OPINION OF THE COURT
ZAPPALA, Justice.H.R. Miller Company, Inc., challenged the Lancaster Township zoning ordinance, claiming that it excluded a legitimate commercial use, i.e., quarrying. In conjunction *480with its challenge, the Company submitted a proposed curative amendment, suggesting that the deficiency be corrected by amending the zoning map to include a Mineral Recovery District encompassing land owned by the Company. The township board of supervisors dismissed the Company’s challenge and denied its request for curative amendment, but on appeal, the court of common pleas accepted the Company’s argument that the ordinance operated as a de facto exclusion of quarries. Notwithstanding this finding, the court did not grant the Company “site-specific relief” as to any aspect of its proposed use. The court limited its remedy to a declaration that certain setback requirements contained in the ordinance, which had the effect of limiting the area where quarrying was a permitted use, be stricken. Commonwealth Court affirmed. We granted allowance of appeal to review the Company’s claim that the court, having found the ordinance to be exclusionary, was required to grant site-specific relief or, at the least, to order the plan approved in some part and refer other elements of the Company’s plan to the governing body for further proceedings.
H.R. Miller Company, Inc., operates a limestone quarry on twenty-nine acres of land in the southwest portion of Lancaster Township. The quarry has existed since approximately 1890. When the township enacted its first zoning ordinance in 1940, the area where the quarry is located was zoned as “agricultural”. The following year, the Company’s predecessor in title was successful in petitioning the Township to rezone the land “industrial”. The Company acquired the quarry sometime before 1960. In that year, the Township revised its zoning ordinance and the area was rezoned “residential”. It remained so classified when the ordinance was again revised in 1972. The Company’s operation thus continues as a pre-existing non-conforming use. The Company has also purchased several tracts of adjacent property in the residential district, currently owning a total of one hundred seventeen acres.
*481When the Company filed its challenge to the zoning ordinance in 1986, the ordinance permitted quarry operations as a special exception in the Township’s “industrial” districts. The challenge, therefore, was not a claim of de jure exclusion of a legitimate use. Rather, the Company argued that quarrying had been excluded de facto because several factors — the limited size of the industrial districts, the requirement that any quarry pit be set back 500 feet from property lines and street rights-of-way, and the existing land uses — combined to make such operations physically impossible or economically unfeasible.
In hearings before the Township’s Board of Supervisors, the Company presented evidence of the dimensions of the largest quarry pit that could be located in the largest industrial district. It also presented economic evidence of the cost of acquiring the various parcels of land in the district and other production costs, along with testimony of company officials that given these costs a quarry of such size would not yield enough stone to make it profitable. The Township presented different estimates of the sizes and configurations of quarry pits that could be located in the industrial zone. It also challenged the accuracy and the significance of the Company’s economic evidence in cross-examining the Company’s witnesses, but did not introduce its own evidence on these points.
The Supervisors rejected the Company’s economic evidence as unsubstantiated and self-serving. The Supervisors also interpreted the ordinance’s buffer zone requirements such that the land dedicated to the 500 foot setback need not be within the industrial district, thus making a substantially greater area available within the industrial zone to place a quarry pit. According to this interpretation, the Supervisors determined that sufficient stone reserves would be available to surpass the “break-even point” even according to the Company’s estimates, and thus that operation of a quarry was both geographically and financially feasible.
The Court of Common Pleas held that the Supervisors’ rejection of the Company’s economic evidence constituted a *482manifest abuse of discretion and found that the Company had partially carried its burden of showing de facto exclusion. The court also found that the difficulty of acquiring the parcels that were already in use for residential and industrial purposes at the time the area was designated an industrial district, would present an obstacle to any attempt to locate a quarry there. The combination of these factors led the court “to hold that [the Supervisors] lacked substantial evidence to conclude that quarries are not excluded.” Opinion at 10.
The court further determined that the Supervisors committed an error of law in ruling that land outside the industrial zone could be committed to use as a buffer area for a quarry located in the industrial zone. Finding that a five hundred foot setback requirement was, in the language of the statute, “not reasonably related to the municipality’s authority to determine its physical growth pattern, protect the Commonwealth’s public natural resources, coordinate development with the provision of public services, or protect the character of the community,” the court held “that Section 1302(2)(c) [the setback provision] acts as an unconstitutional de facto exclusion of quarries from the Township.” Opinion at 12.
The next part of the court’s opinion was devoted to a determination of whether to grant the site-specific relief requested by the Company. Citing Fernley v. Board of Supervisors of Schuylkill Township, 509 Pa. 413, 425, 502 A.2d 585, 591 (1985), the court stated that site-specific relief was not automatic, but could be rejected if the Supervisors could show that the plan was incompatible with the proposed site. The court examined the five factors then found in Section 1011(2) of the Municipalities Planning Code.1 *483Although it found “no evidence that the proposed quarry expansion would adversely affect the environment in any material way,” the court concluded “that the comprehensive and progressive residential character of the southwestern portion of the Township outweighs any environmental considerations, especially in light of the fact that the Conestoga Limestone Formation underlies the industrially zoned districts as well.” Opinion at 15. For this reason, the court held the Company’s site unsuitable for quarry operations and denied site-specific relief. The court went on to state that “[a]s only the five hundred foot setback limitation has been brought to issue and addressed by this Court, it would be erroneous to declare the entire Ordinance invalid where a severability provision exists.”2 Accordingly, the court held that Section 1302(2)(c) was to be stricken from the ordi*484nance, leaving in its place the minimum setbacks required by state regulations.
The Company argues that the lower courts erred in interpreting Section 1011(2) and Femley as permitting the total denial of site-specific relief. According to this argument, the court must “order the described development approved as to all elements or ... order it approved as to some elements and refer other elements ... for further proceedings,” but may not entirely withhold approval of the development.
Historically, the rationale for allowing a landowner to proceed with a proposed development upon successfully challenging an ordinance as exclusionary has been that “[o]nce a zoning ordinance is found to be constitutionally defective, the judgment invalidates the entire ordinance,” Casey v. Zoning Hearing Board of Warwick Township, 459 Pa. 219, 229, 328 A.2d 464, 468 (1974). In the absence of a valid zoning ordinance, a property owner is free to use his property as he wishes.
In Casey, we recognized that the legislature had attempted to avoid the potential for chaos that could follow the invalidation of a municipality’s zoning ordinance, by authorizing the court to “stay the effect of its judgment for a limited time to give the local governing body an opportunity to modify or amend the ordinance in accordance with the opinion of the court.” Act of July 31,1968, P.L. 805, § 1009 (repealed). We held, however, that under this provision, the municipality could not be permitted to modify or amend its ordinance in such a way that the defect was cured but the landowner who had raised the challenge obtained no relief. We decided, in effect, that the judgment could not be “purely prospective”, but had to apply at least to the party who had successfully litigated the matter of the invalidity of the ordinance. At the same time, we recognized that there might be “other sources of control” beside the invalidated zoning designation (e.g., subdivision ordinances, building codes) that could still be legitimately applied to the proposed use.
*485Where the cause of an ordinance’s invalidity is a de jure exclusion of a legitimate use, as in Casey, application of these principles is a relatively straightforward task. Since the illegality lies in the total exclusion of a legitimate use, the sole remedy is to allow the use somewhere in the municipality, and equity dictates that this opportunity fall to the successful litigant/landowner.
Where the exclusion is de facto, however, the analysis is more complicated. The ordinance on its face permits the proposed use, but under such conditions that the use cannot in fact be accomplished. In such a case, it may be possible to cure the unlawful exclusion without invalidating the ordinance. By applying the rule of severability3, the restrictive conditions may be eliminated without affecting the remainder of the ordinance. As a result, the use is allowed according to the explicit terms of the ordinance that remain.
It must be emphasized that the focus of the inquiry in all cases is the constitutionality of the ordinance, whether the ordinance is a proper exercise of the police power, and not whether the landowner “deserves” to be able to make a particular use of his property. If the ordinance can be “saved” from unconstitutionality by severance of an offending provision, if the ordinance as severed is constitutional, the landowner/litigant is not entitled to proceed with his *486proposal as a reward for having pursued the litigation. To the extent that his “success” in the litigation was limited, his relief is limited as well; he will have the opportunity to acquire and develop property in the zone where the use is permitted.
Unfortunately, the common pleas court’s opinion in this case confused the matter by first addressing the statutory factors regarding site-specific relief and then applying the severability provision of the ordinance.4 Because the purpose of the severability provision is to salvage, if possible, the remainder of the ordinance if any part of it is declared invalid, such analysis must be undertaken first. For if the ordinance minus the severed offending provision passes muster as a reasonable exercise of the police power, there is no cause to grant further relief, site-specific or otherwise; the ordinance is no longer de facto exclusionary.5
In the case at bar, after the 500-foot setback provision is severed, the ordinance on its face permits quarrying in the industrial zones and the only limitation on area derives from *487state regulations. Despite the confusion of the common pleas court’s analysis, implicit in the court’s opinion is an understanding that it is geographically and economically feasible to locate a quarry in the industrial district if the five hundred foot setback provision is eliminated. [“Therefore, we hold that Section 1302(2)(c) acts as an unconstitutional exclusion of quarries from the Township.” Opinion at 12. (Emphasis added.) The court also observed, in weighing the environmental considerations, “that the Conestoga Limestone Formation underlies the industrially zoned districts as well,” Opinion at 15. This observation only makes sense if the court believed that absent the setback requirements a quarry could in fact be located in the industrial zone(s).] Since the ordinance in this form is not exclusionary, there is no basis for ordering the site-specific relief sought by the Company. For these reasons, the court's order was appropriate and was properly affirmed by the Commonwealth Court, whose order we likewise affirm.
PAPADAKOS, J., concurs in the result. LARSEN, J., files a dissenting opinion.. Section 1011(2) provided that:
If the court in accordance with the standards provided in subsection (1), finds that an ordinance or map or a decision or order thereunder which has been brought up for review unlawfully prevents or restricts a development or use which has been described by the landowner through plans and other materials submitted to the governing body, agency or officer of the municipality whose action *483or failure to act is in question on the appeal, it may order the described development or use approved as to all elements or it may order it approved as to some elements and refer other elements to the governing body, agency or officer having jurisdiction thereof for further proceedings, including the adoption of alternative restrictions, in accordance with the court’s opinion and order. In issuing its order, the court shall consider the following: (i) the locational suitability of the site for the uses proposed including the general location of the site with regard to major roads, sewer facilities, water supplies, schools and other public service facilities or the comprehensive plan and zoning ordinance of the municipality and the county if they exist; (ii) the impact of the proposal on regional housing needs, the transportation network, and the other public services and facilities; (iii) the suitability of the site for the intention of use proposed by the site’s soils, slopes, woodland, wetlands, flood plains, aquifers, natural resources and other natural features; (iv) the impact of the proposed use on the site’s soils, slopes, woodland, wetlands, flood plains, aquifers, natural resources and other natural features, the degree to which these are protected or destroyed, the tolerance of the resources to development and any adverse environmental impacts; and (v) the impact of the proposal on the preservation of agriculture and other land uses which are essential to the public health and welfare.
. Justice Larsen describes this determination as "erroneous” and cites to Miller’s original Challenge to Validity of Ordinance and Request for Adoption of Curative Amendment. See Dissenting Opinion at 326, fn. 1. When the matter came before the Court of Common Pleas, however, Miller apparently presented no argument to the court beyond the assertion that the setback requirement operated as a de facto exclusion. See Opinion at 489-490, fn. 2.
. Article XXI of the Lancaster Township Zoning Ordinance provides that
If any article, section, sub-section, provision, limitation, restriction, sentence, clause, phrase, or word in the Zoning Ordinance is declared for any reason to be illegal, unconstitutional or invalid by any Court of competent jurisdiction, such decision shall not affect or impair the validity of the Zoning Ordinance as a whole, or any other article, section, sub-section, provision, regulation, limitation, restriction, sentence, clause, phrase, word or remaining portion of the Zoning Ordinance. The Board of Township Supervisors hereby declares that it would have adopted the Zoning Ordinance and each article, section, subsection, provision, regulation, limitation, restriction, sentence, clause, phrase and word thereof, irrespective of the fact that any one or more of the articles, sections, sub-sections, provisions, regulations, limitations, restrictions, sentences, clauses, phrases or words may be declared illegal, unconstitutional or invalid.
See also 1 Pa.C.S. § 1925.
. The court cited to Greenwood Township v. KEFO, Inc., 52 Pa. Commw. 367, 416 A.2d 583 (1980), in support of its decision to apply the severability provision rather than declare the entire ordinance invalid. In that case, the common pleas court invalidated a zoning ordinance after finding that certain distance requirements in the ordinance a de facto exclusion of landfill operations from the township. Commonwealth Court affirmed the determination that the distance requirements were invalid, but held that the court erred in declaring the entire ordinance invalid in light of the severability provision of the ordinance and 1 Pa.C.S. § 1925. It is recognized that KEFO was a declaratory judgment action where the landowners simply sought a declaration that the challenged restrictions were invalid, and not an appeal of a decision under the Municipalities Planning Code. Nevertheless, we find this distinction of no consequence. As the Commonwealth Court noted in KEFO, "[tjhe possible severability of provisions of the ordinance is always germane. -..." 52 Pa.Commw. at 374, 416 A.2d at 586.
. Of course, if the defect asserted cannot be cured by severing provisions of the ordinance, the case stands in the same posture as one involving a de jure exclusion. The sole remedy is to allow the use somewhere, and under Casey and Section 1006-A(c) of the Municipalities Planning Code, added by the Act of Dec. 21, 1988, P.L. 1329, No. 170, § 101, effective Feb. 20, 1989, 53 P.S. § 11006-A, the successful litigant must receive that benefit in the form of at least partial approval of the proposal.