Prospect Homes, a local homebuilder for more than 25 years, filed for Chapter 11 bankruptcy Tuesday. The company owes more than $50 million to hundreds of creditors. Many businesses listed as creditors were not surprised by the news, as checks had been late in arriving for at least six months. But several local business owners said they kept working with Prospect after Audi met with them, in part because they wanted future work and had known the company for decades.