What is a General Ledger (G/L)?

Liquidated damages in the construction industry are a pre-agreed sum specified in a construction contract, which the contractor will pay to the client in the event of a breach of contract, typically when there are delays in completion. This contract clause serves as a protection mechanism for the client, giving an estimate of the potential loss they might incur due to the delay. However, liquidated damages must be a genuine pre-estimate of loss, not a penalty. They are not intended to be a punishment, but a compensation for the client's actual anticipated loss. This approach mitigates the risks and provides predictability for both parties in a construction project. One party cannot claim more than the contracted liquidated damages. They bring certainty to the potentially complex process of calculating actual damages in construction delays, thus fostering an efficient dispute resolution.

A partial lien waiver (sometimes called a progress lien waiver or partial waiver of lien) is a legal document used in construction where a contractor, subcontractor, or supplier waives their right to file a mechanics lien for a specific, partial amount of money already received.

Issued alongside progress payments, a partial waiver applies only to the amount paid through a specific date—leaving the right to lien open for any future or uncollected funds. These can be conditional (protecting you by taking effect only after the check clears) or unconditional (taking effect immediately upon signing). Tracking them carefully prevents payment disputes and keeps cash moving across job sites.

How Siteline Helps:
Managing partial waivers across every pay app can quickly bottleneck your cash flow. Siteline automates the entire workflow—from generating and sending your own progress lien waivers to GCs, to collecting and tracking signed waivers from lower-tier vendors and suppliers before payments are released.

Overbilling (or billing in excess of costs) occurs when you’ve invoiced your client for more work than you’ve actually completed or incurred costs for. In other words, it represents getting paid ahead of your work schedule.

Here’s how it works: If you’re a concrete subcontractor on a $100,000 job and you bill 50% upfront ($50,000) but have only completed $30,000 worth of work, that $20,000 difference is your billings in excess of costs. You owe your client that work, and until you complete it, that $20,000 remains as a liability on your balance sheet.

For subcontractors, understanding billing in excess of costs is essential because it can be a strategic cash flow tool when used carefully. For example, when bidding on a job, you can be smart about how you structure your schedule of values (SOV)—breaking work down into more detailed line items that allow earlier billing. However, this strategy requires regular monitoring to ensure:

• Your billing somewhat aligns with your actual percentage complete, and 
• The remaining contract value will still cover your remaining costs.

The biggest risk of overbilling is thinking your margins look better than they are, simply because you’re collecting cash faster. Surety companies and lenders also scrutinize overbillings closely, as excessive amounts can signal poor project management or potential cash flow problems down the road.

With Siteline, you can easily track whether you’re billing in excess of your costs by pulling your month-to-month incurred costs and comparing them against your billing progress. This real-time visibility helps ensure you’re billing appropriately while maintaining realistic profitability expectations. If you’re interested in seeing for yourself, schedule a personalized demo of Siteline here.