Abutters appealed approvals of a definitive subdivision plan of land located partly in the town of Mention and partly in the town of Hopedale. A Land Court judge determined that the subdivision proponent, Black Brook Realty Corporation (Black Brook), did not have the legal right to use certain of the land that provided access from the exterior of the subdivision to the nearest adjacent public way. Black Brook appeals the judg*309ments annulling the approvals by the towns’ planning boards of the definitive subdivision plan. We affirm.

Black Brook requested from the Mention and Hopedale planning boards their approvals of a forty-two lot subdivision that was located partly in each town. As shown on the sketch in the Appendix to this opinion, the plan contains two connection points of its interior ways with Overdale Parkway (parkway), a roadway exterior to the subdivision and owned by the town of Hopedale, though not established as a public way. Black Brook intended to reach the closest public way, Freedom Street, exclusively by way of the parkway. The two boards approved the subdivision. The Hopedale board did not consider the abutters’ objection that Black Brook had no legal right to use the parkway. That board commented that “[tjhis is a legal issue and will not be determined by the [bjoard.” The abutters appealed pursuant to G. L. c. 41, § 81BB, and a Land Court judge annulled the decisions of both boards after determining that Black Brook lacked the legal right to use at least the unpaved portion of the parkway, an essential component of the subdivision’s proposed access to Freedom Street.

The judge noted that the rules and regulations of neither board expressly require that the applicant have rights in the adjacent ways if they are necessary components of the proposed access to public ways. He considered whether the absence of such regulations made consideration of legal access ultra vires to the boards’ evaluation and approval of the plan. He concluded that this case, like Beale v. Planning Bd. of Rockland, 423 Mass. 690, 694-697 (1996) (Beale), is an exception to Castle Estates, Inc. v. Park & Planning Bd. of Medfield, 344 Mass. 329, 334 (1962) (Castle Estates), and that the general purposes clause in G. L. c. 41, § 81M, provides authority for the boards, and the reviewing court, to consider Black Brook’s legal right to the access road outside the subdivision, even absent express regulation. We agree.

Castle Estates reiterated that planning board regulations must be “comprehensive, reasonably definite, and carefully drafted, so that owners may know in advance what is or may be required of them and what standards and procedures will be applied to them.” 344 Mass, at 334. The court said that “[wjithout such

*310regulations, the purposes of the law may easily be frustrated.” Ibid. “A planning board exceeds its authority if requirements are imposed beyond those established by the rules and regulations.” Beale, 423 Mass, at 696. In Beale, the court held that the planning board’s authority under the general purposes clause (G. L. c. 41, § 81M) to enforce the zoning by-laws provided a basis for the disapproval of the subdivision plan, where the proposed use of the land in question, to provide access to a proposed retail shopping mall on adjacent land in another town, was not an allowable use in the district and would violate the zoning by-law. Id. at 693-697. Section 81M of G. L. c. 41, as amended by St. 1969, c. 884, § 2, expressly admonishes planning boards to exercise their powers under the subdivision control law “with due regard for the provision of adequate access to all of the lots in a subdivision by ways that will be safe and convenient for travel. . . and for coordinating the ways in a subdivision with each other and with the public ways in the city or town in which it is located and with the ways in neighboring subdivisions.” The court in North Landers Corp. v. Planning Bd. of Falmouth, 382 Mass. 432, 436-437 (1981), affirmed the authority of a planning board to evaluate the adequacy of ways outside the subdivision, under a properly drawn local subdivision regulation.2 Black Brook relies upon Hahn v. Planning Bd. of Stoughton, 24 Mass. App. Ct. 553, 555-556 (1987), in its argument that the board and court are without authority to consider questions of Black Brook’s rights in the parkway, and that a planning board may not consider the matter of title. However, Hahn stands for the more limited proposition that a planning board’s subdivision approval is not invalid because it fails to determine questions of the subdivider’s title, where those questions do not adversely affect development or use of the subdivision. By contrast, the abutters’ challenge to Black Brook’s rights in the parkway goes to the very heart of the proposed development — the locus has been left without one of the two means of access upon which the boards *311predicated their approvals. It is well settled that a planning board is entitled to require an applicant for subdivision approval to demonstrate ownership of the subdivided land. Batchelder v. Planning Bd. of Yarmouth, 31 Mass. App. Ct. 104, 107-108 (1991). The regulations of the Hopedale and Mention planning boards have such an express requirement. Ownership of access rights on which the proposed subdivision depends is no less consequential.

Judgments affirmed.

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