The purpose of conservation subdivision development is to allow design flexibility, preserve important natural attributes of the land while ensuring that development occurs on the land that is best suited for development and that environmental resources are protected.
A. 
For major subdivisions, the Planning Board may require conservation subdivisions. In order for the Planning Board to make such a determination, at least one of the following conditions shall be found on the parcel:
(1) 
The land contains significant resources with conservation value;
(2) 
The parcel adjoins other land that, when combined with open space on the parcel, would result in a substantial amount of land with conservation value (including any portion of a designated trail corridor), regardless of whether or not the adjoining parcels have been protected as open space;
(3) 
That there are unique and extraordinary physical, environmental, or cultural circumstances on the parcel, which demonstrate that conservation subdivision is the most appropriate method of subdivision.
B. 
The following conservation subdivision process may be applied to minor subdivisions at the request of the applicant and the agreement of the Planning Board.
The conservation subdivision process involves the following steps:
A. 
Conservation analysis.
B. 
Sketch plan.
C. 
Preliminary plat review.
D. 
Final plat review.
A. 
Applicants shall prepare a conservation analysis, consisting of inventory maps, survey and topographic maps, written description of the land, and a written analysis of the conservation value of various site features.
B. 
The conservation analysis shall identify site features with conservation value on the parcel, including, but not limited to, the following:
(1) 
Constrained acreage, as defined in § 250-116E below.
(2) 
Active farmland, agriculture districts, prime agricultural soils and/or soils of statewide importance for farming.
(3) 
Existing or proposed public trail corridors.
(4) 
Scenic viewsheds as may be defined in any natural resources inventory or similar plan adopted by resolution of the Town Board.
(5) 
Unique geological features.
(6) 
Documented aquifers and aquifer recharge areas.
(7) 
Sites identified as historic on any federal, state, or local register of historic places.
(8) 
Public parks and publicly accessible recreation lands.
(9) 
Unfragmented forestland.
(10) 
Buffer areas necessary for screening new development and existing mining operations from adjoining parcels and from other publicly accessible areas, including roads, parkland, and nature preserves.
(11) 
Stone walls.
(12) 
Highly erodible soils.
(13) 
Trees 30 inches in diameter or larger when measured 4 1/2 feet above the adjacent grade, which are of sound health and provide a unique character to the site.
(14) 
If requested by the Planning Board after the initial submission of the conservation analysis, other land area exhibiting present or potential future recreational, historic, ecological, agricultural, water resource, scenic or other natural resource value.
C. 
The conservation analysis shall result in a composite map (i.e., overlay map) based on the information collected above, and shall identify areas that are suitable for development and those lands which have conservation value and may be unsuitable for development.
A. 
The Planning Board shall make a determination as to which land has significant conservation value and should be protected from development by conservation easement or deed restriction. This determination shall be based upon an analysis that weighs the relative importance of the environmental resources on the site and shall be expressed in a written report supporting its decision (the conservation findings). The Planning Board may incorporate information provided by, but not limited to, its own research, site visits, consultants, other qualified experts or agencies or from public comments. If, as a result of the SEQRA review, information arises to cause the conservation analysis to change, such change will be made at that time, by the Planning Board, in its sole discretion.
B. 
The outcome of the conservation analysis and the Planning Board's conservation findings shall be used as the basis for sketch plan review.
A. 
The density is the developable area divided by the minimum lot size as provided in the Dimensional Table.[1]
[1]
Editor's Note: See § 250-20B of this chapter.
B. 
The permitted density shall not be reduced as a result of the conservation analysis.
C. 
The density established shall be no greater than normally permitted under a conventional subdivision except as allowed herein.
D. 
The Planning Board shall first determine the developable or "unconstrained land."
E. 
To determine the developable land area, subtract the constrained land from the total acreage of the parcel. Constrained land includes:
(1) 
Delineated wetlands (New York State Department of Environmental Conservation and United States Army Corps of Engineers). For wetlands falling under the jurisdiction of the NYS DEC, any upland buffer areas as defined by the NYS DEC shall also be included in constrained land calculations.
(2) 
Watercourses/water bodies.
(3) 
One-hundred-year floodplains.
(4) 
Slopes over 15% which are 2,000 square feet or more of contiguous sloped area.
F. 
Fifteen-percent-development-loss factor, to take into account loss of developable area to roadways, stormwater areas, and drainage or utility easements. The residential density shall equal the developable area divided by the permitted number of acres per unit (the minimum lot size) for each zoning district. All fractional units shall be rounded down.
G. 
Prior to the establishment of the overall density, the owner may provide the Planning Board with a preliminary plat of the site showing how it may be subdivided in a conventional manner conforming to the requirements of this chapter for that district or districts.
H. 
At least 40% of the total acreage shall be preserved by conservation easement or deed restriction and shown as such on the sketch plan, based upon the conservation analysis.
(1) 
Applicants wishing to conserve greater than 40% open space may receive additional density on the site, as follows:
(a) 
Additional 20% density allowed if public access is provided to the protected open space.
(b) 
Additional 10% density allowed for every 10% of additional open space protected on the parcel.
I. 
The maximum additional density bonus shall be capped at 40% above the density otherwise allowed.
A. 
At the conclusion of the conservation analysis process, a sketch plan shall be submitted.
B. 
The sketch plan shall show the following:
(1) 
Preferred locations for intensive development as well as acceptable locations for less dense development.
(2) 
Proposed lot locations and roads.
(3) 
Land to be permanently preserved and recommended conservation uses, ownership, and management guidelines for such land. The open space protected pursuant to this section must have conservation value, which shall be determined in the course of the conservation analysis.
(4) 
Land suitable for stormwater management facilities, which may be located within the preserved land area.
Once the sketch plan is approved, the applicant must follow all processes and requirements pertaining to preliminary and final plat for major subdivisions pursuant to Chapter 225, Subdivision of Land.
A. 
The Planning Board shall determine appropriate lot sizes in the course of its review of a conservation subdivision based upon the criteria established in this section and the requirements of the Rensselaer County Department of Health, New York State Department of Health, Town services and/or private water/sewage systems may be used to meet the these requirements.
B. 
In order to permit a clustered lot configuration, wells and septic systems may be located in areas of protected open space, provided that necessary easements are provided for maintenance of these facilities.
C. 
The applicant shall specify dimensional requirements for a proposed conservation subdivision by identifying setbacks and other lot dimensions to be incorporated into the final plat.
The Planning Board may entertain an application to develop a portion of a parcel if a conservation analysis is provided for the entire parcel.
The following guidelines should be considered and may be required in the process of designing and siting houses in a conservation subdivision. When locating new houses on the land there are many options in the siting, configuration, size and arrangement of elements in the landscape. These choices define the character of the developed landscape environment. These guidelines are examples of the preferred method to design and site uses but should not be considered the only acceptable solution.
A. 
Preservation of scenic features. Relate the location of structures to existing scenic features such as individual large trees within open fields, stone walls, hedgerows, historic buildings, and unpaved country roads if they exist on the site. Avoid locating structures in areas which disrupt the relationship of the rural features. Locating structures in the midst of an open field is discouraged.
B. 
Placement of structures. Wherever practical, structures shall be sited to be as visually inconspicuous as possible, when seen from a distance and from lower elevations, and to minimize impact on open and agricultural lands. Wherever possible, the Planning Board may require that structures be located at the edge of the agricultural land to minimize the loss of such land.
C. 
Vegetation. Existing vegetation on site shall be preserved to the maximum extent practical. Every attempt shall be made to limit cutting necessary for either construction or the opening of views from the subject site so as to maintain native vegetation as a screen for structures as seen from public roads or parks or other public views.
D. 
Wherever practical, buildings shall be sited so that they do not protrude above treetops and ridgelines of hills as seen from public places and roads. This shall not be interpreted to mean that the buildings should not be seen, only that they should not protrude above the trees or hilltops.
E. 
Wherever practical, all electric, telephone, television, and other communication lines, both main and service connections, servicing new development, shall be provided by underground wiring installed in accordance with the prevailing standards and practices of the utility or other companies providing such services.
The Planning Board, subject to the approval of the Town Board, may require an applicant for conservation subdivision to deposit in an escrow account a reasonable amount established by the Planning Board to pay the fees and/or costs of any consultant, engineer, or attorney designated by the Town Board to review the application. The fees and/or costs charged by such consultant, engineer, or attorney in connection with such review will be charged against the sum deposited in escrow. If specific circumstances warrant it, additional funds will be required to be deposited in order to cover reasonable expenses incurred beyond the original estimate. Any amount remaining shall be returned to the applicant within 45 days of final action on the application. Payment to the escrow account, if required, is a prerequisite to a complete application, and no review will be initiated until payment is received. The deposit specified above does not include all approvals or fees required from or by agencies other than the Town, costs associated with extensions to districts to provide necessary services to the proposal nor fees charged by Town departments or boards for permits, approvals, hearings, or other actions, except as noted above.
A. 
Open space set aside in a conservation subdivision shall be permanently preserved as required by this section. Developed lands shall not impact the conservation value of the permanent open space.
B. 
The open space protected pursuant to this section must have conservation value as determined by the conservation findings.
C. 
Permanent preservation.
(1) 
A permanent deed restriction or a conservation easement restricting development of the open space land and allowing use only for agriculture, forestry, passive recreation, protection of natural resources, or similar conservation purposes shall be granted with the approval of the Planning Board. Such deed restriction or conservation easement shall be approved by the Planning Board and shall be required as a condition of final plat approval.
(2) 
The permanent protection shall prohibit residential, industrial, or commercial use of open space land, including power generation facilities (except in connection with agriculture, forestry, and passive recreation), and shall not be amendable to permit such use. Access roads, driveways, wells, underground sewage disposal facilities, local utility distribution lines, stormwater management facilities, trails, temporary structures for passive outdoor recreation, and agricultural structures shall be permitted on preserved open space land with Planning Board approval, provided that they do not impair the conservation value of the land. Forestry shall be conducted in conformity with applicable best management practices.
D. 
Permanent open space may be preserved as a portion of one or more large lots or may be contained in a separate open space lot.
Preserved open space land shall be clearly delineated and labeled on the subdivision final plat as to its use, ownership, management, method of preservation, and the rights, if any, of the owners of lots in the subdivision and the public to the open space land. The final plat shall clearly show that the open space land is permanently preserved for conservation purposes required by this chapter, and shall include deed recording information in the County Clerk's office.
A. 
Open space land shall under all circumstances be protected but may be owned in common by a homeowners' association (HOA), offered for dedication to Town, county, or state governments, transferred to a nonprofit organization acceptable to the Planning Board, held in private ownership, or held in such other form of ownership as the Planning Board finds appropriate to properly manage the open space land and to protect its conservation value.
B. 
If the land is owned in common by an HOA, such HOA shall be established in accordance with the following:
(1) 
The HOA must be established before the approved subdivision final plat is signed, and must comply with all applicable provisions of the General Business Law[1] and filed with the Town Clerk.
[1]
Editor's Note: See NY Gen Bus § 1 et seq.
(2) 
Membership must be mandatory for each lot owner, who must be required by recorded covenants and restrictions to pay fees to the HOA for taxes, insurance, and maintenance of common open space, private roads, and other common facilities.
(3) 
The HOA must be responsible for liability insurance, property taxes, and the maintenance of recreational and other facilities and private roads.
(4) 
The HOA must be able to adjust the fees to meet changed needs.
(5) 
The applicant shall make an irrevocable, conditional offer of dedication to the Town, binding upon the HOA, for all open space to be conveyed to the HOA. Such offer may only be accepted upon any one of the following circumstances:
(a) 
Upon the failure of the HOA to take title to the open space from the applicant or other current owner;
(b) 
Upon dissolution of the association at any future time;
(c) 
Upon failure of the HOA to fulfill its maintenance obligations hereunder; or
(d) 
Upon failure to pay its real property taxes.
C. 
Ownership shall be structured in such a manner that real property taxing authorities can satisfy property tax claims against the open space lands by proceeding against individual owners in the HOA and the dwelling units they each own.
D. 
The Town's counsel shall find that the HOA documents presented satisfy the conditions stated above, and such other conditions as the Planning Board shall deem necessary.
A. 
Ongoing maintenance standards shall be established, enforceable by the Town against an owner of open space land as a condition of subdivision approval, to ensure that the open space land is not used for any purpose or structure prohibited by the conservation easement or for the storage or dumping of any matter, including, but not limited to, fill, refuse, junk, or other offensive or hazardous materials.
B. 
If the Town Board finds that the provisions above are being violated, it may, upon 30 days' written notice to the owner, enter the premises for necessary maintenance, and the cost of such maintenance by the Town shall be assessed ratably against the landowner or, in the case of an HOA, the owners of properties within the development, and shall, if unpaid, become a tax lien on such property or properties.