60 homes in Parker, Collin County (appraisal neighborhood S4073), compared with their most similar neighbors.
We compared each of 60 single-family homes with its most similar neighbors (same neighborhood and quality, similar size and age). 49% have a house value above the median of those homes: together, $920,559 of house value above them. Texas lets you protest a value that is above the median of comparable homes.
We rate 4 "Yes" and 37 "Maybe". If every one of them protested and got the reduction their comparables support, their owners could pay about $14,845 less in property tax a year.
Of 60 Knolls Of Springhill homeowners in our data, 17 protested their 2026 value; 12 of 15 decided protests lowered it, typically by $48,072 (4.5% of the value).
Filing is free, online or by mail, and there's no agent contract to renew or cancel each year.
Their house values were above the median of the most similar neighbors, the comparison Texas law allows a protest on, but their owners didn't protest in 2026.
Median change in appraised market value from last year.
Our estimate from 2026 published tax rates and each home's exemptions: 1.5% of market value.
Usually a rental or second home. If it's your own home, a homestead exemption takes $140,000 off its school taxable value and caps yearly increases in taxable value at 10%; you apply with your appraisal district (Form 50-114).
Free, in about 10 seconds: how your home compares with similar homes nearby.
| Single-family homes | 60 |
|---|---|
| Median market value | $1,164,079 |
| Median change from last year | -0.8% |
| Median value per sq ft | $240 |
| Median living area | 4,690 sq ft |
| Median lot | 49,658 sq ft |
| Median year built | 2002 |
| Homes with a pool | 70% |
| Homestead exemption on file | 88% |
| Median estimated property tax | $17,231 a year |
| Median effective tax rate | 1.5% |
| Homes with a paid protest agent | 28% |
| Street | Homes | Above similar homes | Median gap |
|---|---|---|---|
| ROLLING KNOLLS DR | 14 | 50% | +0.2% |
| SHADY KNOLLS DR | 15 | 42% | -1.4% |
Streets with at least 10 homes we could compare. "Median gap": how far the street's typical house value is from its comparables' median.
The protest deadline is May 15, or 30 days after your appraisal notice was mailed, whichever is later. Check the date on your notice. New to this? Read how to protest.
Have a specific Texas address? Check it at taxprotesting.com/check?address=1234 Main St, Plano, TX with your own street address, or use the search box.
Based on 2026 appraisal values and protest outcomes from the Collin Central Appraisal District. Estimates, not promises: every protest is decided on its own evidence.