In short
- Property in the county was worth about $184 billion in 2026, up from about $65 billion in 2016 (our math).12
- Homes that owners live in make up about 57% to 58% of that value. That share has barely moved in 10 years (our math).12
- Business equipment was about 5% to 6% of the value in 2016 and 2021 (our math). The 2026 equipment figure looks incomplete, so we do not compare it.12
Numbers marked “our math” are our estimates, not official figures. The notes show the inputs and the steps.
How it works
- The appraisal district sets a market value for each property each year. It reports the totals for each school district in the county.1
- It splits value into types. “Homestead” means a home the owner lives in. Other land and buildings include rentals, stores, offices and empty lots. Farm and ranch land is counted at market value here, even though it is taxed on a lower value. Business equipment is things like machines and computers.1
- Market value is not taxable value. Exemptions, the homestead cap and farm-land rules make the taxed amount smaller.1
What the numbers show
| Type of property | 2016 | 2021 | 2026 |
|---|---|---|---|
| Homes owners live in (land and buildings) | $37.6B (58%) | $54.3B (57%) | $106.1B (57%) |
| Other land and buildings | $19.1B (29%) | $29.3B (31%) | $60.3B (33%) |
| Farm and ranch land (market value) | $4.7B (7%) | $6.4B (7%) | $11.1B (6%) |
| Business equipment | $3.4B (5%) | $5.3B (6%) | $7.0B (looks incomplete) |
| Total | $64.9B | $95.3B | $184.5B |
Source: Williamson Central Appraisal District, certified values by school district. Totals and shares are our math.12
- Total value grew about 2.8 times in 10 years (our math).2
- Other land and buildings grew a bit faster than homes, so their share rose from 29% to 33% (our math).2
- The 2026 business equipment total looks incomplete. One school district’s row (Round Rock ISD) shows almost no business equipment in 2026. A new state exemption also started in 2026, but this sheet cannot show how much of the change it caused. See business equipment tax.13
The other side
- These are market values, not tax bills. A home’s taxable value can be far below its market value because of the homestead cap and exemptions. See twenty percent cap ends 2027.
- Farm land looks bigger here than on tax rolls. It is taxed on what it produces, not on what it would sell for. See farm and ranch land valuation.
- The totals add up school-district rows. A few school districts reach into other counties, and only the Williamson part is counted here.1
- One year can swing. Values for 2026 are as certified in July and can change after appeals.
Changes to this page
- Nov. 2, 2026: Rewrote the questions to ask so each is open, neutral and addressed to the public body.
- Nov. 2, 2026: We had said business equipment fell as a share of value after a new state exemption. The 2026 figure looks incomplete because of one school district’s row, so we no longer say that.1
Questions to ask
- How does the appraisal district report the share of the tax load carried by homes after exemptions?
- How does the county expect the drop in business equipment value to change other owners’ bills?
What we still don’t know
- How much of the “other” group is rental homes versus stores and offices. The spreadsheet does not split them.
- How values changed after appeals for 2026.
- Why these types add up to about $184.5 billion while the spreadsheet’s own market value column says about $187.4 billion. Almost all of the difference is in the Round Rock school district row, and the spreadsheet does not define its columns. See from market value to taxable value.
Footnotes
-
Williamson Central Appraisal District, “1999 – 2026 Certified Values” spreadsheet, market value columns by school district (LandHS, ImpHS, LandNHS, ImpNHS, AgMkt, PersonalValue), 2016, 2021 and 2026 tabs. https://www.wcad.org/historical-data/ ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10
-
Our math, adding the school-district rows. 2016: homes 7.67 + 29.90 = 37.57; other 5.98 + 13.15 = 19.13; farm 4.72; equipment 3.44; total 64.86 ($ billions). 2021: 14.03 + 40.29 = 54.31; 8.13 + 21.20 = 29.33; 6.38; 5.26; total 95.28. 2026: 25.14 + 80.93 = 106.07; 18.21 + 42.10 = 60.31; 11.10; 7.01; total 184.49. Growth 184.49 ÷ 64.86 = 2.84. ↩ ↩2 ↩3 ↩4 ↩5 ↩6
-
Texas Tax Code §11.145, amended by House Bill 9 (2025), effective Jan. 1, 2026: business equipment worth less than $125,000 is exempt. https://statutes.capitol.texas.gov/Docs/TX/htm/TX.11.htm ↩