What is Work in Progress (WIP)?

AIA® billing is a standardized payment application process for construction projects. Developed by the American Institute of Architects (AIA®), it uses specific forms—primarily the G-702® Application and Certificate for Payment and G-703® Continuation Sheet—to document and request progress payments throughout a project. These forms create a uniform system for contractors that shows exactly what work has been completed, what materials have been stored, and what payment is due during each billing period. They also require detailed information about contract values, change orders, and retainage amounts. AIA® has become the industry standard, especially for larger commercial projects and government contracts.

For subcontractors, understanding AIA® billing is essential since most large general contractors (GCs) require these forms or customized versions of them. While AIA® billing can initially seem complex, it provides important benefits like reducing payment disputes, creating clear documentation of work progress, and often resulting in faster payments. Mastering AIA® billing opens doors to working with larger GCs and bidding on more substantial projects. That’s why we created this comprehensive guide, filled with detailed information on completing AIA® billing forms and managing the payment application process.

Siteline simplifies the AIA® billing process by automating form creation and submission. Our system currently maintains 15,000 custom billing forms from more than 10,000 GCs, enabling subcontractors to generate perfect pay apps in minutes for fewer delays and faster, more predictable payments. Schedule a no-obligation demo to see how Siteline can help you streamline AIA® billing and reduce invoice aging by at least 30%.

A Mechanic's Lien is a legal tool used within the construction industry. This claim is used by contractors, subcontractors or suppliers who have not been paid for work or materials provided on a construction project. The lien is attached to the property where the work or supply was carried out, and can impact the ability to sell or refinance the property until the debt is settled. Essentially, it's a security interest in the title of the property for the benefit of those who have supplied labor or materials that improve the property. The nature and rules of a Mechanic's Lien can vary by jurisdiction, but the overall concept is to provide a form of protection to those in the construction industry that have fulfilled their contractual obligations but have not received their due payment.

Insurance, in the context of the construction industry, refers to a contract known as an insurance policy, that a company or individual buys from an insurance provider to reduce the financial risk associated with potential loss or damage. There are numerous types of insurance policies like liability insurance, builder's risk insurance, and workers compensation that are specifically designed to safeguard construction businesses against various hazards. For example, if a construction site accidentally experiences unexpected damages, having proper insurance can alleviate the burden of these costs. Each insurance policy has a premium and a deductible, and the terms and conditions can extensively vary based on the policy. The selection of insurance types and coverage should be made meticulously considering the nature and scope of the construction project.