(dissenting). Because I believe the majority opinion is contrary to basic principles of equity and contract law, I dissent.
The factual basis for this appeal is as follows: Defendant, Olga Scarpace, and her husband, Laurence, owned, as tenants by the entireties, a parcel of land in Taylor, Michigan. In 1969, Olga Scar-pace listed the land for sale with the Earl Keim Realty Company. After some negotiations, she accepted American Electrical Steel Company’s (hereinafter referred to as American) offer to purchase. American gave a $500 deposit to her real estate agent. When Mrs. Scarpace accepted the offer to purchase, she signed both her name and that of her husband, adding "P.A.” after the latter signature to indicate that she was vested with his power of attorney. At all times during the negotiations, she stated that she was so empowered. She also exhibited a document to both her broker and American, entitled "Power of Attorney”, which she claimed her husband had executed.
One of the conditions of the sale was that the seller petition the City of Taylor for a rezoning of the property. After waiting a period of time, *194American, at some expense, sought and obtained the zoning variance. Nonetheless, Mrs. Scarpace refused to consummate the transaction; the property was never sold.
American sued the defendant, requesting the court to order specific performance of the agreement. Mrs. Scarpace defended on the theory that her husband was incompetent at the time he executed the power of attorney, and that even if he was competent, the power of attorney did not authorize her to sell jointly held property. Thus, she claimed that his signature was null and void, and because she and her husband held the property by the entireties, her signature alone was insufficient to ratify the agreement.1 After hearing the evidence, the trial judge ruled that the power of attorney given to Mrs. Scarpace did not include the power to sell jointly held property. He thus denied the requested specific performance, but ordered defendant to repay American the money expended in securing the rezoning.
Under the majority opinion, plaintiff is denied specific performance on two bases: 1) laches, and 2) failure to show detriment under a promissory estoppel theory. These holdings bear examination.
The majority indicates that plaintiff’s action for specific performance is barred by laches. Now this holding will undoubtedly come as a surprise to both plaintiff and defendant. It ought to because at no time during the lower court proceedings did either party attempt to argue the doctrine of laches. The issue is not mentioned on appeal. The majority has sua sponte raised the point. The law in this area is clear. In Boden v Renihan, 299 Mich 226, 241; 300 NW 53, 59 (1941), our Supreme Court *195held that if the defense of laches was not raised by a party in the lower court, the issue could not be considered by an appellate court. The obvious implication of this decision is that if the Supreme Court could not consider the defense of laches when raised for the first time on appeal, the Court of Appeals clearly can not consider it when it has never been raised.2
Furthermore, the majority states that during the three-year period following the breach, the plaintiff "did nothing to 'enforce’ the contract”. The record does not support this conclusion; the record is simply silent on this point. The majority has no basis for concluding that nothing was done during the three-year gap. The questions of why plaintiff waited three years to sue, and what efforts it made to settle during the interim, were not dealt with at the trial. They were irrelevant until the majority raised the laches issue.
The majority deals with the estoppel question by applying the principles of "promissory estoppel”. This doctrine, however, is inapplicable here. Traditionally, the "promissory estoppel” doctrine is applied when "legal” consideration is missing from a contractual agreement. The classic situation involves a gratuitous promise made by the promisor, with the promisee not offering anything in exchange. In some cases involving gratuitous promises, courts find consideration flowing from the promisee’s reasonable reliance on the promise, if the promisee relies to his detriment. See 1 Willi*196ston on Contracts (3d ed), § 140, pp 607-620; Calamari and Perillo, Contracts, § 105, p 179 (1970).
The principle that properly controls this case is that of "equitable estoppel” or "estoppel in pais”. Estoppel in pais operates to prohibit a person who has made a knowing misstatement of fact from later denying the truth of that statement. See Williston, supra, § 139, pp 601-604. The Michigan Supreme Court states the rule as follows:
"Estoppel is a bar which precludes a person from denying the truth of a fact which has in contemplation of law become settled by the act of the party himself, express or implied. If one’s conduct induces another to believe in the existence of certain facts, and the other acts thereon to his prejudice, the former is estopped to deny that the state of facts does in truth exist.” (Citations omitted.) Detroit Savings Bank v Loveland, 168 Mich 163, 172; 130 NW 678, 682 (1911).
See also, Maxwell v Bay City Bridge Co, 41 Mich 453; 2 NW 639 (1879), Hetchler v American Life Insurance Co, 266 Mich 608; 254 NW 221 (1934).
The doctrine of promissory estoppel does not apply to the facts of this case, then, because this Court ought not examine the validity of the executed power of attorney. Mrs. Scarpace represented to both plaintiff and her broker that she was empowered to sign for her husband. She signed the purchase agreement in her name and for her husband. The purchase agreement is valid on its face. The doctrine of estoppel in pais prohibits Mrs. Scarpace from questioning her husband’s competency or the validity of the power of attorney. That being the case, the contract was valid, adequate consideration was present, and the doctrine of promissory estoppel is irrelevant.
Finally, the majority states that plaintiff has *197suffered no harm because of defendant’s breach. This statement is clearly wrong. Plaintiff did not attempt to purchase other property at the time it contracted with Mrs. Scarpace, because it felt that she would honor her contract. Plaintiff later had to purchase other property, and as the majority points out, property prices had since risen. Plaintiff also secured the rezoning of defendant’s property.
The majority also intimates that plaintiff suffered no harm because it was later able to purchase other land. No citation need be given for the proposition that land is thought to be a unique commodity under our legal system. Plaintiff has a right to defendant’s land; it is harmed in not getting it. Furthermore, no testimony was taken as to plaintiff’s costs in securing the other piece of property because no one at the trial stage thought it relevant. There is no support in this record for the majority’s conclusion that plaintiff is unharmed.
In conclusion, we have a situation here where the majority is aiding a defendant who has no equities in her favor. Mrs. Scarpace lied to the plaintiff and breached her contract. Because her husband has since died, she now owns the property outright. The wrongdoer is now the only party benefiting from her own wrongdoing. This is not equity.
I dissent.
Defendant’s husband died two years prior to the commencement of this lawsuit.
It has long been the holding of this Court that the failure to either raise an issue on appeal or to brief it properly precludes our considering it. See, Kucken v Hygrade Food Products Corp, 51 Mich App 471, 473; 215 NW2d 772, 773 (1974), Erdman v Yolles, 62 Mich App 594, 599; 233 NW2d 667 (1975), County of Ingham v Dept of Social Services, 62 Mich App 683, 685 n 1; 233 NW2d 833 (1975), People v Sims, 62 Mich App 550, 555; 233 NW2d 645 (1975).