OPINION
Justice NIGRO.Appellants the County of Pike and the Pike County Board of Assessment (the “Board”) appeal from the Commonwealth Court’s order which reversed the trial court’s order denying the tax assessment appeal of Appellee Saw Creek Community Association (the “Association”). For the reasons that follow, we affirm.
*438Saw Creek Estates is a planned community in Pike County and Monroe County, Pennsylvania, created pursuant to the Pennsylvania Uniform Planned Community Act (the “Act”).1 The Association is a nonprofit corporation organized by the homeowners in Saw Creek to manage Saw Creek’s affairs. See 68 Pa.C.S. § 5301. Saw Creek primarily consists of townhouses, which are independently owned by homeowners in Saw Creek. The community, however, also includes: roads; ponds; green areas; tennis courts; a pool; a clubhouse; a water tower; a well house; a community building in which there are various recreational facilities, a meeting room, and a restaurant; and a single-story building in which there is a real estate sales office (the “sales office”). All of the latter property is owned by the Association, rather than by individual homeowners, but it may nevertheless be used by any of Saw Creek’s residents.
Prior to the 2000—2001 tax year, the Board reassessed the value of properties within Saw Creek. In doing so, it determined that the roads, ponds, green areas, water tower, and well house, as well as the community building’s recreational facilities and meeting room, qualified as “common facilities” of Saw Creek pursuant to section 5103 of the Act, which defines common facilities as: “Any real estate within a planned community which is owned by the association or leased to the association. The term does not include a unit.” 68 Pa.C.S. § 5103. The Board then found that these facilities were exempt from separate assessment and taxation as common facilities based on section 5105(b)(1) of the Act, which directs that “no separate assessed value shall be attributed to and no separate tax shall be imposed against common facilities.... ” Id. § 5105(b)(1). In contrast, the Board found that the restaurant and sales office did not qualify as common facilities under section 5103, and therefore, had to be separately assessed and taxed. Consequently, the Board assessed the restaurant as having a value of $142,190 and the sales office as having a value of $33,480.
*439The Association filed an appeal with the Board, arguing that the restaurant and sales office, like the roads, ponds, green areas, etc., were common facilities, and thus not subject to separate assessment and taxation.2 The Board, however, denied the Association’s appeal.
The Association then appealed to the trial court, which held a hearing on August 28, 2001. During the hearing, Nicholas Mazzarella, the general manager of the Association, testified that although the Association owned the property on which the restaurant was located, it had leased that property to a private entity for the express purpose of operating a restaurant.3 Mr. Mazzarella explained that this arrangement was financially beneficial to the Association because it would lose money if it operated the restaurant on its own. Mr. Mazzarella further testified that although the restaurant was open to the public, it was considered a benefit to the residents of Saw Creek, as they were the primary patrons of the restaurant and received a 10% discount on their meals there. Moreover, Mr. Mazzarella stated that the rent that the restaurant operator paid to the Association went into a general fund to reduce the dues assessed against the Saw Creek homeowners for the common facilities.4
With regard to the sales office, Mr. Mazzarella testified that the Association leased the single-story building in which the sales office was located to a private real estate company, which used the building for the express and exclusive purpose of managing Saw Creek real estate transactions. Mr. Mazzarella *440further explained that the sales office, like the restaurant, was a benefit to Saw Creek homeowners because they could use the office to list their property for sale or rental.5
On November 15, 2001, the trial court entered an opinion and order affirming the Board’s assessment of the restaurant and sales office. Specifically, the court interpreted the law to state that a facility could not be a common facility if it was designated’ to be occupied by persons other than the planned community residents.6 Noting that here, the Association had leased the restaurant and sales office to private parties for their “exclusive” occupancy and use instead of maintaining the property for the unfettered occupancy and use of the Saw Creek residents, the court concluded that the restaurant and sales office could not be common facilities of Saw Creek, and thus were properly assessed and taxed by the Board.
The Association subsequently appealed to the Commonwealth Court, which reversed the trial court. See Saw Creek Estates Community Assoc., Inc. v. County of Pike, 808 A.2d 322 (Pa.Commw.2002). Unlike the trial court, the Commonwealth Court determined that the restaurant and sales office were clearly common facilities of Saw Creek, based on the plain and unambiguous definition of that term in section 5103. Turning to that statutory definition, the court explained that property qualifies as a common facility so long as it meets the following two requirements: (1) it is within the planned community; and (2) it is owned by or leased to the homeowners’ *441association.7 The court then concluded that because the restaurant and sales office met both of the above statutory requirements, they were undoubtedly common facilities and, as such, exempt from independent assessment and taxation pursuant to section 5105(b)(1) of the Act.
In their appeal to this Court, Appellants the County of Pike and the Board do not seem to contest the Commonwealth Court’s finding that the restaurant and sales office are common facilities, but rather appear to argue solely that the Commonwealth Court erred in determining that these properties are exempt from separate assessment and taxation as common facilities.8 Appellants assert that pursuant to section 5105(b) of the Act, common facilities may only be exempt from separate assessment and taxation to the extent that the planned community homeowners possess an “appurtenant interest” in those facilities, which, according to Appellants, means that the planned community homeowners must have the right to free and unfettered access to those facilities. Applying that premise here, Appellants contend that the restaurant and sales office cannot be exempt from separate assessment and taxation because they have been leased to private parties and, as a result, the planned community residents do not have the right to use these facilities in a free and unfettered manner. After considering Appellants’ argument, however, we cannot agree that the restaurant and sales office must be assessed and taxed under these circumstances.
On December 19, 1996, the General Assembly adopted the Act as a result of an increase in planned community developments in Pennsylvania.9 See e.g., Uniform Planned Communi*442ty Act, prefatory note, 7B U.L.A. (1980); Norman Geis, Codifying the Law of Homeowner Associations: The Uniform, Planned Community Act, 15 Real Prop., Prob. and Tr. J. 854, 854 (1980). Pursuant to the Act, a planned community is defined as:
[r]eal estate with respect to which a person, by virtue of ownership of an interest in any portion of the real estate, is or may become obligated by covenant, easement or agreement imposed on the owner’s interest to pay any amount for real property taxes, insurance, maintenance, repair, improvement, management, administration or regulation of any part of the real estate other than the portion or interest owned solely by the person.
68 Pa.C.S. § 5103. In simpler terms, a planned community is an area of land consisting of homes that are individually owned as well as common areas that are owned or leased by an association consisting of all of the homeowners in the community.10 See id. §§ 5103, 5205, 5301; Uniform Planned Community Act, prefatory note, 7B U.L.A. (1980); Geis, supra at 854, 856. Significantly, however, the planned community homeowners are responsible for paying dues or fees to the homeowners’ association for the common facilities. See 68 Pa.C.S. § 5103 (defining “common expense liability” as the “liability for common expenses allocated to each [home]”); id. § 5208 (explaining how the common expenses of the homeowners’ association are allocated among the homeowners in a planned community).
The Act refers to each individually owned home in the planned community as a “unit,” defining that term as “[a] physical portion of the planned community designated for *443separate ownership or occupancy, the boundaries of which are described [in the declaration creating the planned community].... ” 68 Pa.C.S. § 5103. In contrast, the Act refers to each common area in a planned community as a “common facility” and, as noted above, defines that term to include “[a]ny real estate within a planned community which is owned by the association or leased to the association.” Id. However, the definition also states that common facilities do not include units. See id. The Act further explains that “each unit, together with the interests, benefits and burdens [attached to that unit pursuant to the planned community declaration], including, without limitation, the right to any common facilities, constitutes a separate parcel of real estate.” Id. § 5105(a). Moreover, with regard to taxation, the Act declares that “each unit must be separately taxed and assessed [and the] value of a unit shall include the value of that unit’s appurtenant interest in the common facilities.” Id. § 5105(b). The Act then provides that “no separate assessed value shall be attributed to and no separate tax shall be imposed against common facilities....” Id. § 5105(b)(1).
As an initial matter, Appellants do not appear to contest, and we can independently find no error in, the Commonwealth Court’s finding that the restaurant and sales office constitute common facilities. Like the Commonwealth Court, we read section 5103 of the Act to clearly require that common facilities be: (1) located within the planned community; and (2) owned or leased by the planned community homeowners’ association. See id. § 5103. However, unlike the Commonwealth Court, we also find that section 5103 contains a clear third requirement that a common facility not be a unit, i.e., the property must not be designated for separate occupancy or ownership. See id.
Applying the above three requirements to the restaurant and sales office, we conclude that they both qualify as common facilities. As the Commonwealth Court found, the restaurant and sales office indisputably meet the first two requirements because they are located in the planned community and are owned by the Association. Moreover, we find that the restau*444rant and sales office also do not qualify as “units” because unlike the typical “unit” in a planned community, i.e., a home, the restaurant and sales office are simply not designated for separate occupancy or ownership. As the context of the Act makes clear and as Appellants even acknowledge in their brief, the term “separate ownership or occupancy” in the “unit” definition “denote[s] exclusivity of use” by the owner or lessee. Appellants’ Bf., at 14; see also 68 Pa.C.S. § 5105 (explaining that unit is a separate parcel of real estate for which unit owner is independently taxed); id. § 5202 (stating that any fixtures or improvements designated for a unit are allocated “exclusively” to that unit); id. § 5213 (explaining that a unit owner has the right to make any improvements or alterations to unit that do not impair the structural integrity of planned community). Under this construction, property is a unit, ie., designated for separate ownership or occupancy, only if the owner or lessee is entitled to use the property for himself and has no obligation to share the property with others. See Webster’s II New College Dictionary 1007 (1st ed.2001) (defining “exclusive” as something that is “not shared with others”). Here, the Association did not lease the restaurant or the sales office to the lessees for their exclusive use, but rather leased them to the lessees so that they could use the property for the benefit of the Saw Creek residents.11 Accordingly, these facilities cannot be classified as units and must instead be classified as common facilities. See 68 Pa. C.S. § 5103.
Having assured ourselves that the restaurant and sales office do indeed qualify as common facilities, we must next determine whether the Commonwealth Court properly found that all such common facilities are exempt from separate assessment and taxation pursuant to section 5105(b)(1) of the Act. While Appellants seem to argue otherwise, we find that *445the language of section 5105(b)(1) plainly and unambiguously states that all common facilities are, in fact, exempt from separate assessment and taxation. See 68 Pa.C.S. § 5105(b)(1) (“no separate assessed value shall be attributed to and no separate tax shall be imposed against common facilities”). Thus, because we must effectuate the General Assembly’s intent when interpreting statutes, and because the plain language in a statute is the best indicator of the General Assembly’s intent, see 1 Pa.C.S. § 1921, we hold that the General Assembly must have intended section 5105(b)(1) to mean just what it clearly says: common facilities may not be separately assessed and taxed.
In spite of the plain language of section 5105(b)(1), Appellants urge us to find that common facilities may be separately assessed and taxed under certain circumstances, namely, when the homeowners in a planned community do not have an appurtenant interest consisting of the right to use the facilities in a free and unfettered manner. In contending that such an exception exists, Appellants assert that section 5105(b)(1) only exempts common facilities from separate assessment and taxation because the individual homeowners in a planned community are already assessed and taxed for those facilities by means of their “appurtenant interest” in the facilities. See 68 Pa.C.S. § 5105(b) (“[Ejach unit must be separately taxed and assessed. The value of a unit shall include the value of that unit’s appurtenant interest in the common facilities.... ”). Arguing that individual homeowners only have an appurtenant interest in common facilities if they have the right to use the facilities in a free and unfettered manner, Appellants contend that there is no basis for exempting from separate assessment and taxation a common facility to which homeowners do not have free and unfettered access because the planned community homeowners will not be taxed for any appurtenant interest in that facility. Contrary to Appellants’ assertion, however, homeowners do not have an appurtenant interest in common facilities only if they have the right to free and unfettered access to those facilities; rather, the Act makes clear that regardless of the quality of access *446afforded to them, homeowners have an appurtenant interest in any facility that the planned community declaration designates as a “common facility,” at least in the absence of proof that they actually derive no value or benefit from that facility. See 68 Pa.C.S. § 5105 (“each unit that has been created, together with the interests, benefits and burdens created by the declaration, including, without limitation, the rights to any common facilities constitute a separate parcel of real estate”) (emphasis added); Id. § 5205 (explaining that planned community declaration must delineate between the units and the common facilities); Black’s Law Dictionary 98 (7th ed.1999) (defining “appurtenant” as describing something that is “[a]nnexed to a more important thing”). Moreover, as the facts of this very case make clear, facilities designated as common facilities are simply not only those to which homeowners have free and unfettered access.12 Accordingly, Appellants cannot rely on a contrary factual premise in asserting that certain common facilities are not exempt from separate assessment and taxation.
Thus, we conclude that the Commonwealth Court properly determined that the restaurant and sales office are common facilities and are thereby exempt from separate assessment and taxation pursuant to section 5105(b)(1) of the Act. Moreover, we hold that the Saw Creek homeowners retained appurtenant interests in the restaurant and sales office even though the association leased those facilities to private parties and did not keep them open for the homeowners’ free and unfettered use.
The Commonwealth Court’s order is affirmed.
Former Justice LAMB did not participate in the decision of this case. *447Justice CASTILLE files a dissenting opinion in which Justice NEWMAN joins. Justice NEWMAN files a dissenting opinion in which Justice CASTILLE joins.. Act of December 19, 1996, P.L. 1336, No. 180, § 1 (68 Pa.C.S. §§ 5101—5414).
. The Association paid the tax due on the restaurant and sales office under protest.
. Indeed, the lease agreement between the Association and the restaurant operator not only indicated that the restaurant operator had to operate a restaurant on the leased premises, but also specified the restaurant's operating hours and name.
. The lease agreement between the Association and the restaurant operator required the operator to pay the Association $1,000 a month to use the Association's property and to assume responsibility for all expenses affiliated with the restaurant. The agreement further stated that the restaurant operator was responsible for enforcing all of the policies, rules, and regulations concerning the use and operation of the restaurant, which were to be established by the Association.
. According to the lease agreement between the Association and the real estate company, the company was generally responsible for paying to the Association yearly rent in an amount equaling 10% of the gross commissions that the company received through transactions involving Saw Creek homes, which included any sales, rentals, or construction contracts. However, in no event was the real estate company to pay less than $24,000 or more than $50,000 annually. Moreover, the agreement made clear that the real estate company was responsible for managing the office and paying any expenses associated with the office.
. The court explained that the definition for common facilities indicated that such facilities could not include ‘‘units” and that units were defined by the Act as property designated for "separate occupancy.” See 68 Pa.C.S. § 5103. Accordingly, reading these two definitions together, the court concluded that common facilities could not include property designated for separate occupancy.
. The court noted that although the Board argued that real estate could not be a common facility if it was occupied by a private person or entity and not completely open to the planned community residents, such a requirement was not included in the statute, and it would not add such a requirement based on the "established statutory construction principle of expression unius est exclusion alterius, i.e., the express mention of a specific matter in a statute implies the exclusion of others not mentioned.” Saw Creek, 808 A.2d at 325.
. Notably, the Association also presented this argument to the Commonwealth Court, but that court did not resolve the issue in its opinion.
. The Act was modeled on the Uniform Planned Community Act, which was adopted by the National Conference of Commissioners on Uniform *442State Laws in 1980. See Unif. Planned Comm. Act §§ 1-101—5-110. Notably, Pennsylvania was the first jurisdiction to adopt a planned community act modeled on the Uniform Act. In 1999, North Carolina became the second and currently, the last jurisdiction to adopt an act modeled on the Uniform Planned Community Act. See N.C.G.S. §§ 47F-1-101—47F-3-120.
. Notably, the homes in the planned community do not need to be single family homes. Rather, they may be townhouses or apartments, and thus attached horizontally or vertically.
. As Mr. Mazzarella explained, the Association leased the restaurant to the restaurant operator specifically so that it could operate a restaurant on the premises for the benefit of the Saw Creek homeowners. Similarly, the Association leased the single-story building in which the sales office is located to a private real estate company for it to operate a sales office from which the Saw Creek homeowners could list their property for sale or rental.
. Indeed, it may be typical that certain common facilities, like roads and green areas, are kept open for the homeowners' free and unfettered use, but most other common facilities, like tennis courts, pools, clubhouses, and meeting rooms, are kept open only for the homeowners’ limited use.