Definition
What it means
A lien (also called a builder's lien, mechanic's lien, or contractor's lien depending on the jurisdiction) is a legal claim a contractor can register against a property when the customer fails to pay for work performed on it. The lien attaches to the property title, meaning the customer cannot sell or refinance until the debt is settled. It's the strongest collection tool a contractor has, but every jurisdiction has strict deadlines for filing.
When you'd use a lien
When a customer has refused to pay despite reminders, the dispute is genuine, and the work was performed on the property in question. Liens are not for trade-account disputes or work disputes resolved by warranty. They're for unambiguous unpaid invoices on property-attached work.
Critical: jurisdiction-specific deadlines
Most jurisdictions require the lien to be filed within a set window after the work is completed (often 60 to 120 days). Missing the deadline kills your lien rights and you have to chase the debt as an ordinary creditor. Always check the deadline in your jurisdiction the moment a payment becomes overdue.
How to avoid needing a lien
Take deposits on every job over $1,000. Issue progress invoices on longer work so you're never carrying the whole project. Use written acceptance on every quote (signed copy or WhatsApp 'yes'). Stop work the moment a progress invoice is overdue. Liens are the last resort, not the first.
Related terms
Other glossary entries you might want next
Closely related terms in the trades-finance vocabulary, with the same plain-English treatment.
Payment Terms
The agreement on when an invoice must be paid. Standard wording like 'Net 7' means 7 days from invoice date.
Progress Payment
A staged invoice issued during a longer project, billed against milestones or a percentage-complete basis rather than waiting for the entire job to finish.
Deposit
An upfront payment the customer makes on acceptance, typically 20-50 percent. Covers your material outlay and commits the customer to the booking.
Put it to work
Templates that use this concept
Free quote and invoice templates where this term naturally appears.
Testimonials
Trusted by tradespeople
Real tradespeople using QuoteGenio to quote and invoice from their phone, with the trades-finance vocabulary you've just read about.
“Monthly statements for my office clients go out and they pay faster. Chasing invoices used to eat my whole Friday. Now it takes 10 minutes.”
Rebecca Taylor
Cleaning Services · Leeds
“I like how simple it is. No learning curve. I created my first quote in a few minutes and sent it straight away.”
Chris Botha
Carpenter · Bloemfontein
“Wedding packages have so many variables. Sharing a quote on WhatsApp and getting acceptance in the same hour has won me bookings I would have lost.”
Elena Ortiz
Wedding Photographer · Barcelona
Read more
Articles that go deeper on this topic
Long-form posts from the QuoteGenio blog that put this concept in real-world context.
5 Ways Tradespeople Can Get Paid Faster
Late payments hurt cashflow more than almost anything else. These five habits help tradespeople get paid on time, every time.
What a Free Quoting Tool for Tradespeople Should Do
Not every free quoting tool for tradespeople earns its keep. A plain checklist of what to look for, what to avoid, and what tradies actually use.
Convert a Quote to an Invoice in One Tap, No Retyping
The one-tap convert flow eliminates the retyping, the duplicate invoice numbers, and the mismatched line items that cost tradies hours each week.
Free forever plan
Start quoting faster. Win more jobs.
Create professional quotes in minutes, send instantly, and stay on top of your work without the admin slowing you down.
Free to start. No credit card required.