"So the higher-end homes are getting a better discount." Tarrant Appraisal District Chief Appraiser Joe Don Bobbitt said this at the district's August 2026 board meeting. He had just explained that residential property in Tarrant County is appraised at about 85 percent of market value overall, and homes valued around $1 million at only about 71 percent.
Anyone pricing a Westlake estate should take that sentence seriously. The tax figure attached to a listing reflects the seller's appraisal, the seller's homestead cap and a year in which Tarrant County homes were not reappraised at all. The most consequential factor for a buyer is the high-end appraisal discount, and Tarrant County's 2027 reappraisal is scheduled to test it.
The Rate Westlake Advertises Is the Smallest Line
Westlake's town rate is low. In its September 30, 2026 budget review, the Town said the rate is planned to stay at $0.18500 per $100 for the 2027 tax year. It also called this the lowest rate among its bordering cities, including Southlake, Keller and Roanoke. The town's rate is only one of several on a Westlake bill. Here are the rates adopted in September 2026 for the units that tax a Westlake home:
| Taxing unit | 2026 adopted rate per $100 | Applies to |
|---|---|---|
| Town of Westlake | $0.18500 | All Westlake homes |
| Keller ISD | $1.05200 | Addresses in Keller ISD |
| Northwest ISD | $1.063800 | Addresses in Northwest ISD |
| Tarrant County | $0.186000 | Tarrant County parcels |
| Tarrant County Hospital District/JPS | $0.159000 | Tarrant County parcels |
| Tarrant County College | $0.120000 | Tarrant County parcels |
| Denton County | $0.183394 | Denton County parcels only |
Take a Tarrant County home in Keller ISD. Adding the rates from that table gives a combined base rate of about $1.70 per $100. This is before exemptions and before any special district that applies to a specific parcel. The town's $0.185 is roughly 11 percent of that total. The school district's $1.052 is about 62 percent. Keller ISD kept its rate unchanged at its September 24 board meeting, and Tarrant County cut its rate slightly from $0.186200.
The Town names three school districts that serve Westlake: Carroll, Keller and Northwest ISDs. The table above covers only the Keller and Northwest rates. Keller ISD and Northwest ISD both tell families to look up an address in their own locator tools, which makes the address the reliable way to learn which district's rate applies. Because the rates are applied to appraised value, the more important number on a Westlake bill is that value.
The Town's Falling Bill Belongs to Existing Owners
The Town's budget review included a reassuring figure. It said appraised home values decreased from the prior year, so with the rate flat, the average homestead bill will fall by $442.
That figure is the Town's own, and it describes owners who already have a homestead. It also sits uneasily beside the countywide picture. The Fort Worth Report said the Tarrant Appraisal District did not reappraise homes in 2026. Residential values stayed frozen at a higher, earlier market value, and the district estimated that about 195,000 homeowners would likely have received lower bills had it reappraised. None of the public sources reviewed for this post explain how the Town's reported decrease fits with that freeze. A buyer should treat the $442 as a Westlake-wide average and should not read it as a forecast for any one home.
The freeze also changed the rest of the region. The same Fort Worth Report story said Colleyville was considering a 13 percent tax increase, and Fort Worth was weighing a higher rate to close a budget shortfall. Westlake held its rate. For a new owner, though, the rate matters less than the value it is applied to.
Three Discounts Built Into a Seller's Number
A long-held Westlake estate can carry a tax bill well below what a new owner will pay on the same house. Three discounts stack to produce that gap:
- The high-end appraisal discount. Bobbitt's figures put Tarrant County homes around $1 million at about 71 percent of market value, against about 85 percent for residential property overall. These are countywide figures, not a Westlake-specific study. They still point to the price range where Westlake's estate homes sit.
- The 2026 freeze. Tarrant County residential values were not reappraised this year, so a 2026 bill is based on an older valuation.
- The seller's homestead cap. The Texas Comptroller says the cap generally limits a homestead's appraised value to 10 percent growth a year, plus qualifying new improvements. It applies only after the owner has qualified for the homestead exemption in both the prior and current years. It ends when that owner no longer qualifies. A buyer does not inherit the seller's cap and has to start a new one.
Each discount works on the value the one before it has already reduced. A seller with years of capped growth on a home already appraised below market is paying on a value far from what the house will sell for. The buyer starts over.
Why 2027 Is the Year the Gap Gets Tested
On September 8, 2026, the Tarrant Appraisal District board voted 5-4 to reappraise residential property in 2027, keeping the odd-year schedule. Bobbitt told the board he expects residential appraised values to rise about 15 percent on average in the coming year. He added that the homestead cap will limit the increase on many homes to 10 percent.
That 10 percent limit protects owners who already qualify. A buyer who has not yet completed the qualifying years is not covered by it in the reappraisal year. Simple arithmetic shows why this matters at Westlake prices. On a house with $1 million of market value, the gap between appraisal at 71 percent and appraisal at full market value is $290,000. At a combined rate near $1.70 per $100, that gap equals roughly $4,900 a year in tax before exemptions. For a $3 million or $5 million estate, multiply accordingly. This is an illustration of how the gap scales. It is not a prediction of where any Westlake home will be appraised.
Exemptions reduce the bill but do not close the gap. For tax year 2026, the Texas Comptroller says Texas school districts must exempt $140,000 of a qualifying homestead's value. Tarrant County College also offers a local homestead exemption of 1 percent of appraised value, with a $5,000 minimum. Those amounts are fixed or proportional. At estate values, they cover a small share of the difference between a 71 percent appraisal and market value.
Denton County parcels are taxed by Denton County and appraised separately, so the Tarrant County figures above describe Tarrant County homes only.
What to Pull During a Westlake Search
- Confirm the county and the school district by address. Find out whether the home is in Carroll, Keller or Northwest ISD, since each district sets its own rate. Do this before comparing two homes in different parts of town.
- Read the appraisal record, not just the listing's tax line. Compare the appraised value with your expected purchase price, and note which exemptions the seller currently receives.
- Model the bill with no cap. Use the purchase price and the full rate stack for that address, minus only the exemptions you expect to qualify for.
- Mark the 2027 calendar. The Comptroller's standard date for single-family appraisal notices is April 1, or as soon after as practicable. The usual protest deadline is May 15 or 30 days after the notice is mailed, whichever is later. The Tarrant Appraisal District has not published a specific 2027 mailing date.
Protests are common in Tarrant County. The district estimates that more than 272,000 homeowners protested in 2026, and roughly 95 percent settled without a formal hearing. Confirm the specifics of your own property with the appraisal district or a qualified tax professional. This post is general market information, not tax advice.
Frequently Asked Questions
Does the seller's homestead exemption transfer to me?
No. The Comptroller ties the cap to the owner who qualifies, and it ends when that owner no longer qualifies. A new owner applies for the homestead exemption and starts a new cap after qualifying.
Is the 71 percent figure specific to Westlake?
No. It is a Tarrant County figure that Bobbitt gave at the August 2026 board meeting, and it was not broken out by city. A Place 2 candidate for the district's board, quoted in Community Impact, described ratios from the same meeting of 106 percent for homes under $200,000 and 71 percent for homes over $1 million. That account comes from the candidate. It is not a published district table.
Could the reappraisal schedule change again?
The schedule is set by the district's board, and voters elect some of its members. A Place 2 seat is on the November 3, 2026 ballot. The voter registration deadline is October 5, and early voting runs October 19 through 30. For now, the plan the board adopted calls for a residential reappraisal in 2027.
Before you make an offer on a Westlake estate, Andrea Miranda can pull the appraisal record for that address and lay out the seller's current bill next to a no-cap estimate at your purchase price. You can then compare carrying costs before the 2027 notices arrive. Get Exclusive Access.
