5th and Walnut Parking, LLC; 5th and Walnut Tower, LLC; 5th and Court, LLC; Justin Mandelbaum; and Sean Mandelbaum v. City of Des Moines

CourtSupreme Court of Iowa
DecidedJune 12, 2026
Docket24-1886
StatusPublished

This text of 5th and Walnut Parking, LLC; 5th and Walnut Tower, LLC; 5th and Court, LLC; Justin Mandelbaum; and Sean Mandelbaum v. City of Des Moines (5th and Walnut Parking, LLC; 5th and Walnut Tower, LLC; 5th and Court, LLC; Justin Mandelbaum; and Sean Mandelbaum v. City of Des Moines) is published on Counsel Stack Legal Research, covering Supreme Court of Iowa primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

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5th and Walnut Parking, LLC; 5th and Walnut Tower, LLC; 5th and Court, LLC; Justin Mandelbaum; and Sean Mandelbaum v. City of Des Moines, (iowa 2026).

Opinion

In the Iowa Supreme Court

No. 24–1886

Submitted March 25, 2026—Filed June 12, 2026

5th and Walnut Parking LLC, 5th and Walnut Tower LLC, 5th and Court LLC, Justin Mandelbaum, and Sean Mandelbaum,

Appellees,

vs.

City of Des Moines,

Appellant.

Third-Party-Plaintiff Appellant,

John Mandelbaum,

Third-Party-Defendant Appellee.

Appeal from the Iowa District Court for Polk County, Lawrence P.

McLellan, Business Specialty Court Judge.

The City appeals and the developers cross-appeal from a judgment for

money damages on a failed real estate project. Appeal Affirmed in Part and

Reversed in Part; Cross-Appeal Affirmed.

Waterman, J., delivered the opinion of the court, in which all participating

justices joined. McDermott, J., took no part in the consideration or decision of

the case. 2

Thomas G. Fisher Jr. (argued), Deputy City Attorney, and John O.

Haraldson, Assistant City Attorney, Des Moines, for appellant.

Todd M. Lantz (argued), Mark E. Weinhardt, William C. Admussen, and

Jason R. Smith of Weinhardt & Lantz, P.C., Des Moines, for appellee. 3

Waterman, Justice.

The Tower at Fifth and Walnut in downtown Des Moines was supposed to

be a testament to modern design, with upscale residential lofts, a movie theater,

and ample parking, but what began as a promising urban development devolved

into a costly litigation quagmire. This breach of contract case was tried to the

court. The trial court’s factual findings are binding upon us if supported by

substantial evidence. CMT Highway, LLC v. Logan Contractors Supply, Inc., __

N.W.3d ___, ___, 2026 WL 1108827, at *4 (Iowa Apr. 24, 2026). We view the

evidence in a light most favorable to the trial court’s judgment. Id. Our

dispositions of the fact-bound issues in this appeal are largely dictated by this

standard of review.

For the reasons explained below, we affirm the district court judgment

against the City of Des Moines for breach of contract and the damages awarded

for that breach in the amount of $4,353,677. We vacate its judgment against the

city for tortious interference with contract. And we affirm the district court

judgment rejecting the parties’ additional claims for relief.

I. Background Facts and Proceedings.

A. Early Stages of the Fifth and Walnut Development. In 2009, Justin

Mandelbaum, a real estate developer who had spent his career to that point

working internationally and on the East Coast of the United States, moved back

to his hometown of Des Moines. Justin was eager to ply his trade in the local

real estate market. He joined Mandelbaum Properties, his family’s real estate

development firm, and began hunting for development opportunities in

downtown Des Moines.

In 2013, Justin and his team began looking at property around Court

Avenue. When a property became available, Justin submitted a request for 4

proposal (RFP), a document that outlines a development plan that a local

government can use to evaluate the benefits of a given project. Justin’s RFP

proposed constructing a movie theater and entertainment complex. Despite

interest in the RFP, the City of Des Moines (the City) rejected Justin’s proposal

in favor of a Hy-Vee grocery store by the Polk County Courthouse.

In 2014, Matt Anderson, the City’s economic development director,

approached Justin to discuss another lot near Court Avenue. Anderson told

Justin to submit a developer-initiated proposal—a means of streamlining the

sale of City land. Justin submitted his proposal.

In the summer of 2015, the Des Moines City Council (City Council) voted

to accept for consideration Justin’s proposal and to open a ninety-day

competition period, during which time other developers could make a pitch for

their projects. No developer submitted a counterproposal.

In December of 2015, Justin and his team submitted a pro forma for the

City’s consideration. The pro forma was notable for two reasons. First, part of

Justin’s pro forma—and a fly in the ointment throughout this litigation—was a

parking garage.

Second, the pro forma contained a 5% development fee for Justin and his

team’s work on the project. Pursuant to the pro forma, the City would pay that

fee upon completion of the parking garage. Parking garages typically are not

profitable on their own. So, to make the project work, Justin needed subsidies.

To begin, the City agreed to sell Justin and his team a site for $4 million

dollars, with a forgivable “economic development” loan for the same amount,

meaning that Justin would acquire the land for zero net cash outlay. The City

also offered tax incentives, bond financing, and shortfall loans to facilitate the

project. 5

In early 2017, after months of negotiations, Justin and the City reached a

final development agreement (Development Agreement) for the project. The

project was to consist of three elements: a parking garage with space for

restaurants and retail stores, which was to be completed by August of 2020; a

forty-story tower with a high-end hotel and residential lofts (the Tower), and a

theater complex with an upscale dine-in movie theater and additional retail

space (the Theater)—both of which were to be completed by August of 2028. By

finishing the parking garage first, Justin and his team would provide parking

spaces for the City and revenue to pay off their forgivable loan.

Article 8, Section 8.2(E) of the Development Agreement provided:

E. Developer agrees that if the costs of constructing the Parking Garage exceed the Stipulated Price due to no fault of the City, then Developer shall be responsible for the increase in costs associated with completing construction of the Parking Garage. City acknowledges that City is not entitled to participate in any savings realized by Developer in the acquisition, construction or development of the Parking Garage or Parking Parcel, and that any savings or benefits realized shall accrue 100% to Developer.

This meant that if Justin and his team completed the garage under budget, then

they were entitled to keep the amount saved.

Under Article 10 of the Development Agreement, both the City and Justin

and his team had certain rights. Most importantly for this litigation,

Sections 10.1 and 10.4 of the Development Agreement provided the terms

governing a default by either party.

Section 10.1 stated:

A. Except as otherwise specifically provided in this Agreement, in the event of a default by either party under this Agreement, the aggrieved party may by written Notice of Default to the party in default, demand that it proceed immediately to cure or remedy such default, and, in any event, complete such cure or remedy within forty-five (45) days (or such other time as may be specifically provided herein) after receipt of such notice. Any default on an 6

obligation to pay money shall be cured within five (5) business days after receipt of such notice. Notwithstanding the foregoing, if any non-monetary default reasonably requires more than forty-five (45) days to cure, such default shall not constitute a breach of this Agreement if the defaulting party commences to cure the default promptly upon receipt of the notice of the default and with due diligence thereafter continuously prosecutes such cure to completion.

B.

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5th and Walnut Parking, LLC; 5th and Walnut Tower, LLC; 5th and Court, LLC; Justin Mandelbaum; and Sean Mandelbaum v. City of Des Moines, Counsel Stack Legal Research, https://law.counselstack.com/opinion/5th-and-walnut-parking-llc-5th-and-walnut-tower-llc-5th-and-court-llc-iowa-2026.