Texas · The homestead exemption is a tax value, not a dwelling limit
A homestead exemption lowers the value the school tax uses. It does not lower Coverage A.
The Texas Comptroller’s exemption page says school districts must give a $140,000 residence homestead exemption. A home appraised at $300,000 is then taxed by the school district as if it were worth $160,000. That is their example, not a quote of your bill. A taxing unit may add a local-option exemption of up to 20 percent of appraised value, and that local piece cannot be less than $5,000. Counties that collect farm-to-market or flood-control taxes must give a $3,000 residence homestead exemption. You have to own the home and live in it as your principal residence, and you cannot claim another homestead. Confirm eligibility with your appraisal district. This is not tax advice.
A protest argues the appraisal. It is not an insurance claim, and this page does not invent a deadline or a percent you will save. The process is on the Comptroller’s protest page, and how they value property is valuing property. The exemption rules themselves: property tax exemptions. The policy those taxes do not replace: Texas homeowners.