Key Takeaways
- Texas values property as of January 1, so the evidence for a 2027 protest has to describe the property on that date.
- The most important work, such as pulling financials and documenting condition, can be done before the notice arrives.
- Renditions are generally due April 15. Skipping a required rendition can shift the burden of proof to the owner.
- The protest deadline for most owners in 2027 is May 15, which falls on a Saturday. Filing early avoids relying on the weekend rule.
- Last year’s value is not a floor, and a recent purchase does not rule out a protest.
For most Harris County commercial owners, property tax season starts when the Harris Central Appraisal District, or HCAD, mails its notices in the spring. By then, the window to prepare is short. Hearings can be set within weeks of filing, and evidence has to be organized and submitted ahead of them.
Owners who start in the fall have more options. The Ambrose Group’s 2027 Harris County property tax protest guide covers the full process from notice to appeal. This article focuses on the months before the notice and the steps that strengthen a commercial protest.
Why the work starts before the notice
Texas appraises property at market value as of January 1 each year. That date controls what evidence is relevant. Rents, occupancy, condition, and deferred maintenance must be shown as they stood on that day, not as they look in May.
HCAD lists notices of appraised value as delivered between March and April. Notices for property other than single-family homesteads are due by May 1, or as soon after as practicable. Protest hearings in Harris County can run from May through October. Owners who wait for the notice before collecting records often find themselves assembling a case on a deadline.
2027 adds one more reason to prepare. The Texas Comptroller states that the 20% annual cap on appraisal increases for non-homestead real property valued at or under about $5.3 million expires December 31, 2026. Unless lawmakers extend it, some commercial owners could see notices that reflect full market value for the first time in several years.
Step 1: Pull the financial records now
For income-producing property, the financial file is usually the core of the protest. Between now and the end of the year, owners can gather:
- Income and expense statements for the past two to three years.
- A current rent roll, including lease terms, rates and expiration dates.
- Vacancy history and any concessions given to tenants.
- Major capital expenses and planned repairs.
- Last year’s ARB order or settlement, and any evidence submitted then.
Reviewing the prior year’s file is a useful exercise. It shows what the district saw last time and, just as important, what it didn’t. A protest built on new information has a better chance than one that repeats an argument the ARB already rejected.
Step 2: Document the property as of January 1
The second step happens in early January. Dated photos of the property, notes on vacant space, and records of condition problems create a clear picture of the property on the valuation date.
Commercial buildings often have issues that do not show up in the district’s records. A roof near the end of its life, outdated mechanical systems, parking lot damage or an empty anchor space can all affect value. If those facts are not documented as of January 1, they are harder to use later.
This is also the time to check the district’s records for errors. Incorrect square footage, the wrong year built or a mistaken building class can push a value up before any market analysis begins.
Step 3: Build the market evidence
Market evidence is where many commercial protests succeed or fail. Texas is a non-disclosure state, which means sale prices are not part of the public record. Appraisal districts often have to estimate commercial sale prices, and those estimates can miss the mark.
Strong market evidence usually includes:
- Sale comparables adjusted for differences in size, age, location and condition, rather than a simple list of nearby sales.
- Lease comparables that show market rent for similar space.
- Support for a capitalization rate on income-producing property.
Owners who bought the property recently face a specific decision: whether and when to share purchase documents. A closing statement can help or hurt depending on how the purchase price compares with the district’s value. That decision deserves careful thought before anything is submitted. A recent purchase does not mean a protest is pointless.
For higher-value or complex properties, an independent appraisal can carry real weight. An appraisal reports what the evidence supports rather than a target number, which is what makes it credible at a hearing.
Step 4: Handle renditions and representation in the spring
Renditions are generally due April 15, and owners can request a written extension to May 15. Renditions matter more than many owners realize. Under Tax Code Section 41.43(d), skipping a required rendition can shift the burden of proving value from the district to the owner.
Spring is also the time to decide who will handle the protest. Any owner can file and appear. Owners who want a consultant or agent to represent them need to complete the appointment paperwork so that person can act on the account. Teams that handle Appraisal Review Board representation are busiest from May through the summer, so early arrangements help.
Step 5: Act the week the notice arrives
When the notice arrives, the earlier preparation pays off. A practical checklist for that week:
- Note the date printed on the notice. It determines the filing deadline.
- File through HCAD’s iFile system, using the iFile number printed on the notice. Single-family owners may see an iSettle option, but commercial property goes through the informal meeting and ARB process instead.
- Select both market value and unequal appraisal as reasons when both apply.
- Request an informal meeting with an HCAD appraiser. The district must hold one before the hearing if the owner asks.
- Ask for the district’s evidence. HCAD must notify the owner at least 14 days before the hearing that a free copy is available.
The protest deadline is May 15 or the 30th day after the notice was mailed, whichever is later. In 2027, May 15 is a Saturday, so the last timely day under state law becomes Monday, May 17. Relying on that extra weekend leaves little room for error, especially for paper filings that depend on a postmark.
Understanding the burden of proof
At the ARB hearing, the appraisal district must prove the value by a preponderance of the evidence. In certain situations, the standard rises to clear and convincing evidence. One example is when the district lowered the value the prior year without a written agreement and the owner files income and expense statements, sales information or equity data at least 14 days before the hearing. Preparing early makes it easier to meet that 14-day window.
The ARB also cannot set a value higher than the appraisal records unless the owner asks for it or agrees to it. Protesting does not put the value at risk at the board.
Planning for what comes after
Not every protest ends at the ARB. Once the board issues its order, owners generally get 60 days from receiving it to request binding arbitration or file suit in district court. Owners of non-industrial property valued above $1 million can also appeal to the State Office of Administrative Hearings, with a shorter 30-day notice window.
Each route has its own costs and limits. The trade-offs are covered in a separate article on whether property tax arbitration in Texas is worth it. The complete Texas property tax protest guide gives a statewide view of each stage.
On every route, the undisputed portion of the tax still has to be paid before the delinquency date.
A timeline that fits the season
Starting in the fall spreads the work across several months instead of a few weeks. Financial records come together before the holidays, condition is documented in January, renditions and representation are handled in the spring, and the filing goes in the week the notice arrives. By the time the hearing is scheduled, the evidence is ready.
About The Ambrose Group: The Ambrose Group is a Texas real estate consulting firm based in Jersey Village that has provided appraisal, property tax consulting and cost segregation services since 1994.
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