We check whether a protest will actually lower your tax bill, after caps and exemptions, before you pay. If it will, we mail you a ready-to-sign kit with a return envelope addressed to the Collin Central Appraisal District — a flat $89. You sign it and mail it. No percentage of your savings.
To protest your Collin County property taxes in 2027, send a Notice of Protest (Form 50-132) to the Collin Central Appraisal District by May 17, 2027 — or within 30 days of your appraisal notice, whichever is later. Include evidence that your home is valued above market or above similar homes. Protests are authorized under Texas Tax Code §41.41. TaxAppeal USA checks first whether a protest will actually lower your tax bill. If it will, we mail you a ready-to-sign protest kit for a flat $89 — you sign it and mail it. No percentage of your savings.
We hold Collin County's certified 2026 appraisal roll. Every figure below is counted directly from it — 329,688 single-family homes, the district's own numbers. Nothing here is estimated or averaged in from another county.
Only 10.3% of Collin County homes are held below market by a cap, so for most owners here a reduction in market value reaches the tax bill directly. Texas caps how fast a homestead's taxable value can rise — 10% a year under Tax Code § 23.23, and 20% on most non-homestead property under § 23.231. We check where your property sits against that cap before you pay us, and we tell you when the answer is that a protest would not move your bill.
The median Collin County home on the roll is 2,458 square feet — a very large typical home. At that size a single per-foot rate stretched across a whole neighbourhood fits individual houses least well, and the spread between similar-looking homes tends to be widest in dollars.
The median Collin County value divided by the median home size comes to roughly $196 a square foot. That is a high per-foot level, where much of a home's value can sit in its location and lot. A $10-a-foot difference is only about 5.1% here, so a strong equal-and-uniform case in Collin County usually rests on larger gaps between homes that are closely matched.
This is the question an equal-and-uniform protest turns on. Texas Tax Code § 41.43(b)(3) does not ask whether your home is worth what the district says — it asks whether your home is appraised equally with comparable properties. So what matters is how much the district's own values disagree with each other.
Across 1,860 Collin County neighbourhoods, the typical home's appraised value per square foot sits 8.3% away from the median for its own neighbourhood. That is a fairly tight spread, though not so tight that outliers do not exist. Most Collin County homes sit close to their neighbours; the ones that do not, stand out clearly.
The median Collin County home was built in 2004, so the county holds a mix of established neighbourhoods and newer construction — and a mass-appraisal model tends to handle the two with different accuracy.
The district divides 329,688 Collin County homes into just 1,979 neighbourhood codes — around 167 homes each. These are broad groupings, which cuts both ways. There is no shortage of comparables, but a single Collin County neighbourhood code can span streets that are not much alike, so the properties the district treats as equivalent to yours may not be. Selecting the ones that genuinely match is most of the work.
Measured over every state-class A home with recorded living area, in neighbourhoods of at least 10 homes, using the appraised values on the district's certified 2026 roll. Texas does not disclose sale prices, so this compares the district's values to each other rather than to the market — which is what § 41.43(b)(3) compares too.
Source: Collin Central Appraisal District certified 2026 appraisal roll, as published by the district. Counted 2026-10-04. We publish these because we hold the data — if we did not hold your county's roll, we would not file for you, and this section would not be here.
Under Texas Tax Code §41.41 — we check first, we mail you the kit, you sign it and mail it
Many Collin County protest services take a share of your savings. TaxAppeal USA charges $89 for the kit, once, and only after checking that a protest would lower your bill.
Your TaxAppeal USA kit comes with the form filled in and a return envelope already addressed to the correct Collin County authority, so you don't have to track down addresses, forms or deadlines. You sign it, add a stamp and mail it. We do not file your protest or contact the county for you.
Deadline: May 17, 2027. Enter your address and we'll check whether a protest would actually lower your tax bill before you pay anything. If it won't, we'll tell you, and we won't sell you one.
Check My Protest — $89 Kit →TaxAppeal USA is a self-service document-preparation service. We prepare a ready-to-sign appeal kit and mail it to you; you sign it and mail it to the county yourself. In every state we serve, including Florida, we are not property tax consultants, agents, or representatives, we do not provide tax or legal advice, and we do not file appeals or represent customers before any appraisal district, board of assessors, board of equalization, value adjustment board, or review board. Every appeal, protest and petition is prepared for the property owner, signed by the owner, and mailed by the owner in the owner’s name. In Florida your petition is signed by you as the property owner under section 194.011(3), Florida Statutes, and the county’s Value Adjustment Board filing fee is paid by you directly to the county. TaxAppeal USA does not sign as your representative, does not appear before the Board, and does not present evidence or argument at a hearing.