Improved vs. Unimproved Taxes: What New Construction Buyers Need to Know at Closing

Buying a brand-new home is exciting, but there's one closing detail that catches a lot of buyers off guard: how your lender collects property taxes into your escrow account. If you don't understand the difference between improved and unimproved taxes, you could be in for a surprise payment increase down the road. Here's how it works.

The Difference Between Improved and Unimproved Taxes

Property taxes are based on what the county assessor says your property is worth. With new construction, that value comes in two very different flavors:

Unimproved taxes are assessed on the land only, the vacant lot before the house was built. Because raw land is worth far less than land with a finished home on it, these taxes are low.

Improved taxes are assessed on the land plus the completed home. Once the assessor recognizes the finished structure, the assessed value jumps, and so does the tax bill.

The catch is timing. When you close on a new build, the county often hasn't reassessed the property yet. The most recent tax bill on file usually reflects only the unimproved (land-only) value.

How This Plays Out at Closing

At closing, your lender sets up an escrow (or impound) account to collect a portion of your annual property taxes with each monthly payment. The lender bases those collections on the tax figures available at the time.

Here's where new construction gets tricky. If the lender collects based on the unimproved land value, your monthly escrow will be set too low, because it's only funding for the vacant-lot tax bill, not the much higher bill you'll owe once the home is on the tax rolls.

Some lenders anticipate this and collect based on estimated improved taxes instead, using the home's value to project what the future bill will be. This builds a cushion into your escrow account so you're prepared when the higher bill arrives.

Why It Matters: Payment Shock

If your escrow was funded using unimproved taxes, everything looks fine at first. Then the county reassesses the property, typically the following year, and bills you for the full improved value. When that larger tax bill hits your escrow account, two things happen:

1. Your account comes up short (an escrow shortage), and you'll owe the difference.
2. Your monthly escrow payment increases going forward to cover the higher annual bill.

The result is a jump in your total mortgage payment, sometimes a significant one. This is often called payment shock, and it's the number-one reason new construction buyers are surprised by their escrow account in year two.

How It Works in Arkansas

Arkansas has a few rules that shape all of this:

• Taxes are paid in arrears. You pay in the current year for the prior year's assessment, with bills due October 15.
• Assessment date is January 1. Your property is valued based on its condition on January 1 of each year.
• New homes may not be assessed right away. If your home isn't complete on January 1, it's assessed only on the land value for that year. The improved value doesn't show up until the next January 1 assessment, and you won't be billed on it until the following year.
• Amendment 79 provides a homestead property tax credit and caps annual assessed-value increases on your primary residence, which can soften how quickly the improved value phases in.

Because of the arrears system and the January 1 assessment date, there's often a lag of a year or more between closing and when the full improved tax bill lands. That lag is exactly what creates the escrow gap if it isn't planned for.

The Flip Side: Over-Collecting and Extra Cash at Closing

Collecting on the fully improved value protects you from payment shock, but it can create a different wrinkle at the closing table. Here's the mismatch:

Say the lender needs to collect several months of taxes up front to fund your escrow account, for example nine months, and sets that amount using the anticipated improved tax figure. Meanwhile, the seller's tax proration credit is based on the last known bill, which is still the unimproved (land-only) amount. Because the seller is only crediting their share at the lower unimproved rate, the buyer has to make up the difference and may need to bring extra cash to closing.

That extra cash isn't lost. When your servicer runs its annual escrow analysis and sees the account holds more than it's allowed to, you'll typically receive a refund for the surplus. So the money comes back to you. It just may tie up funds for a while first.

This is also where federal rules come in. Under RESPA, lenders and servicers are required by law to hold no more than the federally mandated amount in your escrow account. The formula limits the cushion to roughly two months (one-sixth) of your annual tax and insurance payments, and servicers must analyze the account each year and return surpluses above the allowed threshold. In other words, even if extra money goes in at closing, the law caps how much can stay there.

What Buyers Should Do

The good news is this is entirely manageable when you know what to expect. A few smart moves:

• Ask how your lender is calculating the escrow: on the land-only value or the estimated improved value.
• Budget for a payment increase in year two if your escrow was set on unimproved taxes.
• Be ready for extra cash at closing if the lender escrows at improved rates while the seller only credits at unimproved rates, and know any surplus is refunded later.
• Get an estimate of the future improved tax bill so you can set money aside ahead of any shortage.
• Work with a broker who knows local assessment practices so nothing about your escrow catches you by surprise.

Understanding the improved-versus-unimproved distinction before you close means no unwelcome surprises when that first reassessed tax bill shows up. A little planning now saves a lot of stress later.

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If you're buying new construction in Northwest Arkansas and want to know exactly how your taxes and escrow will be set up, reach out. I'm happy to walk you through the numbers before you close.