Dennis Sluciak (Appellant) appeals from an order of the Court of Common Pleas of Washington County (trial court) that determined that his property was not landlocked as a result of a taking by the Commonwealth of Pennsylvania, Department of Transportation (Department).
Appellant’s parents, Helen and Joseph Sluciak (Mr. and Mrs. Sluciak), purchased a sixty acre parcel of land in the Township of Cecil, Washington County, in April 1938. In August 1938, Mary Dagsher (Dagsher) and her husband purchased the adjoining property. Mr. and Mrs. Sluciak, who used the property as a farm, had frontage on Grude-vich Road but used a driveway that cut across a “sliver” of property owned by Dagsher to access Grudevieh Road (Sliver).1 Appellant and Mr. and Mrs. Sluciak have maintained this access over the Sliver since 1938. Appellant and Mr. and Mrs. Sluciak attempted to purchase the Sliver at various times since 1938 without success. By the 1970’s Appellant had established a landscaping business on the property and later headquartered an excavating business there. In 1985, Mrs. Sluciak subdivided the property and gave one parcel to Appellant and one parcel to her other son. Appellant and his brother and, before that, Appellant’s father were solely responsible for the maintenance and repair of the Sliver.
Prior to the condemnation, Appellant’s property had eight hundred linear feet of frontage on Grudevieh Road, which Appellant could have used for access. On April 21, 1993, the Department filed a declaration of taking and acquired 12.190 acres of Appellant’s property including the eight hundred feet of frontage. Appellant received a copy of the declaration of taking, notice of condemnation and property plan. Appellant did not file preliminary objections to the declaration of taking. On May 17, 1993, Appellant signed an estimated just compensation application and subsequently received estimated just compensation of $145,000. The Department valued Appellant’s property at $460,000 prior to the taking and at $315,000 after the taking.
On October 12, 1993, Appellant petitioned for appointment of a board of viewers (board). Before the board on March 24, 1994, Appellant testified that he had no legal access to his property after the taking and that the only access was over the Sliver, which he did not own. Appellant asserted that the property was landlocked by the condemnation, that the property was an assembled economic unit and the value after the taking was zero, resulting in damages greater than three million dollars.2 On October 28, 1994, the board found that Appellant’s property did not abut Grudevieh Road but that he had either an irrevocable license or an easement by necessity over the Sliver. The board also found that the assembled economic unit doctrine was inapplicable and found damages in the amount of $145,000. On November 22, 1994, Appellant appealed to the trial court.
Subsequently, in February 1997, the Department condemned the, Sliver and insured that Appellant has access to Grudevieh Road. Both Appellant and the Department requested that the trial court schedule a hearing on the access issue. Originally, this request was denied as was the parties’ request for reconsideration. However, on April 2, and April 14, 1997, the trial court held hearings to determine whether Appellant’s property was landlocked.3 At the hearing Appellant testi*621fied that he, and his father previously, tried to purchase the Sliver but were unsuccessful. Notes of Testimony, April 2, 1997, (N.T.) at 23-24; Reproduced Record (R.R.) at 115-116. On cross-examination, Appellant stated that he spent “a couple of thousand dollars” improving the driveway over the Sliver with ripped up asphalt, reddog, stone and slag. N.T. at 43; R.R. at 135.
Jonathan G. Mounts (Mounts), a registered professional engineer and a professional land surveyor, testified on Appellant’s behalf. Mounts performed a survey of Appellant’s property on May 22, 1987. Mounts testified within a reasonable degree of engineering certainty that Appellant’s property did not border Grudevich Road at the location of the Sliver and that Appellant had to travel over the Sliver to access Grudevich Road. N.T. at 73-74; R.R. at 165-166. Mounts also testified that a 1983 survey prepared by Engle-hart-Power Associates inaccurately indicated that Appellant’s property bordered Grude-vich Road at the Sliver in the vicinity of the driveway. Mounts concluded that Appellant’s property was landlocked. N.T. at 78; R.R. at 170.
Mrs. Sluciak testified that Mr. and Mrs. Dagsher owned the Sliver and that she and her husband unsuccessfully attempted to purchase it, but that she and her family continued to cross the Sliver. N.T. at 94; R.R. at 186. David Johnson (Johnson), son-in-law of Mrs. Dagsher, testified that neither Appellant nor his family ever acquired the Sliver or an easement or a right-of-way. N.T. at 104; R.R. at 196. He testified that it was his understanding that Appellant had permission to cross the Sliver.4
Michael H. Dufalla (Dufalla), Department district engineer and formerly president of Englehart-Power Associates, testified for the Department that he surveyed Mrs. Sluciak’s property in 1983 and determined that the property abutted Grudevich Road and concluded Appellant owned the Sliver. N.T. at 112-113; R.R. at 204-205. Charles J. Bran-nigan, formerly Right-of-Way administrator for the Department, testified that the Department did not consider the property to be landlocked based on plans provided by Appellant. N.T. at 146; R.R. at 238. When Walter Cameron, the Department’s attorney, attempted to question Brannigan concerning the Department’s subsequent condemnation of the Sliver, Appellant’s attorney, W. Patrie Boyer, objected on the grounds that this Court in Appeal of Philadelphia Electric Co., 135 Pa.Cmwlth. 100, 580 A.2d 424 (1990), petition for allowance of appeal denied, 528 Pa. 615, 596 A.2d 161 (1991) (PECO) disallowed evidence of any subsequent condemnation. The trial court sustained the objection. N.T. at 148-149; R.R. at 240-241.
Sidney Mastrangelo, Cecil Township building inspector, testified that Appellant had submitted an application for a building permit which included a sketch of his property that indicated it abutted Grudevich Road at the Sliver. N.T. 161-164; R.R. at 252-255. David Hirschle, Cecil Township planning director, testified that a survey prepared by Pittsburgh Design and Equipment for Sluc-iak Contracting, Inc. indicated that Appellant’s driveway over the Sliver abutted Grudevich Road. Finally, Francis Chiapetta, the appraiser retained by the Department, testified that he did not appraise Appellant’s property as landlocked because of the access over the Sliver. N.T. at 174; R.R. at 266.
On April 10, 1997, the trial court determined that Appellant’s property was not landlocked for the following reasons:
[Tjhe Commonwealth of Pennsylvania has cured the access issue. The various sur*622veys and applications for braiding permits/subdivisions relative to Condemnor’s realty show a discrepancy in the property line for his driveway onto Grudevich Road. The record reveals that from 1938 to the present date the Sluciak family has utilized the subject driveway for ingress and egress. In addition, the Sluciaks have been solely responsible for the maintenance, repair and snow removal of said driveway. Finally, Condemnor has transacted his business from the remaining tract of land uninterupted [sic].
Trial Court Order at 1; R.R. at 83.
Appellant contends that the trial court erroneously determined that he has the right to access Grudevich Road over the Sliver and that the trial court committed an error of law when it partially based this determination on the subsequent condemnation of the Sliver by the Department.5
In PECO, the Department filed a declaration of taking for approximately fifteen acres owned by the Philadelphia Electric Company (company) on August 21, 1972. The Department’s taking resulted in the severing of the company’s property thereby cutting off access between a service building and a headquarters for overhead transmission maintenance. Beginning in 1965, officials from the company and the Department had discussed the need for an access road and, on February 5, 1973, the Department filed a notice condemning a highway easement over a parcel of land in order to afford the company access. PECO, 580 A.2d at 425-426. A board of viewers awarded the company general damages and moving expenses totaling $2,724,370.00. Id., 580 A.2d at 426. The Court of Common Pleas of Montgomery County confirmed but modified the award, and the parties appealed. The company argued that consideration of the access road, which was acquired six months after the taking of the company’s property, was not relevant in evaluating the fair market value of the remaining property. This Court agreed, noting that the plain language of Section 602(a) of the Eminent Domain Code (Code)6 requires that post condemnation value is to be determined immediately after condemnation. Id., 580 A.2d at 429. Section 602(a) of the Code states, “Just Compensation shall consist of the difference between the fair market value of the condemnee’s entire property interest immediately before the condemnation and as affected thereby, and such other damages as are provided in this code.” (emphasis added). 26 P.S. § 1-602(a). Under Section 606 of the Code, 26 P.S. § 1-606, “Future damages and general benefits which will affect the entire community beyond the properties directly abutting the property taken shall not be considered in arriving at the after value.” See Department of Transportation v. Lutz, 14 Pa.Cmwlth. 448, 322 A.2d 800 (1974).
Presently, the trial court sustained the objection of Appellant’s counsel and excluded evidence of the Department’s condemnation of the Sliver because it occurred after the taking of Appellant’s property, in accordance with PECO. Notwithstanding the ruling to sustain the objection, the trial court went on to base its holding that Appellant’s property was not landlocked, in part, because the Department’s subsequent condemnation “cured” the access issue. By focusing on the subsequent condemnation, the trial court erroneously based its decision on evidence properly excluded for the purpose of after value. A court may not base an adjudication on matters which do not appear on the record. Claremont Properties, Inc. v. Board of Supervisors of Middlesex Township, 118 Pa. Cmwlth. 527, 546 A.2d 712 (1988).
However, the trial court did not base its decision solely on the Department’s condemnation of the Sliver and this subsequently acquired access. The trial court also considered that Appellant and his family continually used and maintained the driveway since 1938. Appellant contends that the trial *623court’s conclusion is tantamount to declaring that Appellant had a right of access over the Sliver. Appellant denies that he acquired any interest in the Sliver, and asserts he has no easement or right-of-way and does not enjoy an irrevocable license.
It is clear that Mrs. Dagsher, prior to its condemnation, never transferred any formal right of access over the Sliver to Appellant or his predecessors in title. Appellant, Mrs. Sluciak, and Johnson all testified that both Appellant and his father unsuccessfully attempted to purchase the Sliver. In order to establish an easement by prescription to use a roadway a party must prove an open, notorious, continuous, uninterrupted, adverse, and hostile use for twenty-one years. Keefer v. Jones, 467 Pa. 544, 359 A.2d 735 (1976). A party’s use of a roadway is not adverse if the use is with the owner’s permission. Dulaney v. Rohanna Iron and Metal, Inc., 344 Pa.Super. 45, 495 A.2d 1389 (1985). Although Appellant maintains in his brief that his use of the Sliver was with Dagsher’s permission, a review of the record reveals only vague references to Dagsher’s alleged permission in Johnson’s testimony, and the trial court never directly addressed the issue.
A license is a personal and initially revocable privilege to perform an act or series of acts on the land of another. Hennebont Co. v. Kroger Co., 221 Pa.Super. 65, 289 A.2d 229 (1972).
A license to use another’s land will become irrevocable where the licensee, in reliance upon it, treats his land in a way he would not have treated it except for the license, that is, by spending money for such changes as would prevent his being restored to his original position.
Pennsylvania Game Commission v. Bowman, 81 Pa.Cmwlth. 381, 474 A.2d 383, 385 (1984), quoting, Bieber v. Zellner, 421 Pa. 444, 220 A.2d 17 (1966).
Appellant testified that he made considerable improvements to his property involving the expenditure of over one million dollars. However, there is nothing in the record to clearly indicate whether Appellant made these improvements in reliance upon any permission by Dagsher to traverse the Sliver and access Grudevich Road.
The trial court failed to make any findings of fact concerning the type of interest or permission Appellant had, if any, to traverse the Sliver. Therefore, we are incapable of reviewing the legal status of Appellant’s access, at the time of the taking.
We do not agree with the Department’s contention that Mrs. Sluciak created an easement either expressly or by implication when she conveyed the property to her sons merely because her subdivision plan indicated that her property included the Sliver. Surveys by both the Department and Appellant indicated that this property did not belong to Appellant or his parents. Nor did Appellant create a right of access over the Sliver by filing a subdivision plan with an inaccurate boundary.
The Department contends that Appellant waived any right to claim a total taking of his property because he failed to file preliminary objections to the declaration of taking. Section 406 of the Code, 26 P.S. § 1-406, provides in pertinent part:
(a) Within thirty days after being served with notice of condemnation, the eon-demnee may file preliminary objections to the declaration of taking. The court upon cause shown may extend the time for filing preliminary objections. Preliminary objections shall be limited to and shall be the exclusive method of challenging (1) the power or right of the condemnor to appro-' priate the condemned property, unless the same has been previously adjudicated; (2) the sufficiency of the security ... (3) any other procedure followed by the condem-nor or (4) the declaration of taking. Failure to raise these matters by preliminary objections shall constitute a waiver thereof.
The Department cites West Whiteland Associates v. Department of Transportation, 690 A.2d 1266 (Pa.Cmwlth.1997), petition for allowance of appeal denied, 550 Pa. 714, 705 A.2d 1313 (1997) for support. In West Whiteland, this Court held that the con-demnee waived the right to contest a description of the condemned property set forth in the plan when the condemnee failed to preliminarily object to the description set forth in the plot plan.
*624Here, Appellant does not contest the plot plan. In fact, as the trial court stated when it refused to dismiss the case, the plot plan reflects that Appellant must cross the Sliver to access Grudevich Road. Appellant did not challenge the power of the Department to take his property, the security or any Department procedure. Similarly, Appellant did not challenge the declaration of taking itself or that it was procedurally deficient. See Appeal of McKonly, 152 Pa.Cmwlth. 211, 618 A.2d 1169 (1992). Appellant asserts his property was landlocked by the condemnation and that the value after the taking was zero. Appellant was not required to file preliminary objections under the Code.
Accordingly, we reverse because the trial court improperly concluded the subsequent condemnation of the Sliver “cured” the access issue. We remand to the trial court for a determination whether Appellant had any interest, be it right-of-way, easement, license or irrevocable license over the Sliver and the effect of that interest, if any, on whether Appellant’s property was landlocked when determining the after value.
ORDER
AND NOW, this 18th day of March, 1999, we reverse because the Court of Common Pleas of Washington County improperly concluded the subsequent condemnation of the Sliver “cured” the access issue. We remand to the Court of Common Pleas of Washington County for a determination whether Dennis Sluciak had any interest, be it right-of-way, easement, license or irrevocable license over the Sliver and the effect of that interest, if any, on whether Dennis Sluciak’s property was landlocked when determining after value of the property.
. The “sliver” of property is approximately twelve feet long by twenty feet wide.
. The Assembled Economic Unit Doctrine is a judicially created doctrine which determines whether machinery, equipment and fixtures constitute part of an assembled economic unit and therefore part of the condemned realty, entitling the owner to just compensation for their taking. Marx Stationery & Printing Co. v. Redevelopment Authority of the City of Philadelphia, 675 A.2d 769 (Pa.Cmwlth.1996).
.“Landlocked” is a term applied to a piece of land belonging to one person and surrounded by land belonging to other persons, so that it cannot be approached except over their land. Black’s Law Dictionary 878 (6 th ed.1990).
. Appellant's attorney, W. Patrie Boyer, questioned Johnson about Appellant crossing the Sliver:
Q: If Mr. Chiappetta would have asked you whether or not Mr. Sluciak had a right to cross your property, what would you have told him? A: He had permission to cross, but they had no right-of-way.
Q: What was the nature of that permission? A: As I said when I was up here before, years ago what I heard, he wanted to buy access and Mr. Dagsher wouldn’t give it to him. He wanted to trade land, and they never came to an agreement on the deal.
Q: Is it your understanding that Mrs. Dagsher and you gave Mr. Sluciak permission to cross it until such time as that permission were [sic] withdrawn?
A: That’s right.
N.T. at 177-178; R.R. at 269-270.
. Our review of a trial court decision in an eminent domain proceeding is limited to determining whether the trial court abused its discretion, committed an error of law, or whether its findings and conclusions are supported by sufficient evidence. Appeal of Waite, 163 Pa.Cmwlth. 283, 641 A.2d 25, petition for allowance of appeal denied, 539 Pa. 657, 651 A.2d 543 (1994).
. Act of June 22, 1964, Special Sess., P.L. 84, as amended, 26 P.S. § l-602(a).