Notice of Intent to Lien (NOI)
What is a Notice of Intent to Lien (NOI)?
A notice of intent to lien (NOI)—sometimes called an intent notice or notice of non-payment—is a legal document that serves as a final warning from a subcontractor or supplier to the property owner, developer, or general contractor (GC) indicating their intent to file a mechanic’s lien against the property in the event of non-payment.
The purpose of an NOI is two-fold: First, it protects the subcontractor’s or supplier's rights to establish a legal claim against the property, allowing them to file a lien—or pursue legal action—if the outstanding payment is not made within a specific time frame. Second, it motivates the responsible party (i.e., property owner, developer, or GC) to settle the outstanding payment(s). This is because once a mechanic’s lien is filed, the property owner can’t sell or refinance the property until the debt is settled.
Currently, NOIs are only legally required in nine states:
- Arkansas (10 days before filing lien)
- Colorado (10 days before filing lien)
- Connecticut (Within 90 day lien period)
- Louisiana (material suppliers on residential projects 10 days before filing lien)
- Missouri (10 days before filing lien)
- North Dakota (15 days before filing lien)
- Pennsylvania (30 days before filing lien)
- Wisconsin (30 days before filing lien)
- Wyoming (10 days before filing lien)
However, regardless of state requirements, sending NOIs can be a beneficial and inexpensive step that increases subcontractors’ chances of getting paid (ideally without actually having to file a lien). Note that subcontractors must first submit a pre-lien (or preliminary) notice before submitting an NOI. Making both of these a standard part of accounting processes for past-due payments can improve A/R collection processes—and get payments in the door faster.
Along this vein, Siteline empowers subcontractors by providing visibility into outstanding payments across all projects, alerting them when it's time to pursue overdue balances—or issue an NOI for the most persistent cases.
To experience how Siteline can help your subcontracting business proactively manage payment processes, leverage NOIs when necessary, and accelerate cash flow, book a personalized demo today.
Trusted by trade contractors across the country













Other construction terms
What is a Trade Contractor?
AA trade contractor, also known as a subcontractor, is a specialized construction professional hired by a general contractor (GC), construction management property, owner, developer, or other entity to complete specific aspects of a construction project. Trade contractors typically specialize in a particular trade or craft, such as electrical work, plumbing, HVAC installation, framing, roofing, glazing, flooring, or drywall installation. They are bound by a contract that outlines the tasks to be performed, deadlines, and terms of payment.
Trade contractors are distinguished from GCs in several ways. GCs oversee the entire construction project, managing all aspects from start to finish, including coordinating trade contractors, obtaining permits, and ensuring compliance with building codes and regulations. Trade contractors, on the other hand, focus solely on their specialized area of work and are responsible for completing their specific tasks according to the project's plans and specifications.
Trade contractors face extensive payment cycles, as they cover all labor and material costs upfront for a project yet receive payment last. Progress billing further complicates the matter, mandating that GCs only reimburse trade contractors based on project completion percentage. This system requires trade contractors to invoice GCs every month for the work completed, which exposes them to various factors that can delay progress billing further. These include:
- using the wrong pay application form,
- missing documentation,
- lien waiver oversights,
- submitting pay apps through the wrong GC portal,
- general project delays and disputes, or
- the GC’s own cash flow issues.
As a result, most trade contractors wait about 90 days to get paid for the work they’ve already done, which can strain their cash flow and hamper their ability to take on new projects or pay their employees and suppliers.
This is where Siteline comes in. Siteline is a construction billing solution built specifically to streamline the subcontractor A/R workflow. With Siteline, trade contractors can easily generate and submit detailed pay apps tailored precisely to each GC's requirements. The platform also:
- tracks all compliance requirements and stores pertinent documents;
- tracks, collects, and submits lien waivers for the sub and their lower tiers;
- ensures approved change orders are incorporated into the schedule of values;
- provides full visibility into billing statuses across projects—including which GCs pay fastest to better anticipate cash flow; and
- creates accurate billing projections to monitor progress and effectively manage backlog.
By eliminating manual spreadsheets and centralizing all billing data, Siteline helps trade contractors accelerate their payment cycle by an average of three weeks. Discover how Siteline can get your subcontracting business paid faster by scheduling a demo today.
What is a Release?
In the construction industry, a release is a legal instrument that acts to terminate any legal liability between the releasor and the releasee, signed by the releasor. It is often used to settle disputes or claims, with one party agreeing to release the other from any existing obligations, responsibility or further legal action in return for a negotiated compensation. It may also refer to a point in a construction project where work is considered complete to a given level, allowing for payment or the transfer of responsibility to the next party involved in the process.
What are Back Charges?
Back Charges are bills sent to subcontractors or vendors for unforeseen work that a general contractor or project manager had to complete on their behalf within the construction industry. This generally occurs when the subcontractor or vendor fails to complete their work scope to the specified standards, misses deadlines, or omits parts of their contracted responsibilities, and someone else must step in to rectify the issue. Therefore, the party who had to complete or redo the work sends 'back charges' to the original contractor, expecting reimbursement for labor, services, materials, or other costs involved in the completion of the task. They serve as a form of financial protection for the companies against contractual breaches in the construction projects.