The declining real estate market and a contractor’s bankruptcy effectively sank a Framingham condo owner’s chances of selling its units, according to the owner’s own bankruptcy filing.

New documentation reveals more about the troubles of David Depietri-owned Framingham 4 Bishop LLC, which operates converted paper mill-turned-condos The Residences at Dennison Triangle. Depietri is a principal of Rosewood Management Co. and a player in another recent bankruptcy filing out of Marlborough.

Touted as a major redevelopment project for Framingham, The Dennison Triangle Properties’ 84 units are filled mostly with renters. Depietri company couldn’t sell the units as planned thanks to the declining market, according to the filing.

But a related company’s filing also hurt the development. Payton Construction, the general contractor for the building, itself filed for bankruptcy during the restoration of the property. That delayed its restoration work, which in turn resulted in the loss of "numerous sales" because the company couldn’t close within the timeframe set by purchase and sale agreements.

The bankruptcy in question is over the $29 million that lender Amalgamated Bank of New York City says it’s owed. Framingham 4 Bishop originally took out a construction loan of $20 million in 2005, which was then increased by more than $5 million several years later.

The filing went on to say that Depietri’s company made multiple attempts to resolve its issues with Amalgamated Bank, but the lender scheduled a foreclosure sale of the property on Aug. 12. Bishop forestalled that event by filing for Chapter 11.

In addition, various liens have been placed on the property, including one by the town of Framingham for outstanding real estate taxes.