Collin County — texaspropertytaxappeal.com

Protest Deadline: May 15, 2026 (40 days left)

509 KNOLL PARK CT

This property may be over-assessed.

Estimated annual tax savings
$1,956
Based on assessment gap vs. neighborhood median
Your $/sqft
$251
Neighborhood median
$195
Appraised value
$460,233
% above median
28.5%
Heated area
1,833 sqft
Year built
2002

Comparable properties in your neighborhood

These homes are similar to yours and assessed lower per square foot.

Address Sqft Year Market Value $/Sqft Diff
9004 CLEARVIEW DR 1,831 2002 $443,095 $242 -$9
9001 REGAL OAKS DR 1,833 2003 $440,000 $240 -$11
9001 AMBER DOWNS DR 1,817 2003 $441,714 $243
9104 GARDEN GROVE DR 1,817 2003 $452,093 $249
9121 GARDEN GROVE DR 1,813 2003 $440,459 $243
9113 GARDEN GROVE DR 1,813 2003 $448,048 $247

🔒 4 more comparable properties available in your evidence packet

How we calculated this

We compared your property's assessed value per square foot ($251/sqft) against the median for your neighborhood ($195/sqft). Your property is assessed 28.5% higher than typical homes nearby.

If the appraisal district adjusted your value to the neighborhood median, you could save approximately $1,956 per year in property taxes based on the Collin County effective tax rate.

We identified the 6 most comparable homes — matched on square footage, age, quality, and location — all assessed at lower $/sqft values.

What you'll receive

📋

Filing Guide

Your exact deadline, required forms, and step-by-step Collin County filing process

📊

Evidence Packet

Full comparable sales analysis with 6 properties, assessment discrepancy calculation, and maps

✉️

Cover Letter

Pre-written appeal letter with hearing talking points, ready to sign and submit

This decision compounds

Year 1
$1,956
Year 2
$3,912
Year 3
$5,868

That’s a 120× return on $49

Get your protest packet

One-time fee · No recurring charges · You keep 100% of your savings

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Protest deadline: May 15, 2026 (40 days left)