Assessor
Ada County Assessor
Appeal Deadline
June (4th Monday)
Required Form
Board of Equalization petition
Risk of Increase
Rare but possible
Median Home Value
$420,000
Effective Tax Rate
0.75%
Estimated Annual Savings
$473
Based on 15% reduction
Ada County Assessor Portal
Access your property records, assessment details, and file appeals directly through the official Ada County website.
Visit https://adacounty.id.gov/assessorTips for Ada County Appeals
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Boise area — one of fastest-growing metros
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File petition with the Board of Equalization
Step-by-Step
How to Appeal in Ada County
Review your property assessment notice from Ada County Assessor. Verify the property details — square footage, bedroom count, lot size, and condition.
Research comparable sales in your area. Look for recent sales of similar properties that sold for less than your assessed value.
File your appeal by the June (4th Monday) deadline. You can file online at https://adacounty.id.gov/assessor, by mail, or in person.
Prepare your evidence packet. Include comparable sales data, property condition photos, and any repair estimates that affect value.
Attend your appeal hearing. Present your evidence clearly and focus on comparable sales that support a lower value.
Receive your decision. If the appeal is unsuccessful, check your options for further appeal.
FAQ
Ada County Property Tax Questions
How do I appeal my property tax in Ada County, Idaho?
File a appeal with Ada County Assessor by the June (4th Monday) deadline. You can file online at https://adacounty.id.gov/assessor, by mail, or in person. ProtestMax generates your complete appeal packet for $45 flat.
What is the property tax rate in Ada County?
The average effective property tax rate in Ada County is approximately 0.75%. The median home value is $420,000, resulting in an average annual tax bill of approximately $3,150.
What is the appeal deadline for Ada County?
The appeal deadline for Ada County is June (4th Monday). Make sure to file before this deadline to preserve your right to appeal.
How much can I save by appealing my Ada County property tax?
A successful appeal in Ada County typically reduces the assessed value by 10-20%. On the median home value of $420,000, a 15% reduction saves approximately $473 per year.
Can my property tax increase if I appeal?
In Idaho, there is a theoretical risk that your assessed value could increase as a result of a appeal. However, this is rare in practice, and most appeals result in a reduction or no change.