Property taxes are based on your home's assessed value, and assessments are often wrong. Studies show that 30-60% of properties are over-assessed. Successfully appealing your assessment can save hundreds to thousands of dollars per year — every year going forward.
How Property Tax Assessments Work
Your property tax = Assessed Value × Tax Rate
If your assessed value is too high, you're paying too much. Assessors use mass appraisal methods that can miss individual property characteristics, recent sales data, or condition issues.
Signs Your Assessment Is Too High
- Your assessed value increased significantly without home improvements
- Comparable homes in your neighborhood sold for less than your assessed value
- Your home has condition issues (foundation problems, needed repairs) not reflected in the assessment
- The assessment includes incorrect information (wrong square footage, extra bathrooms, lot size)
Step-by-Step: Appeal Your Assessment
Step 1: Review Your Assessment Notice
- Check the assessed value against your home's actual market value
- Verify all property details are correct (square footage, bedrooms, bathrooms, lot size, age)
- Note the appeal deadline (typically 30-90 days from the notice)
Step 2: Gather Evidence
- Comparable sales: Find 3-5 recent sales of similar homes in your area that sold for less than your assessed value. Use Zillow, Redfin, or your county assessor's website.
- Property details: Document any errors in the assessment (wrong square footage, missing defects)
- Condition evidence: Photos of damage, deferred maintenance, or negative factors (noisy road, flood zone, railroad proximity)
- Independent appraisal: For large assessments, a professional appraisal ($300-500) can pay for itself many times over
Step 3: File the Appeal
- Contact your county assessor's office or board of review
- Submit the appeal form before the deadline
- Include your evidence (comparable sales, error documentation, photos)
- Request a hearing date
Step 4: Present Your Case
At the hearing:
- Be organized and factual
- Present comparable sales showing lower values
- Point out assessment errors
- Bring an appraisal if you have one
- Be respectful — hearing officers have discretion
Step 5: If the First Appeal Fails
- Most jurisdictions have a second-level appeal (county board of equalization or state tax court)
- Consider hiring a property tax appeal firm — they typically work on contingency (25-50% of first year's savings)
- Check if your state allows ongoing appeals for future years
How Much Can You Save?
The average successful property tax appeal reduces the assessment by 10-30%. On a $400,000 home with a 1.5% tax rate:
- 10% reduction = $600/year savings
- 20% reduction = $1,200/year savings
- 30% reduction = $1,800/year savings
These savings compound every year until the next reassessment.
Quick Checklist
- [ ] Review your assessment notice for accuracy
- [ ] Verify property details (square footage, rooms, lot size)
- [ ] Find 3-5 comparable sales below your assessed value
- [ ] Document any condition issues or negative factors
- [ ] File the appeal before the deadline
- [ ] Present evidence at the hearing
- [ ] Consider a professional appraiser for high-value properties
- [ ] Escalate to the next appeal level if denied
Bottom Line
Property tax appeals have a surprisingly high success rate — many jurisdictions see 30-50% of appeals result in a reduction. The effort required (gathering comparable sales and filing paperwork) is minimal compared to the potential savings of hundreds or thousands of dollars per year. Everyone should review their assessment when it arrives.
Sources
- National Taxpayers Union — property tax appeal statistics
- Lincoln Institute of Land Policy — property tax assessment studies