What is a Notice of Commencement (NOC)?
What is a Notice of Commencement (NOC)?
A Notice of Commencement (NOI) is a legal document filed by general contractors (GCs) to formally declare the start of a construction project. In addition to establishing an official record of when construction began, it also provides essential information about the project—property details, project scope, contact information for key project stakeholders, etc. In some states, it may be referred to as a Notice of Project Commencement, an Affidavit of Commencement, or a Notice of Contract.
For subcontractors, NOCs are important because they determine when you need to file paperwork to protect your lien (and thereby, payment) rights. Once the owner or GC files an NOC, it often changes the deadlines for when you must submit preliminary notices and mechanics’ liens. These documents contain vital project information, including:
- legal property descriptions,
- owner details,
- GC information, and
- surety data.
In most states where NOCs are required, they must be posted at the job site and recorded with the county clerk’s office. Subcontractors should be aware that failing to respond properly to an NOC could result in losing their right ot file a lien if a payment issue arises.
Staying informed about documentation like NOCs is crucial for securing payment on construction projects. For more detailed information on how to protect your lien when working on projects with an NOC, visit this blog post for the complete guide and best practices. Subscribe to Siteline’s newsletter for regular updates on getting paid on time and protecting your bottom line.
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Other construction terms
What is a Contractor?
In the construction industry, a contractor is the party responsible for delivering a project or a portion of it, typically under a formal agreement with the project owner. Contractors oversee labor, materials, equipment, and scheduling to ensure work is completed according to the contract’s scope, quality standards, and timeline.
A general contractor (GC), sometimes called a prime contractor, manages the overall project and hires subcontractors to perform specialized work such as electrical, plumbing, or concrete. Whether a contractor is a GC or a subcontractor, they operate under legally binding terms that outline deliverables, payment schedules, and compliance requirements.
Being a contractor means navigating complex billing requirements—especially on the subcontractor side. Pay applications must match each client’s requirements, include precise documentation, and often wait on a chain of approvals before payment is released. Any hiccup (e.g., a missing lien waiver, the wrong form, an incorrect total) can push payment weeks or even months past due. In an industry where it already takes an average of 96 days to get paid, those delays can put serious strain on cash flow.
Siteline was built to help commercial subcontractors overcome these hurdles. Our software automates pay application creation, keeps lien waivers organized and compliant, and tracks payment status in real time. By streamlining the billing process, contractors using Siteline can avoid lengthy payment delays, strengthen relationships with GCs, and get paid faster.
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 are Preliminary Notices?
Preliminary Notices are legal documents that are commonly used in the construction industry. These notices are also known as pre-lien notices or notices to owner. They are typically sent at the beginning of a construction project by the subcontractors, suppliers, or equipment renters, essentially anyone who does not have a direct contractual relationship with the property owner. The main purpose of these notices is to inform the property owner, general contractors, or other party with financial interest in the property, of the sender's involvement in the project and their right to file a lien in the event they are not paid for the services or materials provided. It's an essential step in securing one's right to payment. Moreover, Preliminary Notices serve as a professional way to maintain transparency and communication in construction projects and promote smoother and more prompt payments.
