
    SFW ARECIBO, LTD. and FW Associates, Ltd., Plaintiffs, Appellants, v. Angel D. RODRÍGUEZ; Wanda Capó; Wanda Marrero; Frederick Muhlach, in his personal and official capacity as a member of the Planning Board of Puerto Rico; Fernando Félix, in his personal and official capacity as a member of the Planning Board of Puerto Rico; and Nelson Vélez, in his personal and official capacity as a member of the Planning Board of Puerto Rico, Defendants, Appellees.
    No. 04-2587.
    United States Court of Appeals, First Circuit.
    Heard May 3, 2005.
    Decided July 14, 2005.
    
      Rubén T. Nigaglioni, with whom Niga-glioni & Ferraiuoli Law Offices, PSC was on brief, for appellants.
    Irene S. Soroeta-Kodesh, Assistant Solicitor General, with whom Salvador J. An-tonetti Stutts, Solicitor General,' and Mariana D. Negron Vargas, Deputy Solicitor General, were on brief, for appellees.
    Before BOUDIN, Chief Judge, LYNCH and LIPEZ, Circuit Judges.
   LIPEZ, Circuit Judge.

This appeal arose from a dispute over a land use permit for the development of a shopping center in Arecibo, Puerto Rico. Two real estate developers sued members of the Puerto Rico Planning Board in the United States District Court for the District of Puerto Rico pursuant to 42 U.S.C. § 1983, alleging that the Planning Board, which reviews proposed development projects throughout the Commonwealth, violated various provisions of the United State Constitution when it erroneously determined that the developers’ land use permit had expired without the commencement of “actual and effective construction.” The district court dismissed the complaint pursuant to Fed.R.Civ.P. 12(b)(6) for failure to state a claim. The developers filed a timely appeal. Seeing “nothing in the present case to distinguish it sufficiently from the usual land developer’s claim under state law to warrant recognition of a federal constitutional question,” Creative Env’ts, Inc. v. Estabrook, 680 F.2d 822, 833 (1st Cir.1982), we affirm.

I.

The appellants, real estate developers SFW Arecibo Ltd. Partnership and FW Associates Ltd. Partnership (“Developers”), are constructing a shopping center in Arecibo, Puerto Rico. The Planning Board approved a preliminary development plan for the project on August 26, 1996, and issued a land use permit that required the Developers to begin actual and effective construction by December 16, 1998. Once the permit was issued, the Developers had. to apply to the Puerto Rico Permits and Regulations Administration (“ARPE”) for specific construction permits.

-On November 16, 1998, the Developers requested that the Planning Board extend the deadline by which actual and effective construction had to begin. The request was denied on December 9, 1998. Nevertheless, the Developers obtained the relevant permits from the ARPE and began to excavate and lay foundations before the December 16,1998 deadline for commencement of actual and effective construction. The ARPE agreed that the Developers had met the deadline and continued to issue permits for the project.

On January 27, 2003, the Developers requested that the Planning Board clarify whether the original land use permit would allow for the building of a Home Depot store in the shopping center. The Planning Board denied the request for clarification on February - 21, 2003, explaining that the land use permit had expired on December 16,1998 because the Developers had not commenced actual and effective construction by that deadline. The Planning Board also informed the ARPE that the underlying land -use permit had expired, and thus that it could no longer issue construction permits for the Developers’ project.

On July 3, 2003, the Developers appealed to the Puerto Rico Court of Appeals for administrative review of the Planning Board’s decision. The Puerto Rico appellate court sided with the Developers, ruling on August 25, 2004 that the Planning Board’s decision was erroneous and that the Board’s actions violated the Developers’ ownership rights as set forth in the Puerto Rico Constitution. FW Assocs. v. Junta De Planificación, No. KLRA-03-00476, 2004 WL 2480859 (P.R. Ct.App. Aug. 25, 2004). The Puerto Rico appellate court’s decision is currently pending before the Puerto Rico Supreme Court.

Not content to limit their claims to the courts of Puerto Rico, the Developers also filed a § 1983 action against members of the Planning Board in federal district court on’ September 5, 2003.’ In their federal complaint, the Developers alleged that the Planning Board’s erroneous revocation of the land use permit violated their rights under the Takings, Due Process, and Equal Protection Clauses of the federal Constitution. The Planning Board, responded by filing a motion to dismiss the complaint for failure to state a claim. See Fed.R.Civ.P. 12(b)(6).

The Developers failed to reply to the 12(b)(6) motion within the time allotted. Several days after the deadline had passed, the Developers requested an extension of time to file their opposition. On January 12, 2004, the district court denied the request for an extension .and deemed the motion to dismiss unopposed. The district court subsequently issued an opinion and order dismissing the case pursuant to Rule 12(b)(6). The court’s ruling rested solely on our precedent in PFZ Properties, Inc. v. Rodriguez, 928 F.2d 28 (1st Cir.1991), because that case, in the court’s view, “resolved a controversy nearly identical to the one present in the instant case.” SFW Arecibo, Ltd. v. Rodriguez, No. 03-1970 (D.P.R. Sept. 22, 2004).

II.

We review a district court’s grant of a motion to dismiss de novo. Greene v. Rhode Island, 398 F.3d 45, 48 (1st Cir.2005). In so doing, we accept as true the well-pleaded factual allegations of the complaint, drawing all reasonable inferences in the non-movants’ favor. Id.

A. Takings Claim

The Developers assert that the Planning Board’s erroneous determination that their permit expired without the commencement of actual and effective construction amounted to a taking of private property without just compensation, thereby violating the Fifth and Fourteenth Amendments to the United States Constitution. This claim is premature. It is well-settled that “if a State provides an adequate procedure for seeking just compensation, the property owner cannot claim a violation of the Just Compensation Clause until it has used the procedure and been denied just compensation.” Williamson Cty. Reg’l Planning Comm’n v. Hamilton Bank of Johnson City, 473 U.S. 172, 195, 105 S.Ct. 3108, 87 L.Ed.2d 126 (1985). Adequate procedures for seeking just compensation are available under Puerto Rico law. See Deniz v. Mun. of Guaynabo, 285 F.3d 142, 146-47 (1st Cir.2002) (concluding that Puerto Rico case law recognizes an inverse condemnation remedy by which property owners can seek just compensation). Because the Developers have not sought just compensation through those state law procedures, their complaint does not state a valid federal takings claim. See id. at 149 (“A plaintiffs failure to exhaust the inverse condemnation remedy renders premature a section 1983 damages action predicated upon an alleged takings violation.”).

B. Procedural Due Process Claim

To establish a procedural due process claim under § 1983, a plaintiff “must allege first that it has a property interest as defined by state law and, second, that the defendants, acting under col- or of state law, deprived it of that property interest without constitutionally adequate process.” PFZ Prop., 928 F.2d at 30. Here, the Developers assert that the Planning Board violated their procedural due process rights when it determined that the land use permit had expired and revoked it without notice or a hearing. That assertion is misguided. If the Developers have a property interest in the land use permit (we assume arguendo that they do), the post-deprivation process available to them under Puerto Rico law is a constitutionally adequate protection for that interest.

The Developers do not challenge the adequacy of the permitting procedures established by Puerto Rico law. Instead, they allege that the Planning Board illegally revoked their land use permit without jurisdiction to do so. We rejected an analogous due process claim in PFZ Properties, explaining that in this context, our focus is on the availability of post-deprivation, rather than pre-deprivation, process:

When a deprivation of property results from conduct of state officials violative of state law, the Supreme Court has held that failure to provide pre-deprivation process does not violate the Equal Protection Clause.... The state is not required to anticipate such violations of its own constitutionally adequate procedures. To hold otherwise would convert every departure from established administrative procedures into a violation of the Fourteenth Amendment, cognizable under § 1983.... [T]he only question is whether the post-deprivation process available to [the plaintiff] is adequate.

Id. at 31 (internal citations omitted). We went on to hold that “the combination of administrative and judicial remedies provided by Puerto Rico law is sufficient to meet the requirements of due process.” Id.

The post-deprivation process that we found adequate in PFZ Properties included the right to petition the administrative agency for reconsideration and to seek judicial review in the courts of Puerto Rico. Id. The same procedures for review were available in this case. The Developers petitioned the Planning Board to reconsider its ruling. It then sought judicial review before the Puerto Rico Court of Appeals, which ruled in its favor. That ruling is now pending before the Puerto Rico Supreme Court. A holding that the Developers had a federal procedural due process claim on these facts would contravene our case law. See id. at 31; see also Nestor Colon Medina & Sucesores, Inc. v. Custodio, 964 F.2d 32, 40 (1st Cir.1992).

The Developers nevertheless attempt to distinguish PFZ Properties on several grounds, none of which is persuasive. First, they contend that “the plaintiff in [PFZ Properties] claimed an entitlement to a construction permit that was never issued and over which the plaintiff never acquired a vested property interest [while] this ease deals with permits that were issued and revoked after the Developers had effectively acquired a vested right.” This point is inapposite. Although the PFZ Properties court was skeptical of the plaintiffs claimed property interest, it assumed arguendo that the plaintiffs did have such an interest and that the agency’s actions had deprived it of that interest. See 928 F.2d at 31. PFZ Properties turned not on the nature of the developer’s property right, but on the availability of post-deprivation process. Id. Nowhere in the opinion did we suggest that the constitutional standard by which we judge the adequacy of post-deprivation relief varies with the strength of the plaintiffs claimed property interest.

The Developers also assert that PFZ Properties is distinguishable because here, “the Planning Board could have, should have, and must have provided the Developers with a hearing prior to revoking the land use permit over which they had a vested property right.” The logic of this claim is not clear. Even if'the Planning Board should have provided the Developers with a hearing in this case (a judgment we do not make), the alleged deprivation of property, as in PFZ Properties, “results from conduct of state officials violative of state law.” Id. The Developers concede as much elsewhere in their brief, acknowledging that “since ... the Planning Board acted ultra vires [when it revoked the permit], there really is no process that could have been afforded to safeguard the Developers’ constitutional rights.” As in PFZ Properties, then, the only question is whether adequate post-deprivation process was available to the plaintiffs. We agree with the district court that adequate post-deprivation process was available here in the form of administrative and judicial review of the Planning Board’s decision. The plaintiffs have not stated a procedural due process claim upon which relief can be granted.

C. Substantive Due Process

Asserting that the Planning Board acted without jurisdiction when it revoked the permit and that it improperly usurped ARPE’s jurisdiction by restraining that agency from granting any additional permits, the Developers also claim a violation of their substantive due process rights. This claim, too, is foreclosed by PFZ Properties and subsequent case law.

In PFZ Properties, we explained the standard for establishing a substantive due process violation in the land use permitting context:

This Court has repeatedly held ... that rejections of development projects and refusals to issue building permits do not ordinarily implicate substantive due process. Even where state law officials have allegedly violated state law or administrative procedures, such violations do not ordinarily rise to the level of a constitutional deprivation. The doctrine of substantive due process does not protect individuals from all [governmental] actions that infringe liberty or injure property in violation of some law. Rather, substantive due process prevents governmental power from being used for purposes of oppression, or abuse of government power that shocks the con-, science, or action that is legally irrational in that it is not sufficiently keyed to any legitimate state interests.

Id. at 31-32 (internal citations and quotation marks omitted) (brackets in original). Although “[w]e have left the door slightly ajar for federal relief in truly horrendous situations, .... the threshold for establishing the requisite ‘abuse of government power’ is a high one indeed.” Colon, 964 F.2d at 45.'

The Developers’ allegations concerning the Planning Board’s determination that the permit expired without the commencement of actual and effective construction do not state a substantive due process violation under this standard. In its strongest form, the Developers’ claim is essentially that the Planning Board made an erroneous decision in violation of state law. This claim is indistinguishable from the one we rejected in PFZ Properties. See 928 F.2d at 32 (holding that “PFZ’s allegations that ARPE officials failed to comply with agency regulations or practices in the review and approval process for the construction drawings are not sufficient to support a substantive due process claim”); see also Licari v. Ferruzzi 22 F.3d 344, 349 (1st Cir.1994) (rejecting a substantive due process claim based on allegations that a town planning board improperly revoked the developer’s building permits and delayed processing and approval of an application for an amended permit). We agree with the district court that the plaintiffs have not stated a substantive due process claim upon which relief can be granted.

D. Equal Protection

Finally, the Developers recast the permit revocation as an equal protection violation. Emphasizing that laying a foundation ordinarily qualifies as actual and effective construction, the Developers point out that the Planning Board determined in this case that the Developers had not commenced actual and effective construction by December 16,1998 despite the fact that they had begun laying a foundation. The Developers reason that by determining that laying a foundation did not constitute actual and effective construction, the Planning Board “treated them differently than all others who are similarly situated” in contravention of the Fourteenth Amendment Equal Protection Clause. We disagree.

Although’ a land use dispute may give rise to an equal protection claim in extreme circumstances, see Colon, 964 F.2d at 44, such circumstances are not present here. The Developers allege no facts that suggest invidious discrimination based on a prohibited category such as race or sex, nor have they pointed to an egregious procedural irregularity or abuse of power that might constitute a federal equal protection violation. See id. They assert only that they were treated differently from other individuals who lay a foundation before a permit deadline for the commencement of actual and effective construction. That allegation, however, “represents nothing more than a claim that [the permitting agency] departed from its own procedures or those provided by Puerto Rico law.” PFZ Props., 928 F.2d at 32. Absent facts reflecting more fundamental discrimination, the plaintiffs have not stated a claim under the Equal Protection Clause of the Fourteenth Amendment.

Affirmed. 
      
      . Puerto Rico law defines "actual and effective construction” — or, as the parties refer to it, "real and effective construction” — as "the commencement of the works of urbanization and the construction of a permanent structure on the land, that is to say, any work done beyond the stage of excavation.” 23 P.R. Laws Ann. § 62o.
      
     
      
      . The Fifth Amendment Takings - Clause provides that "private property [shall not] be taken for public use, without just compensation.” U.S. Const. amend. V. This clause applies to the states under the Fourteenth Amendment. See Pascoag Reservoir & Dam, LLC v. Rhode Island, 337 F.3d 87, 92 n. 4 (1st Cir.2003), cert. denied, 540 U.S. 1090, 124 S.Ct. 962, 157 L.Ed.2d 795 (2003). The Fourteenth Amendment Due Process and Equal Protection Clauses provide that "[no] State [shall] deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.” U.S. Const. amend. XIV, § 1.
     
      
      . Emphasizing that the Developers failed to oppose the motion to dismiss in the district court, the appellees assert that the Developers have waived their substantive claims on appeal The Developers respond that the district court granted the motion to dismiss based substantially on arguments not raised in the motion itself, and therefore that they could not have been expected to raise the claims in the district court that they advance on appeal. While it is true that the Developers could have raised these claims in a post-judgment motion, we will not treat their failure to do so as a waiver in this case. See United States v. LaGuardia, 902 F.2d 1010, 1013 (1st Cir.1990) (explaining that an appellate court may relax the raise-or-waive rule under certain circumstances). Instead, we will follow the lead of the district court and address the Developers’ claims on their merits.
     
      
      . According to the Developers, "the Planning Board warned ARPE that it could proceed no further, i.e., that it could not issue further permits, since the Land Use Permit expired on December 16, 1998 without the Developers having engaged in ‘[actual] and effective' construction.”
     