Why it's worth appealing
Property taxes are deductible as an operating expense on Schedule E for rental properties, so every dollar of assessed value matters twice: once as a cash cost, and once as a reduction in your taxable rental income. A $2,000 annual over-assessment costs you $2,000 in cash and, at a combined 35% income tax rate, reduces the deduction value by $700 — making the true annual cost around $1,300 in after-tax dollars.
Assessors often rely on mass appraisal models that miss property-specific issues: deferred maintenance, functional obsolescence, below-market rents, vacancy, or location factors. These errors are common and correctable through the formal appeal process.
How the appeal process works
Most jurisdictions offer a two-step process: an informal review (submit a form, sometimes online, with your evidence) followed by a formal hearing before an appeal board if informal review fails. Deadlines vary — typically 30–90 days from the mailing of the assessment notice. Missing the deadline forfeits your right to appeal for that year.
You do not need an attorney for most small-to-mid residential appeals. For commercial properties above $1–2 million, a property tax consultant or appraiser who specializes in appeals is worth the contingency fee (typically 25–35% of the first-year savings).
What evidence wins
The strongest evidence is a recent sales comparison: sales of comparable properties in your area at values below the assessed value. Pull comps from the MLS, public records, or a licensed appraiser. The assessor's own records are public — compare your property's assessed value to assessment-to-sale ratios of recent comparables.
For income-producing properties, an income approach can be powerful: document current rents (the rent roll), vacancy, operating expenses, and capitalize the NOI at a market cap rate to derive a supportable value. A value conclusion that's 15–25% below the assessment — backed by comps or an appraisal — typically succeeds at the board level.
Frequently asked questions
How much does a property tax appeal cost?
Filing is typically free or a nominal fee. Hiring a consultant costs a contingency fee (25–35% of first-year savings) or a flat fee. An independent appraisal for evidence runs $400–$1,500 depending on property type.
Does winning an appeal affect future years?
Usually yes — a successful appeal resets your assessed value going forward, though assessors can reassess upward in future cycles. The savings compound year over year until the next reassessment.
Is the property tax deduction affected by the appeal?
Your deduction equals what you actually paid. If the appeal results in a refund for the prior year, you may need to include that refund in income if you previously deducted the full amount.
Sources
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.