Property Tax on New Construction in Texas: First-Year Surprises

Property tax on new construction in Texas is based on the appraisal district’s value of the property on January 1 and the combined rates of every local taxing unit. Because a new home may be unfinished on that date, the first bill can be lower than later ones, so budget using the completed value.

How the system works

Texas has no state property tax or personal income tax. Instead, county appraisal districts estimate market values, and each taxing unit, such as the county, city, school district and any special district, sets its own rate. Your annual bill is roughly taxable value multiplied by the combined rate. The Texas Comptroller’s property tax pages explain the roles of appraisal districts, taxing units, protests and exemptions.

The January 1 effect

Appraisal is as of January 1 each year. That produces common patterns for a new build:

Situation on January 1	What may be assessed
Vacant lot, home not started	Land value only
Home partly built	Land plus the portion completed
Home finished	Full market value
Home sold and occupied mid-year	Prior value, with taxes prorated at closing

When you buy, the title company will prorate taxes for the year, but the next bill may be much higher than the one the seller paid. Lenders typically set escrow using the earlier figure, then adjust, which can raise your monthly payment after the first year.

Key takeaway: Do not budget from the seller’s last tax bill. Estimate tax from the likely completed value and the current combined rate for your address.

How to estimate a realistic bill

1. Find the home’s parcel on the county appraisal district website and list the taxing units.
2. Collect each unit’s current rate, typically published per $100 of value.
3. Estimate taxable value: close to your purchase price for a new home, less any exemptions.
4. Multiply and add them up.
5. Compare to the builder’s quoted estimate and ask why they differ.

Special districts can add materially; see the MUD tax guide. Money-site calculators can help with the arithmetic, for instance the calculators on Property Developments, but you should input rates from the county, not defaults.

Exemptions

A homestead exemption can reduce taxable value for your primary residence, and additional exemptions exist for seniors, disabled persons and veterans. You must apply with the appraisal district, and deadlines and amounts change, so check the Comptroller’s exemption page. Investors cannot claim homestead on rental properties, which matters if you are weighing the investment route.

Protesting a value

If you think the appraisal is too high, you can protest to the county appraisal review board. A new build purchased recently at a documented price is a useful starting point, though the appraisal process considers comparable values and other evidence. Deadlines are strict, so read the notice you receive and respond on time.

Comparing cities

Tax rates and appraisal practices differ across counties, and a home at the same price can carry a very different bill in different jurisdictions. When you compare projects, such as those in San Antonio and Dallas, request the tax estimate for each parcel rather than relying on a metro average. Listing pages seldom show tax details, so ask the seller or an agent.

Budget checklist

• The combined rate by taxing unit
• Estimated taxable value on completion
• Homestead exemption eligibility and application date
• Special-district notices
• Insurance quotes for the exact home
• A reserve for the year-two increase

If you plan the first year around a higher completed-value estimate, a tax step-up will not derail the budget. For wider context on buying, read the new-build buyer overview.

A worked example in words

Consider a buyer who closes on a new townhome in the spring. On January 1 of that year, the building was half finished, so the appraisal district valued the property at land plus half of the improvement. The tax bill for that year, which arrives in the autumn, reflects that lower figure, and the title company prorated the year’s tax between seller and buyer at closing. The following January, the townhome is complete and occupied, and the appraisal district now values it near its sale price. The next bill is therefore based on a much higher value. If the buyer’s lender set the mortgage escrow using the first bill, the escrow account will be short and the lender will raise the monthly payment. This pattern is common enough that a sensible buyer plans for it from the start.

Rates versus values

Two things can raise your bill: the appraised value and the tax rate. Texas law limits how fast the appraised value of a homestead can rise year to year for owners who have the exemption, but the limit generally applies only after the first year of ownership with the exemption and does not apply to non-homestead properties in the same way. Ask the Comptroller’s materials or your appraisal district how the caps work today, since the rules have been revised in recent years. Rates are set by each unit after public hearings, and voters can sometimes trigger an election if a rate rises above a limit.

Investors should note that non-homestead property is treated differently, and that cap rules differ. If you are weighing a rental purchase, use conservative tax assumptions, and see the details in the Comptroller’s guidance linked in the sources.

Who pays the tax at closing and after

At closing the title company prorates the year’s tax between buyer and seller. If your mortgage includes escrow, the lender collects a monthly portion with your payment and pays the tax bill when due, usually by the end of January. If you have no escrow, you pay directly, and penalties apply for late payment. Keep your tax account number and watch for notices from the appraisal district, which are sent in the spring with the proposed value and the protest deadline. A change of mailing address after closing is a common cause of missed notices.

Where to look for local specifics

The Texas page on Property Developments gives project-level information such as city, status and price range. It does not give parcel-level tax figures, so a buyer should use the county appraisal district for those. For Dallas County properties and Bexar County properties, the respective appraisal districts publish search tools and rate tables. The Dallas notes on this site list other items to check in that market. If your home is inside a special district, add that levy to your estimate, as explained in the MUD guide.

Common mistakes

• Using the seller’s last bill as your budget.
• Forgetting to file for the homestead exemption in the first year.
• Ignoring the notice of appraised value because “it is new”.
• Not checking whether the lot is in a special district.
• Assuming rates are fixed for several years.