
383 Mass. 286 (1981)
418 N.E.2d 1234
COMMONWEALTH
vs.
COUNTY OF SUFFOLK & others.[1]
Supreme Judicial Court of Massachusetts, Suffolk.
December 4, 1980.
April 2, 1981.
Present: HENNESSEY, C.J., BRAUCHER, KAPLAN, WILKINS, & ABRAMS, JJ.
Harold J. Carroll, Corporation Counsel (Howard P. Speicher, Assistant Corporation Counsel, with him) for the defendants.
Paul W. Johnson, Assistant Attorney General (Carl Valvo, Assistant Attorney General, & Michael F. Edgerton, with him) for the Commonwealth.
BRAUCHER, J.
On June 26, 1980, after a hearing, a single justice of this court issued an order granting the plaintiff's motion for a preliminary injunction, restraining the defendants from reducing the existing level of services at the Suffolk *287 County Court House (Court House) until further order of the county court.[2] The defendants appealed, and we affirm. We treat the appeal like an appeal pursuant to G.L.c. 231, § 118, second par. Cf. Mass. R.A.P. 6 (a), as amended, 378 Mass. 924 (1979), and 15 (c), 365 Mass. 859 (1974).
The Commonwealth, acting through the office of the Attorney General on behalf of the Trial Court, filed its verified complaint in the Supreme Judicial Court for Suffolk County on June 23, 1980. From the complaint and exhibits submitted to the single justice the following facts appear. The municipal defendants notified the Commission that funding for the operation of the Court House would be reduced for the fiscal year beginning July 1, 1980 (FY 1981). Therefore, in June, 1980, the Commission announced that the employment of some thirty-six temporary employees would be terminated as of June 24, 1980. Later, the termination date was postponed to June 30, 1980. The Commission determined that the budget reduction would prevent it from providing adequate security, elevator service, and custodial maintenance; and the termination of the temporary employees would substantially limit the ability of the judicial branch to perform its judicial functions in the Court House and would endanger the safety and convenience of the public. On June 19, 1980, the Superintendent of State Buildings established a rent of $1.95 per square foot to be paid by the Commonwealth to the city of Boston (city) for *288 the use of the Court House in FY 1980. The city had a right to appeal to this court under G.L.c. 29A, § 4.
The issuance or denial of a preliminary injunction requires an evaluation in combination of the moving party's claim of injury and its chance of success on the merits. If there is a substantial risk of irreparable harm to the moving party, it must be balanced against any similar risk to the other party in the light of the chance of each party to succeed on the merits. Packaging Indus. Group, Inc. v. Cheney, 380 Mass. 609, 617 (1980).
The plaintiff's principal claim on the merits is that the city retains the responsibility for maintaining the Court House under the Court Reorganization Act, St. 1978, c. 478 (Act). The defendants deny any such responsibility in the absence of a rental agreement for FY 1981 pursuant to G.L.c. 29A, § 4, inserted by St. 1978, c. 478, § 12.
Before 1978 the city clearly had the statutory responsibility to provide and maintain suitable court houses in Suffolk County. G.L.c. 34, §§ 3, 14, as amended through St. 1965, c. 513. Thompson v. Chelsea, 358 Mass. 1, 6-7 (1970). Hibbard v. County of Suffolk, 163 Mass. 34, 37 (1895). Under St. 1935, c. 474, § 6, the Commonwealth contributed 30% of the annual costs of maintenance and operation of the Court House, and the city paid the remaining 70%. The Act deleted the references to "court houses" in G.L.c. 34, §§ 3, 14. St. 1978, c. 478, §§ 17, 18. The parties are apparently in agreement that in making appropriations for FY 1980 and FY 1981 the Legislature has treated St. 1935, c. 474, § 6, as no longer effective.
In the Act the Legislature stated its intention that there be a single State budget for the entire judicial branch for FY 1980, and that the counties make all payments relative to the maintenance and operation of the judicial system until July 1, 1979, or until the Commonwealth provided for full funding, whichever came first. St. 1978, c. 478, §§ 333, 334. See Keane v. City Auditor of Boston, 380 Mass. 201, 206 (1980). "All costs of maintenance and operation of the judicial branch shall be paid by the Commonwealth." *289 G.L.c. 29A, § 1, inserted by St. 1978, c. 478, § 12, effective July 1, 1978. But the Commonwealth did not assume ownership of the court houses; instead, they are to be rented by the judicial branch from the counties, cities or towns at a rent to be "equitably established." G.L.c. 29A, § 4, inserted by St. 1978, c. 478, § 12, effective July 1, 1978. See County Comm'rs of Plymouth v. State Superintendent of Bldgs. ante 262 (1981).
In these circumstances we think the plaintiff has established a substantial likelihood of success on the merits. Under G.L.c. 29A, § 4, the city retains ownership of the Court House and is to rent it to the judicial branch. It seems implicit that the city is to continue to provide the same court facilities that were in use before the Act, looking to the "equitably established" rent for reimbursement. Costs of maintenance, repairs, and utilities paid by the city are to be taken into account in establishing the rent. The statute contemplates that negotiations may break down, and provides for establishing the rent after hearing, subject to appeal. Such a procedure may take time, and the Legislature could not have intended that court houses be closed until a final decision is reached. This conclusion is not affected by the so called "Tax-cap" legislation, St. 1979, c. 151, § 3, requiring that county budgets for FY 1980 and FY 1981 be decreased by the amounts appropriated for the costs of the county courts in FY 1979, "which costs are to be assumed by the Commonwealth." Costs which are not so assumed need not be deducted.
There is no doubt that the Trial Court would suffer harm if the services in question were not provided. The defendant's suggestion that the harm could be avoided by an injunction against the Commonwealth on the authority of O'Coin's, Inc. v. Treasurer of the County of Worcester, 362 Mass. 507 (1972), would remit the Trial Court to an untried remedy of dubious efficacy. The risk of irreparable harm to the defendants, on the other hand, rests in speculation.
Order affirmed.
NOTES
[1]  Suffolk County Court House Commission, the city of Boston, and its mayor, auditor, treasurer, budget director and personnel director.
[2]  The injunction runs against the defendants other than the Suffolk County Court House Commission (Commission), "restraining them and all others acting in concert with them from failing to provide sufficient funds to the Commission to pay for the continued services of as many of the Commission's employees as presently maintain security, operate elevators, and perform other services essential to the administration of justice in the Suffolk County Court House and against the Commission and all others acting in concert with it from terminating any employees who presently maintain security, operate elevators, or perform other services essential to the administration of justice in the Suffolk County Court House without substituting other personnel to maintain the present level of services ... until further order of this Court."
