
214 Mich. App. 501 (1995)
543 N.W.2d 351
NORTHGATE TOWERS ASSOCIATES
v.
ROYAL OAK CHARTER TOWNSHIP
Docket No. 184622.
Michigan Court of Appeals.
Submitted October 17, 1995, at Lansing.
Decided December 8, 1995, at 9:00 A.M.
Hyman and Lippitt, P.C. (by J. Leonard Hyman and Paul J. Fischer), for the plaintiff.
H. Wallace Parker, for the defendants.
Before: MacKENZIE, P.J., and FITZGERALD and J.P. O'BRIEN,[*] JJ.
PER CURIAM.
Defendants appeal as of right from a judgment that declared Royal Oak Charter Township Ordinance 91-002 unenforceable and prohibited the collection of any fees under the ordinance. We affirm.
The basic facts are not in dispute. In 1991, the *503 Royal Oak Township Board of Trustees adopted Ordinance 91-002, which requires residential rental units to be licensed on an annual basis. The ordinance provided that a license would be issued only after the interior and exterior of the residence had been inspected by the township. A resolution giving effect to the ordinance set an annual licensing fee of $25 a unit. Two additional resolutions, both passed on the same day, set an inspection fee of $25, but conflicted concerning the frequency with which landlords would be required to pay the fee. One required payment of the inspection fee biannually (twice a year) and the other required payment biennially (once every two years).
Plaintiff is the owner of certain residential rental units located within Royal Oak Charter Township. After refusing to pay the license and inspection fees, plaintiff filed this lawsuit, seeking a declaration that Ordinance 91-002 was unconstitutional and constituted an illegal tax. The trial court ruled that (1) the township failed to show that the fees charged were proportionate to the costs of licensing and inspection, (2) the conflicting resolutions rendered the ordinance unconstitutionally vague, and (3) the required inspections could not be performed without probable cause or a search warrant.
On appeal, the township contends that the trial court erred in determining that the fees charged under Ordinance 91-002 constituted an illegal tax. On the basis of our review de novo, Foreman v Oakland Co Treasurer, 57 Mich App 231; 226 NW2d 67 (1974), we agree.
Police power may be used to collect only those fees that bear a reasonable relationship to the expense involved. Merrelli v St Clair Shores, 355 Mich 575, 584, 588; 96 NW2d 144 (1959). If the *504 amount of the fee is wholly out of proportion to the expense involved, the fee will be declared a tax. Id. Police power may not be used as a subterfuge to enact and enforce what is in reality a revenue-raising ordinance. Id. Statutorily enacted fees are presumed reasonable, but may be found constitutionally infirm if they bear no reasonable relationship to the expense for which they are chargeable. Iroquois Properties v East Lansing, 160 Mich App 544, 562; 408 NW2d 495 (1987), quoting Foreman, supra. "[P]laintiffs have the burden of going forward with the evidence and the burden of proving unreasonableness." Foreman, supra, p 238.
In support of its argument that the licensing and inspection fees at issue in this case were illegal taxes, plaintiff offered the township's statement, in answer to an interrogatory, that "[e]nforcement of the ordinance will generate additional legitimate revenue which is of vital importance to the Township at a time of diminishing state aid." As plaintiff argues, this statement strongly suggests that the ordinance was viewed by the township as a revenue-generating device. However, in light of evidence produced by defendants, we cannot conclude that plaintiff overcame the presumption that the fees bore a reasonable relationship to the cost of inspection and licensing. A study and survey submitted by the township and conducted by McKenna Associates found that the fees were in general accordance with or lower than the fees charged by other communities. A report submitted by McKenna to defense counsel indicated that the "total costs encountered by the Township in administration of the Ordinance bear a reasonable relationship to the fees. In fact, the fees probably do not include all costs that could be reasonably included." Defendants also produced *505 tables demonstrating the basis for McKenna's conclusions. In light of the evidence presented by the township that the fees bore a reasonable relationship to the costs of licensing and inspection, we conclude that plaintiff failed to overcome the presumption that the fees were reasonable. The trial court erred in finding Ordinance 91-002 unenforceable on this ground.
Nevertheless, we find no error in the court's determination that the ordinance and the resolutions were unenforceable on grounds of vagueness and due process.
A statute or ordinance may be challenged for vagueness if it does not provide fair notice of the conduct proscribed. West Bloomfield Charter Twp v Karchon, 209 Mich App 43, 48; 530 NW2d 99 (1995). An ordinance must be sufficiently clear and definite to give those reading it fair notice of prohibited conduct. Allison v Southfield, 172 Mich App 592, 596; 432 NW2d 369 (1988). An ordinance is void on its face if persons of common intelligence must necessarily guess at its meaning and differ with regard to its application. Karchon, supra, p 49.
In this case, to the extent that the township's resolutions require payment of the inspection fee on both a biannual and a biennial basis, they are obviously void for vagueness; no interpretation of the resolutions can bring them into harmony. The township's explanation in the trial court was that "there was a corrective ordinance issued by the township in making that fee assessable on a biannual basis meaning every other year." This "explanation" does not resolve the conflict between the resolutions. Further, neither of the inspection fee resolutions can be harmonized by reference to the license fee resolution, since that resolution requires an annual fee.
*506 The ordinance makes the failure to comply with its provisions a misdemeanor. It is well established that no person can be held criminally responsible for conduct that cannot be reasonably understood to be proscribed. People v Ford, 417 Mich 66, 98; 331 NW2d 878 (1982). Because people of common intelligence would be forced to guess at the applicable terms of the ordinance, Karchon, supra, the trial court properly found it to be unenforceable.
We also agree with the trial court's conclusion that, as drafted, the inspection provisions of Ordinance 91-002 unconstitutionally authorize searches without warrants. See Camara v Municipal Court of San Francisco, 387 US 523; 87 S Ct 1727; 18 L Ed 2d 930 (1967). Unlike the ordinance at issue in Butcher v Detroit, 156 Mich App 165; 401 NW2d 260 (1986), the township's ordinance in this case does not require the inspector to advise an occupant that the occupant has the right to refuse entry to an inspector who does not have a search warrant. Indeed, Ordinance 91-002 offers no guidelines regarding the inspection procedure, leaving field inspectors with complete discretion in their inspections of rental units. "This is precisely the discretion to invade private property which we have consistently circumscribed by a requirement that a disinterested party warrant the need to search." Camara, supra, pp 533-534. Because the inspection requirement contains no procedure for obtaining search warrants in instances where the occupant refuses to consent to an inspection, the trial court properly concluded that the ordinance is unenforceable.
Affirmed.
NOTES
[*]  Circuit judge, sitting on the Court of Appeals by assignment.
