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Construction glossary
Construction Glossary •

Payment Applications (Pay Apps)

What are Payment Applications (Pay Apps)?

A payment application (or pay app) is a comprehensive collection of documents that construction contractors submit to request progress payments throughout a project. Rather than just a simple invoice, payment applications include multiple forms and supporting documentation that prove what work was completed, which materials were used, and what payment is due. The typical pay app package includes: 

  • an application for payment form, 
  • a continuation sheet with schedule of values details, 
  • lien waivers, and 
  • often backup documents like material receipts and payroll reports. 

Payment applications are submitted on predetermined schedules—whether monthly, at project milestones, or when specific percentages of work are completed—and serve as the primary billing mechanism for longer, higher-budget construction projects.

For subcontractors, mastering payment applications is critical because they directly impact cash flow and project profitability. The process involves coordinating between accounting teams, project managers, and vendors to gather all required documentation before submission deadlines. Common mistakes—like using incorrect forms, missing documentation, math errors, or late submissions—can delay payments and disrupt cash flow. Many GCs have their own custom forms and specific requirements, making attention to contract details essential. 

For detailed guidance on navigating the entire pay app process, check out our payment application guide. Or better yet, check out Siteline—built specifically for commercial subcontractors to streamline the entire payment application process. Siteline handles any custom pay app form, assembles all required lien waivers for you and your lower tiers, and tracks change orders to ensure accurate, on-time submissions. Subcontractors using Siteline get paid up to three weeks faster than with traditional manual processes. Request a demo here and see how Siteline puts your pay apps on autopilot so you can focus on the work that matters most.

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Other construction terms

Lien Waiver

What is a Lien Waiver?

A lien waiver is a legal document used in the construction industry that is often exchanged between parties involved in a construction project. This waiver essentially absolves or "waives" the claimant's (typically a project participant like a contractor, subcontractor, or supplier) right to impose a lien on the property for the amount they have been paid. It's often used upon payment to ensure that the payer is protected from double payment or any encumbrances on the property related to payment disputes. There are four general types of lien waivers: conditional and unconditional, each of which can be used for progress or final payment. Each type has its own legal implications, so it's important to understand them fully before signing.

Indirect Costs

What are Indirect Costs?

Indirect costs, in the context of the construction industry, are expenses not directly tied to a specific project, but are essential for the overall operation of a construction firm. They represent the expenditures that do not contribute to the building process directly, yet they are crucial for the smooth running of projects. Such costs could include administrative expenses like office rent, utilities, and salaries of personnel not active on the field but are involved in management, planning, or supervision. Other examples include insurance, security, equipment depreciation, and legal fees. Understanding indirect costs is key to accurate budgeting and financial control in construction projects. Failure to consider these costs can lead to a significant underestimation of the actual project cost, leading to financial losses. Therefore, contractors need to accurately factor indirect costs into their pricing to secure profitability.

Lien

What is a Lien?

A lien, particularly in the construction industry, is a legal claim or right that a contractor, sub-contractor, or supplier places on a property at which they have rendered services or supplied materials, but haven't been paid. Essentially, it's a security interest granted over an item of property to secure the payment of a debt or performance of some other obligation. If the property owner does not fulfill the financial obligation, the lien holder may seek legal action to enforce their rights and might even result in the compulsory selling of the property to pay off the debt. Liens are crucial elements in construction law, ensuring parties are fairly compensated for their work and supplies provided.

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