What typically changes your appraisal
| Project | Likely treatment | Why |
|---|---|---|
| Room or second-story addition | Adds value outside the 10% cap | New square footage is a new improvement |
| Garage conversion | Can add value | Converts unconditioned space to living area |
| Major remodel | Can add value | If it increases market value beyond repair |
| Repairs and maintenance | Not a new improvement | Excluded by the Tax Code definition |
| Same-size rebuild after a storm | Generally not a new improvement | Disaster replacement exception |
If you are 65 or older or disabled
The school tax ceiling (the “freeze”) generally doesn’t cover new improvements other than repairs and maintenance. Adding on to or enlarging your home can raise the ceiling. Ask the Harris Central Appraisal District how a specific project will be treated before you build.
If you disagree with the new value
You can protest your appraisal with HCAD each year. Keep your contract, invoices and photos so you can show what was repair and what was new.
Common questions
Does HCAD know when I remodel?
Appraisal districts review property each year and can use permit records, inspections and sales data. Permitted work is the norm and protects you; unpermitted work causes problems when you sell.
Does a new roof raise property taxes in Texas?
Replacing a roof is generally treated as repair or maintenance, not a new improvement, under the Tax Code definition. An appraisal district still sets market value each year.
Is this tax advice?
No. It is general information from the Texas Comptroller. For your property, ask HCAD or a property tax professional.
Sources
- Texas Comptroller: Appraisal and tax limitations
- Harris Central Appraisal District: Homeowner exemptions
This guide is general information, not legal, tax or financial advice. Rules change; confirm details with the agency named in the sources or a licensed professional.