What are construction loan requirements in Arizona?

A construction loan in Arizona is a short-term loan that pays for building a home, and lenders hold it to a higher bar than a normal mortgage. To qualify, most lenders want a credit score near 680 or higher, a down payment of 20 to 25 percent of the project cost, a signed contract with a licensed builder, a complete set of plans, a line-item budget, and an appraisal of the home as it will be when finished. The loan does not hand you the full amount at closing. It releases money in stages, called draws, as each phase of construction passes inspection. Because there is no finished house to secure the loan yet, the lender takes on more risk, so the paperwork is heavier and the terms are stricter.

Below is what each requirement means in plain terms, the real numbers Arizona lenders use, and the local rules that trip people up in Maricopa and Pinal County.

What credit, income, and down payment lenders require

A construction loan needs stronger credit and more cash up front than a standard home purchase. Lenders treat a half-built house as risky collateral, so they screen the borrower harder. Most Arizona lenders look for a credit score around 680 or higher, though some go lower with a larger down payment. They also check your debt-to-income ratio, the share of your monthly income that goes to debt payments, and usually want it under about 43 percent.

The down payment is the part that surprises people. A typical construction loan asks for 20 to 25 percent of the total project cost, which includes both the build and often the land. On a $700,000 project, that is $140,000 to $175,000 in cash or land equity. If you already own the lot free and clear, lenders often let that equity count toward the down payment, which can cut the cash you need at closing.

Expect to document income the same way you would for any mortgage: two years of tax returns, recent pay stubs, W-2s or business records if you are self-employed, and bank statements showing reserves. Lenders want to see cash reserves beyond the down payment, often several months of payments, because building a home rarely goes exactly to plan.

One more cost factor: rates. Construction loans carry higher interest rates than long-term purchase mortgages, as the CFPB notes, because the lender is funding an unfinished asset. Rates move with the wider market, so check a current benchmark like the Federal Reserve's H.15 release and confirm the actual rate with your lender before you budget.

The builder, plans, and budget the lender must approve

The lender approves your builder and your plans, not just you. A construction loan funds a specific project, so the lender needs proof that the project is real, buildable, and priced correctly. That means three documents are non-negotiable: a signed construction contract, a full set of plans, and a detailed cost breakdown.

Your builder almost always has to be a licensed Arizona contractor. The home-building license class is B, the General Residential Contractor license issued by the Arizona Registrar of Contractors. Lenders verify the license is active and in good standing before they fund. They may also review the builder's experience, references, and financial stability, because a builder who walks off the job mid-project is the lender's problem too.

The plans and budget have to match. Lenders require:

• Complete construction plans stamped or prepared to local code, ready to permit.
• A line-item budget, sometimes called a cost breakdown or schedule of values, covering every phase from site work to final finishes.
• A draw schedule that ties each release of money to a completed stage of work.
• A builder contract stating the fixed or guaranteed price, the timeline, and what happens if costs run over.

If your budget has no cushion, ask about a contingency line, usually 5 to 10 percent of the build cost, to cover surprises like rock excavation or a code change. Lenders prefer to see one built in.

How the appraisal and draw schedule work

A construction loan is appraised on the finished home, not the empty lot. The appraiser uses your plans, specs, and budget to estimate what the completed house will be worth, then the lender lends against that future value. If the appraisal comes in below your total cost, you have to cover the gap with more cash or shrink the scope. This is the most common reason a construction loan stalls, so price your finishes realistically before you apply.

Money is released through a draw schedule, a set list of payments tied to construction milestones. The CFPB describes this directly: the money from a construction loan "is typically provided in a series of advances as the construction progresses." A common Arizona draw schedule releases funds after the foundation, framing, dry-in, mechanicals, drywall, and final completion. Before each draw, the lender sends an inspector or appraiser to confirm that stage is actually done. You can read a fuller breakdown on our draw schedule glossary entry.

During construction you usually pay interest only, and only on the money drawn so far, not the full loan amount. Federal rules under Regulation Z, Appendix D, set out how lenders disclose interest on these multiple-advance loans. Payments often do not start right away. The CFPB notes that on some construction loans, "payments sometimes start six to 24 months after the loan is made." Once the home is done, the loan either converts to a permanent mortgage or has to be paid off and refinanced.

Arizona-specific rules and the owner-builder option

In Arizona, who builds the home changes your requirements. If you hire a licensed B-class contractor, the lender deals with a known party and the process is standard. If you want to act as your own builder, the rules shift, and so does the loan.

Arizona law lets you build your own home without a contractor license under the owner-builder exemption in A.R.S. 32-1121. The statute exempts owners who build a structure "intended for occupancy solely by the owner" and "not intended for sale or for rent." There is a catch built into the law: if you sell or rent the home within one year of completion or the certificate of occupancy, that is treated as "prima facie evidence" the project was built to sell, which voids the exemption. So the owner-builder path is for a home you plan to live in, not a flip.

Owner-builder construction loans are harder to get and a smaller pool of lenders offer them, because the lender loses the safety net of a vetted professional builder. Expect a larger down payment, more scrutiny of your construction experience, and sometimes a required construction manager.

Two more local points. First, the lender you use must be licensed to lend in Arizona, which the Arizona Department of Insurance and Financial Institutions (DIFI) oversees through the NMLS system. Second, your plans must meet the building code of the city or county where you build, and editions vary: Scottsdale uses the 2021 I-codes, Phoenix moved to the 2024 Phoenix Building Construction Code, and unincorporated Maricopa County (which covers Rio Verde) uses the 2018 I-codes. The lender will not fund a project that cannot get permitted, so confirm your plans match local code before you apply.

Construction loan terms, rates, and credit overlays change often and vary by lender. Confirm the current rates, down payment, and exact requirements with an Arizona-licensed lender before you commit to a budget.

The Jematell Homes approach

Clear allowances and an honest cost breakdown are how we start every custom home. If you are planning a custom home in Scottsdale, Rio Verde, or the greater Phoenix metro, we are happy to walk through your project.

Sources

• CFPB: What is a construction loan?
• CFPB: Appendix D to Part 1026 (Multiple-Advance Construction Loans)
• A.R.S. 32-1121 (Persons not required to be licensed; owner-builder exemption)
• Arizona DIFI: Mortgage Lending Licensing
• Federal Reserve: H.15 Selected Interest Rates