an “Initial Term” of three years “for the Lessee [CDC] to perform all necessary requirements for the review, design and structural ‘Study’ of the Leased Premises.” JA at 62.2 If CDC obtained certain required approvals, including “approval from the Board of Municipal and Zoning Appeals,” and satisfied certain other conditions, including demonstrating adequate financing, the lease would extend for an additional forty-seven-year term. Id. If CDC failed to meet the various conditions, the lease would terminate.
The lease provided that, during the Initial Term, the property “shall be used solely for the review, design and structural ‘Study’ of the leased premises.” JA at 61. Thereafter, if the lease were extended, the property “shall be used as office space by Lessee.” JA at 62. The lease further provided that, upon termination,
all alterations, additions or improvements made by either of the parties hereto upon the premises ... shall be the property of the Lessor, and shall remain upon and be surrendered with the premises at the termination of this Lease, without molestation or injury.
JA at 75.
CDC made improvements to the property during the Initial Term. In November 2003, for example, CDC applied for and received building permits to restore the Gatehouse. CDC installed approximately 650 feet of water and sewer lines and performed structural repairs. CDC asserts that it discussed this work with the City before, during, and after the time the improvements were made.
In 2004, CDC began to seek zoning approval from the Board of Municipal and Zoning Appeals (“Zoning Board”). Although the lease called for the property to be used “as office space by Lessee,” CDC sought approval to use it as a “multipurpose center.” It did so because the Zoning Board informed it that this was the only permissible use under the applicable regulations. Nevertheless, the Zoning Board ultimately denied the application, however, because CDC’s description of the project did not include the kinds of governmental or community activities required to qualify as a multi-purpose center as contemplated by the regulations. CDC did not seek judicial review of this decision in Maryland state courts.
On August 29, 2005, the City informed CDC that it believed the lease had terminated upon the expiration of the Initial Term due to CDC’s failures to demonstrate adequate funding and to obtain Zoning Board approval.
In August 2006, CDC brought an action against the City alleging, inter alia, breach of contract, unjust enrichment, and promissory estoppel.3 The district court granted summary judgment to the City on all claims, and this appeal followed.
II.
We review a district court’s grant of summary judgment de novo, taking all facts and permissible inferences in the light most favorable to the appellant. Castillo v. Emergency Med. Assoc., P.A., 372 F.3d 643, 646 (4th Cir.2004). As a federal court sitting in diversity, we apply the substantive law of Maryland, the state in which the action arose. Id. We address CDC’s arguments in turn.
2
.Citations to “JA” are to the Joint Appendix submitted by the parties.
3
CDC also alleged fraud in the inducement, fraud by concealment, and negligent misrepresentation, but those claims have not been pursued on appeal.