The Supreme Judicial Court upheld the MBTA Communities Act on Friday, rejecting every argument the town of Marshfield made against it and affirming the dismissal of the town’s lawsuit in full. The decision in Town of Marshfield v. Commonwealth, SJC-13840, was written by Justice Georges for a unanimous full bench and closes the most serious remaining legal challenge to the state’s signature housing law.
Marshfield had argued four things: that the law is an unfunded local mandate the town may ignore, that it violates the voting rights of town meeting voters, that it violates the Home Rule Amendment, and that it conflicts with the Zoning Act. The court rejected all four, and the way it rejected the first one is the part that will matter to every other town considering the same suit.
What the law requires
The MBTA Communities Act requires cities and towns served by or adjacent to the transit system to have at least one zoning district of reasonable size where multifamily housing is permitted as of right, without a special permit. It does not require anyone to build anything. It requires the zoning to allow it.
Compliance is enforced through eligibility for several state grant programs and, as the Attorney General has maintained, through the law’s status as a mandatory obligation rather than an optional one. Dozens of communities have adopted compliant zoning. Several have refused, and Marshfield’s suit was the vehicle for testing whether refusal was lawful.
The unfunded mandate argument, and why it failed
This was the town’s strongest claim and the one most widely repeated at town meetings across the state.
G.L. c. 29, § 27C, sometimes called the Local Mandate Law, provides that a state law or regulation imposing additional costs on a municipality is not effective in that municipality unless the state funds it. Towns have used it successfully before. Marshfield alleged it had incurred costs evaluating and preparing proposed zoning amendments and presenting them at town meetings, and that it expected more costs in future.
The court held the complaint did not plausibly allege a mandate within the statute’s meaning. On the costs already incurred, the complaint did “not allege facts that suggest those costs were involuntarily incurred and exceeded incidental local administration expenses.” The opinion describes incidental local administration expenses as relatively minor expenses related to managing municipal services, which are subordinate consequences of a municipality’s own choices about how to comply.
On future costs, the court was blunter. Marshfield alleged it expected “to incur additional costs as the direct result” of the act. Describing future costs as direct, the court said, “states a legal conclusion, not a well-pleaded fact.” The complaint did not identify the costs or explain how the act itself would impose them “rather than the town voluntarily assuming them because of local policy choices or other reasons.”
That reasoning has a consequence beyond Marshfield. A town that chooses an expensive path to compliance, holds multiple town meetings, commissions studies and hires consultants has generated costs from its own choices about how to comply, not from the mandate. Under this opinion those costs do not convert the law into an unfunded mandate. A different town with a better-pleaded complaint alleging specific, involuntary, non-incidental costs could try again, but the opinion makes that a narrow opening.
The standing holding
The court held that Marshfield and its select board lack standing to assert a constitutional voting rights claim on behalf of the town’s voters.
That is a conventional application of a settled principle and it deserves attention anyway, because it forecloses a common litigation posture. A municipality is a creature of the state. It cannot ordinarily assert the constitutional rights of its residents against the state that created it. If town meeting voters believe their voting rights were infringed, the plaintiffs would have to be voters, not the town.
Home rule
The Home Rule Amendment, article 89 of the Amendments to the Massachusetts Constitution, grants municipalities substantial local authority, and it is the provision most often invoked when the Legislature tells a town what its zoning must permit.
It has always had a large exception. Home rule does not limit the Legislature’s power to act by general law applying to a class of municipalities. The MBTA Communities Act applies to a defined class of communities by their relationship to the transit system, and zoning is an area the Legislature has regulated comprehensively through the Zoning Act since 1975. The court rejected the home rule challenge, as courts have consistently done when the Legislature legislates by general law in a field it already occupies.
The Zoning Act conflict
Marshfield argued the act conflicts with G.L. c. 40A, § 5, which governs how zoning bylaws are adopted, including the two-thirds town meeting vote. The court applied the ordinary rule that statutes are read to work together where possible, citing Peters v. Michienzi, 385 Mass. 533 (1982), for the proposition that “allegedly conflicting provisions of a statute should, if possible, be construed in a way that is harmonious and consistent with the legislative design.”
The two can be harmonized. Section 5 governs the procedure for adopting zoning. The MBTA Act governs what the zoning must contain. A town still votes, at town meeting, by the margin section 5 requires. What it cannot do is vote to be exempt from the substantive requirement.
What the decision does not decide
Three things worth stating plainly, because they will be misreported.
It does not require any town to build housing. The obligation is to zone for it.
It does not resolve what happens to a town that simply refuses. The remedy for noncompliance, whether that is loss of grant eligibility, an enforcement action by the Attorney General, or something else, was not the question before the court. Marshfield sought a declaration that it was exempt. It lost that. The consequences of continued refusal are a separate fight.
And it was decided on a motion to dismiss. The court accepted the complaint’s well-pleaded facts as true and still found them insufficient, which is a stronger result for the Commonwealth than a win after trial would have been on some measures and a narrower one on others. The holding is that this complaint failed, and the opinion goes out of its way to describe what a sufficient pleading would have had to allege.
Why it matters now
The housing fight is on the November ballot in a different form. Question 7 would set limits on minimum lot sizes for single-family homes, which is the same argument about who controls local zoning, run through the initiative process rather than the courts. We cover it in our guide to every question on the ballot.
The decision also lands in the middle of a separate municipal control fight over data centers, where towns are exercising exactly the zoning authority Marshfield says the Legislature took from it. The difference is that nothing in state law requires a town to permit a data center, and the MBTA Act does require multifamily zoning. That is the line this opinion draws, and it is a line about what the Legislature has chosen to occupy rather than about how much power towns have in the abstract.
Common questions
What did the SJC decide in the Marshfield case?
It affirmed dismissal of the town’s entire complaint, rejecting claims that the MBTA Communities Act is an unfunded local mandate, violates town meeting voters’ rights, violates the Home Rule Amendment, or conflicts with the Zoning Act.
Does the law require towns to build housing?
No. It requires a zoning district of reasonable size where multifamily housing is allowed as of right. Whether anything is built is up to private development.
Why did the unfunded mandate claim fail?
Because the complaint did not plausibly allege that the costs were involuntarily incurred and exceeded incidental local administration expenses, and its claim of future direct costs was a legal conclusion rather than a well-pleaded fact.
Can another town bring the same suit?
It could try with a complaint alleging specific, involuntary and more than incidental costs. The opinion’s reasoning makes that a narrow path, since costs flowing from a town’s own choices about how to comply do not count.
What happens to towns that refuse to comply?
The decision does not address the remedy for noncompliance. It holds only that Marshfield is not exempt.
Town of Marshfield v. Commonwealth, SJC-13840, argued March 4, 2026 and decided September 18, 2026, Georges, J., before Budd, C.J., Gaziano, Kafker, Wendlandt, Georges, Dewar and Wolohojian, JJ. All quotations are taken from the slip opinion, which we publish in full alongside this article. The case was heard on a motion to dismiss allowed by Superior Court Judge Mark C. Gildea, with direct appellate review granted. Robert W. Galvin argued for the plaintiffs; Assistant Attorney General H. Esme Caramello argued for the Commonwealth. General information about Massachusetts law, not legal advice.