OPINION
Philip and Dolores Ammer appeal from a summary judgment quieting title to a parcel of real property in the Arizona Water Company (AWC). On appeal, they argue that the trial court erred in holding that it was necessary for them to show that they had exclusive possession of AWC’s property in order to establish a prescriptive easement. They also argue that the trial court erred in granting summary judgment when genuine issues of material fact existed. We reverse and remand for further proceedings.
FACTUAL AND PROCEDURAL HISTORY
In reviewing the trial court’s grant of a motion for summary judgment, we state the facts in the light most favorable to the parties who opposed the motion.
Wright v. Hills,
The Ammers bought the two lots that they had been leasing in 1979. They continued to operate the store until 1984, when they sold their business to Richard and Shirley Bishop and leased the Bishops the store building and the land. In 1987, the Bishops sold the business to Wesley and Margaret Measday. The Ammers then leased the building and the land to the Measdays.
In a letter dated February 3, 1988, AWC informed the Ammers that part of the store’s parking lot was encroаching upon its property. The parties were unable to reach a mutually satisfactory resolution of the problem, and AWC ultimately fenced the portion of the lot that encompassed its property. The Ammers filed a complaint against AWC and the company that had erected the fence. They asked the court to declare that they had a prescriptive right to use thе section of AWC’s property in question as a parking lot. They also asked that AWC and the fence company be temporarily and permanently restrained from interfering with that use. The trial court granted the preliminary injunction, and the fence was removed. The Ammers subsequently dismissed their complaint against the fence company.
AWC answered the Ammers’ complaint and filed a counterclаim in which it alleged trespass to its property and sought quiet title to the property and reasonable rent for the Ammers’ use of it. AWC then filed a motion for partial summary judgment in which it contended that the Ammers were not entitled to a prescriptive easement because they had not established continuous adverse use of the property for the ten-year period required by Arizona’s adverse possession statute. In response, the Ammers argued that they and their lessees had continuously used the property for parking since 1971. They also argued that these successive interests could be tacked to meet the ten-year requirement and that the other elements of adverse use had been established.
The trial court granted AWC’s motion for partial summary judgment, finding that the Ammers had not been in possession of AWC’s property for a continuous period of ten years. AWC subsequently filed a motion for summary judgment on its counterclaim. The trial court granted the motion, quieting title to the disputed property in AWC and awarding it nominal damages. This appeal followed.
DISCUSSION
We will affirm the trial court’s grant of a motion for summary judgment if there is no genuine issue of material fact in dispute and the moving party is еntitled to judgment as a matter of law.
Orme School v. Reeves,
The use need not have bеen carried out by the same person for the entire ten years.
Cheatham v. Vanderwey,
In order to acquire title by adverse possession, a person must demonstrate that he had exclusive possession of the property at issue throughout the ten-year period.
Overson v. Cowley,
An easement may be appurtenant or in gross.
See Solana Land Co. v. Murphey,
*210
A prescriptive eаsement appurtenant to a dominant tenement can only be created in favor of the person who has a fee simple estate in the dominant tenement. 2 G. Thompson,
Commentaries On The Modem Law Of Real Property
§ 321 (1980); 4 H. Tiffany,
The Law Of Real Property
§ 1193 (1975). A tenant for life or for years cannot establish such a right in his own behalf.
Deregibus v. Silberman Furniture Co.,
When a tenant’s adverse use is within the terms of his tenancy, it inures to the benefit of his landlord.
Olsen v. Noble,
If a tenant initiates an adverse use that is not within the terms of his tenancy, the use will remain a trespass and will not ripen into a prescriptivе right no matter how long it continues.
Bell,
In the present case, the Ammers leased the property on which the store was located from May of 1971 until September of 1979, a period of more than eight years. They then occupied the property as its owners from Sеptember of 1979 until April of 1984, a period of four and one-half years. They subsequently leased the property to the Bishops from April of 1984 until October of 1987, a period of three and one-half years. Finally, they leased the property to the Measdays in October of 1987. The Measdays had been occupying the property for approximately four months when AWC asserted its ownership of а portion of the parking lot in February of 1988.
From the foregoing facts, it is evident that the Ammers could not demonstrate the continuous ten-year period of adverse use necessary to establish a prescriptive easement unless they were entitled to tack at least a portion of the time in which they used AWC’s property as tenants of the Jacksons and the Faulkners. In order to tack this period, it was necessary for them to show that their use of AWC’s property fell within the terms of a lease, agreement, or understanding between themselves and their lessors. Unfortunately, however, neither side addressed this prerequisite in the trial court. The lease does not contain any reference to AWC’s property, and the Ammers did not present any evidence of an agreement or understаnding that encompassed its use. Although AWC argues on appeal that the Ammers cannot tack the *211 period during which they used its property as tenants of the Jacksons and the Faulkners, it did not raise this argument in the trial court.
We will affirm a grant of summary judgment on an issue raised for the first time on appeal only if no conceivable facts exist under which the nonmoving party could prevail on the issue.
Rhoads v. Harvey Publications, Inc.,
AWC argues that the Ammers did not show that they had used its property for parking prior to 1979. We disagree. In response to AWC’s motion for summary judgment, the Ammers submitted an affidavit in which they stated that they had been using a portion of AWC’s property for parking since 1971 and that they had blacktopped that portion in 1975. They also submitted an affidavit by Wilson аnd Lucille Palmer. The Palmers stated that the parking lot was graveled when they first became customers of the Ammers’ store in 1971. They further stated that the lot had been blacktopped in 1975 and that they had seen hundreds of the store’s customers park in the lot each year since 1971. AWC did not controvert these facts.
AWC next argues that the Ammers did not establish their right to tack the periods during which they leased their lаnd to the Bishops and the Measdays. We initially note that since the Ammers occupied the land adjacent to AWC’s property as tenants for over eight years and as owners for four and one-half years, their inability to tack the periods during which they leased the land to the Bishops and the Measdays would not necessarily prove fatal to their claim. However, we also believe that thе Ammers demonstrated the right to tack the periods in question.
As we have explained, a landlord may tack a period of his tenant’s adverse use to periods of his own adverse use as long as there is privity of estate between him and his tenant
with regard to the adverse use. See Chandler,
In response to AWC’s motion for summary judgment, the Ammers presented the affidavits of Richard Bishop and Wesley Measday. Bishop and Measday both stated that they had treated the entire paved parking area as part of the leased premises. Bishop said that he had always beliеved that the whole parking area was included in the lease, and Measday said that Philip Ammer had told him that the entire area was included before he rented the property. AWC argues that these affidavits should not be considered because they violate the parol evidence rule by adding to the terms of the lease. We disagree.
The parol evidence rule prohibits the admission of parol evidence to vary, add to, or contradict the terms of a written contract that is meant to be the final and complete statement of the parties’ agreement.
Lambros Metals v. Tannous,
71
*212
Ariz. 53,
AWC next points out that the Bishops’ lease, by its terms, expired on April 2, 1987, and that the Measdays’ lease did not begin until October 12, 1987. It contends that this gap between the termination of the Bishops’ lease and the commencement of the Measdays’ lease broke the continuity of the adverse use. However, Richard Bishop stated in his affidavit that he and his wife actually leased the property until October 12, 1987. AWC maintains that Bishop’s affidavit cannot be considered because it violates the parol evidence rule by adding to or varying the terms of the lease. Again, we disagree.
As we have explained, the рarol evidence rule is not applicable in this case. In addition, we note that while the rule generally prohibits the admission of oral statements or written agreements that were made prior to or contemporaneously with the execution of a contract, it does not prohibit the admission of evidence that the parties to a contract subsequently modified it or enterеd into a new agreement.
Eng v. Stein,
In their affidavit, the Ammers essentially stated that they had transferred their adverse use of AWC’s property to the Bishops and the Measdays. The affidavits of Richard Bishop and Weslеy Measday confirm that the transfer actually occurred and that both sets of tenants understood that they were to continue the use of the entire parking lot, including the disputed area, as part of their tenancies. We note that under Arizona law, a person does not have to know that the property that he is using belongs to another in order to establish a prescriptive easеment.
See Kay v. Biggs,
We also note that an understanding on the part of a tenant that the use of certain property is included in the terms of his tenancy may be inferred from the circumstances.
Deregibus,
CONCLUSION
The Ammers could not demоnstrate the continuous ten-year period of adverse use necessary to establish a prescriptive easement unless they were entitled to tack at least a portion of the time during which they used AWC’s property as tenants of the Jacksons and the Faulkners. Since the record before us indicates that AWC’s property was never adversely used until the Ammers built the store and created the parking lot, it seems unlikely that there was such an agreement or understanding between the Ammers and their lessors. However, because the trial court did not consider this issue, the Ammers are enti *213 tied to an opportunity on remand to present whatever evidence they may have concerning it.
The judgment of the trial court is reversed and the matter is remanded for proceedings consistent with this оpinion.
Notes
. Prescription is based upon the use of land and results in the acquisition of a nonexclusive right to continue to use it, while adverse possession is based upon the possession of land and results in the acquisition of fee title to it.
See
2 G. Thompson,
Commentaries On The Modern Law Of Real Property
§ 340 (1980);
Etz v. Mamerow,
. Arizona Revised Statutes section 12-521 (A) provides in pertinent part as follows:
1. “Adverse possession” means an actual and visible appropriation of the land, commenced and continued under a claim of right inconsistent with and hostile to the claim of another.
2. “Peaceable possession” means possession which is continuous, and not interrupted by an adverse action to recover the estate. Arizona Revised Statutes section 12-526(A)
provides as follows:
A person who has a cause of action for recovery of any lands, tenements or hereditаments from a person having peaceable and adverse possession thereof, cultivating, using and enjoying such property, shall commence an action therefor within ten years after the cause of action accrues, and not afterward.
. Arizona Revised Statutes section 12-521(B) provides as follows:
"Peaceable and adverse possession” need not be continuеd in the same person, but when held by different persons successively, there must be privity of estate between them.
. The trial court appears to have granted summary judgment in AWC’s favor on the ground that the Ammers had not shown the ten-year period of continuous use necessary to create a prescriptive easement. However, the court also found that the Ammers had not been in "exclusive” possession of AWC’s property for ten years. The court erred in listing exclusive possession as one of the prerequisites for establishing an easement by prescription.
