Top 7 Mistakes Homeowners Make When Protesting Property Taxes

In 2025, 4,865 property owners filed protests with the Douglas County Board of Equalization. While 47% received a reduction, the other 53% walked away empty-handed — and in many cases, the reason was not a weak case but a preventable mistake. After analyzing common protest outcomes and BOE hearing patterns, here are the seven most damaging errors homeowners make, why they happen, and exactly how to avoid them.

1. Missing the June 30 Filing Deadline

This is the most absolute mistake on this list because there is no remedy. The Douglas County Board of Equalization accepts protests from June 1 through June 30 every year. If your protest is not filed by the close of business on June 30, it will not be considered. There are no extensions, no grace periods, and no exceptions for good cause.

Why It Happens

Assessment notices arrive in late April or early May, and many homeowners set them aside intending to deal with them later. June arrives, life gets busy, and suddenly it is July. Others assume the deadline is later in the year or confuse it with tax payment due dates.

How to Avoid It

Put the deadline on your calendar the day you receive your assessment notice. Better yet, aim to file by June 15 to give yourself a buffer. Filing online through the BOE website takes minutes once your evidence is prepared. If mailing your protest, the form must be received (not postmarked) by June 30. See our full 2026 deadlines guide for every date you need to know.

2. Using Zillow or Redfin Estimates as Evidence

Every year, homeowners walk into their BOE hearing and present a Zillow Zestimate or Redfin estimate as proof that their home is overvalued. The board will not find this persuasive, and relying on it signals that you have not done serious research.

Why It Happens

Online home value estimators are convenient and well-known. When a homeowner sees that Zillow values their home at $280,000 but the county assessed it at $320,000, it feels like slam-dunk evidence. The problem is that Zestimates are algorithmic estimates based on incomplete data. They do not account for property condition, specific neighborhood dynamics, or the assessment methodology that the county uses. The BOE evaluates your property against actual sales and actual assessments — not estimates from a website.

How to Avoid It

Use actual comparable sales from the past 12 to 18 months as your primary evidence. The Douglas County Assessor’s website provides verified sale prices for properties in your area. Big Red Value uses AI to identify the strongest comparable sales and assessments specific to your property, giving you the kind of evidence the board actually weighs. For a deeper understanding, see our guide on comparable sales analysis.

3. Comparing to Properties Outside Your Neighborhood or Quality Grade

Selecting the wrong comparable properties is one of the fastest ways to undermine an otherwise valid case. If your comparables are in a different neighborhood, a different school district, or a significantly different quality grade, the board will disregard them — and may question the credibility of your entire presentation.

Why It Happens

Homeowners naturally gravitate toward the lowest-priced sales they can find, even if those homes are miles away or in a clearly different market segment. A $250,000 sale in a different part of Omaha does not prove that your $350,000-assessed home in Elkhorn is overvalued. The county assigns quality grades (based on construction quality, age, condition, and features), and comparables need to match on these dimensions to be persuasive.

How to Avoid It

Choose comparables that are genuinely similar to your property:

• Within the same neighborhood or immediate surrounding area
• Similar square footage (within 15–20%)
• Similar age, style, and construction quality
• Same number of bedrooms, bathrooms, and garage stalls
• Sold within the past 12–18 months

Big Red Value automates this matching process using the same property characteristics the county assessor uses, ensuring your comparables will withstand scrutiny at the hearing.

4. Focusing on Market Value When Unequal Appraisal Is Stronger

Most homeowners file their protest arguing overvaluation — that the assessed value exceeds fair market value. This is a valid approach, but it is not always the strongest one. In many cases, an unequal appraisal (equalization) claim under NE Rev. Stat. 77-1502 is more powerful and easier to prove.

Why It Happens

Overvaluation is the more intuitive argument. Homeowners think in terms of what their house is worth on the open market. Equalization, by contrast, asks a different question: is my property assessed fairly relative to similar properties? Many homeowners do not know this argument exists or do not understand how to present it.

How to Avoid It

Before deciding on your legal basis, compare your property’s assessed value per square footto that of similar homes in your neighborhood. If comparable properties are assessed at $140 per square foot and yours is assessed at $165 per square foot, you have a strong equalization claim — regardless of whether your assessed value exceeds market value. The county is required to assess similar properties equally, and disparities give the board a clear, data-driven reason to reduce your value. You can argue both overvaluation and unequal appraisal on the same Form 422, and in many cases, you should.

5. Not Documenting Property Condition Issues with Photos

If your home has deferred maintenance, structural problems, water damage, an outdated kitchen, or any condition issue that reduces its value, the BOE needs to see it. Verbal descriptions are not enough. Without photographic evidence, the board has no way to verify your claims, and the assessor will argue that the property is in average condition as assumed in the assessment.

Why It Happens

Homeowners assume the board will take their word for it, or they feel embarrassed about the condition of their home and do not want to draw attention to problems. Others simply do not realize that photos are an important and accepted form of evidence.

How to Avoid It

Take clear, well-lit photographs of every condition issue that affects your property’s value. Organize them by category:

• Exterior: roof damage, siding deterioration, foundation cracks, drainage problems, aging windows
• Interior: outdated kitchens or bathrooms, worn flooring, water stains, unfinished spaces
• Systems: aging HVAC, old electrical panels, plumbing issues
• Lot issues: grading problems, proximity to busy roads or commercial property, easements

Include these photos with your protest evidence package and reference them during your hearing. A picture of a crumbling foundation does more persuasive work than five minutes of verbal explanation.

6. Getting Emotional at the Hearing Instead of Presenting Data

Property taxes are personal. They affect your monthly budget, your ability to stay in your home, and your sense of fairness. It is natural to feel frustrated. But the BOE hearing is not the place to express that frustration. Board members hear hundreds of cases each summer, and emotional appeals — no matter how genuine — do not provide a legal basis for reducing your assessment.

Why It Happens

Homeowners feel strongly that their taxes are unfair, and when they finally get a chance to speak to the board, they lead with frustration rather than facts. Common but ineffective arguments include: “My taxes are too high,” “I’m on a fixed income and can’t afford this,” or “My neighbor pays less than I do” (without supporting data).

How to Avoid It

Treat the hearing like a business presentation. Prepare your key points in advance, lead with your strongest comparable data, and let the numbers make your argument. A proven structure:

1. State the assessed value you are contesting
2. State the value you believe is correct and why
3. Present your 3 to 5 strongest comparable sales or assessments
4. Note any property condition issues (with photos) that the assessment does not reflect
5. Summarize and request the specific reduction you are seeking

Keep your presentation under 10 minutes. Be respectful and direct. The board members are public servants doing their jobs — approaching them with organized evidence and professionalism makes them more receptive to your case. For a complete guide on hearing preparation, see our 2026 protest walkthrough.

7. Not Appealing to TERC When the BOE Ruling Is Wrong

If the Board of Equalization denies your protest or offers an insufficient reduction, many homeowners assume the process is over. It is not. You have the right to appeal to the Tax Equalization and Review Commission (TERC), which conducts an independent review of your case. The TERC deadline is September 10.

Why It Happens

Homeowners are discouraged by the BOE denial and assume that if the local board ruled against them, a higher authority will too. Others simply do not know that TERC exists or that they have a right to appeal. The TERC process is more formal than a BOE hearing, which can feel intimidating for unrepresented property owners.

How to Avoid It

Understand that a BOE denial is not the final word. If you believe your evidence supports a reduction and the BOE disagreed, evaluate whether a TERC appeal makes sense. TERC is particularly effective for unequal appraisal claims, where the statistical evidence of assessment disparities is clear and hard for the commission to dismiss. Key considerations:

• The TERC filing deadline is September 10— mark it on your calendar immediately after receiving your BOE decision.
• TERC proceedings are more formal. Consider whether hiring an attorney makes sense at this stage, even if you handled the BOE hearing yourself.
• Strengthen your evidence package. If you identified weaknesses in your BOE presentation, add additional comparables or documentation for the TERC hearing.
• TERC can order a reduction even when the BOE did not — it is a genuinely independent review.

For all key dates, review our 2026 Nebraska protest deadlines article.

A Smarter Approach: Avoid All Seven with Better Preparation

Every mistake on this list comes back to one root cause: insufficient preparation. Missing the deadline is a planning failure. Using weak evidence is a research failure. Getting emotional at the hearing is a presentation failure. The good news is that the right tools and a small investment of time can address all seven.

Big Red Value helps you avoid the most critical preparation mistakes. In about 15 minutes, it analyzes your property against Douglas County assessment data to identify the strongest comparable properties, calculates your potential reduction, and determines whether an overvaluation or unequal appraisal argument is stronger for your specific case. It is free, uses AI and machine learning for comparable analysis, and gives you the evidence foundation that separates the 47% who succeed from those who walk away with nothing.

Key Takeaways

The difference between a successful protest and a failed one usually is not the strength of your case — it is whether you avoided these seven preventable mistakes. Prepare early, use real data, and present it professionally.

• The June 30 deadline is absolute. File online at boe.douglascounty-ne.gov by mid-June to be safe.
• Use actual comparable sales and assessments — never Zillow or Redfin estimates.
• Choose comparables that match your property’s neighborhood, size, age, and quality grade.
• Evaluate whether an unequal appraisal claim under 77-1502 is stronger than an overvaluation argument.
• Photograph every condition issue and include photos in your evidence package.
• Present data at the hearing, not emotions. Prepare a structured 10-minute presentation.
• If the BOE denies your protest, consider a TERC appeal by September 10.
• Big Red Value provides free, AI-powered analysis that helps you avoid the most common research and strategy mistakes.