This is an appeal in a declaratory judgment action from a $38,184.13 judgment in favor of plaintiffs-appellants, Rick W. Middagh and Donnise M. Middagh, husband and wife, as lessors of a warehouse and against defendants-appellees, Stanal Sound Ltd., a Nebraska corporation, and Stan Miller as lessees. The district court found that Stanal Sound and Miller defaulted under the lease between the parties and were liable for *577 rent payments pursuant to the lease from the period of November 15, 1984, to June 18, 1986, the date a decree of foreclosure was entered on the subject property. The district court also granted the Middaghs an amount for real estate taxes through June 1986.
The lease at bar was effective December 15,1979, and was to continue for a term of 10 years. The terms of the lease and the initial default of Stanal Sound and Miller were adjudicated in
Middagh
v.
Stanal Sound Ltd.,
On April 3,1986, the Middaghs brought this action for lease payments accruing November 15, 1984, and thereafter, plus a 1-year acceleration of lease payments pursuant to the addendum. In addition to rent, the Middaghs also requested reimbursement for unpaid taxes, insurance, and other maintenance under the lease. Stanal Sound and Miller answered, affirmatively alleging that the Middaghs breached their duty to mitigate damages. The Middaghs amended their petition in this action on January 5,1987, updating the amount of arrearage.
On June 18, 1986, the district court for Buffalo County entered a decree of foreclosure on the subject property. The foreclosure was instituted by the lender which ultimately funded the initial lease agreement between the Middaghs and Stanal Sound and Miller. On July 7, 1986, the Middaghs requested a stay of the foreclosure for 4V2 months, but the record does not reflect any further action in the foreclosure. In particular, there is no record of confirmation of the sale of the subject property in the foreclosure proceedings.
The hearing in this case was held March 2, 1987. The trial court determined that Stanal Sound and Miller defaulted on lease payments accruing as of November 15, 1984. With *578 reference to appellees’ allegation that the Middaghs failed to mitigate damages, the trial court found that the Middaghs took sufficient steps to mitigate damages. Nonetheless, the trial court concluded that the decree of foreclosure, referred to above, entered June 18,1986, left the Middaghs with “no right to recover rental from a nonpossessory tenant from and after the date of foreclosure.”
All parties moved for a new trial, and their respective motions were overruled. The Middaghs timely appealed. During the pendency of this appeal, we were advised that Stanal Sound had gone into some form of bankruptcy. In October 1989, we were advised the automatic stay of proceedings involving Stanal Sound had been lifted. The Middaghs and Stanal Sound were advised of the lifting of the stay. We have not been further advised, so this opinion is concerned only with the adjudication of rights between the Middaghs and appellee Miller. On appeal, Middaghs contend that the trial court erred (1) “in basing its decision on issues that were not tried to the court” because Miller did not raise the matter of the foreclosure as a new matter in a pleading and (2) “in basing its decision on facts not of record” because there was no record of a confirmation of sale affecting the Middaghs’ right to possession of the subject property. The Middaghs also assign as error the trial court’s action in holding that the Middaghs are not entitled to lease payments accruing after the date the foreclosure decree was entered. We agree with the general proposition of the third assignment of error and, for the reasons set out below, affirm the case as to the determination that Miller is liable to the Middaghs under the lease agreement. As to the trial court’s finding as to mitigation of damages, we remand the cause for a recalculation of damages only.
We held in Middagh I that Stanal Sound and Miller were liable for the accrued lease payments and for a 1-year acceleration of the lease payments. No issue is raised on appeal concerning the Middaghs’ right to an additional 1-year acceleration under the addendum, which states: “Exercise of this option by the Lessor shall not constitute a waiver of any other right set out in the Lease or of the right of the Lessor to exercise the same right during each succeeding period of twelve *579 (12) months.”
The addendum also states that a default by Miller triggers the remedies stated in paragraph 14 of the lease in addition to the acceleration clause. Paragraph 14 states that upon default,
LESSOR may immediately, or at any time thereafter, re-enter the premises, repossess the same . . . and dispossess the LESSEE____
If LESSOR shall elect to declare forfeiture under this Article, it shall be entitled to receive from LESSEE the difference in rental, if any, between the rent reserved hereunder for the unexpired portion of the term and any lesser amount which LESSOR, in the exercise of reasonable diligence, is able to procure for the unexpired term of this Lease____
Upon Miller’s default, the Middaghs wrote Miller on November 24, 1982, notifying him of the default, and demanding that Miller “quit the premises” if the default was not timely cured. Consequently, Miller’s failure to cure the default terminated his right to possess the subject property, and the Middaghs were discharged from their covenant to protect Miller’s quiet enjoyment of this property.
It is also apparent that Miller abandoned the property. As we stated in
Mason
v.
Schumacher,
*580
In
S.N. Mart, Ltd. v. Maurices Inc., ante
p. 343,
We remand this action to the trial court to recalculate, in accord with this opinion, the payments due from Miller to the Middaghs for the period from November 15, 1984, to November 15,1987, as prayed for by the Middaghs.
Affirmed in part, and in part reversed and remanded on the issue of damages.
