I. From and after the time when a planning board shall expressly have been granted the authority to approve or disapprove plats by a municipality, as described in RSA 674:35, no building shall be erected on any lot within any part of the municipality nor shall a building permit be issued for the erection of a building unless the street giving access to the lot upon which such building is proposed to be placed:
(a)Shall have been accepted or opened as, or shall otherwise have received the legal status of, a class V or better highway prior to that time; or
(b)Corresponds in its location and lines with:
(1)A street shown on the official map; or
(2)A street on a subdivision plat approved by the planning board; or
(3)A street on a street plat made by and adopted by the planning board; or
(
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I. From and after the time when a planning board shall expressly have been granted the authority to approve or disapprove plats by a municipality, as described in RSA 674:35, no building shall be erected on any lot within any part of the municipality nor shall a building permit be issued for the erection of a building unless the street giving access to the lot upon which such building is proposed to be placed:
(a) Shall have been accepted or opened as, or shall otherwise have received the legal status of, a class V or better highway prior to that time; or
(b) Corresponds in its location and lines with:
(1) A street shown on the official map; or
(2) A street on a subdivision plat approved by the planning board; or
(3) A street on a street plat made by and adopted by the planning board; or
(4) A street located and accepted by the local legislative body of the municipality, after submission to the planning board, and, in case of the planning board's disapproval, by the favorable vote required in RSA 674:40; or
[Paragraph I(c) effective until July 1, 2026; see also paragraph I(c) set out below.]
(c) Is a class VI highway, provided that:
(1) The local governing body after review and comment by the planning board has voted to authorize the issuance of building permits for the erection of buildings on said class VI highway or a portion thereof; and
(2) The municipality neither assumes responsibility for maintenance of said class VI highway nor liability for any damages resulting from the use thereof; and
(3) Prior to the issuance of a building permit, the applicant shall produce evidence that notice of the limits of municipal responsibility and liability has been recorded in the county registry of deeds; or
[Paragraph I(c) effective July 1, 2026; see also paragraph I(c) set out above.]
(c) Is a class VI highway, provided that the applicant:
(1) Signs a liability waiver acknowledging that the:
(A) Municipality shall not maintain the highway nor provide any services to any lot accessible by the highway;
(B) Municipality shall not accept any responsibility for losses or damages caused by a lack of services; and
(C) Responsibility for such services falls solely on the applicant; and
(2) Prior to the issuance of a building permit, produces evidence that this waiver has been recorded in the county register of deeds; and
(3) Prior to the issuance of a building permit, proves the lot and any buildings thereon are insurable; or
(d) Is a private road, provided that:
(1) The local governing body, after review and comment by the planning board, or after establishing that the private road identifies and complies with policy adopted by the governing body of the municipality, has voted to authorize the issuance of building permits for the erection of buildings on said private road or portion thereof; and
(2) The municipality neither assumes responsibility for maintenance of said private roads nor liability for any damages resulting from the use thereof; and
(3) Prior to the issuance of a building permit, the applicant shall produce evidence that notice of the limits of municipal responsibility and liability has been recorded in the county registry of deeds for the lot for which the building permit is sought; or
(e) Is an existing street constructed prior to the effective date of this subparagraph and is shown on a subdivision plat that was approved by the local governing body or zoning board of adjustment before the municipality authorized the planning board to approve or disapprove subdivision plats in accordance with RSA 674:35, if one or more buildings have been erected on other lots on the same street.
II. Whenever the enforcement of the provisions of this section would entail practical difficulty or unnecessary hardship, and when the circumstances of the case do not require the building, structure or part thereof to be related to existing or proposed streets, the applicant for such permit may appeal from the decision of the administrative officer having charge of the issuance of permits to the zoning board of adjustment in any municipality which has adopted zoning regulations in accordance with RSA 674, or, in municipalities in which no board of adjustment exists, to the local legislative body, or to a board of appeals, whichever is appropriate, in accordance with RSA 674:14 and 674:15, including the requirement for a public hearing. In a municipality which does not require building permits, direct application may be made to the zoning board of adjustment, or the local legislative body, or the board of appeals for permission to erect the building. In passing on such appeal or application, the board of adjustment, local legislative body, or board of appeals may make any reasonable exception and shall have the power to authorize or issue a permit, subject to such conditions as it may impose, if the issuance of the permit or erection of the building would not tend to distort the official map or increase the difficulty of carrying out the master plan upon which it is based, and if erection of the building or issuance of the permit will not cause hardship to future purchasers or undue financial impact on the municipality. Any such decision made in this connection by a board of adjustment, local legislative body, or by a board of appeals pursuant to this section and RSA 674:14 and 674:15 shall be in writing, together with the reasons for the decision, and shall be subject to review in the manner described in RSA 677.
II-a. Municipalities may except any lot, including island lots for islands served exclusively by boats, from the requirements of paragraphs I and II by an affirmative vote of the local legislative body pursuant to RSA 675, first submitted to the planning board for its approval and:
(a) If approved by the board, approved by a majority of those present and voting at a regular or special meeting of the local legislative body; or
(b) If disapproved by the planning board, approved by not less than 2/3 of those present and voting at a regular or special meeting of the local legislative body.
III. This section shall supersede any less stringent local ordinance, code or regulation, and no existing lot or tract of land shall be exempted from the provisions of this section except in accordance with the procedures expressly set forth in this section. For purposes of paragraph I, "the street giving access to the lot" means a street or way abutting the lot and upon which the lot has frontage. It does not include a street from which the sole access to the lot is via a private easement or right-of-way, unless such easement or right-of-way also meets the criteria set forth in subparagraphs I(a), (b), (c), (d), or (e).
IV. In addition to the requirements for the erection of buildings in paragraph I and notwithstanding the exceptions provided in paragraph II, the planning board for a county in which there are located unincorporated towns or unorganized places shall require every building which is erected on leased land located within an unincorporated town or unorganized place to have a building permit. A building permit shall be required under this paragraph regardless of the proximity of the building to any street or highway. The county shall, by resolution, authorize the planning board to issue building permits under this paragraph.