CYPHER, J. We are asked to decide in this case whether the town of Falmouth (town) was required to obtain a special permit from the zoning board of appeals of Falmouth (ZBA) for the installation of a wind turbine on town land. We conclude that, under the town's zoning by-law (by-law), a special permit was required.
The plaintiffs are Falmouth residents who live between 1,300 and 3,200 feet from a wind turbine known as "Wind 1," installed in 2009 on town land at its wastewater treatment facility (WWTF). Alleging significant distress from sound pressures and noise from the operation of Wind 1, Neil Andersen and Elizabeth Andersen (collectively, the Andersen plaintiffs), on August 25, 2010, sought an enforcement action by the town's building commissioner asserting that the town was in violation of the by-law by operating Wind 1 without a special permit. The building commissioner denied their request in a letter dated September 24, 2010, and the Andersen plaintiffs appealed to the ZBA, which affirmed the building commissioner in a decision dated March 3, 2011. Separate actions for relief under G. L. c. 40A, § 17, were filed in the Superior Court by the Andersen plaintiffs and by the remaining plaintiffs. After consolidation of the cases below, and a bench trial, a judge on June 18, 2013, ordered that judgments enter affirming the decision of the ZBA.
At trial, the plaintiffs argued that the building commissioner and the ZBA incorrectly interpreted the by-law to allow the issuance of a building permit for Wind 1 without a special permit, citing § 240-166 of the by-law which provides that a petitioner may apply for a special permit to allow construction of a windmill. The judge, however, deferred to the opinion of the building commissioner, affirmed by the ZBA, that the by-law "does not apply in the limited circumstance where the Town itself desires to construct and operate a windmill for municipal purposes in a district where all such purposes are permitted as of right."
Interpretation of the town's by-law raises a question of law. Goldlust v. Board of Appeals of N. Andover, 27 Mass. App. Ct. 1183, 1184 (1989). We "review the judge's determinations of law, including interpretations of zoning bylaws, de novo." Shirley Wayside Ltd. Partnership v. Board of Appeals of Shirley, 461 Mass. 469, 475 (2012). The judge and the ZBA affirmed the building commissioner's decision without modification; therefore we examine that decision to determine whether the building commissioner's interpretation of the by-law was correct.
In reaching his decision that a special permit was not required, the building commissioner determined that Wind 1 is a "municipal purpose" that falls within the enumerated community service uses permitted as of right in § 240-30B of the by-law, which includes: "All municipal purposes, including the administration of government, parks, playgrounds, recreation buildings, Town forests, watershed, water towers and reservoirs, beaches, fire and police stations and armories." We think that this interpretation of the by-law to include Wind 1 as a permitted community service use was error.
As in other districts of the by-law, windmills are specifically designated in the public use district as an accessory use by special permit. Therefore it logically follows that windmills could not have been intended to fall within the more general municipal purpose as of right within § 240-30B of the by-law. See Miles-Matthias v. Zoning Bd. of Appeals of Seekonk, 84 Mass. App. Ct. 778, 789 (2014) (canon of construction "inclusio unius est exclusio alterius" provides that "statutory expression of one thing is an implied exclusion of other things omitted from the statute"), quoting from Harborview Residents' Comm., Inc. v. Quincy Hous. Authy., 368 Mass. 425, 432 (1975). Furthermore, § 240-18 of the by-law states that where an activity might be classified under more than one of the within uses, "the more specific classification shall govern; if equally specific, the more restrictive shall govern. Uses not classifiable under any category listed for the applicable district are prohibited, except that a use listed nowhere in Articles V through XIII may be allowed on special permit if the Board of Appeals determines that it closely resembles in its neighborhood impacts a use allowed or allowed on special permit in that district." Furthermore, § 240-17 of the by-law states: "No building or structure shall be erected, altered or extended and no premises shall be used, except as provided in Articles V through XIII, [the] district use regulations."
The judge noted in upholding the building commissioner that the list of municipal purposes in § 240-30B of the by-law was illustrative and not limiting. While that is an accurate characterization of the list, it does not adequately consider the weight that must be given a specific by-law provision that has been drafted to take into account the public welfare. The classification of windmills as a permitted municipal purpose fails to consider § 240-33G(5), which is part of a comprehensive scheme to include wind turbines in the by-law and control their placement and impact in the town. We are not to look at provisions of a by-law in isolation; we must read them contextually. Livoli v. Zoning Bd. of Appeals of Southborough, 42 Mass. App. Ct. 921, 922 (1997). Windmills were added as art. XXXIV of the by-law by an amendment authorized by a vote of the town meeting on September 10, 1981.8 The public use district, identified as art. VII, was amended to include windmills as a special permit use in § 240-33G(5) of the by-law, and the ZBA is the permit-granting authority.
Because the by-law does not contain any exemption for the town from its provisions, contrast Sinn v. Selectmen of Acton, 357 Mass 606, 608 (1970), it is apparent that the decisions of the ZBA and the Superior Court judge, which relied on an incorrect interpretations of the by-law, are not entitled to deference. See Mauri v. Zoning Bd. of Appeals of Newton, 83 Mass. App. Ct. 336, 342 (2013), and cases cited. And we conclude that those decisions are based on "a legally untenable ground, [are] unreasonable, . . . [and are] arbitrary." MacGibbon v. Board of Appeals of Duxbury, 356 Mass. 635, 639 (1970).
The plaintiffs also assert that the town failed to obey the use permit requirements in § 240-166D of the by-law. The requirements of § 240-166D, quoted in the margin,9 pertain to considerations of potential impacts on neighbors as well as safety in the operation of windmills, and it appears that many of the requirements are specific to wind turbines and are not found in local or Massachusetts building codes. The building commissioner testified that he issued a conventional use and occupancy permit and did not assert that such a permit indicated compliance with the requirements of § 240-166D. Compliance with those requirements must be made in the course of an application for a special permit.
For the reasons given, we vacate the June 18, 2013, judgments of the Superior Court. The matter is remanded to the Superior Court, where new judgments shall enter consistent with this opinion.