[623]*623Justice Blackmun
delivered the opinion of the Court.
Appellant San Diego Gas & Electric Company, a California corporation, asks this Court to rule that a State must provide a monetary remedy to a landowner whose property allegedly has been “taken” by a regulatory ordinance claimed to violate the Just Compensation Clause of the Fifth Amendment.1 This question was left open last Term in Agins v. City of Tiburon, 447 U. S. 255, 263 (1980). Because we conclude that we lack jurisdiction in this case, we again must leave the issue undecided.
[624]*624I
Appellant owns a 412-acre parcel of land in Sorrento Valley, an area in the northwest part of the city of San Diego, Cal. It assembled and acquired the acreage in 1966, at a cost of about $1,770,000, as a possible site for a nuclear power plant to be constructed in the 1980’s. Approximately 214 acres of the parcel lie within or near an estuary known as the Los Penasquitos Lagoon.2 These acres are low-lying land which serves as a drainage basin for three river systems. About a third of the land is subject to tidal action from the nearby Pacific Ocean. The 214 acres are unimproved, except for sewer and utility lines.3
When appellant acquired the 214 acres, most of the land was zoned either for industrial use or in an agricultural “holding” category.4 The city’s master plan, adopted in 1967, designated nearly all the area for industrial use.
Several events that occurred in 1973 gave rise to this litigation. First, the San Diego City Council rezoned parts of the property. It changed 39 acres from industrial to agricultural, and increased the minimum lot size in some of the agricultural areas from 1 acre to 10 acres. The Council [625]*625recommended, however, that 50 acres of the agricultural land be considered for industrial development upon the submission of specific development plans.
Second, the city, pursuant to Cal. Gov’t Code Ann. § 65563 (West Supp. 1981), established an open-space plan. This statute required each California city and county to adopt a plan “for the comprehensive and long-range preservation and conservation of open-space land within its jurisdiction.” The plan adopted by the city of San Diego placed appellant’s property among the city’s open-space areas, which it defined as “any urban land of water surface that is essentially open or natural in character, and which has appreciable utility for park and recreation purposes, conservation of land, water or other natural resources or historic or scenic purposes.” App. 159. The plan acknowledged appellant’s intention to construct a nuclear power plant on the property, stating that such a plant would not necessarily be incompatible with the open-space designation.5 The plan proposed, however, that the city acquire the property to preserve it as parkland.
Third, the City Council proposed a bond issue in order to obtain funds to acquire open-space lands. The Council identified appellant’s land as among those properties to be acquired with the proceeds of the bond issue. The proposition, however, failed to win the voters’ approval. The open-space plan has remained in effect, but the city has made no attempt to acquire appellant’s property.
On August 15, 1974, appellant instituted this action in the Superior Court for the County of San Diego against the city and a number of its officials. It alleged that the city had [626]*626taken its property without just compensation, in violation of the Constitutions of the United States and California. Appellant’s theory was that the city had deprived it of the entire beneficial use of the property through the rezoning and the adoption of the open-space plan. It alleged that the city followed a policy of refusing to approve any development that was inconsistent with the plan, and that the only beneficial use of the property was as an industrial park, a use that would be inconsistent with the open-space designation.6 The city disputed this allegation, arguing that appellant had never asked its approval for any development plan for the property. It also contended that, as a charter city, it was not bound by the open-space plan, even if appellant’s proposed development would be inconsistent with the plan, citing Cal. Gov’t Code Ann. §§ 65700, 65803 (West 1966 and Supp. 1981).
Appellant sought damages of $6,150,000 in inverse condemnation, as well as mandamus and declaratory relief. Prior to trial, the court dismissed the mandamus claim, holding that “mandamus is not the proper remedy to challenge the validity of a legislative act.” , Clerk’s Tr. 42. After a nonjury trial on the issue of liability, the court granted judgment for appellant, finding that:
“29. [Due to the] continuing course of conduct of the defendant City culminating in June of 1973, and, in particular, the designation of substantially all of the subject property as open space . . . , plaintiff has been deprived of all practical,, beneficial or economic use of the property designated as open space, and has further suffered severance damage with respect to the balance of the subject property.
[627]*627“30. No development could proceed on the property-designated as open space unless it was consistent with open space. In light of the particular characteristics of the said property, there exists no practical, beneficial or economic use of the said property designated as open space which is consistent with open space.
“31. Since June 19, 1973, the property designated as open space has been devoted to use by the public as open space.
“32. Following the actions of the defendant City in June of 1973, it would have been totally impractical and futile for plaintiff to have applied to defendant City for the approval of any development of the property designated as open space or the remainder of the subject property.
“33. Since the actions of the defendant City in June of 1973, the property designated as open space and the remainder of the larger parcel is unmarketable in that no other person would be willing to purchase the property, and the property has at most a nominal fair market value.” App. 41-42.
The court concluded that these findings established that the city had taken the property and that just compensation was required by the Constitutions of both the United States and California. A subsequent jury trial on the question of damages resulted in a judgment for appellant for over $3 million.
On appeal, the California Court of Appeal, Fourth District, affirmed. App. to Juris. Statement B-l; see 146 Cal. Rptr. 103 (1978). It held that neither a change in zoning nor the adoption of an open-space plan automatically entitled a property owner to compensation for any resulting diminution in the value of the property. In this case, however, the record revealed that the city followed the policy of enacting and enforcing zoning ordinances that were consistent with its [628]*628open-space plan.
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[623]*623Justice Blackmun
delivered the opinion of the Court.
Appellant San Diego Gas & Electric Company, a California corporation, asks this Court to rule that a State must provide a monetary remedy to a landowner whose property allegedly has been “taken” by a regulatory ordinance claimed to violate the Just Compensation Clause of the Fifth Amendment.1 This question was left open last Term in Agins v. City of Tiburon, 447 U. S. 255, 263 (1980). Because we conclude that we lack jurisdiction in this case, we again must leave the issue undecided.
[624]*624I
Appellant owns a 412-acre parcel of land in Sorrento Valley, an area in the northwest part of the city of San Diego, Cal. It assembled and acquired the acreage in 1966, at a cost of about $1,770,000, as a possible site for a nuclear power plant to be constructed in the 1980’s. Approximately 214 acres of the parcel lie within or near an estuary known as the Los Penasquitos Lagoon.2 These acres are low-lying land which serves as a drainage basin for three river systems. About a third of the land is subject to tidal action from the nearby Pacific Ocean. The 214 acres are unimproved, except for sewer and utility lines.3
When appellant acquired the 214 acres, most of the land was zoned either for industrial use or in an agricultural “holding” category.4 The city’s master plan, adopted in 1967, designated nearly all the area for industrial use.
Several events that occurred in 1973 gave rise to this litigation. First, the San Diego City Council rezoned parts of the property. It changed 39 acres from industrial to agricultural, and increased the minimum lot size in some of the agricultural areas from 1 acre to 10 acres. The Council [625]*625recommended, however, that 50 acres of the agricultural land be considered for industrial development upon the submission of specific development plans.
Second, the city, pursuant to Cal. Gov’t Code Ann. § 65563 (West Supp. 1981), established an open-space plan. This statute required each California city and county to adopt a plan “for the comprehensive and long-range preservation and conservation of open-space land within its jurisdiction.” The plan adopted by the city of San Diego placed appellant’s property among the city’s open-space areas, which it defined as “any urban land of water surface that is essentially open or natural in character, and which has appreciable utility for park and recreation purposes, conservation of land, water or other natural resources or historic or scenic purposes.” App. 159. The plan acknowledged appellant’s intention to construct a nuclear power plant on the property, stating that such a plant would not necessarily be incompatible with the open-space designation.5 The plan proposed, however, that the city acquire the property to preserve it as parkland.
Third, the City Council proposed a bond issue in order to obtain funds to acquire open-space lands. The Council identified appellant’s land as among those properties to be acquired with the proceeds of the bond issue. The proposition, however, failed to win the voters’ approval. The open-space plan has remained in effect, but the city has made no attempt to acquire appellant’s property.
On August 15, 1974, appellant instituted this action in the Superior Court for the County of San Diego against the city and a number of its officials. It alleged that the city had [626]*626taken its property without just compensation, in violation of the Constitutions of the United States and California. Appellant’s theory was that the city had deprived it of the entire beneficial use of the property through the rezoning and the adoption of the open-space plan. It alleged that the city followed a policy of refusing to approve any development that was inconsistent with the plan, and that the only beneficial use of the property was as an industrial park, a use that would be inconsistent with the open-space designation.6 The city disputed this allegation, arguing that appellant had never asked its approval for any development plan for the property. It also contended that, as a charter city, it was not bound by the open-space plan, even if appellant’s proposed development would be inconsistent with the plan, citing Cal. Gov’t Code Ann. §§ 65700, 65803 (West 1966 and Supp. 1981).
Appellant sought damages of $6,150,000 in inverse condemnation, as well as mandamus and declaratory relief. Prior to trial, the court dismissed the mandamus claim, holding that “mandamus is not the proper remedy to challenge the validity of a legislative act.” , Clerk’s Tr. 42. After a nonjury trial on the issue of liability, the court granted judgment for appellant, finding that:
“29. [Due to the] continuing course of conduct of the defendant City culminating in June of 1973, and, in particular, the designation of substantially all of the subject property as open space . . . , plaintiff has been deprived of all practical,, beneficial or economic use of the property designated as open space, and has further suffered severance damage with respect to the balance of the subject property.
[627]*627“30. No development could proceed on the property-designated as open space unless it was consistent with open space. In light of the particular characteristics of the said property, there exists no practical, beneficial or economic use of the said property designated as open space which is consistent with open space.
“31. Since June 19, 1973, the property designated as open space has been devoted to use by the public as open space.
“32. Following the actions of the defendant City in June of 1973, it would have been totally impractical and futile for plaintiff to have applied to defendant City for the approval of any development of the property designated as open space or the remainder of the subject property.
“33. Since the actions of the defendant City in June of 1973, the property designated as open space and the remainder of the larger parcel is unmarketable in that no other person would be willing to purchase the property, and the property has at most a nominal fair market value.” App. 41-42.
The court concluded that these findings established that the city had taken the property and that just compensation was required by the Constitutions of both the United States and California. A subsequent jury trial on the question of damages resulted in a judgment for appellant for over $3 million.
On appeal, the California Court of Appeal, Fourth District, affirmed. App. to Juris. Statement B-l; see 146 Cal. Rptr. 103 (1978). It held that neither a change in zoning nor the adoption of an open-space plan automatically entitled a property owner to compensation for any resulting diminution in the value of the property. In this case, however, the record revealed that the city followed the policy of enacting and enforcing zoning ordinances that were consistent with its [628]*628open-space plan. The Court of Appeal also found that the evidence supported the conclusion that industrial use was the only feasible use for the property and that the city would have denied any application for industrial development because it would be incompatible with the open-space designation. Appellant’s failure to present a plan for developing the property therefore did not preclude an award of damages in its favor. The Court of Appeal, with one judge dissenting, denied the city’s petition for rehearing. See 146 Cal. Rptr., at 118.
The Supreme Court of California, however, on July 13, 1978, granted the city’s petition for a hearing. This action automatically vacated the Court of Appeal’s decision, depriving it of all effect. Knouse v. Nimocks, 8 Cal. 2d 482, 483-484, 66 P. 2d 438 (1937). See also Cal. Rules of Court 976 (d) and 977 (West 1981). Before the hearing, the Supreme Court in June 1979 retransferred the case to the Court of Appeal for reconsideration in light of the intervening decision in Agins v. City of Tiburon, 24 Cal. 3d 266, 598 P. 2d 25 (1979), aff’d, 447 U. S. 255 (1980).7 The California court in Agins held that an owner who is deprived of substantially all beneficial use of his land by a zoning regulation is not entitled to an award of damages in an inverse condemnation proceeding. Rather, his exclusive remedy is invalidation of the regulation in an action for mandamus or declaratory relief.8 Agins also [629]*629held that the plaintiffs in that case were not entitled to such relief because the zoning ordinance at issue permitted the building of up to five residences on their property. Therefore, the court held, it did not deprive those plaintiffs of substantially all reasonable use of their land.9
When the present case was retransferred, the Court of Appeal, in an unpublished opinion, reversed the judgment of the Superior Court. App. 63. It relied upon the California decision in Agins and held that appellant could not recover compensation through inverse condemnation. It, however, [630]*630did not invalidate either the zoning ordinance or the open-space plan. Instead, it held that factual disputes precluded such relief on the present state of the record:
“[Appellant] complains it has been denied all use of its land which is zoned for agriculture and manufacturing but lies within the open space area of the general plan. It has not made application to use or improve the property nor has it asked [the] City what development might be permitted. Even assuming no use is acceptable to the City, [appellant’s] complaint deals with the alleged overzealous use of the. police power by [the] City. Its remedy is mandamus or declaratory relief, not inverse condemnation. [Appellant] did in its complaint seek these remedies asserting that [the] City had arbitrarily exercised its police power by enacting an unconstitutional zoning law and general plan element or by applying the zoning and general plan unconstitutionally. However, on the present record these are disputed fact issues not covered by the trial court in its findings and conclusions. They can be dealt with anew should [appellant] elect to retry the case.” App. 66.
The Supreme Court of California denied further review. App. to Juris. Statement 1-1. Appellant appealed to this Court, arguing that the Fifth and Fourteenth Amendments require that compensation be paid whenever private property is taken for public use. Appellant takes issue with the California Supreme Court’s holding in Agins that its remedy is limited to invalidation of the ordinance in a proceeding for mandamus or declaratory relief. We postponed consideration of our jurisdiction until the hearing on the merits. 447 U. S. 919 (1980). We now conclude that the appeal must be dismissed because of the absence of a final judgment.10
[631]*631II
In Agins, the California Supreme Court held that mandamus or declaratory relief is available whenever a zoning regulation is claimed to effect an uncompensated taking in violation of the Fifth and Fourteenth Amendments. The Court of Appeal’s failure, therefore, to award such relief in this case clearly indicates its conclusion that the record does not support appellant’s claim that an uncompensated taking has occurred.11 Because the court found that the record presented “disputed fact issues not covered by the trial court in its findings and conclusions,” App. 66,12 it held that manda-[632]*632mua and declaratory relief would be available “should [appellant] elect to retry the case.” Ibid. While this phrase appears to us to be somewhat ambiguous, we read it as meaning that appellant is to have an opportunity on remand to convince the trial court to resolve the disputed issues in its favor. We do not believe that the Court of Appeal was holding that judgment must be entered for the city. It certainly did not so direct.- This indicates that appellant is free to pursue its quest for relief in the Superior Court. The logical course of action for an appellate court that finds unresolved factual disputes in the record is to remand the case for the resolution of those disputes. We therefore conclude that the Court of Appeal’s decision contemplates further proceedings in the trial court.13
^
Ever since this Court’s decision in Grays Harbor Co. v. Coats-Fordney Co., 243 U. S. 251 (1917), a state court’s [633]*633holding that prívate property has been taken in violation of the Fifth and Fourteenth Amendments and that further proceedings are necessary to determine the compensation that must be paid has been regarded as a classic example of a decision not reviewable in this Court because it is not “final.” In such a case, “the remaining litigation may raise other federal questions that may later come here.” Radio Station WOW, Inc. v. Johnson, 326 U. S. 120, 127 (1945). This is because “the federal constitutional question embraces not only a taking, but a taking on payment of just compensation. A state judgment is not final unless it covers both aspects of that integral problem.” North Dakota Board of Pharmacy v. Snyder’s Drug Stores, Inc., 414 U. S. 156, 163 (1973).
This case presents the reverse aspect of that situation. The Court of Appeal has decided that monetary compensation is not an appropriate remedy for any taking of appellant’s property that may have occurred, but it has not decided whether any other remedy is available because it has not decided whether any taking in fact has occurred. Thus, however we might rule with respect to the Court of Appeal’s decision that appellant is not entitled to a monetary remedy— and we are frank to say that the federal constitutional aspects of that issue are not to be cast aside lightly — further proceedings are necessary to resolve the federal question whether there has been a taking at all. The court’s decision, therefore, is not final, and we are without jurisdiction to review it.
Because § 1257 permits us to review only “[fjinal judgments or decrees” of a state court, the appeal must be, and is, dismissed-
It is so ordered.