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Construction glossary

What is Cash Flow?

Cash flow, as applied to the construction industry, refers to the net amount of money moving in and out of a construction business within a defined period of time. This includes income from clients, loan repayments, supplier payments, salaries, and overhead costs. Crucially, understanding cash flow is vital for a construction firm as it helps in making strategic decisions for sustainable growth. It can be used to assess the liquidity and overall financial health of a business. With an active construction project, cash flow can be unpredictable due to unexpected expenses, delayed payments, or cost overruns, requiring diligent cash flow management.

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Other construction terms

Cloud-Based Software

What is Cloud-Based Software?

Cloud-Based Software, in the context of the construction industry, refers to software applications that are hosted on remote servers and accessible via the internet. Instead of being installed directly on your local hardware or computer, the software applications and data are stored and managed on servers in a remote data center. This means you can access them from any device, at any time, provided you have an internet connection. The use of cloud-based software in construction allows real-time sharing and collaboration on projects, efficient storage of large design files, automated scheduling, accurate cost estimation and improved resource management, thus enhancing efficiency and productivity.

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.

Unconditional Lien Waiver

What is an Unconditional Lien Waiver?

An Unconditional Lien Waiver in the construction industry is a signed document from a contractor, subcontractor, materials supplier, laborer, or other party involved in a construction project, which gives up their right to place a lien on the property unconditionally, typically after they have received full or partial payment for their work or materials. It serves as a guarantee to the property owner that they will not face a lien, or legal claim against their property, for this party's unpaid work or supplies, regardless of whether the party is subsequently paid in full or not.

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