Why Did My Property Taxes Go Up So Much on My New Construction Home in Texas? (2026 Guide)

Why Did My Property Taxes Go Up So Much on My New Construction Home in Texas? (2026 Guide)

By Nitin Gupta, CRS, GRI — Broker Associate, Competitive Edge Realty | 480+ transactions · 300+ new construction closings · $250M+ career volume

Quick answer: When you buy a brand-new home in Texas, your first-year tax bill is often based on the land only — because the county appraisal district values property as of January 1, and your house may not have been finished (or on the tax roll) yet. Once the completed home is reassessed at its full value, your bill can jump dramatically — and if your escrow was set on the low land value, your monthly payment jumps too. Three things shape what you actually pay: how your escrow is set up, your homestead exemption, and a tax proration credit you can recover from the builder. Here's how each works, with numbers.

How new construction gets taxed in Texas

Texas county appraisal districts assess every property as of January 1 each year. That single date drives the whole story for a new build:

• If your home was not complete and on the tax roll by January 1, the county typically taxes only the land (the "unimproved" value) for that year. Your first tax bill is low. The full "improved" value — land plus the finished house — shows up the following year, and that's when the bill jumps.

• If your home was finished and on the roll by January 1, you may be taxed on the full value from year one.

So the "why did my taxes explode" surprise usually isn't an error — it's the built-in gap between a first year taxed on dirt and a second year taxed on a finished house. Knowing which situation you're in before you close is the whole game.

Your escrow choice at closing: land value vs. finished value

Your lender collects estimated property taxes each month in an escrow (impound) account, and how that estimate is set is where new-construction buyers get burned:

• Escrow set on the unimproved (land-only) value. Your monthly payment starts low, because escrow only collects taxes on the land. The catch: when the county reassesses at the full value, your escrow account comes up short. Your servicer then bills you for the shortage and raises your monthly payment to cover both the shortfall and the higher ongoing taxes. That combination is the "year-two payment shock."

• Escrow set on the estimated improved (finished) value. Your payment is higher from the start but reflects what you'll actually owe, so you avoid — or greatly reduce — the year-two spike.

What to do: ask your lender directly, "Is my escrow set on the land value or the estimated finished value — and what will my payment be once the home is fully assessed?" Get that second number, and ask whether you can escrow on the finished value (or add a voluntary deposit) to smooth it out. Your lender's policy matters here, so confirm the specifics with them.

How your homestead exemption lowers the bill

If the home is your primary residence, the Texas general residence homestead exemption removes a large chunk of your home's value from school-district taxes — the biggest single piece of most Texas tax bills. In November 2025, Texas voters approved Proposition 13, raising that exemption to $140,000 (up from $100,000), applying to the 2025–2026 tax year and beyond.

A few things new-construction buyers should know:

• The exemption applies to school-district taxes specifically; your city and county may add their own optional homestead exemptions on top.

• Texas now generally lets you file in the year you purchase — you no longer have to wait until the next January 1.

• You file with your county appraisal district, and it's free — never pay a service that offers to file it for you.

• Once you qualify, a 10% homestead cap limits how much your assessed value can rise each year afterward — valuable protection in a fast-appreciating market.

Confirm your exemption amounts and eligibility with your county appraisal district, since city and county exemptions vary and the rules can change.

The builder tax credit most buyers never claim

Here's the part that's easy to leave money on the table. At closing, the year's property taxes get prorated between the builder and you: the builder owes the taxes for the part of the year they still owned the property (January 1 up to your closing date), and you owe the rest.

But because the finished-home tax bill usually isn't available yet at closing, that proration is often estimated on the low land value — so the credit the builder gives you at the closing table is small. Once the actual bill is issued on the full improved value, you can go back to the builder and ask them to "true up" their share — to pay you the difference so their January-1-to-closing portion is calculated on the value you're actually taxed on.

How the title company fits in: your title company orders a tax certificate from the county showing the property's current assessed value and tax status, and prorates from it. If that certificate already reflects the improved value and the tax on it, your closing credit is accurate — no true-up needed. If it still shows only the land value (common for early-year closings before the roll is certified), your credit is low, and you make up the difference with the builder when the improved-value bill arrives. Ask your title company what value the tax certificate reflects.

To claim your credit: keep your closing (settlement) statement and the final tax bill, watch for the bill (usually issued in October or November), calculate the builder's share on the finished value, and submit a written request to the builder's closing or warranty contact — looping in your title company to help. A buyer's agent who knows this process will flag it for you.

Putting real numbers to it (hypothetical)

Say your finished home is valued at $500,000, the lot alone at $50,000, with a 2.25% combined tax rate (round numbers, just to show the mechanics — your actual figures will differ):

Stage	Approx. annual tax	Approx. monthly
Year 1 — taxed on the lot only ($50,000)	~$1,125	~$94
Full value, no homestead ($500,000)	~$11,250	~$938
Full value, with the $140,000 homestead exemption	~$9,780	~$815

• The homestead exemption (at an illustrative ~1.05% school rate) saves roughly $1,470 a year here.

• If your escrow was set on the lot value, expect a hard catch-up once the full bill hits — the shortage repaid on top of the higher ongoing taxes.

• On a mid-year (say June 30) closing, the builder credits you only about $560 at closing (figured on the lot), but their true half on the finished value is about $5,625 — so once the bill is issued, you could ask the builder to true up roughly $5,000.

These figures are illustrative; your lender, title company, and county appraisal district will have your actual numbers.

Frequently asked questions

Why did my property taxes go up so much after buying a new construction home in Texas? Because Texas assesses property as of January 1. If your home wasn't finished by that date, year one is often taxed on the land only, and the full finished-home value — a much larger bill — hits the following year. If your escrow was set on the low land value, your monthly payment jumps too.

Is my new construction home taxed on the land or the full value the first year? It depends on whether the home was complete and on the tax roll as of January 1. If it wasn't, you're likely taxed on the land only for year one, with the full value following the next year. If it was, you may be taxed on the full value from year one.

How much is the Texas homestead exemption in 2026? Texas voters approved Proposition 13 in November 2025, raising the school-district homestead exemption to $140,000 (from $100,000), effective for the 2025–2026 tax year. Cities and counties may add their own optional exemptions. Confirm amounts with your county appraisal district.

Can I get a property tax credit back from the builder? Yes. At closing, taxes are prorated between the builder (January 1 to closing) and you. If that proration was figured on the low land value, you can ask the builder to true up their share once the finished-home tax bill is issued. Keep your closing statement and the tax bill.

Should I escrow my new-construction taxes on the land value or the finished value? Escrowing on the land value keeps your payment low at first but risks a large year-two catch-up when the home is reassessed. Escrowing on the estimated finished value costs more now but keeps your payment steady. Ask your lender which basis they use and whether you can escrow on the finished value.

When should I file my homestead exemption on a new build? Texas generally lets you file in the year you purchase, once the home is your primary residence — you no longer have to wait until the next January 1. File Form 50-114 with your county appraisal district; it's free.

Buying new construction in DFW? Let's protect your money.

These are exactly the details I walk every new-construction buyer through — before they close, not after. With 300+ new construction closings, I represent you against the builder, review the contract, and make sure your escrow, exemptions, and builder credit all work in your favor.

Nitin Gupta, CRS, GRI — Broker Associate, Competitive Edge Realty Contact Nitin · 469-269-6541 · How Nitin represents buyers · Best home builders in DFW · Complete guide to buying in DFW

This article is educational and reflects general information as of the date published. Tax laws, exemption amounts, escrow rules, and lender policies can change and vary by situation. Nitin Gupta is a licensed REALTOR®, not a lender, attorney, or tax advisor. Confirm escrow with your lender, contract and proration terms with your title company, and tax and exemption specifics with a qualified tax professional and your county appraisal district.