Construction Debt Collection: A Contractor’s Guide to Getting Paid

You did the work. You sent the invoice. And now you are waiting.

Waiting for a check that should have arrived three weeks ago. Waiting while you cover payroll, material bills, and equipment costs out of your own pocket. Waiting while the client dodges your calls and ignores your emails.

You are not alone. Unpaid invoices are one of the most common and most damaging problems in the construction industry.

According to the National Federation of Independent Business, construction companies wait an average of 83 days to receive payment. A Levelset survey found that 74% of contractors reported cash flow problems caused by slow or non-payment. And the Construction Financial Management Association estimates that bad debt costs the industry over $100 billion per year.

Those numbers are not abstract. They represent real contractors who cannot make payroll, who take on debt to cover costs that clients should have paid, and who sometimes lose their businesses over it.

This guide walks through the full lifecycle of construction debt collection. We will cover how to prevent non-payment before it happens, what to do at 30, 60, and 90 days past due, your legal options including mechanic’s liens and small claims court, and when it makes sense to write off the loss and move on.

Prevention Is Cheaper Than Collection

The best collection strategy is never having to use one. Most unpaid invoices can be traced back to problems that started before the first shovel hit the dirt.

Here is how to protect yourself before the project starts.

Better Contracts

Your contract is your first line of defense. If your contract is vague about payment terms, you are setting yourself up for problems.

Every construction contract should include:

• Clear payment terms. Net 15, Net 30, or whatever you decide. Spell it out.
• A payment schedule. For larger projects, define when payments are due (after milestones, monthly draws, percentage complete).
• Late payment penalties. Include a specific interest rate (1% to 1.5% per month is standard) and when it kicks in.
• Right to stop work. Include language that gives you the right to suspend work if payment is not received within a specified number of days.
• Lien rights notice. Many states require you to notify the owner of your right to file a mechanic’s lien. Include this in your contract even if it is not required.
• Attorney’s fees clause. State that the prevailing party in any collection dispute is entitled to recover attorney’s fees. This discourages clients from dragging things out.

Do not use a generic template you found online. Have a construction attorney review your contract. The few hundred dollars you spend on that review will save you thousands.

Progress Billing

Never wait until the end of a project to invoice. Progress billing breaks the total contract into smaller payments tied to milestones or percentage of completion.

Here is why this matters for collections:

• Smaller invoices are easier to collect than one large final payment
• You identify payment problems early, before you are deep into the project
• You maintain positive cash flow throughout the job
• If the client stops paying, your exposure is limited to the current phase, not the whole project

Set up your invoicing system to generate progress invoices automatically as work milestones are met. The less manual effort this takes, the more consistently you will do it.

Credit Checks and References

You check references for subcontractors. You should do the same for clients, especially on larger projects.

For commercial work:

• Run a Dun & Bradstreet or similar business credit report
• Ask for bank references and trade references
• Check court records for past lawsuits or liens
• Talk to other contractors who have worked with them

For residential work:

• Google the homeowner’s name along with terms like “lawsuit” or “contractor dispute”
• Check if they own the property (public records)
• Ask for references from past contractors they have worked with
• Trust your gut. If something feels off during the estimate, it probably is.

Turning down a bad client is always better than chasing a bad debt.

Use a CRM to Track Client Payment History

If you have worked with a client before, your own records are the best credit check available. A CRM system that tracks past projects, payment history, and notes about each client gives you the information you need to make smart decisions about who you work with.

When a past client calls for a new project, check their payment history first. If they paid late last time, adjust your terms accordingly or pass on the job.

The Collection Timeline: 30, 60, 90 Days

Despite your best prevention efforts, some invoices will go unpaid. When that happens, timing matters. The faster you act, the more likely you are to collect.

Here is a timeline for escalating your collection efforts.

Day 1 to 30: Friendly Follow-Up

At this stage, assume it is an oversight. Maybe the invoice got lost in someone’s inbox. Maybe the client is waiting on their own financing. Stay professional and give them the benefit of the doubt.

Actions to take:

• Day 1 past due: Send a polite email reminder. “Hi [Name], I wanted to follow up on invoice #1234, which was due on [date]. Please let me know if you have any questions.”
• Day 7: Follow up by phone. A quick call is harder to ignore than an email.
• Day 14: Send a second written reminder, slightly more firm. Reference the contract terms and the late payment clause.
• Day 21: Call again. Ask directly when you can expect payment. Get a specific date.
• Day 30: Send a formal notice that the account is now 30 days past due and that late fees are being applied per the contract.

Track all of this communication. Dates, times, what was said, and what was promised. You will need this record if things escalate.

Day 31 to 60: Escalation

If the client has not paid after 30 days of follow-up, the tone needs to change. You are past the point of friendly reminders.

Actions to take:

• Stop any ongoing work if your contract allows it. Do not continue investing labor and materials into a project where you are not getting paid.
• Send a written notice of your intent to stop work, citing the specific contract clause.
• Send a preliminary lien notice if you have not already (required in many states before you can file a mechanic’s lien).
• Make one more direct phone call to the client or their representative. Be clear: “This invoice is 45 days past due. I need payment by [date] or I will need to take further action.”

At this point, you should also start documenting the amount owed including any late fees, and gathering all supporting documents: the contract, change orders, invoices, delivery receipts, and photos.

Day 61 to 90: Formal Demand

This is the stage where you put the client on official notice that you are serious about collecting.

Actions to take:

• Send a formal demand letter (details below)
• File a mechanic’s lien if applicable (details below)
• Consult with a construction attorney about your options
• Decide whether to pursue collection through an agency, an attorney, or small claims court

Do not wait past 90 days to take formal action. Every week that passes reduces your chances of collecting.

Demand Letters That Work

A demand letter is a formal written notice to the client stating the amount owed, the basis for the debt, and the consequences of non-payment. It is not a threat. It is a professional statement of facts and intentions.

What to Include

• Your company name and contact information
• The client’s name and address
• The project name and address
• The contract date and relevant terms
• The invoice number(s) and amounts, including late fees
• A summary of payment attempts and communication to date
• A clear deadline for payment (typically 10 to 15 business days)
• A statement of the actions you will take if payment is not received (filing a lien, sending to collections, pursuing legal action)

Tips for Effective Demand Letters

• Send it certified mail with return receipt. This proves they received it.
• Stick to facts. No emotional language, no threats, no insults. Just the facts and the consequences.
• Be specific. Include exact amounts, dates, and contract references.
• Have your attorney review it. Even better, have them send it on their letterhead. A letter from an attorney gets taken more seriously than one from you.

A well-written demand letter resolves many collection cases on its own. The client realizes you are serious and that the cost of ignoring you is higher than the cost of paying.

Mechanic’s Liens: Your Strongest Tool

A mechanic’s lien is a legal claim against the property where you performed work. It is one of the most powerful tools available to contractors, and it exists specifically to protect people who improve a property but do not get paid.

How It Works

When you file a mechanic’s lien, it creates a cloud on the property title. The owner cannot sell or refinance the property until the lien is resolved. This gives you significant power because most property owners want a clean title.

Key Points About Mechanic’s Liens

• Deadlines are strict. Every state has specific deadlines for filing a lien, typically 60 to 120 days after your last day of work on the project. Miss the deadline and you lose the right entirely.
• Preliminary notices may be required. Many states require you to send a preliminary notice to the property owner before you can file a lien. Some require this at the start of the project, not when the dispute happens.
• You must enforce the lien. Filing a lien is not the end. You typically have 6 to 12 months to file a lawsuit to enforce it, or it expires.
• It works for subs and suppliers too. Mechanic’s lien rights are not just for general contractors. Subcontractors, material suppliers, and equipment lessors can file liens in most states.

When to Use a Mechanic’s Lien

File a lien when:

• The debt is large enough to justify the filing cost (usually $500 to $2,000 with attorney fees)
• You are within your state’s filing deadline
• You have proper documentation of the work performed and the amount owed
• Other collection efforts have failed

The threat of a lien is often enough to prompt payment. Mention it in your demand letter and follow through if necessary.

Collection Agencies vs. Attorneys

When informal collection fails, you have two main options for outside help: collection agencies and attorneys.

Collection Agencies

Best for: Smaller debts (under $10,000), situations where you do not need to file a lien, and when you want to hand off the hassle.

How they work: You assign the debt to the agency. They contact the debtor using phone calls, letters, and credit reporting. If they collect, they take a percentage (typically 25% to 50%).

Pros:

• No upfront cost (most work on contingency)
• They handle all the follow-up so you can focus on your business
• They can report the debt to credit bureaus, which motivates payment

Cons:

• You give up a significant portion of what is collected
• They cannot file liens or lawsuits (they are not attorneys)
• Some agencies use aggressive tactics that can reflect poorly on you

Construction Attorneys

Best for: Larger debts, mechanic’s lien situations, cases involving contract disputes, and situations where you may need to go to court.

How they work: You hire the attorney to send demand letters, file liens, negotiate settlements, or litigate. Some work on contingency, but most charge hourly or a flat fee for specific services.

Pros:

• They can file liens and lawsuits
• A letter on attorney letterhead carries more weight
• They understand construction law and your specific rights
• They can handle complex disputes involving multiple parties

Cons:

• Legal fees can be significant ($200 to $500+ per hour)
• Court cases take time, sometimes a year or more
• Even if you win, collecting on a judgment is a separate challenge

Which One?

A simple rule of thumb: if the debt is under $10,000 and there is no lien involved, try a collection agency first. If the debt is over $10,000 or you need to file a lien, go straight to an attorney.

Small Claims Court

For smaller debts, small claims court is a fast and affordable option. Every state has one, and the process is designed for people without attorneys.

Key Details

• Dollar limits vary by state. Most states allow claims between $5,000 and $15,000 in small claims court. Some go as high as $25,000.
• Filing fees are low. Typically $30 to $100.
• No attorney required. You represent yourself. Bring your contract, invoices, photos, and communication records.
• Fast resolution. Most cases are heard within 30 to 60 days of filing.

Tips for Small Claims Court

• Organize your evidence clearly. Judges appreciate contractors who come prepared.
• Bring copies of everything: the contract, all invoices, proof of delivery or completion, all written communication, and photos of the completed work.
• Be professional and stick to the facts. The judge does not care about your frustrations. They care about the contract and whether the work was done.
• If you win, you still need to collect. A judgment does not automatically put money in your pocket. You may need to garnish wages, place a lien on property, or levy bank accounts.

When to Write It Off

Not every debt is worth chasing. At some point, the cost of collection (in money, time, and stress) exceeds the amount you would recover.

Consider writing off a debt when:

• The debtor has no assets, has filed for bankruptcy, or has disappeared
• The amount owed is less than the cost of pursuing it
• You have spent months chasing it with no progress
• The dispute is complicated enough that even winning in court is uncertain
• The emotional toll is affecting your ability to run your business

Writing off a debt is not the same as giving up. It is a business decision. Talk to your accountant about claiming bad debt deductions on your taxes.

Learn from Every Bad Debt

Every unpaid invoice teaches you something. Maybe your contract was missing a critical clause. Maybe you did not check the client’s references. Maybe you waited too long to invoice or too long to follow up.

Use your job costing tools to track the true cost of bad debt on each project. When you can see the financial impact in black and white, it motivates you to tighten your processes for the next job.

Protecting Cash Flow During Collection

The worst part about unpaid invoices is not the money you are owed. It is the cash flow gap that happens while you wait. You still have to pay your crew, your suppliers, your rent, and your insurance regardless of whether your client pays you.

Here is how to protect your cash flow while you chase collections:

Build a Cash Reserve

Every construction business needs a cash reserve of at least two to three months of operating expenses. This is your buffer when clients pay late. If you do not have this yet, start building it now by setting aside a percentage of every payment you receive.

Diversify Your Client Base

If one client represents more than 25% of your revenue, you are exposed. When that client does not pay, it can cripple your business. Spread your work across multiple clients so that one bad debt does not sink you.

Invoice Promptly

Do not wait a week after completing work to send your invoice. Send it the same day if possible. The sooner you invoice, the sooner the payment clock starts. Set up your invoicing system to generate invoices automatically when milestones are marked complete.

Offer Multiple Payment Methods

Make it easy for clients to pay. Accept credit cards, ACH transfers, checks, and online payments. The fewer obstacles between the client and the “pay” button, the faster you get your money.

Consider Invoice Factoring

Invoice factoring is when a third party buys your outstanding invoices at a discount (typically 2% to 5%) and pays you immediately. They then collect from your client. This is not ideal for every situation, but it can be a lifeline when cash flow is tight and you have large receivables outstanding.

Set Up Systems That Prevent the Problem

The contractors who have the fewest collection problems are the ones with the best systems. When your contracts are tight, your invoicing is prompt, your documentation is thorough, and your client communication is consistent, most payment issues resolve themselves before they become collection cases.

Projul is built for contractors who want to get paid on time. From invoicing and payment tracking to job costing and client management, it gives you the tools to stay on top of your money so you spend less time chasing it.

Set up good systems now. Your cash flow will thank you later.