Lewisville Valley, Denton County: property tax data
What the public appraisal record actually shows for this neighborhood — and how to use it if your own home's value looks too high.
Lewisville Valley by the numbers
25th to 75th percentile appraised value spread
Source: Denton County appraisal datadata as of August 1, 2026
What this means for a protest here
Denton County's own records put 822 comparable properties inside the shared area behind Lewisville Valley -- a name that here covers two separate appraisal codes, SL0309A and SL0100A, tracked together as one neighborhood. That's the comparison pool a protest packet is built from. Run every one of those 822 parcels through the same math the county uses, and 50% of them come out with a defensible case: their appraised value sits higher than the comparables around them support.
The size of that case varies widely once you have one. Among the parcels with a gap worth arguing, the smallest sits near 0% and the largest reaches 31%. Half of those cases land below 5%, while the top quarter climb past 11% -- so which comparable a homeowner points to matters as much as the fact that a gap exists at all. That variation lines up with a per-square-foot spread running from $92 to $245 across homes carrying the same neighborhood code, which is a wide enough range that no single appraised figure describes this area evenly.
How filing a protest actually works
Your deadline to file a written protest is whichever comes later: May 15, or the 30th day after your appraisal district delivers your notice of appraised value. There's no single date that applies to everyone — it depends on when your own notice arrives, not a date any page can print in advance.
A protest based on unequal appraisal compares your property against similar, nearby homes in this same neighborhood. LoneStarLower prepares that comparison and the supporting materials; it does not file the protest, negotiate with the appraisal district, or represent you at a hearing. You file it, using Form 50-132 or an equivalent written notice, with your county's appraisal district office — not the Texas Comptroller, which doesn't handle individual protests. You attend the hearing and present the evidence yourself.
Questions about this data
Where does the Lewisville Valley data come from?
It's pulled from a Denton County Central Appraisal District ArcGIS extract dated August 1, 2026, folded into the county-wide snapshot this site built on August 22, 2026.
Why does this page combine two geo codes into one neighborhood?
Denton County tracks this area under two appraisal codes, SL0309A and SL0100A. Both are rolled into the same Lewisville Valley record here, so every count and percentage on this page reflects parcels from both codes together, not just one.
How many homes in this comparison actually show a gap worth protesting?
Out of the 822 comparable parcels in the August 1, 2026 county extract, 50% show an appraised value above what their comparables support. Whether any single home's notice fits that pattern still depends on that home's own numbers.