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Understanding Property Taxes: New Construction vs. Existing Homes
Reviewed by Daniel Ortiz · Senior Property Tax Consultant · Last reviewed September 2026
A new home and an existing home at the same price can carry very different tax bills, especially in the first two years. The difference comes from timing: when the house is valued, what was standing on that date, and which limits apply to you. The rules below are Texas rules; other states differ.
How Property Taxes Are Assessed on a New Construction Home
Texas appraisal districts value property as of January 1. Whatever was on the lot that day is what gets taxed for the year.
Lot only on January 1. If construction hadn’t started, the year’s value is the land.
Partly built on January 1. The house is valued at its stage of completion that day.
Finished on January 1. The district values the completed home at market value, usually using sales of similar new homes in the same subdivision, including builder sales.
Why Property Taxes Are Higher on New Construction
Most new construction buyers close on a home that was only a lot, or partly built, on the previous January 1. The first tax bill reflects that lower value. The next January 1, the district values the finished home. That second bill is often several times the first, and it’s the one that catches people off guard.
Two things make it worse:
Escrow built on the first bill. If your mortgage escrow was set from the lot-only bill, the second-year bill creates a shortage, and your monthly payment goes up.
No homestead cap in the first year. The 10% cap on homestead increases doesn’t start until the year after you first qualify. The jump from lot to finished home isn’t capped.
How to Estimate Property Taxes on New Construction
Start with the price you paid. Subtract the homestead exemptions you’ll qualify for: $140,000 from school district taxes, plus any city or county exemption. Then multiply by the combined tax rate for your address.
Example: a $400,000 home with a combined rate of 2.2%, half of it school tax. School tax applies to $260,000 after the $140,000 exemption: $260,000 × 1.1% = $2,860. The other units tax the full $400,000: $400,000 × 1.1% = $4,400. Estimated total: about $7,260 a year, before any city or county homestead exemption.
Who Pays Property Taxes on New Construction
The tax for the year you buy is usually split at closing. The builder or seller credits you for their share of the year, and you pay the full bill when it comes due on January 31. If the credit was based on the lot-only value, it won’t cover the next year’s bill. Check your closing statement for the proration.
How Existing Homes Are Assessed
An existing home is valued every year at market value, from sales of similar homes nearby. Texas doesn’t reassess at sale the way some states do: the value doesn’t jump because the home sold.
What does reset at sale is the homestead cap. If the seller had a capped value well below market value, the cap ends after the year of the sale. Your first full year can bring a large increase even though the market didn’t move.
New Construction vs. Existing Homes: The Tax Side
New construction. Lower first bill, much higher second bill, valued from builder sales in a subdivision that’s still filling in. Plan your escrow for the finished value.
Existing homes. Value follows neighborhood resales. Look at the seller’s market value, not their taxable value, because a capped value won’t carry over to you.
Both. Apply for the homestead exemption as soon as you own and live in the home. Protest the value every year.
Be Watchful of Incorrect or Inaccurate Evaluations
New homes are especially prone to record errors: the wrong square footage from plans, upgrades that weren’t installed, a pool counted before it was built, or a lot size from the original plat. Check the property record the day your notice arrives. Errors are the easiest reductions there are.
This article is general information about Texas property tax, not legal advice. Rules and deadlines can change with each legislative session.
New Construction Property Tax FAQs
Does new construction always have higher taxes?
Not always in the first year, which is often based on the lot. Usually in the second year, when the finished home is valued for the first time and the homestead cap hasn’t started yet.
Do property taxes increase when a home is sold?
In Texas, a sale doesn’t trigger a reassessment. But the seller’s homestead cap ends, so a home with a capped value can see a large jump in the buyer’s first full year.
Can I appeal a property tax increase?
Yes. In Texas, the deadline is May 15, or 30 days after the notice is mailed, whichever is later.
Do new construction homes get reassessed after they are completed?
Yes. The district values whatever is there on January 1. The first January 1 after completion is when the full home appears on the tax roll.
Why are property taxes on new homes sometimes higher than expected?
Because the estimate at closing was based on the lot or a partly built house. The bill on the finished home comes a year later.
Are property taxes lower on older homes?
Sometimes, when the home is in worse condition or the neighborhood sells for less. Age alone doesn’t lower the value.
How long does it take for property taxes to adjust after buying a home?
In Texas, the next January 1. For a new home, that’s when the finished value appears. For an existing home, it’s when the seller’s cap ends.
Do property improvements increase property taxes?
Yes. Additions, pools, and major renovations add value, and new improvements aren’t limited by the homestead cap.
Can a newly built home qualify for property tax exemptions?
Yes. The homestead exemption applies once you own the home and live in it as your primary residence. You can apply as soon as you qualify.
Why did my property tax bill go up even though tax rates stayed the same?
Because the value went up, the cap reset after a purchase, or an exemption dropped off. Check your notice for all three.
Are property taxes based on purchase price or market value?
Market value as of January 1. The purchase price is strong evidence of market value, but the district isn’t bound by it.
What evidence helps when appealing a property tax assessment?
Sales of similar homes near January 1, photos and repair estimates, and corrections to the property record, such as square footage or upgrades that were never installed.
What happens if I don’t agree with my property tax assessment?
File a protest by the deadline. If the informal meeting doesn’t resolve it, the Appraisal Review Board hears your case. After that, binding arbitration or a lawsuit is available.
Bought New? Check the Second-Year Value.
We protest new construction values every year, starting with the year the finished home first hits the roll. No savings, no fee.