
622 N.W.2d 332 (2000)
243 Mich. App. 392
TOWNSHIP OF CASCO, Township of Columbus, and Township of Lenox, Petitioners-Appellants,
v.
Michigan STATE BOUNDARY COMMISSION, Respondent-Appellee, and
Walter Winkle, Patricia Winkle, and City of Richmond, Intervening Appellees.
Docket No. 217621.
Court of Appeals of Michigan.
Submitted September 6, 2000, at Detroit.
Decided November 28, 2000, at 9:05 a.m.
Released for Publication January 25, 2001.
*333 James V. Dubay, Richmond, for Casco Township and Columbus Township.
Terry S. Welch, Mount Clemens, for Lenox Township.
Jennifer M. Granholm, Attorney General, Thomas L. Casey, Solicitor General, and George M. Elworth, Assistant Attorney General, for State Boundary Commission.
Freeman McKenzie, (by Thomas L. Treppa ), Mount Clemens, for city of Richmond.
Kerr, Russell and Weber, PLC (by Robert J. Pineau), Detroit, for Walter K. and Patricia A. Winkle.
Bauckham, Sparks, Rolfe, Lohrstorfer & Thall, P.C., (by John H. Bauckham ), Kalamazoo, for Amicus Curiae Michigan Townships Association.
Eric D. Williams, Big Rapids, for Amicus Curiae Michigan Municipal League.
Elwood L. Brown, Corporation Counsel, and Timothy K. Morris, Assistant Corporation Counsel, Port Huron, for Amicus Curiae St. Clair County.
Before GRIBBS, P.J., and NEFF and O'CONNELL, JJ.
O'CONNELL, J.
Petitioners appeal by leave granted a circuit court order affirming a decision of the State Boundary Commission (the commission). We affirm.

I. Issues
This case presents two issues of first impression. The first is whether the commission had the jurisdiction and authority to determine the legal validity of an agreement entered into pursuant to the provisions of 1984 PA 425, M.C.L. § 124.21 et seq.; MSA 5.4087(21) et seq. (Act 425 agreement). The second is whether competent, material, and substantial evidence supported the commission's determination that the Act 425 agreements were merely a pretext to avoid annexation.

II. Facts
At the time of the proceedings below, the Winkles owned a parcel of land that was situated in both Casco Township and Columbus Township, and that was close to the city of Richmond. The parcel was also near Lenox Township, which abuts both Casco Township and Columbus Township. In July 1996, the Winkles and other landowners in Casco Township and Columbus Township filed a petition with the State Boundary Commission seeking to annex approximately 157 acres of land into the city of Richmond, pursuant to the state boundary commission act, M.C.L. § 123.1001 et seq.; MSA 5.2242(1) et seq. According to the Winkles, they wished to develop their property commercially, and Richmond had the capacity to provide water, sewer, and other services immediately and at minimal cost, while the townships would not develop such capacity for several years. However, in November 1995, Columbus Township and Lenox Township had filed an Act 425 agreement that indicated an intent to transfer a portion of Columbus Township to Lenox Township. In January 1996, Casco Township and Lenox Township filed a similar agreement to transfer a portion of Casco Township to *334 Lenox Township. These agreements covered the Winkles' land.
In November 1997, the commission concluded that the two Act 425 agreements did not meet the statutory criteria and approved the petition for annexation. The townships appealed to the circuit court, arguing that M.C.L. § 124.29; MSA 5.4087(29) absolutely barred any method of annexation or transfer of land covered in the Act 425 agreements and that the commission lacked the legal authority to determine the validity of Act 425 agreements in the first place.
Circuit Judge Daniel J. Kelly, in a written opinion, concluded that the commission had the authority to determine the validity of the Act 425 agreements and that, in this instance, the commission correctly concluded that the townships entered into the agreements solely to avoid the city's annexation and not for the sake of any development project that the enabling legislation envisioned. The court therefore concluded that the commission's decision was based on "competent, material, and substantial evidence on the whole record," and was not arbitrary, capricious, or an abuse of discretion. This Court granted the township leave to appeal.

III. Jurisdiction
The first issue for our consideration is whether the State Boundary Commission exceeded its authority or jurisdiction when it undertook to decide the legal validity of the townships' Act 425 agreements. We conclude that it did not. This Court reviews the decisions of the State Boundary Commission in accordance with the Administrative Procedures Act, M.C.L. § 24.201 et seq.; MSA 3.560(101) et seq. Midland Twp. v. State Boundary Comm., 401 Mich. 641, 671-672, 259 N.W.2d 326 (1977); Chase v. State Boundary Comm., 103 Mich.App. 193, 203, 303 N.W.2d 186 (1981); MCL 123.1018; MSA 5.2242(18). Where an administrative agency exceeds its statutory authority or jurisdiction, the reviewing court should set aside the agency's decision or order if the agency prejudiced the petitioner's substantial rights. MCL 24.306(1)(b); MSA 3.560(206)(1)(b).
The legislative purpose behind the State Boundary Commission was to establish an independent authority with "broad powers concerning annexations" and to allow annexations to take place for the general benefit of the areas concerned, instead of for the private benefit of individuals. Owosso Twp. v. Owosso, 385 Mich. 587, 590, 189 N.W.2d 421 (1971). Subsection 9(2) of the Home Rule City Act, 1909 PA 279, M.C.L. § 117.9(2); MSA 5.2088(2), provides that the commission has the power to determine "the validity of the petition or resolution" concerning annexation and also recognizes the commission's duties concerning "processing and approving, denying, or revising a petition or resolution for annexation...." M.C.L. § 123.1011a; MSA 5.2242(11a), setting forth procedures, provides, "The commission shall have jurisdiction over petitions or resolutions for annexation as provided in [MCL 117.9; MSA 5.2088]."
MCL 124.29; MSA 5.4087(29) states that where an Act 425 agreement "is in effect, another method of annexation or transfer shall not take place for any portion of an area transferred under the contract." Act 425 provides a mechanism through which "local units may conditionally transfer property" in a manner "controlled by a written contract agreed to by the affected local units." See M.C.L. § 124.22(1); MSA 5.4087(22)(1). MCL 124.30; MSA 5.4087(30) in turn provides that a duly filed Act 425 agreement "is prima facie evidence of the conditional transfer." Act 425 agreements thus allow municipalities conditionally to revise their borders without recourse to, or interference from, the commission.
At issue is the commission's role in determining whether an Act 425 agreement is valid for purposes of deciding whether the agreement bars the commission from entertaining a petition for annexation concerning the same land. The *335 plain wording of M.C.L. § 124.29; MSA 5.4087(29), provides that "a contract under this act" presently "in effect" bars other forms of "annexation or transfer" of the affected territory. This language expressly requires an Act 425 agreement that is "in effect" and, therefore, necessitates a valid agreement. Consequently, this statutory bar to the commission's consideration of an annexation petition requires an agreement that fulfills the statutory criteria, rather than a fictional agreement intended only to deprive the commission of jurisdiction.
The townships argue that either the circuit court should review the issue of jurisdiction de novo or that the circuit court should have sole jurisdiction to determine the validity of an Act 425 agreement. According to the townships, any document purporting to be an Act 425 agreement, once signed and filed according to the specified procedure, absolutely bars any action on the part of the commission concerning the same territory, without regard to the substance of the agreement. We disagree. In light of the broad grant of statutory authority to the commission over matters relating to the establishment of boundaries and annexations, we hold that the commission had the authority and jurisdiction to decide the validity of the Act 425 agreements. Logic dictates that the commission had the authority to consider the validity of two agreements that, if valid, would have barred its authority to process, approve, deny, or revise a petition or resolution for annexation. The commission would not otherwise have been able to perform its function of resolving the petition. See Shelby Charter Twp. v. State Boundary Comm., 425 Mich. 50, 73-77, 387 N.W.2d 792 (1986) (the commission may proceed with an annexation petition where it has identified only "pro forma" or "de minimus" exercises of statutory measures that would otherwise supplant its jurisdiction); Judges of the 74th Judicial Dist. v. Bay Co., 385 Mich. 710, 728-729, 190 N.W.2d 219 (1971) (an administrative agency is competent to determine its own jurisdiction). The commission's determination was thereafter subject to review in the circuit court. MCL 24.301; MSA 3.560(201), M.C.L. § 123.1018; MSA 5.2242(18); Rudolph Steiner School of Ann Arbor v. Ann Arbor Charter Twp., 237 Mich.App. 721, 731, 605 N.W.2d 18 (1999).

IV. "Shark Repellent"
The second issue for our consideration is whether the commission erred in concluding that the underlying agreement was illusory and therefore not valid. We review the commission's findings for whether competent, material, and substantial evidence existed to support the commission's findings. See Midland Twp, supra at 672, 259 N.W.2d 326; MCL 24.306(1)(d); MSA 3.560(206)(1)(d).
Act 425 agreements are statutorily authorized to allow local units to establish "an economic development project," M.C.L. § 124.22(1); MSA 5.4087(22)(1), which is statutorily defined as follows:
"Economic development project" means land and existing or planned improvements suitable for use by an industrial or commercial enterprise, or housing development, or the protection of the environment, including, but not limited to, groundwater or surface water. Economic development project includes necessary buildings, improvements, or structures suitable for and intended for or incidental to use as an industrial or commercial enterprise or housing development; and includes industrial park or industrial site improvements and port improvements or housing development incidental to an industrial or commercial enterprise; and includes the machinery, furnishings, and equipment necessary, suitable, intended for, or incidental to a commercial, industrial, or residential use in connection with the buildings or structures. [MCL 124.21(a); MSA 5.4087(21)(a).]
The circuit court, in reviewing the commission's findings, noted that an advertisement *336 soliciting petition signatures in opposition to the annexation contained the statement, "Help us in the preservation of farmland and open space." The court continued:
MCL 124.21(a); MSA 5.4087(21)(a)... requires that a valid Act 425 Agreement must provide for improvements to the property necessary for the planned industrial, commercial or housing development. The ... Commission requested information from the townships by way of questionnaires regarding the provision of water and sewer services. The Columbus Township questionnaire indicated that 1) Columbus did not provide public water service; 2) Columbus did not provide sanitary sewer service, and 3) it could provide water services by the "fall of 1997" and that "Sewers [were] under study." The Casco Township questionnaire answers stated that 1) Casco did not provide public water services or sanitary sewer services, 2) public water services could be provided by the "fall of 1997"; 3) Casco did not provide an answer regarding when sanitary sewer services could be provided. They apparently indicated that water would be available to the Act 425 Agreement land, however, they do not indicate when water could be available to the annexed property.... Thus, the information presented to the ... Commission for industrial, commercial, or industrial development may have been found to be more illusory than genuine.
The ... Commission further determined that the Act 425 Agreements were simply agreements to share services and not a true transfer of property. The ... Commission stated that "the parties did not provide evidence of such transfer, which minimally could have included a showing of a transfer to Lenox Township of property tax records and voting records of any residents in the Act 425 area."
The circuit court concluded that the townships had not entered into any real plan for economic development. The court further concluded that the purpose of the agreements was to bind nonparties in derogation of their rights, to limit the authority of the commission, and to "ward off any attempts by municipalities to annex a portion of the Townships."
While the precise reasoning behind the commission's disregard of the Act 425 agreements is not entirely clear, it apparently concluded that the townships' entered into the conditional transfers as an act of subterfuge intended to preclude the commission's jurisdiction and to avoid future annexation. The circuit court, after reviewing the administrative record, agreed with the commission and dubbed the Act 425 agreements "shark repellent."
The townships do not dispute the specific factual findings underlying the commission's conclusions. Rather, the townships argue that transfer of neither tax records nor voting records is required for a valid transfer of land under an Act 425 agreement. However, the commission did not rule that they were necessary, only that they were relevant considerations. The townships also emphasize M.C.L. § 124.30; MSA 5.4087(30), which provides that the filing of an Act 425 agreement constitutes "prima facie evidence" of the existence of the conditional transfer of land. The statute, however, does not preclude a finding that the agreement was a sham. In our view, the parties who had filed the annexation petition with the commission developed a record that supported the commission's conclusion that the agreements were essentially an attempt to avoid annexation. Further, the Act 425 agreements themselves only vaguely contemplated a plan of development at some point in the future. On the basis of the factors discussed in Judge Kelly's carefully considered opinion, we conclude that competent, material, and substantial evidence existed to support the commission's conclusion that the two Act 425 agreements were illusory in nature and that the townships *337 entered into them in order to avoid future annexation.

V. Contract Rights
The townships' final contention is that the commission's decision interfered with their contract rights in violation of U.S. Const., art. I § 10, and 1963 Const., art. 1, § 10. "Vested rights acquired under contract may not be destroyed by subsequent State legislation or even by an amendment of the State Constitution." Campbell v. Judges Retirement Bd., 378 Mich. 169, 180, 143 N.W.2d 755 (1966). This argument fails. No subsequent legislation or constitutional amendment interfered with the townships' Act 425 agreements.
Affirmed.
