Opinion
This is a zoning appeal that the Appellate Court certified for review pursuant to General Statutes § 8-9. 1 The plaintiff, Thomas P. Clifford III, appeals from the judgment of the trial court dismissing his appeal from the decision of the defendant planning and zoning commission (commission) of the city of Ansonia (city) approving the site plan application of the defendant Complete Construction, Inc. (Complete). The plaintiff claims that the trial court improperly: (1) ruled that the commission had not abused its discretion in declining to hold a public hearing on Complete’s application; (2) denied his motion to introduce as additional evidence documents pertaining to the commission’s original 1998 site plan approval for the property involved; and (3) ruled that the storage of explosives on a contractor’s *437 yard was a permitted use under the city’s zoning ordinances. We agree with the plaintiffs second claim, and, therefore, we reverse the judgment of the trial court. 2
The record reveals the following relevant facts and procedural history. Complete owns property located at 1 River Street in the city (River Street property). The River Street property, which is located in a heavy industry zone, is subdivided into four lots, including one parcel designated as “lot 3,” which contains approximately forty-six acres of land. Lot 3 is a contractor’s yard, a permitted use under the zoning ordinances. The plaintiff owns residential property that abuts the River Street property and is located at 10 South Westwood Road in the city. At the regular June 25, 2001 meeting of the commission, Complete described to the commission a proposal to store dynamite on lot 3. The chairman of the commission directed Complete to submit a site plan application. On July 25, 2001, Complete filed an application for site plan approval with the commission “for the installation of two (2) bunkers for the storage of dynamite within the contractor’s storage yard located on lot 3.” On August 27,2001, during its regular meeting, the commission approved Complete’s application (2001 site plan approval). During the meeting, the members of the commission considered whether to hold a public hearing on the matter, and decided not to do so.
The plaintiff appealed from the decision of the commission to the Superior Court pursuant to General Statutes § 8-8 (b). 3 In the trial court, the plaintiff moved *438 pursuant to § 8-8 (i), 4 seeking to add the following to the return of record: (1) the minutes from the June 29, 1998 meeting of the commission approving Complete’s 1998 site plan application for the River Street property; (2) the written decision of the commission approving the 1998 site plan application; and (3) the written decision of the city’s inland wetlands commission approving the 1998 site plan application. The trial court, Cremins, J., denied the motion. Subsequently, the plaintiff moved pursuant to § 8-8 (k) (2), for permission to introduce evidence in addition to the contents of the record. 5 Specifically, the plaintiff sought to introduce into evidence the commission’s 1998 site plan approval for the River Street property and the inland wetlands commission’s 1998 site plan approval for the same property (1998 site plan approvals). Relying on the prior decision of the trial court, Cremins, J., denying the plaintiffs motion to amend the record, the trial court, Hon. George W. Ripley II, judge trial referee, denied the motion. Following a hearing on the matter, the trial court, Hon. George W. Ripley II, judge trial referee, dismissed the plaintiffs appeal. This certified appeal followed.
I
The plaintiff first claims that the commission abused its discretion in deciding not to hold a public hearing on Complete’s 2001 site plan application. We disagree.
The following additional facts are relevant to the resolution of this claim. Complete’s proposal to store *439 explosives on its River Street property was first raised in a regular meeting of the commission on June 25, 2001. The minutes of this meeting reveal that, after Complete had described its proposal, the chairman of the commission directed it to submit a formal site plan application to the commission. The minutes of the August 27, 2001 meeting reflect that a representative of Complete attended the meeting to advocate on behalf of the commission’s approval of the application. During the discussion regarding the application, the chairman of the commission stated that “this is a new proposal to [the city] and it should have a public hearing.” In response, another member of the commission noted that the determination of whether it is in the public interest to hold a public hearing lies in the discretion of the commission, and a discussion followed concerning the possible risks associated with the storage of dynamite on the site and possible safeguards that could be employed to minimize those risks. During the discussion of whether to hold a hearing, Spero Jordinandes, in his official capacity as the alderman for the fifth ward in the city, who was present at the meeting, informed the members of the commission that he and his constituents opposed the granting of the application. In response, Nunzio Párente, a member of the commission, stated that there was no need for a public hearing. Párente further noted that the “[administration,” Jordinandes, and the neighbors all were opposed to the proposed dynamite bunker, and concluded that the commission should not hold a public hearing because a hearing would “incite people instead of having them come to hear what is happening.” 6 The commission then voted *440 to approve the application without holding a public hearing.
It is axiomatic that the review of site plan applications is an administrative function of a planning and zoning commission.
Norwich
v.
Norwalk Wilbert Vault Co.,
The parties do not dispute that the city’s zoning regulations impose no requirement upon the commission
*442
to hold a public hearing under these circumstances. In fact, General Statutes § 8-3, which governs the approval of site plan applications, imposes no requirement upon a zoning commission to hold a public hearing on any site plan application. Instead, local zoning regulations determine under what circumstances a public hearing is required. See
October Twenty-Four, Inc.
v.
Planning & Zoning Commission,
In addition, the commission’s failure to hold a public hearing on Complete’s site plan application did not violate any duty imposed by the common-law requirement of fundamental fairness in administrative proceedings. See generally
Grimes
v.
Conservation Commission,
Moreover, the purposes of a public hearing were satisfied in the present case because the commission received comments from the public regarding Complete’s plan to store explosives. This court has stated that the purpose of a local zoning body in holding a public hearing is “to afford an opportunity to interested parties to make known their views and to enable the board to be guided by them.” (Internal quotation marks omitted.)
Frito-Lay, Inc.
v.
Planning & Zoning Commission,
supra,
Although a public hearing might have provided additional information relevant to the commission’s determination of whether Complete’s site plan application should have been approved; see part II of this opinion; the commission was under no duty imposed by a statute, ordinance, regulation or the common law to hold such a hearing. Moreover, the commission’s conditional approval of Complete’s site plan application addressed the main issue implicated by the application: the safety of storing explosives on the River Street lot. Accordingly, we cannot conclude, under the circumstances of the present case, that the commission abused its discretion by not holding a public hearing on Complete’s site plan application. 8
*445 II
The plaintiff next claims that the trial court improperly denied his motion to introduce evidence in addition to the contents of the record pursuant to § 8-8 (k) (2). We agree.
The following additional facts are relevant to our analysis. On June 4, 1998, the inland wetlands commission approved Complete’s application for a permit to conduct construction on the River Street property, which adjoins a wetland and watercourse. The permit was granted, however, with certain conditions. Specifically, the approval of the inland wetlands commission was limited to only the activity attested to at the time of the application, barred any further structural development on the property, and required a 100 foot buffer of undisturbed area around the wetlands and watercourse. The approval further expressly prohibited the storage of hazardous materials or demolition materials on the site and provided that the only storage facility *446 that would be allowed on the site was a 2000 gallon fuel oil storage tank. Finally, the approval required that in order for Complete to develop the site further, it would first have to seek the approval of the inland wetlands commission. Subsequently, on June 29, 1998, the commission approved Complete’s site plan application to construct and to maintain a contractor’s yard on the River Street property. In its approval of the site plan application, however, the commission expressly incorporated by reference the conditions of the permit of the inland wetlands commission. In explaining the reasons underlying its conditional approval of the site plan application, the commission noted: “In reaching its decision, the [cjommission considered the findings of the [ijnland [wjetlands [cjommission and the decision of said agency reached at its meeting of June 4, 1998.”
This information was never presented to the commission in either of the meetings during which Complete’s proposal to install the dynamite bunker on the River Street property was discussed, not in the preliminary discussion that took place on June 25, 2001, nor in the August 27, 2001 discussion on the site plan application itself. Because there was no public hearing on the matter, the plaintiff did not have the opportunity to introduce that evidence. Therefore, neither of the 1998 site plan approvals was part of the record on appeal in the trial court. The plaintiff twice attempted to present evidence of the 1998 site plan approvals to the court: first, by moving to amend the record pursuant to § 8-8 (i); and second, by moving for permission to present additional evidence pursuant to § 8-8 (k) (2). As noted previously in this opinion, the trial court, Cremins, J., denied the plaintiffs motion to amend the record pursuant to § 8-8 (i). 9 When the plaintiff subsequently moved pursuant to § 8-8 (k) (2) for permission to intro *447 duce evidence in addition to the contents of the record, the trial court, Hon. George W. Ripley II, judge trial referee, denied the motion, relying solely on the prior decision of the trial court, Cremins, J., denying the motion to amend the record. It is the denial of the plaintiffs motion to introduce additional evidence pursuant to § 8-8 (k) (2) that is at issue in this appeal.
Section 8-8 (k) provides in relevant part that, in an appeal from a decision of a zoning commission, a reviewing court “shall allow any party to introduce evidence in addition to the contents of the record if . . . (2) it appears to the court that additional testimony is necessary for the equitable disposition of the appeal. . . .” The determination of whether to allow such additional testimony lies in the sound discretion of the trial court, and is subject to review only for abuse of discretion.
Tarasovic
v.
Zoning Commission,
Similarly, in the present case, the plaintiff sought to introduce on appeal evidence that had not been presented to the commission, namely, the 1998 site plan approvals. The question is whether this evidence was necessary for the equitable disposition of the appeal. For two reasons, we conclude that it was, and, therefore, that the trial court abused its discretion in denying the plaintiffs motion to introduce additional testimony pursuant to § 8-8 (k) (2).
First, the evidence that the plaintiff sought to introduce consisted of information that, viewed on its face, could well have affected the commission’s consideration of Complete’s site plan application if it had been brought to the commission’s attention, because the 1998 site plan approvals revealed conditions that the commission itself previously had imposed upon Complete before Complete would be granted permission to develop the site further. Evidence of specific limitations that the commission itself had placed on Complete’s further development on the site is precisely the type of information that the commission should have had before it in determining whether to grant the site plan application. 10 Therefore, it was information that was necessary for the equitable disposition of the question before the trial court, namely, whether the commission properly granted Complete’s application. Second, because there was no public hearing, the plaintiff did not have the opportunity to present the 1998 site plan approvals for the commission’s consideration. The plaintiffs motion pursuant to § 8-8 (k) (2) was his first *449 reasonable opportunity to bring to the court’s attention the limitations on the use of Complete’s property that may well have affected the approval of the site plan application. To penalize the plaintiff for the absence in the record of documents that could have affected the commission’s decision on the site plan application, when the plaintiff had no reasonable opportunity to bring such documents to the attention of the commission, would be simply unfair and not in accordance with basic principles of equity.
This conclusion, namely, that the trial court abused its discretion in denying the plaintiffs motion pursuant to § 8-8 (k) (2), requires a new hearing on the plaintiffs appeal in the trial court. The plaintiff is entitled to present to the trial court his contentions, based on the newly presented evidence, why the commission should not have granted Complete’s application. The commission and Complete are also entitled, however, to present their contentions regarding why that evidence does not undermine the validity of the grant of the application. The court will then be in a position to make an equitable disposition of the appeal.
Ill
The plaintiffs final claim is that the trial court improperly concluded that the storage of explosives on the River Street property was a permitted use under the city’s ordinances. We agree with the plaintiff that such a use is not expressly permitted under the city ordinances, and that, therefore, the trial court improperly concluded on that basis that it was a permitted use. 11 *450 The commission and Complete argue, however, as an *451 alternate ground of affirmance on this issue, that the storage of explosives is an accessory use to the principal use of a contractor’s yard. We conclude that the record before the commission was sufficient to support the conclusion that the proposed use was a permitted accessory use to the property.
The question that the commission had to determine in deciding whether to approve Complete’s site plan application is whether the storage of explosives is an accessory use of a contractor’s yard. “[W]hether a particular use qualifies as an accessory use is ordinarily a question of fact for the zoning authority, to be determined by it with a liberal discretion.” (Internal quotation marks omitted.)
Graff
v.
Zoning Board of Appeals,
In determining whether a zoning commission’s actions were reasonable, we examine whether there was substantial evidence in the record to support the commission’s determination. Id., 670-71. “The substantial evidence rule is similar to the sufficiency of the evidence standard applied in judicial review of jury verdicts, and evidence is sufficient to sustain an agency finding if it affords a substantial basis of fact from which the fact in issue can be reasonably inferred. It must be enough to justify, if the trial were to a jury, a refusal to direct a verdict when the conclusion sought to be drawn from it is one of fact for the jury.” (Internal quotation marks omitted.)
Gevers
v.
Planning & Zoning Commission,
When a zoning commission has not stated on the record the basis of its determination, the reviewing court must search the record to determine the basis for the commission’s decision.
Graff v. Zoning Board of Appeals,
supra,
With this very deferential standard of review in mind, we now turn to the question of whether the commission’s decision approving Complete’s site plan application was supported by substantial evidence in the record that the storage of explosives was an accessory use to a contractor’s yard. Section 110.3 of the Ansonia Zoning Ordinances defines accessory use as “[a] use which is customarily incidental and subordinate to the principal use of a lot or a building and located on the same lot therewith.” We recently reiterated our interpretations of the terms “ ‘customarily incidental’ ” and “ ‘subordinate’ ” as part of the definition of “ ‘accessory use’ ” in
Graff
v.
Zoning Board of Appeals,
supra,
We also explained the meaning of the word “customarily,” stating that “[although it is used in this and many other ordinances as a modifier of incidental, it should
*454
be applied as a separate and distinct test. . . . Moreover, in
Lawrence,
we noted that [i]n examining the use in question, it is not enough to determine that it is incidental in the two meanings of that word as discussed [previously]. The use must be further scrutinized to determine whether it has commonly, habitually and by long practice been established as reasonably associated with the primary use. ... As for the actual incidence of similar uses on other properties . . . the use should be more than unique or rare, although it need not necessarily be found on a majority of similarly situated properties to be considered customary.” (Citation omitted; internal quotation marks omitted.) Id., 658-59. We noted in
Lawrence,
that the determination of whether a use is subordinate and customarily incidental to the principal use of the property is one that is “peculiarly within the knowledge of the local board.”
Lawrence
v.
Zoning Board of Appeals,
supra,
The commission had information before it, during its regular meeting held on June 25, 2001, that the storage of explosives is an accessory use to the principal use of a contractor’s yard. Specifically, Peter Crabtree, the city’s zoning enforcement officer, so stated during the meeting. At the time of the June meeting, Complete had not yet filed a site plan application for the construction of a storage bunker on the property. The minutes of the meeting indicate that Complete appeared before the commission to present its proposal for the construction of the storage bunker on its property. During the meeting, the commission members questioned Complete’s representative regarding where on the property the bunker would be placed, the proposed size and *455 capacity of the bunker and of the detonator and other concerns. During the ensuing discussion, some members expressed concern regarding the proximity of the property to densely populated residential zones, and questioned whether, under those circumstances, a public hearing would be required once Complete filed a site plan application. One member of the committee even questioned whether the use was one that was permitted. Crabtree responded that it was, and stated that it was a “minor accessoiy use.” He also stated that the storage of dynamite was “an accessory use to the business . . . .” Crabtree’s statements were the only evidence before the commission that the storage of explosives constituted an accessoiy use of a contractor’s yard.
Given the deferential standard of review of a zoning commission’s actions, taken together with the fact that the commission was relying on the representation of its zoning enforcement officer, we cannot conclude that the commission abused its discretion in determining that the proposed use was one that is accessory to the principal use of the property as a contractor’s yard. It would be inconsistent with that deferential standard of review if we were to require the commission to second-guess the judgment of the very person charged with the enforcement of the city’s zoning regulations. We conclude, therefore, that Crabtree’s testimony constituted substantial evidence in support of the commission’s determination that Complete’s proposed use of the property was a permitted accessory use. 12
*456 The judgment is reversed and the case is remanded with direction to grant the plaintiffs motion to submit additional evidence, and for a new trial on the plaintiffs appeal.
In this opinion the other justices concurred.
Notes
General Statutes § 8-9 provides: “Appeals from zoning commissions and planning and zoning commissions may be taken to the Superior Court and, upon certification for review, to the Appellate Court in the manner provided in section 8-8."
Following the Appellate Court’s grant of certification, we transferred the appeal to this court pursuant to General Statutes § 51-199 (c) and Practice Book § 65-1.
Because they are likely to arise on the remand, we also address the first and third claims raised by the plaintiff.
General Statutes § 8-8 (b) provides in relevant part: “[A]ny person aggrieved by any decision of a board, including a decision to approve or deny a site plan pursuant to subsection (g) of section 8-3, may take an appeal to 1he superior court for the judicial district in which the municipality is located. ...”
General Statutes § 8-8 (i) sets forth the procedures by which a zoning board shall transmit the record to the trial court and provides in relevant part: “The court may require or permit subsequent corrections or additions to the record.”
General Statutes § 8-8 (k) provides in relevant part: “The court shall review the proceedings of the board and shall allow any party to introduce evidence in addition to the contents of the record if ... (2) it appears to the court that additional testimony is necessary for the equitable disposition of the appeal. . .
We disagree with the plaintiffs contention that Parente’s statement should be attributed to the commission as its reason for its decision not to hold a public hearing. We have stated that, “[w]hen a zoning agency has stated its reasons for its actions, a court should not reach beyond those stated purposes to search the record for other reasons supporting the commission’s decision. . . . Rather, the court should determine only whether the assigned grounds are reasonably supported by the record and whether they are pertinent to the considerations which the authority was required to apply
*440
under the zoning regulations. . . . The principle that a court should confine its review to the reasons given by a zoning agency . . . applies [only] where the agency has rendered a formal, official, collective statement of reasons for its action. ... It does not apply to mere utterances of individual members of the agency.” (Citations omitted; internal quotation marks omitted.)
Harris
v.
Zoning Commission,
We note that our statutes specifically provide a planning commission with the authority to decide whether to hold apublic hearing on a subdivision application. See General Statutes § 8-26 (“commission may hold a public hearing regarding any subdivision proposal if, in its judgment, the specific circumstances require such action”). By contrast, § 8-3 (g) does not provide a zoning commission with similar discretionary authority to hold a public hearing on a site plan application.
This conclusion is consistent with the decisions of courts of both this and other jurisdictions that have considered whether an administrative agency abused its discretion by failing to hold a public hearing. Generally, courts have concluded that administrative agencies have not abused their discretion by failing to hold a public hearing if they were not obligated to do so pursuant to a statute or an ordinance. Conversely, agencies have been determined to have abused their discretion only when they have failed to hold a mandated public hearing in violation of a statute or ordinance. Compare
Burke
v.
Board of Representatives,
The plaintiff does not challenge this ruling in this appeal.
The record offers no explanation as to why the commission had no record of its own prior proceeding in the 1998 site plan approvals.
We first note that the city’s zoning ordinances are permissive in nature. As we have recently explained, the significance of such a structure is that “those matters not specifically permitted are prohibited.”
Graff
v.
Zoning Board of Appeals,
Section 310 of the Ansonia Zoning Ordinances, entitled, “Schedule of Permitted Uses,” provides in relevant pari, that “[l]and, buildings and other structures in any district shall be used for one or more of the uses specified *450 in Schedule B as permitted in the district. . . .” Section 310.2 of the Ansonia Zoning Ordinances, entitled, “Prohibited Uses,” further provides in relevant part that “[a]ny use not specified in Schedule B as permitted is prohibited. To further assist in the interpretation of Schedule B, the following uses, the listing of which is not intended to be exhaustive, are specifically prohibited . . . .” Section 310 does not list the storage of explosives as a prohibited use. Because the list in that section is not intended to be exhaustive, however, we examine Schedule B to determine whether the storage of explosives is apermitted use. One of the uses listed on Schedule B is “[b]uilding contractors and sub-contractors yards.” Although Schedule B does not specify that the uses listed as permitted are principal uses of property, and although the city’s zoning ordinances do not contain a definition of principal uses, we note that the uses listed in Schedule B are uses that fit the traditional definition of principal uses as the main, primary or dominant use of the land. See R. Fuller, 9 Connecticut Practice Series: Land Use Law and Practice (2d Ed. 1999) § 4.19, pp. 79-80. For example, the permitted uses listed include: ambulance services, auto body painting and repair, barbering and hairdressing, bottling plants for water and nonalcoholic beverages, cold storage facilities, and commercial picnic grounds, to name a few. Storage of explosives is not listed as a principal permitted use.
We further note that we find unpersuasive the defendants’ argument that, under the zoning ordinances, the storage of explosives is a permitted principal use. The defendants rely on several provisions in the city’s zoning ordinances to argue that it may be inferred that the storage of explosives is a permitted use. First, they point to § 310.2, which specifies expressly prohibited uses. We already have noted, however, that the list of prohibited uses is not intended to be exhaustive. Furthermore, § 310.2 of the Ansonia Zoning Ordinances specifically provides that the list of expressly prohibited uses is intended merely to assist in the interpretation of the schedule of permitted uses and that “[a]ny use not specified in Schedule B as permitted is prohibited. ...” The defendants also rely on § 330.12.2, which implicitly permits outside storage in connection with a heavy industrial use. Section 330.12.2 of the Ansonia Zoning Ordinances, which limits the use of outside storage in heavy industrial districts, provides: “In industrial districts, outside storage areas shall not extend into the area required for setback from a property line, street line or residence district boundary line, and shall be enclosed (except for necessary access drives) by buildings and/or by fences, walls, embankments or evergreen shrubs or trees so as to screen the storage area from view from any other lot or from any street.”
Presumably, however, outside storage that already has been deemed to be an accessory use is the only type of storage that would be permitted under this provision. The argument, therefore, begs the question. Finally, the defendants rely on § 355.6 of the Ansonia Zoning Ordinances, which provides: “No material which is dangerous due to explosion, extreme fire hazard or radioactivity shall be used, stored, manufactured, processed, *451 assembled, or disposed of except in accordance with applicable codes and regulations of the City, the State of Connecticut and the Federal government.” (Emphasis added.) This provision prohibits the storage of material that is “dangerous due to explosion” unless it is stored in accordance with otherwise applicable city, state and federal regulations. Put another way, this provision indicates that, if such material is to be stored, it be done so pursuant to such codes and regulations. That falls short of a statement that such storage is a permitted principal use under the city’s zoning ordinances.
We recognize that, even under this very deferential standard of review, there may be circumstances under which conclusory statements made by a single individual before a zoning commission may not constitute substantial evidence to support a commission’s determination. We emphasize that our conclusion in the present case that Crabtree’s conclusory assertions, alone, constituted substantial evidence to support the commission’s determination, is grounded on the fact that Crabtree, as the zoning enforcement officer of the city, was charged with the responsibility and the authority to enforce the zoning provisions of the city. Therefore, we conclude that the commission properly accorded great weight to his statements.
