What should be included in a custom home builder contract?

A custom home builder contract in Arizona must be in writing and must contain a specific set of terms set by state law. Under A.R.S. 32-1158, the contract has to include the contractor's name, business address, and license number, the owner's name and the jobsite address or legal description, the date you signed, the estimated completion date, a description of the work, the total dollar amount including all taxes, the amount of any advance deposit, and the dollar amount and timing of each progress payment. The statute also requires the owner's right to file a complaint with the Registrar of Contractors to be shown "in at least ten-point bold type." Those are the legal minimums. A strong contract goes further and nails down allowances, change orders, the schedule, and the warranty, so both sides know exactly what was promised.

The terms Arizona law requires

Arizona law requires nine specific items in a residential construction contract, and a contract missing them is not compliant. A.R.S. 32-1158 lists each one, and it applies to a custom home build whether the price is fixed or cost-plus.

The statute requires:

• The contractor's name, business address, and license number. Verify the license is active with the Arizona Registrar of Contractors before signing.
• The owner's name and mailing address, and the jobsite address or legal description. On raw land, the legal description identifies the exact parcel.
• The date the parties entered into the contract.
• The estimated date of completion of all work under the contract.
• A description of the work to be performed.
• The total dollar amount to be paid "including all applicable taxes."
• The dollar amount of any advance deposit paid or scheduled.
• The dollar amount of any progress payment and "the stage of construction at which the contractor will be entitled to collect" it.
• The owner's right to file a complaint with the Registrar, with the Registrar's contact information, "prominently displayed in the contract in at least ten-point bold type."

If a contract handed to you is missing any of these, treat it as a red flag. A licensed Arizona builder knows these requirements. A document that skips them suggests the person either is not licensed or is not following the rules that protect you.

The payment schedule and deposit limits

Your contract must state the total price, any deposit, and the exact stage of construction that triggers each progress payment, so money is tied to work completed. A.R.S. 32-1158 requires both the deposit amount and "the dollar amount of any progress payment and the stage of construction at which the contractor will be entitled to collect progress payments."

This protects you from paying too far ahead of the work. A sound schedule ties each draw to a milestone you can see: foundation poured, framing complete, drywall hung, final inspection passed. You should never owe a large share of the price before matching work is in the ground. Spell out the milestones plainly so there is no argument about whether a payment is due.

Be cautious with large up-front deposits. A modest deposit to reserve a start date and order long-lead materials is normal. A demand for a big chunk of the total before work begins is not. Match the money to the progress, and keep the final payment large enough that the builder is motivated to finish punch-list items and pass the final inspection.

For a cost-plus contract, the payment section should also state how the builder's fee is calculated and what documentation backs each billing. For a fixed-price contract, it locks the milestone amounts. Either way, the contract must show the total and the schedule in writing, per A.R.S. 32-1158. Keep a signed copy with every change order attached, so the paper trail stays complete from the first draw to the final payment.

The details that prevent disputes

Beyond the legal minimums, a good custom home contract spells out allowances, change orders, the schedule, and the scope in detail, because that is where most disputes start. The statute sets the floor. These terms keep a year-long project from going sideways.

Put these in writing:

• Allowances. An allowance is a budgeted dollar amount for an item you have not picked yet, like flooring or cabinets. List each allowance and what happens if your choice costs more or less. Realistic allowances stop a budget from creeping during the build.
• Change orders. A change order is a written, signed change to the scope or price. Require that every change be in writing and priced before work proceeds. Verbal changes are how costs and tempers blow up.
• The schedule. The contract names an estimated completion date, but add detail: major milestones, who is responsible for delays, and what happens if weather or a permit holdup pushes the date. Arizona's monsoon season and busy city permit offices both cause real delays.
• Plans and specifications. Reference the exact set of approved plans and a specification list by date or version, so "the work" is fully defined and cannot be quietly downgraded.
• Warranty. State the builder's warranty terms, what is covered, and for how long. A common structure is one year on workmanship and longer coverage on major structural systems.

The clearer these are at signing, the fewer fights you have during construction. Vague terms favor whoever wrote them. Specific terms protect both sides equally.

Why the license number and complaint language matter

The license number and the ROC complaint language are in your contract for a reason: they are your enforcement rights if the work goes wrong. A.R.S. 32-1158 requires both, and they connect directly to Arizona's contractor protection system.

First, the license number. A.R.S. 32-1151 makes it "unlawful" for any person "to engage in the business of" or "act in the capacity of a contractor without having a contractor's license in good standing." A custom home builder must hold the B General Residential Contractor license to build your home legally. The number in the contract lets you confirm the license is active with the Arizona Registrar of Contractors and check for past complaints before you sign. Hiring an unlicensed person voids the protections below.

Second, the complaint language. The statute requires the contract to prominently display your right to file a complaint with the Registrar. That matters because a licensed contractor must carry a bond, and Arizona homeowners who hire licensed contractors can file ROC complaints and may reach the state's recovery fund if a licensed builder fails to perform. Those rights exist only when you hire a licensed contractor, which is why confirming the license is the first thing to do.

A custom home is likely the largest contract you will ever sign, so read it line by line and make sure every required term is present and every important detail is spelled out. At Jematell Homes we put the full scope, allowances, schedule, payment milestones, and warranty in writing, with our active B license number on the contract, so you know exactly what you are getting before construction starts. If a term is unclear, ask for it in writing before you sign, not after.

The Jematell Homes approach

Transparency, a real license, and a written scope are how we work. Every project is different, so we will confirm the specifics for your parcel and budget with you directly.

Sources

• A.R.S. 32-1158 (Contract requirements; provision of documents)
• A.R.S. 32-1151 (Engaging in contracting without license prohibited)
• Arizona Registrar of Contractors (License Classifications)