You can finance a vacant lot in Arizona, but it is not a normal mortgage. Expect 20% to 50% down, a rate that runs a point or more above a home loan, and a shorter term that often ends in a balloon payment. A buildable lot with utilities at the street is far easier to finance than raw land. Here is how lenders look at land in Scottsdale, Phoenix, and the rest of Metro Phoenix, and what to check before you sign a purchase contract.

Raw land, improved lots, and why the label matters

Lenders sort land into buckets, and the bucket sets your down payment, your rate, and your odds. Raw land has no utilities and no improved road access. An improved lot has water, power, and a road at the lot line, or sits in a platted subdivision. A third path is to finance the lot and the house together in one construction loan.

The ranges below are typical, not guaranteed. Each bank and credit union writes its own rules, and a lot in Cave Creek will not be treated the same way as a lot in a finished Scottsdale subdivision.

A lot has no kitchen to live in and no house to resell. That is why the lender asks you to put in so much of your own money.

Why the down payment is so high

Lenders ask for a big down payment because land is the riskiest thing they finance. A borrower who loses a job will fight to keep the house they live in. Nobody fights that hard for a vacant lot. Land also sells slowly, and most lot loans are kept by the bank that makes them instead of being sold to investors, so the lender carries the whole risk.

Here is what the math looks like on a $150,000 lot. The numbers use a 9.00% rate as an illustration only. They are not a quote, and your rate will depend on your credit, your down payment, and the lot.

Now the part people miss. Many lot loans do not fully pay off over their term. A bank might amortize the loan over 20 years but call the balance due in five. On the $105,000 loan above, you would still owe about $93,142 at month 60. You would need to pay that in cash, sell the lot, or refinance into something else. If you cannot do one of those three, a balloon is a trap.

Water, access, and utilities: where lot deals fall apart

Water is the first question on any Arizona lot. Inside an Active Management Area, which includes the Phoenix area, new subdivisions generally need proof of an assured water supply, a 100 year supply under state law. You can read the statute at azleg.gov, A.R.S. 45-576. A lot outside that framework may rely on a well or a hauled water arrangement, and some lenders will not touch it. Our guide to Arizona water rules for new home construction walks through how that plays out.

Septic is the second question. If there is no sewer line, the lot needs a septic system that the county will permit, and a perc and soil evaluation can fail. Our breakdown of well and septic loan requirements in Arizona shows what lenders check on a finished home, and the same logic applies to a lot.

The third question is legal access. A lot with no recorded easement to a public road can be worth far less than the price, and a lender will not lend against it. Ask the title company for the recorded documents before you spend money on anything else. You can search recorded documents for Maricopa County at the Maricopa County Recorder.

Run your own numbers

Lot loan or construction-to-perm loan

If you plan to build, ask about one loan before you buy the lot. Buying the lot with one loan and then taking out a construction loan later means two sets of closing costs, two appraisals, and two approvals. A construction-to-permanent loan finances the land and the build together, pays the builder in draws, then converts to a regular mortgage when the house is done.

There is a case for the two-step path. If you already own the lot, or you can buy it for cash, the land counts as equity toward the down payment on the build. A $150,000 lot you own outright can cover much of the down payment on a $600,000 project, which is a real advantage. Our guide to construction loans in Arizona explains the draw schedule and the rate lock choices.

How lenders qualify you for land

Lenders qualify you the same way they qualify any borrower, then add a few land-specific questions. They check credit, income, and cash reserves, and they count the new lot payment against your debt-to-income ratio. Our guide to the debt to income ratio to buy a house in Arizona shows the limits.

Then they ask about the lot. What is it zoned for? Are there utilities, and how far is the nearest connection? What is your plan for the land, and when? Some lenders want to see building plans or a builder contract. Some want a minimum credit score in the high 600s or 700s. Every lender is different, and the answers can change the rate by a full point.

Other ways to pay for land

Not every lot is bought with a lot loan. If you own a home with equity, a cash-out refinance or a home equity line can fund the purchase, and the rate is usually lower than a lot loan. The cost is that your house becomes the collateral for the lot. Seller financing is another route, and our guide to seller financing and owner carryback in Arizona explains how those deals work and where they go wrong.

Be careful about tax assumptions. A vacant lot is generally not a qualified home, so the mortgage interest deduction usually does not apply to a lot loan. The IRS explains the rules in Publication 936, and a tax preparer can tell you how they apply to you.

What to know about lots in the Valley

Lot prices vary widely across Metro Phoenix, and the best way to get a feel for them is to look at current listings. The Homes.com Phoenix housing market report shows where the broader market stands, and Arizona Luxury Property Search lists high-end homes and land in Scottsdale and nearby communities. If your lot is part of a bigger plan to build a custom home, the loan programs page shows the options we shop, and our process page shows what to expect from application to closing. You can also start at pillarmortgagegroup.com.

The Consumer Financial Protection Bureau has a plain-language owning a home resource that is worth reading before you sign any loan documents, including a lot loan.

Frequently asked questions