Contract Guide
By Phazahn Odom | Founder of Phixmo | Former bookkeeper for residential GCs | Former NFL tight end, Pittsburgh Steelers
A handshake and a verbal agreement is how contractors end up in disputes, doing unpaid work, and arguing over what was promised. A solid written contract is your protection: it defines the work, the price, the schedule, and what happens when things change. It's the document you're grateful for when a project goes sideways.
After years of doing the books for residential GCs and seeing how disputes unfold, here's what every residential construction contract should include to protect you. This is educational information, not legal advice. Have an attorney review your contract template for your state.
Educational information, not legal advice
Construction contract law varies by state, and your situation is specific. This guide explains what residential contracts generally include, but it isn't legal advice. Have a qualified attorney review your contract template for your state before you use it.
A clear contract prevents disputes and protects you when they happen anyway.
When the scope, price, and schedule are in writing, both you and the homeowner know exactly what was agreed. Most disputes come from mismatched expectations, and a clear contract eliminates them.
If a dispute escalates, the contract is the document that determines who's right. A vague or missing contract leaves you exposed; a clear one protects you.
A proper contract signals that you run a real business. It builds homeowner trust and sets a professional tone for the project.
Clear payment terms and a documented scope are what let you enforce payment. Without them, collecting can be difficult.
Operating without solid contracts is one of the biggest unnecessary risks a contractor takes.
The essential components of a residential construction contract.
Your business name and license number, the homeowner's name, and the property address. Clear identification of who's agreeing to what and where the work happens.
A detailed description of exactly what you’ll do. This is the most important section for preventing disputes. Be specific: what’s included, what materials, what finishes. Vague scope leads to "but I thought that was included" arguments.
Explicitly state exclusions. What the homeowner is responsible for, what’s outside the scope, what would require a change order. Naming exclusions prevents assumptions.
The total price and a clear payment schedule. When payments are due (deposit, milestones, completion), how much each is, and acceptable payment methods. Tie payments to progress milestones so you’re not floating the whole job.
Start date, estimated completion, and major milestones. Include language about how delays (especially homeowner-caused or weather-caused) affect the timeline.
How changes to the scope will be handled: documented, priced, and approved in writing before the work is done. This clause is critical for protecting your margin on the inevitable changes.
What you warrant and for how long. Set clear, reasonable warranty terms so expectations are defined.
What happens if either party needs to end the contract, and how disputes will be resolved. This protects both sides if the relationship breaks down.
Beyond the basics, these clauses are where contractors protect themselves.
State clearly that any change to the scope requires a written, approved change order before the work proceeds, and that changes affect the price and possibly the schedule. This is the single most important protective clause, because undocumented changes are where contractors lose the most money.
Structure payments so you're paid as you progress, not all at the end. This protects your cash flow and limits how much you're floating at any time. Include consequences for late payment.
Language stating that delays caused by the homeowner, weather, permit issues, or other factors outside your control extend the timeline and may affect cost. This protects you from being penalized for delays you didn't cause.
For items the homeowner will select (fixtures, finishes), use allowances with clear language that selections above the allowance increase the price. This prevents being squeezed when the homeowner picks expensive finishes.
Language allowing you to pause work if payments aren't made, protecting you from continuing to invest labor and materials while unpaid.
Define what you warrant and for how long, and exclude things outside your control (homeowner misuse, normal wear, work by others). Open-ended warranty exposure is a risk.
The change order clause is the one that pays for itself. Change order best practices covers how to enforce it on every job.
The errors that get contractors into trouble.
The number one mistake. A scope that’s unclear or incomplete leads to disputes about what was included. Be specific.
Without a clear change order clause and process, scope changes become arguments and unpaid work. This is where the most money is lost.
Payment all at the end, or vague payment timing, leaves you floating the job and struggling to collect. Tie payment to milestones.
Failing to state what’s not included invites the homeowner to assume things are covered that aren’t.
A contract pulled off the internet may not comply with your state's laws or protect you adequately. Have an attorney review your template.
Beginning work before the contract is signed leaves you unprotected. Get the signature first.
The right platform makes professional contracts and the critical change order discipline automatic.
A good system generates a branded contract from your estimate (so the contract matches what you bid), gets it signed electronically before work starts, and enforces a change order process that requires customer approval before billing. This turns the protective practices into the default way you operate.
Phixmo does exactly this. Generate a branded contract from your estimate, send it for e-signature, and start work only once it's signed. When changes come up, the change order workflow requires the homeowner to approve before you invoice, enforcing the most important protective practice automatically. Every contract and change order is documented, dated, and recorded.
The protections in this guide only help if you actually use them on every job. Software that builds them into your workflow is what makes that happen.
Yes. Even small jobs benefit from a written contract. It defines expectations, protects you legally, and establishes professionalism. Verbal agreements are where disputes and unpaid work come from.
The scope of work and the change order clause. A clear, detailed scope prevents most disputes. A strong change order clause protects your margin on the inevitable changes. Together they prevent the most common and costly problems.
A template can be a starting point, but have an attorney review it for your state's laws and your specific needs. Generic templates may not comply with local requirements or protect you adequately. Construction contract law varies by state.
A strong change order clause that requires written, approved change orders before any out-of-scope work, plus clear exclusions and allowances in the contract. Enforce the change order process on every change, no matter how small.
No. This is educational information about what construction contracts generally include. Contract law varies by state and your situation is specific. Have a qualified attorney review your contract template and advise you.
Educational information, not legal advice
Construction contract law varies by state, and your situation is specific. This guide explains what residential contracts generally include, but it isn't legal advice. Have a qualified attorney review your contract template for your state before you use it.