AGREEmENT mODIFICATIONS. ​​ Keep the owner-architect agreement up to date.AIA Contract Documents are the most widely used standard form contracts in the building industry. Subcontractor's payment contingent upon general contractor's receipt of funds from owner. Subcontractor bears risk of owner's insolvency. DDC's construction contracts are handled through an open competitive bid process. Learn the basics of design and construction contract law and administration. Understand more about key legal issues for new york architects. As many design professionals are aware, the standard AIA contract between an owner and architect was significantly revised in 2007.