
7 Mich. App. 659 (1967)
153 N.W.2d 162
PURITAN-GREENFIELD IMPROVEMENT ASSOCIATION
v.
LEO.
Docket No. 841.
Michigan Court of Appeals.
Decided October 16, 1967.
*663 Armstrong, Helm, Marshall & Schumann (Neill T. Peters, of counsel), for plaintiff.
Joseph M. Weiss, for defendant Leo.
LEVIN, J.
Defendant-appellant John L. Leo claims the circuit judge erred in setting aside a use variance granted by the Detroit board of zoning appeals.
Leo owns a one-story, one-family dwelling[1] at the northwest corner of Puritan avenue and Prest avenue, located in the northwest section of Detroit in an R-1 (single-family residence) zoning district. On application and after hearing, the board granted Leo[2] a variance to permit the use of the property as a dental and medical clinic (an RM-4 use) and to use the side yard for off-street parking on certain conditions.
The order of the board states that immediately to the west of the westerly boundary of Leo's property is a gasoline service station (at the corner of Puritan and Greenfield); that there was testimony Leo had not received any offers from residence-use buyers during the period of over a year the property had been listed and offered for sale; and, in the event a variance was granted, it was intended to preserve the present exterior of the building without significant *664 alteration so that it would continue to appear to be a one-family dwelling.
The appeal board's dominant finding was:
"That the board found unnecessary hardship and[3] practical difficulty because of the heavy traffic[4] and the closeness to the business section immediately to the west."
The board also found that the proposed use would not alter the essential character of the neighborhood, would not be injurious to the contiguous property, would not be detrimental to the surrounding neighborhood, and would not depreciate property values.
Plaintiff-appellee, Puritan-Greenfield Improvement Association, filed a complaint with the circuit court which was treated by the court as one for superintending control.[5] The matter was heard by the circuit judge on the record made before the board. The circuit judge reversed the decision of the board, stating inter alia that it had not been shown the land could not yield a reasonable return or be put to a proper economic use if used only for a purpose allowed by existing zoning and that such showing of hardship as had been made was of "self-created" hardship attributable to the character of the structure thereon.
The applicable enabling act provides for a board of zoning appeals authorized to grant a variance upon a showing of practical difficulties or unnecessary hardship.[6] The Detroit ordinance requires *665 evidence of special conditions[7] and unnecessary hardship or practical difficulties.[8]
The enabling act specifies neither a particular procedure for obtaining review of board of zoning appeals' action nor the scope of review. Review is obtained by means of an application for superintending control (see footnote 5) which replaces certiorari. The minimum constitutional standard establishes the scope of review. The circuit judge and we are required by the Michigan Constitution to determine whether the findings of the board and its order are authorized by law and whether they are supported by competent, material, and substantial evidence on the whole record. Const 1963, art 6, § 28.
Although there has been a great deal of judicial effort expended in Michigan in considering challenges to the reasonableness or constitutionality of zoning as applied to individual properties, we find no Michigan appellate decisions construing the *666 words "unnecessary hardship or practical difficulties."[9]
The first modern zoning regulations were adopted by the city of New York and the phrase "practical difficulties or unnecessary hardship" was fashioned as the applicable standard to guide New York's board of appeals in considering applications for variances.[10] A comparison of the relevant language of the applicable Michigan enabling act with that of the original New York city legislation shows that the Michigan provision authorizing the vesting in a board of zoning appeals the authority to grant variances parallels the corresponding New York City provision.
It appears that most State enabling acts, and ordinances based thereon, use "unnecessary hardship" as the governing standard.[11] In those States (like Michigan and New York) where the applicable standard *667 is "unnecessary hardship or practical difficulties," the phrase "practical difficulties" has been regarded as applicable only when an area or a dimension variance is sought, and in determining whether a use variance will be granted the decisive words are "unnecessary hardship."[12] In the light of this history, we have turned for guidance to decisions of other States applying the "unnecessary hardship" standard.
A text writer, Rathkopf, states that courts have held, variously, that a property owner seeking a variance on the ground of "unnecessary hardship" must show credible proof that the property will not yield a reasonable return if used only for a purpose allowed by the ordinance or must establish that the zoning gives rise to hardship amounting to virtual confiscation or the disadvantage must be so great as to deprive the owner of all reasonable use of the property. He concedes that the showing required "is substantially equivalent to that which would warrant a court in declaring the ordinance confiscatory, unreasonable, and unconstitutional in its application to the property involved." 2 Rathkopf, The Law of Zoning and Planning, p 45-14.
*668 These principles also find expression in the frequently stated generalizations that variances should be sparingly granted,[13] that it is not sufficient to show that the property would be worth more or could be more profitably employed if the restrictions were varied to permit another use,[14] and that the board of appeals, being without legislative power, may not in the guise of a variance amend the zoning ordinance or disregard its provisions.[15]
The judicial attitudes so expressed could well have been influenced by the early history of the boards of zoning appeal and the need to declare more precise standards than the somewhat nebulous "unnecessary hardship."[16] When zoning was in its infancy it was thought by some that without a board of zoning appeals the individual declarations of zoning ordinance invalidity would be so numerous it would become necessary to declare the legislation void as a whole and, thus, "the chief value of the board of appeals in zoning is in protecting the ordinance from attacks upon its constitutionality."[17] That view of the purpose of the board of zoning appeals has been said to require a standard related to the reasonableness of the zoning:
*669 "The hardship contemplated in this legislation has constitutional overtones, and it is the purpose of the variance to immunize zoning legislation against attack on the ground that it may in some instances operate to effect a taking of property without just compensation." R-N-R. Associates v. Zoning Board of Review of the City of Providence (1965), 100 RI 7 (210 A2d 653, 654).[18]
It has been said that the function of a board of zoning appeals is to protect the community against usable land remaining idle and it is that purpose which gives definition to "unnecessary hardship."
"Since the main purpose of allowing variances is to prevent land from being rendered useless, `unnecessary hardship' can best be defined as a situation where in the absence of a variance no feasible use can be made of the land." 74 Harv Law Rev, p 1401; quoted in State v. Milwaukee Board of Appeals (1965), 27 Wis 2d 154 (133 NW2d 795, 799).
Whatever the rationale may be, it has been held that a variance should not be granted until it appears the property cannot be put reasonably to a conforming use (Brackett v. Board of Appeal of Building Department of City of Boston [1942], 311 Mass 52 [39 NE2d 956, 961]; Stolz v. Ellenstein [1951], 7 NJ 291 [81 A2d 476, 478]); or the application of the ordinance is so unreasonable as to constitute an arbitrary and capricious interference with the basic *670 right of private property (Stolz v. Ellenstein, supra); or that the property cannot be used for a conforming purpose (Brown v. Beuc, supra, at p 852; similarly C. & C., Incorporated, v. Semple [1966], 207 Va 438 [150 SE2d 536, 539]; Searles v. Darling [1951], 46 Del 263 [83 A2d 96, 100]).
"An unnecessary hardship exists when all the relevant factors taken together convince that the plight of the location concerned is unique in that it cannot be put to a conforming use because of the limitations imposed upon the property by reason of its classification in a specific zone." Peterson v. Vasak, supra, at p 426.
The authors of a number of scholarly studies appear to agree that an applicant desiring a variance must show
"(a) that if he complies with the provisions of the ordinance, he can secure no reasonable return from, or make no reasonable use of, his property; (b) that the hardship results from the application of the ordinance to his property; (c) that the hardship of which he complains is suffered by his property directly, and not merely by others; (d) that the hardship is not the result of his own actions; and (e) that the hardship is peculiar to the property of the applicant." Green, The Power of the Zoning Board of Adjustment to Grant Variances from the Zoning Ordinance (1951), 29 NC Law Rev 245, 249.[19]
*671 The New York Court of Appeals has stated:
"Before the board may exercise its discretion and grant a [use] variance upon the ground of unnecessary hardship, the record must show that (1) the land in question cannot yield a reasonable return if used only for a purpose allowed in that zone; (2) that the plight of the owner is due to unique circumstances and not to the general conditions in the neighborhood which may reflect the unreasonableness of the zoning ordinance itself; and (3) that the use to be authorized by the variance will not alter the essential character of the locality." Otto v. Steinhilber (1939), 282 NY 71 (24 NE2d 851).
The Otto definition has been adopted by other courts. Deardorf v. Fort Dodge Board of Adjustment of Planning and Zoning Commission (1962), 254 Iowa 380 (118 NW2d 78, 81) (the Iowa court referred to the foregoing New York court of appeals statement as "perhaps the most precise definition we have found"). See, also, Sutton v. Board of Adjustment of City of Wilmington (Del, 1962), 200 A2d 835, 838.
We find overwhelming support for the proposition  expressed in Otto  that the hardship must be unique or peculiar to the property for which the variance is sought.
"Difficulties or hardships shared with others go to the reasonableness of the ordinance generally and will not support a variance as to one parcel upon the ground of hardship." 2 Rathkopf, op. cit., p 45-3.[20]
*672 Under these definitions even if the land cannot yield a reasonable return if used only for a purpose permitted by existing zoning, a use variance may not be granted unless the landowner's plight is due to unique circumstances and not to general conditions in the neighborhood that may reflect the unreasonableness of the zoning.
This limitation on the board's powers is related to the third limitation expressed in Otto  that a use authorized by a variance shall not alter the essential character of the locality. In this connection we note that the Detroit ordinance prohibits a variance that would be contrary to the public interest or inconsistent with the spirit of the ordinance. (See footnote 8.)
"If it [the hardship] affects a whole area, then his remedy lies in seeking an amendment to the zoning ordinance. This is true even where the applicant's property is situated in an area where none of the properties can be put to any reasonable beneficial use owing to zoning restrictions. It is not for the board in these circumstances to bestow liberties upon one single member of this group of property holders. The legislature must be the body to make decisions of this sort even in cases where the most severe hardship can be shown." Pooley, Planning and Zoning in the United States, op. cit., at p 59.
The Rhode Island supreme court has stated that once the right to a variance becomes established the only matter remaining is the scope and character of the relief to be granted, which must be effectuated in a manner consistent with the public interest (R-N-R. Associates v. Zoning Board of Review of the City of Providence, supra, at p 655); but if a considerable number of property owners are similarly affected, it might well appear contrary to the spirit of the ordinance to grant relief to one while denying it to another, and in such a case it has been *673 said that relief should be withheld until it can be decreed by the governing body or, if necessary, by the courts.[21]
While we have discussed the foregoing statements that the hardship must be unique and that there are limitations on a zoning appeal board's power to frame a remedy when the hardship is shared with others  such statements being so inextricably a part of judicial, text, and scholarly definitions of "unnecessary hardship" that the construction of that term could not accurately be discussed without reference to those statements  we do not here express our views thereon, as it is not necessary to do so in order to decide this case. We limit our holding to that expressed in the next paragraph.
Our review of the authorities leads us to hold that a use variance should not be granted unless the board of zoning appeals can find on the basis of substantial evidence that the property cannot reasonably be used in a manner consistent with existing zoning. In Otto the New York court of appeals stated that one seeking a variance must show that the land in question cannot yield a reasonable return if used only for a purpose allowed in the relevant zoning district. It will be noted that we have used the word "property" (i.e., including improvements) rather than "land", reserving to a later day the decision whether we wish to adopt that aspect of the Otto definition.[22] It will also be noted that our holding speaks in terms of "reasonable use" rather than "reasonable return".[23] Whether property usable *674 in trade or business or held for the production of income can reasonably be used for a purpose consistent with existing zoning will, no doubt, ordinarily turn on whether a reasonable return can be derived from the property as then zoned. While any property, including a single-family residence, may be made to produce income if a tenant can be found therefor, it would in our opinion be unrealistic as to all properties (without regard to their varying utility) to resolve the question solely on the basis of the return that can be derived from the property.
In the case of Leo's property, we perceive the question to be whether the property can continue reasonably to be used as a single-family residence. The appeal board made no determination in that regard, resting its finding of unnecessary hardship solely on the "heavy traffic and the closeness to the business section immediately to the west."
Leo's property has been used for some time as a single-family residence. While the board found there was "testimony" that Leo had not received any offers from residence-use buyers during the period of over a year the property had been listed and offered for sale, the asking price for the house and adjoining lot was $38,500 in a neighborhood where, according to the only record evidence, houses generally sell for $20,000 to $25,000. There was no evidence of efforts to sell the property at any price lower than $38,500; indeed, there was no testimony at all as to the extent of the sales effort or the income that could be derived from the property as zoned. See Crossroads Recreation, Inc., v. Broz (1958), 4 NY2d 39, 44 (172 NYS2d 129, 132); Forrest v. Evershed (1959), 7 NY2d 256 (196 NYS2d 958); compare Jones v. DeVries, 326 Mich 126, 137, et seq., applying the Grand Rapids ordinance.[24]
*675 Testimony that the house and lot could not be sold for $38,500 in a neighborhood where houses generally sell for substantially less than that amount does not, in our opinion, constitute any evidence that the property could not continue reasonably to be used as a single-family residence. Compare Hammond v. Bloomfield Hills Building Inspector (1951), 331 Mich 551, 557.
Thus, there was not only a failure to find that the property could not reasonably be used in a manner consistent with existing zoning, but, as we read the record, there was no evidence upon which such a finding could have been based. In this connection, it should be remembered that the fact that the property would be worth more[25] if it could be used as a doctor's clinic and that the corner of Puritan and Prest has disadvantages as a place of residence does not authorize the granting of a variance. Heavy traffic is all too typical of innumerable admittedly residential streets. Adjacency to gasoline stations or other commercial development is characteristic of the end of a business or commercial district and the commencement of a residential district. "A district has to end somewhere." Real Properties, Inc., v. Board of Appeal of Boston (1946), 319 Mass 180 (65 NE2d 199, 201).[26]
It can readily be seen that unless the power of the board of zoning appeals to grant a use variance is defined by objective standards, the appeal board *676 could (and we do not in any sense mean to suggest this would be deliberate) rezone an entire neighborhood  a lot or two lots at a time. The variance granted in response to one "hardship" may well beget or validate another claim of hardship and justify still another variance.[27] If it is a hardship to be next to a gasoline station, it could be a hardship to be across from one, to be behind one, or diagonally across from one. If heavy traffic is a valid basis, variances might become the rule rather than the sparingly granted exception.
We do not wish to be understood as challenging the judgment of the board of zoning appeals. A doctor's office with the appearance of a single-family residence on a busy street which already has other commercial uses may very well be a logical, sensible, and unobjectionable use. However the question before us is not whether the board of zoning appeals has acted reasonably, but whether on the proofs and findings the board could grant a variance on the ground of unnecessary hardship. We have concluded that neither the proofs nor the findings justified the variance granted.
We have given careful consideration to the considerable number of cases we found where the result was based on the reviewing court's conclusion that the appeal board had not abused the discretion confided to it. If there is substantial evidence to support the necessary findings, such a decision is, indeed, the correct one. However, there must be such evidence and such findings.[28]
*677 We have considered and rejected appellee's contention that a board of zoning appeals may not grant a use variance.[29] We have also considered appellee's contention that the board's action should be reversed because the hardship alleged by Leo was "self-created." However, the hardship found by the board in this case could not be said to have been self-created  Leo neither created the traffic conditions on Puritan nor the gasoline station immediately to the west of his property.[30]
Affirmed. Costs to appellee.
LESINSKI, C.J., and BURNS, J., concurred.
NOTES
[1]  The structure is 50 feet by 58 feet on a parcel of land 120 feet wide by 100 feet deep.
[2]  Defendants Henry Small, a medical doctor, and Abe S. Pearlman, a dentist (proposed purchasers of the property), did not appear in the circuit court proceedings. Defendants board of zoning appeals, its members, and the department of buildings and safety engineering and its commissioner appeared in the circuit court. Leo is the only defendant appealing here. None of the other defendants filed briefs on this appeal.
[3]  Both the enabling act (PA 1921, No 207, as amended [CLS 1961, § 125.585(d), Stat Ann 1958 Rev § 5.2935(d)]) and the zoning ordinance of the city of Detroit, Ordinance No 171-D, § 20.7, 4th paragraph, use the disjunctive "or"  not the conjunctive "and".
[4]  The board earlier found "that Puritan avenue is a highly traversed east-and-west street."
[5]  GCR 1963, 711; revised judicature act, PA 1961, No 236, § 615 (CLS 1961, § 600.615, Stat Ann 1962 Rev § 27A.615).
[6]  PA 1921 No 207 (CLS 1961, § 125.585, Stat Ann 1958 Rev § 5.2935). See Dawley v. Ingham Circuit Judge (1928), 242 Mich 247, holding that a home-rule city may avail itself of this enabling legislation.
[7]  The Detroit ordinance (Ordinance No 171-D) was not adopted until 1940. The term "special conditions" appears in the standard State zoning enabling act (see footnote 11).

In Ackerman v. Board of Commissioners of Town of Belleville (1948), 1 NJ Super 69 (62 A2d 476, 479), the court stated that the term "special conditions" refers to "circumstances uniquely touching his [the applicant's] land as distinguished from conditions that affect the whole neighborhood." As will appear, without regard to whether the term "special conditions" is used, courts generally have ruled that a variance in the use of land may only be granted under the circumstances so described in Ackerman. We find it unnecessary to consider in this case whether the term "special conditions" modifies the meaning of "practical difficulties or unnecessary hardship" or whether the city of Detroit may change the governing standard set forth in the applicable enabling act.
[8]  Counsel for the parties are in agreement that the only provision of the Detroit ordinance here applicable is the following:

"Where owing to special conditions a literal enforcement of the provisions of this ordinance will result in unnecessary hardship or involve practical difficulties, the board shall have power upon appeal in specific cases to authorize such variance or modification of the terms of this ordinance as will not be contrary to the public interest and so that the spirit of this ordinance shall be observed, public safety secured and substantial justice done." Ordinance No 171-D, § 20.7, of the city of Detroit.
[9]  We agree with the appellant (Leo) that we would not be justified in concluding without independent analysis that the Supreme Court's quotation of the New York standards in Tireman-Joy-Chicago Improvement Association v. Chernick (1960), 361 Mich 211, means that such standards were then adopted for Michigan. This is also the view of one author (Crawford, Michigan Zoning and Planning, § 6.06, pp 6-14). We have, therefore, regarded this as a case of first impression in Michigan.
[10]  For a history and the text of the New York City legislation, see Bassett, Zoning (1940), p 133 et seq.
[11]  A standard State zoning enabling act (recommended in the early 1920's by the United States Department of Commerce) authorizing variances, "where, owing to special conditions, a literal enforcement of the provisions of the ordinance will result in unnecessary hardship", has been adopted literally or in major parts by most States. City of San Angelo v. Boehme Bakery (1945), 144 Tex 281 (190 SW2d 67, 69). The Standard State Zoning Enabling Act, as revised to 1926, is reprinted in 3 Rathkopf, The Law of Zoning and Planning, at pp 100, 101.

A survey of zoning laws and ordinances adopted during 1928 and 1929, prepared by Norman L. Knauss of the Division of Building and Housing of the Bureau of Standards of the United States Department of Commerce in 1930 states (at page 2) that 35 states had "used" the standard act in 54 zoning laws. See, also, Anderson, Planning, Zoning and Subdivision: a Summary of Statutory Law in the 50 States, New York State Federation of Official Planning Organizations (1966), and Cunningham, Land-Use Control  The State and Local Programs (1965), 50 Iowa Law Rev pp 367, 368,
[12]  The term "practical difficulties" has not been as widely used as the term "unnecessary hardship", perhaps because the term "practical difficulties" was not used in the standard act. See Anderson, Planning, Zoning and Subdivision, op. cit., footnote 15.

"Practical difficulties * * * play little part in so-called `use', or exception from zoning limitation, variances," Bellamy v. Board of Appeals of City of Rochester (1962), 32 Misc 2d 520 (223 NYS2d 1017, 1020).
See, also, Indian Village Manor Company v. City of Detroit (1967), 5 Mich App 679, relying on Village of Bronxville v. Francis, 1 App Div 2d 236 (150 NYS2d 906), modifying 206 Misc 339 (134 NYS2d 59), and affirmed 1 NY2d 839 (153 NYS2d 220); Hoffman v. Harris (1966), 17 NY2d 138 (216 NE2d 326, 330); Alumni Control Board, Alpha Psi Chapter, Delta Sigma Phi Fraternity, Inc., v. City of Lincoln (1965), 179 Neb 194 (137 NW2d 800, 802); Loyola Federal Savings & Loan Association v. Buschman (1961), 227 Md 243 (176 A2d 355, 358); Brown v. Beuc (Mo App, 1964), 384 SW2d 845, 852.
[13]  101 CJS. Zoning, § 286, p 1057; 2 Yokley, Zoning Law and Practice (3d ed), § 15-14; 1 Metzenbaum, Law of Zoning (2d ed), p 774.
[14]  2 Rathkopf, op. cit., p 45-9; 101 CJS, Zoning, § 293, p 1074; 2 Yokley, op. cit., § 15-12; 1 Antieau, Municipal Corporation Law, § 7.60; Metzenbaum, op. cit., pp 769, 795.
[15]  2 Rathkopf, op. cit., ch 39; 2 Yokley, op. cit., § 15-13. See, also, 1 Antieau, op. cit., § 7.58, n 7 and 8.
[16]  The delegation of authority to grant variances upon proof of unnecessary hardship or practical difficulties has been challenged for vagueness, but most courts have approved delegation in such terms. Tireman-Joy-Chicago Improvement Association v. Chernick, supra. Compare Osius v. City of St. Clair Shores (1956) 344 Mich 693, and Mitchell v. Grewal (1953), 338 Mich 81, 87, concerning exceptions as distinguished from variances.
[17]  Baker, Legal Aspects of Zoning, University of Chicago Press (1927), pp 79, 81. See, also, Metzenbaum, op. cit., at p 677 and Cunningham, Land-Use Control  The State and Local Programs, 50 Iowa Law Rev 367, 394.
[18]  See, also, Peterson v. Vasak (1956), 162 Neb 498 (76 NW2d 420, 426); National Land & Investment Company v. Kohn (1965), 419 Pa 504 (215 A2d 597, 602); Scaduto v. Town of Bloomfield (1941), 127 NJL 1 (20 A2d 649, 650); Thomas v. Board of Standards & Appeals of City of New York (1942), 263 App Div 352 (33 NYS2d 219, 230); Florentine v. Darien (1955), 142 Conn 415 (115 A2d 328, 332); Reynolds v. Zoning Board of Review of Town of Lincoln (1963), 96 RI 340 (191 A2d 350, 352); Mandelker, Delegation of Power and Function in Zoning Administration (1963), Wash U L Quar, pp 60, 63; Bryden, Zoning: Rigid, Flexible, or Fluid? (1967), 44 Journal of Urban Law  University of Detroit 287, 295. Compare Goricb v. Fox (1927), 274 US 603 (47 S Ct 675, 71 L ed 1228).
[19]  In substantially the same language, these principles are stated in Reps, Discretionary Powers of the Board of Zoning Appeals (1955), 20 Law and Contemporary Problems 280, 283-288, and in Pooley, Planning and Zoning in the United States, Michigan Legal Publications, Ann Arbor, Michigan, (1961), pp 55-59. Fundamentally, the same points are also made in a comment entitled Zoning Variances, 74 Harv Law Rev (1961), p 1396, and in Arnebergh, The Functions and Duties of a Board of Zoning Adjustment, 1 Inst on Planning and Zoning (1960), pp 109, 116-123, Southwestern Legal Foundation, Dallas, Texas; and in Strong, Powers of a Zoning Board of Adjustment, 2 Inst on Planning and Zoning (1961), pp 69, 84-94, Southwestern Legal Foundation, Dallas, Texas, and in Bryden, op. cit., pp 304 et seq., and in 2 Rathkopf, op. cit. p 45-5.
[20]  See, also, Elwyn v. City of Miami (Fla, 1959), 113 So 2d 849, 851 (the difficulties or hardships relied on must be unique to the parcel involved in the application); Brown v. Beuc, supra, at p 853.

To similar effect see 58 Am Jur, Zoning, § 204; 101 CJS, Zoning, § 291; 8 McQuillin, Municipal Corporations (1965 Rev), § 25.167, n 51-60, and § 25.168; Yokley, op. cit. (2d ed 1953), §§ 138, 139; Metzenbaum, op. cit., 770.
[21]  Brown v. Beuc, supra, at p 853; Rathkopf, op. cit., p 45-3; Ward v. Zoning Board of Appeals of Town of Hartford (1965), 153 Conn 141 (215 A2d 104); Brackett v. Board of Appeal of Building Department of City of Boston, supra, at p 961. See Bryden, op. cit., p 308.
[22]  See Sutton v. Board of Adjustment of City of Wilmington, supra.
[23]  See quotation preceding footnote 19 which states the matter alternatively, i.e. "he can secure no reasonable return from, or make no reasonable use of, his property."
[24]  The Grand Rapids ordinance states the Otto standard verbatim except that the words "which may reflect the unreasonableness of the zoning ordinance itself" in clause (2) of the Otto standard are not found in the Grand Rapids ordinance. Jones v. DeVries, supra, at p 137.
[25]  Under particular circumstances a large disparity in value might become a relevant consideration. Jones v. DeVries, supra, at p 137. Compare Smith v. Village of Wood Creek Farm (1963), 371 Mich 127, 133. See discussion in authorities collected in footnote 14.
[26]  Compare Penning v. Owens (1954), 340 Mich 355, holding invalid spot zoning by the governing body in a case where the property was capable of use within the zoning as it was before the amendment under attack.
[27]  Ward v. Zoning Board of Appeal of Town of Hartford, supra, at p 107.
[28]  2 Rathkopf, op. cit., p 65-17; 101 CJS, Zoning, § 329, pp 1133-1136, § 331, p 1140; 2 Yokey, op. cit., (3d ed) §§ 15-7, 19-5; Antieau, op. cit., § 7.68; 8A McQuillin, Municipal Corporations (1965 Rev), § 25.230.

"The function of the board of zoning adjustment, insofar as variances are concerned, is to preserve, not to destroy, zoning ordinances. It is not to second-guess the city council. Just as a court may not substitute its judgment for the judgment of the city council neither may the board of zoning adjustment. If in doubt, the board should never grant a variance.
"Actually the proper function of the variance is to provide a reasonable use for a parcel of property having unique characteristics, where the zoning ordinance itself would probably be unconstitutional as applied to that particular parcel of property because it does not permit a reasonable use of such property. In such cases a variance is necessary to sustain the constitutionality of the ordinance." Arnebergh, The Functions and Duties of a Board of Zoning Adjustment, op. cit., at p 118. (Emphasis added.)
[29]  See Cunningham Land-Use Control  The State and Local Problems, op. cit., p 394, n 138, and Mandelker, Delegation of Power and Function in Zoning Administration, 1963 Wash U L Quar, pp 60, 69, and 2 Rathkopf, op. cit., p 38-1.
[30]  Compare Searles v. Darling, supra: "We hesitate to lay down a rule that Darling's property, by his purchase of it, became positively ineligible for a variance." See, also, School Committee of City of Pawtucket v. Zoning Board of Review (1957), 86 RI 131 (133 A2d 734, 737); Bryden, op. cit., pp 306, 307; Jones v. DeVries (1949), 326 Mich 126, 138; Faucher v. Grosse Ile Township Building Inspector (1948), 321 Mich 193, 199.
