a subdivision shall either:
(a) 
Provide for the continuation or projection of existing principal streets in surrounding areas; or
(b) 
Conform to a plan for the neighborhood approved or adopted by the Planning Board to meet a particular situation where topographic or other conditions make continuance of or conformance with existing streets impracticable.
(3) 
Minor streets shall be so laid out that their use by through traffic will be discouraged.
(4) 
Where a subdivision abuts or contains an existing or proposed arterial street, the Planning Board may require that ingress and egress to all lots abutting such arterial street be provided by a marginal access street.
(5) 
Where a subdivision borders on or contains a railroad right-of-way or limited access highway right-of-way, the Planning Board may require a street approximately parallel to and on each side of such right-of-way at a distance suitable for the appropriate use of the intervening land, as for park purposes in residential districts or for commercial or industrial purposes in appropriate districts. Such distances shall also be determined with due regard for the requirements of approach grades and future grade separations.
(6) 
Reserve strips controlling access to streets shall be prohibited except where their control is definitely placed in the Town under conditions approved by the Planning Board.
(7) 
A street intersection shall not be less than 125 feet removed from the nearest street intersection.
(8) 
A tangent at least 100 feet long shall be introduced between reverse curves on arterial and collector streets.
(9) 
When continuing street lines (projected right-of-way tangents) deflect from each other at any one point by more than 10º, they shall be connected by a curve with a radius at the inner street right-of-way of not less than 350 feet, and, where continuing street lines of arterial streets deflect from each other by more than 5º, they shall be connected by a curve with a radius of not less than 800 feet.
(10) 
Streets shall be laid out so as to intersect as nearly as possible at right angles, and no street shall intersect any other street at less than 75º. Any change in street alignment to meet this requirement shall occur at least 100 feet from the intersection.
(11) 
Intersections of minor streets with arterial or collector streets should be held to a minimum to avoid hazard and delay.
(12) 
Property lines at street intersections shall be rounded with a radius of 10 feet, or of a greater radius, where the Planning Board may deem it necessary. The Planning Board may permit comparable cutoffs or chords in place of rounded corners.
(13) 
Street right-of-way widths shall be as shown on the Official Map or Comprehensive Plan and where not shown therein shall be not less than as follows:
(a) 
Arterial: as determined by state or county road authorities.
(b) 
Collector: 60 feet.
(c) 
Minor: 50 feet.
(d) 
Marginal access: 50 feet.
(14) 
Half-width streets shall be prohibited except where it is necessary to provide the remaining half of a previously approved half-width street.
(15) 
Culs-de-sac shall not be longer than 1,200 feet and shall be provided with a turnaround having an outside right-of-way diameter of 125 feet.
(16) 
Temporary turnarounds shall have a diameter of 100 feet and should be shown on the map with arrangements for that portion of the right-of-way of the street to revert to the abutting property owners upon continuation of the street.
(17) 
No street names shall be used which will duplicate or be confused with names of existing streets. Street names shall be subject to the approval of the Planning Board and should follow standard procedures of house numbering.
(18) 
Street grades shall conform to the following:
Street Type
Grade
Arterial
As determined by state or county road authorities
Collector
5%, and in no case shall it be waived to exceed 7%
Minor
10%, and in no case shall it be waived to exceed 12%
Marginal access
Same as arterial
(19) 
Where street grades exceed 5%, gutters should be paved in accordance with the requirements of the Engineer.
(20) 
No street grade shall be less than 0.5%.
B. 
Service drives.
(1) 
Service drives may be provided in residential, commercial and industrial districts as private accessways.
(2) 
The width of a service drive shall be not less than 20 feet.
(3) 
Service drive intersections and sharp changes in alignment shall be avoided, but, where necessary, corners shall be cut off sufficiently to permit safe vehicular movements.
(4) 
Dead-end service drives shall be avoided when possible but if unavoidable shall be provided with adequate turnaround facilities at the dead end as determined by the Planning Board.
C. 
Easements.
(1) 
Easements across lots or centered on rear or side lot lines shall be provided for utilities where they are anticipated. The Planning Board may require easements of such widths as it deems necessary.
(2) 
Drainage.
(a) 
All subdivisions shall be related to the drainage pattern affecting the areas involved, with proper provision to be made for adequate storm drainage facilities. Storm drainage plans shall reflect potential surface runoff within the drainage area after development and shall comply with the requirements of the designated Engineer of the Town or the Town Planning Board.
(b) 
Where a subdivision is traversed by a watercourse, drainageway, channel or stream, there shall be provided a stormwater easement or drainage right-of-way conforming substantially to the lines of such watercourse and of such width and construction as will be adequate for the purpose. Parallel streets or pathways may be required in connection herewith.
(c) 
Rights-of-way for storm drainage must be sufficient for facilities to handle not only the anticipated discharge from the property being subdivided but also the anticipated runoff that will occur when property at a higher elevation in the drainage basin is developed.
D. 
Blocks.
(1) 
The length, width and shape of blocks shall be determined with due regard to:
(a) 
Provision of adequate building sites suitable to the special needs of the type of use contemplated.
(b) 
Zoning requirements as to lot sizes and dimensions.
(c) 
Limitations and opportunities of topography.
(2) 
Pedestrian crosswalks, not less than 10 feet wide, shall be required where deemed essential to provide circulation or access to schools, playgrounds, shopping centers, transportation and other community facilities.
E. 
Lots.
(1) 
The lot size, width, depth, shape and orientation and the minimum building setback lines shall be appropriate for the location of the subdivision and for the type of development and use proposed.
(2) 
Corner lots for residential use shall have extra width to permit appropriate building setback from and orientation to both streets.
(3) 
The subdividing of land shall be such as to provide, by means of public street, each lot with satisfactory access to an existing public street or private street granted a variance pursuant to Town Law § 280-a.
(4) 
Lots providing public street access at both front and rear lot lines shall not be permitted, except as authorized by the Planning Board. To provide separation of residential development from traffic arteries or to overcome specific disadvantages of topography and orientation, the Planning Board may require a planting screen easement having a maximum of 10 feet along the lines of lots abutting such traffic artery or other disadvantageous use.
(5) 
Side lot lines shall be substantially at right angles or radial to street lines.
(6) 
Lots adjacent to pedestrian crosswalks shall have additional side yard requirements as deemed necessary by the Planning Board.
(7) 
Minimum lot sizes shall be as follows:
(a) 
Fifteen thousand square feet in subdivisions not served by a central sewage disposal system. Such lots shall have not less than 100 feet of frontage measured along the boundary of the facing public street.
(b) 
Twelve thousand five hundred square feet in subdivisions served by either a central water supply or a central sewage disposal system. Such lots shall have not less than 100 feet of frontage measured along the boundary of the facing public street.
(c) 
Ten thousand square feet in subdivisions served by both a central water supply and central sewage disposal systems. Such lots shall have not less than 80 feet of frontage along the boundary of the facing public street.
F. 
Public sites and open spaces.
(1) 
Where a proposed park, playground, school or other public use shown in a Comprehensive Plan is located in whole or in part in a subdivision, the Planning Board may require the dedication or reservation of such area within the subdivision in those cases in which the Planning Board deems such requirements to be reasonable.
(2) 
Where deemed essential by the Planning Board, upon consideration of the particular type of development proposed in the subdivision, and especially in large-scale neighborhood unit developments not anticipated in the Comprehensive Plan, the Planning Board may require the dedication or reservation of such other areas or sites of a character, extent and location suitable to the needs created by such development for schools, parks and other neighborhood purposes.
(3) 
Where dedication is required, in no case shall the Planning Board require that more than 10% of the gross area of the subdivision be so dedicated. Irrespective of the size of the subdivision, the minimum area acceptable in fulfillment of this provision shall be three acres.
(4) 
In cases where the Board finds that due to size, topography or location of a subdivision, the requirement for land dedication would be unreasonable or undesirable, or in the event that the Board requires less than 10% of the gross area of the subdivision to be so dedicated, the Board shall waive the requirement for the dedication of 10% of the gross area or such portion thereof as it deems suitable. In the event that such dedication is waived, it shall require that a fee for each proposed lot in the subdivision be paid into a special fund for the future acquisition and/or improvement of recreational facilities in the Town in accordance with Chapter 66, Planning Board and Zoning Board of Appeals, Article I, Fees, of the Code of the Town of Thompson.
(5) 
Unusable areas or areas bordering streams, lakes or other watercourses can be given special consideration by the Planning Board in excess of the minimum. The Town may accept these areas as a gift or purchase them, should they be desirable for public open spaces.
(6) 
Where such sites and open spaces are not shown on the Comprehensive Plan and where deemed essential by the Planning Board upon consideration of the particular type of development proposed in the subdivision, and especially in large-scale developments, the Planning Board may require the dedication or reservation of areas in excess of the minimum. Under such conditions a money payment at fair market value may be made to the owner to compensate his loss in excess of the minimum dedication.
(7) 
Notwithstanding anything set forth in this article, the public site and open space provisions and fees are not applicable to minor subdivisions.
G. 
Street trees.
(1) 
No trees shall be planted within the street right-of-way.
(2) 
There shall be at least one tree per lot and two trees per lot on corner lots.
(3) 
Trees planted should be five to 10 feet from the sidewalk (or its ultimate location) in the direction of the house, the exact distance to depend on the average height of the grown tree.
(4) 
New trees shall be no less than 2 1/2 inches in circumference as measured at a point three feet above the ground.