*307 Per Curiam.
This action was brought as a result of the adoption of an “Interim Development Regulation” by the zoning commission of the town of Southbury effective April 9, 1975. The amendment was made applicable to portions of, but not all of, the business districts in the town. By its terms, the amendment regulated those portions of the business districts to which it applied by prohibiting the granting of zoning permits for any additional use or any change of use of land or buildings, or alterations or construction of any buildings. The amendment was to expire on December 31, 1975, or upon earlier termination by the zoning commission.
The plaintiff is an aggrieved owner of property in a business district affected by the amendment. In this action, the plaintiff alleges that he is “appealing from a decision of the Zoning Commission of the Town of Southbury.” The prayer for relief is as follows: “The plaintiff claims: 1. That the action of the defendant zoning commission be declared unlawful and unconstitutional. 2. That said section 1A, Interim Development Regulation adopted by the defendant be declared null and void as to the premises of the plaintiff described in the aforesaid complaint. 3. Such other relief as may he equitable and proper.”
A question thus arises as to whether this case is an appeal from a decision of the zoning commission or an action for a declaratory judgment.
The case cannot be maintained as one for a declaratory judgment because the requirements of Practice Book § 309 (d) have not been met. That section requires that all persons having an interest in the subject matter of the complaint he made parties or have reasonable notice of the action. The
*308
requirement is a jurisdictional one, not a mere procedural regulation.
State ex rel. Kelman
v.
Schaffer,
All persons having property interests in the affected areas of the business districts in the town would have a direct interest in the subject matter of this action. National Transportation Co. v. Toquet, supra, 484.
In his brief, the plaintiff states that he “at trial restricted his appeal to the single ground that the amendment violated the provisions of Section 8-2 of the General Statutes requiring the zoning regulations to be uniform for each class of buildings or use of land throughout each district.” The plaintiff’s brief is also restricted to this single ground. That, if proven, would make the decision “illegal,” and warrant sustaining an appeal. The brief is not inconsistent with characterization of the case as an appeal.
In a similar situation, this court has held that “[t]he presence of the prayers [for an injunction and a declaratory judgment] in the application, however, did not convert the appeal into some other form of action.
Willard
v.
West Hartford,
Because the zoning regulation appealed from has expired we conclude that the appeal is moot. This
*309
court does not sit to advise on abstract principles.
Kellems
v.
Brown,
We are not convinced that this case presents a situation “capable of repetition, yet evading review.” The United States Supreme Court has
*310
applied that term primarily to cases involving political candidates,
Moore
v.
Ogilvie,
The appeal is dismissed.
Notes
The plaintiff suggests that, were this court to find the regulation invalid, it might appropriately order that any zoning restrictions affecting the plaintiff’s property which became effective subsequent to April 4, 1975, be stayed for the same amount of time that the regulation appealed from was in effect. Such relief would more than make the plaintiff whole for any injury suffered duo to the regulation; it would bestow on him a benefit denied to all other property owners in the area subject to the regulation. Such relief would not be appropriate.
