Clearing land can trigger an ag exemption rollback tax when the clearing is part of a change of use, such as building a house or a commercial site on land appraised for agriculture. Under Texas Tax Code 23.55, the rollback equals the tax savings for the three preceding years. Whether your project counts as a change of use is decided by the appraisal district.
This guide from Homestead Land Clearing explains how that works in general terms. It is not tax or legal advice, and the appraisal district has the final word on any parcel. The goal is to help you ask the right questions before the land changes, not after.
What the ag exemption actually is
Most people say “ag exemption,” but the tax law treats it as a special appraisal rather than an exemption. Land devoted to qualifying agricultural use can be appraised on what it produces as farm or ranch land instead of what it would sell for. In fast-growing parts of Collin and Denton County, that gap between productivity value and market value can be large, which is why the rollback matters.
Collin Central Appraisal District’s guidance says land generally has to have been devoted to a qualifying agricultural use for at least five of the preceding seven years. Each district publishes its own standards for what counts as agricultural use in its county, such as minimum stocking or acreage rules. Denton Central Appraisal District’s guidelines were not reviewed for this guide, so ask that district directly for land on the Denton side.
How the rollback is calculated
Texas Tax Code 23.55 sets the rule for open-space land. When the use changes to something other than agriculture, an additional tax is due. It equals the difference between the taxes actually imposed on the agricultural value and the taxes that would have been imposed on market value, for each of the three years before the change.
Two details often surprise people:
- It is three years, not five. House Bill 3833, effective June 15, 2021, cut the look-back for this category from five years to three and changed the interest rule. The current text of subsection (a) contains no interest charge.
- It looks back regardless of ownership. The three years are measured from the change of use, so a buyer who changes use soon after purchase can face a rollback that covers years under the previous owner.
Land appraised under the older 1-d agricultural rules is handled differently, and that category carries interest. Your appraisal notice says which one applies.
When clearing is, and is not, the trigger
Clearing is not, by itself, named in the statute. The trigger is a change of use, and the chief appraiser decides whether one has happened. That puts clearing projects into rough groups.
| Project | How it relates to change of use | Who to ask |
|---|---|---|
| Clearing a house site, driveway and yard on ag land | Building is a non-agricultural use; that part of the land is likely to lose ag valuation | Appraisal district, before clearing |
| Clearing for a commercial pad, subdivision or parking | A change to development use | Appraisal district and your closing or development team |
| Brush management on pasture that stays in grazing | The sources reviewed did not address this directly | Appraisal district; keep records of the agricultural purpose |
| Clearing a fence line or trail on working land | Often part of agricultural operations, but not addressed by the sources reviewed | Appraisal district |
| Clearing to sell the land | Depends on what the buyer then does with it | Appraisal district and a real estate professional |
The partial-parcel rule matters on larger tracts. The chief appraiser can apply a change of use to only the part of a parcel whose use changes. A five-acre house site on a 40-acre pasture may not affect the rest, provided the remainder still meets the district’s standards. That is a district decision, not a contractor’s.
City tree rules on agricultural land
Agricultural use also changes how some cities treat tree removal, which is a separate question from taxes.
- Frisco: agricultural users may remove protected trees with a permit and a tree survey, and the replacement requirement is prorated over 10 years.
- Lucas: property zoned agricultural and actively farmed is exempt from the tree removal and site clearing permit.
- Fairview: property zoned agricultural and actively farmed may remove up to seven protected trees per calendar year without a permit; more needs a permit after an on-site inspection.
- McKinney: quality trees of 6 inches or more are protected on land with a qualified agricultural appraisal.
Those rules describe current agricultural use. Clearing to build ends that status, and normal tree permit rules apply. The Frisco tree removal permit guide, the Lucas service area page and the Fairview page go into each town.
Brush management on land that stays in agriculture
Clearing that keeps land productive, such as removing cedar, mesquite or honey locust from pasture, is a different kind of job from clearing a building site. It usually means pasture clearing or brush clearing with stumps cut low enough to mow, rather than grubbing. USDA NRCS offers EQIP cost share for brush management that meets its practice standard, for agricultural producers on eligible land, ranked competitively each fiscal year. Our EQIP application window post explains how that cycle runs.
Regrowth matters for working land. Texas A&M AgriLife Extension describes mesquite as resprouting from buds below ground, so a pasture plan needs follow-up; see does brush grow back after clearing.
Questions to ask the appraisal district first
Before any clearing on land with agricultural valuation, a short list of questions can save a surprise bill:
- Does my planned project count as a change of use, and for how much of the parcel?
- If only part of the land changes, does the remainder still qualify under your standards?
- What records should I keep if the clearing is for agricultural purposes?
- When is a rollback billed, and how is it calculated for my parcel?
Collin CAD handles agricultural appraisal applications on the Collin side, and the Collin County Tax Assessor’s FAQ points exemption questions there. Denton CAD does the same for Denton County. A tax professional can help you weigh the numbers.
How this fits into a clearing scope
The approved process starts with walking the property and checking the rules for that address, then writing the scope before a price. Agricultural valuation is not something a clearing contractor can decide, but it belongs on the list of things to settle before work starts, alongside tree permits and utility locates. The clearing land to build a house guide covers the rest of that sequence, and the cost per acre guide covers budgeting.
When your questions with the appraisal district are settled, get in touch to set up a property walk.