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.
Trusted by trade contractors across the country












Other construction terms
What is a Lender?
A construction lender is a bank or financial institution that provides short-term financing specifically for construction companies, developers, and builders working on construction and development projects. In commercial construction, these lenders control project cash flow by deciding when and how much money gets released throughout a project. Instead of providing all funding upfront, they release funds in phases as work gets completed and milestones are hit, which affects everyone involved in the project—especially subcontractors.
Here's how it works for commercial subcontractors: the lender has to approve each payment before the general contractor gets their money, and only then can the GC pay their subs. This means subcontractors are essentially waiting in line behind both their GC and the lender's approval process, which can stretch out payment timelines well beyond what's written in their contracts.
Construction lenders also require extensive paperwork before releasing funds, including lien waivers from all project participants and current insurance certificates. If any documentation expires or goes missing, it can freeze the entire payment process. This means subcontractors must stay organized with their accounts receivables, match their progress billing to lender draw schedules, and keep track of compliance deadlines for themselves and any lower-tier vendors and suppliers.
Siteline streamlines these A/R workflows by centralizing lien waiver tracking and submission, helping subcontractors prevent costly payment delays caused by missing documentation. Learn more here.
What is Software as a Service (SaaS)?
Software as a Service (SaaS) in the context of the construction industry is a key model of cloud computing. It allows construction firms to access software over the internet on a subscription basis. Examples of SaaS tools in construction include project management applications, design software, and collaboration tools. The biggest advantage for the construction industry is that SaaS eliminates the need for hardware acquisition, software licensing, and complex installations. It enables real-time data sharing, enhancing collaboration among teams located in different locations of the world. Users can access services from any internet-enabled device, offering mobility and flexibility. Investment into maintenance and upgrade is also reduced as the SaaS provider takes care of these. Thus, SaaS plays a vital role in streamlining construction operations by making software more accessible and affordable.
What is Accounts Payable (A/P)?
Accounts Payable (A/P) in the context of the construction industry refers to the amount of money a company owes to its suppliers or vendors for goods and services received but not yet paid for. These could range from raw materials bought for construction, to equipment rental fees, to labor costs for contractors. Essentially, they are debts that a construction company needs to clear within a specified timeline. Managing A/P effectively is crucial in the construction industry to maintain positive relationships with suppliers and vendors, ensure a steady supply of materials and services, and promoting healthy cash flow. Regular reviews of the A/P process can help avoid potential financial hiccups and keep the construction projects running smoothly.
