October 28, 2026 — Maverick Pools
If you’re dreaming about a backyard pool in Boise, Meridian, Eagle, Nampa or Caldwell, there’s a good chance this question has crossed your mind: will a new pool make my property tax bill go up? The answer is yes, it can, but Idaho handles it a little differently than most people expect. Let’s walk through how it actually works in Ada County and Canyon County, using the rules straight from Idaho law and the county assessors, so you can plan with confidence.
Quick note: we’re pool builders, not tax advisors, so your county assessor is always the final word on your specific property.
In Idaho, property is taxed based on its market value, and a well built inground pool is a permanent improvement to your property. When an improvement adds market value, that value can show up in your assessment. So yes, a pool can raise your assessed value, and that can raise your tax bill.
But there are two important pieces most homeowners miss. First, Idaho values property based on its status on one specific day each year. Second, your actual tax bill depends on more than your assessed value. It also depends on the budgets of the local taxing districts where you live.
Idaho Code section 63-205 says that all real property subject to property tax must be assessed annually at market value as of 12:01 a.m. on January 1 of the year the taxes are levied. In plain terms, the assessor looks at what your property, including your home, land and improvements, would likely sell for on the open market, as of the first day of the year.
Idaho Code section 63-317 backs this up: real property is valued and taxed based on its status as of January 1 of each tax year. For new improvements built during the year, the law says they aren’t subject to property tax during the year of construction other than the portion actually in place as of January 1.
What does that mean for a pool? Your county assessor is the one who decides how a specific project is treated, so always check with them. But the general takeaway is clear: Idaho property taxes look at what’s on your property as of January 1.
The Canyon County Assessor’s office explains that the assessor’s main job is to determine the market value of taxable property for the fair distribution of the property tax burden. The amount of taxes actually needed is not set by the assessor. It’s set by the individual taxing districts, such as cities, school districts and highway districts. Taxes are then collected by the county treasurer and sent to those districts. Extra tax can also be billed after voters approve levies at elections.
So when your assessed value goes up because of a new pool, your bill doesn’t simply rise by a fixed percentage of that value. Your share of the local tax burden is based on your value compared to everyone else’s in the same taxing districts, and on how much those districts budget.
If you own and live in your home as your primary residence, the Idaho State Tax Commission explains that you may qualify for the homeowner’s exemption on your home and up to one acre of land. The exemption removes 50 percent of the value of your home and up to one acre of land from property tax, up to a maximum amount set by the state. You apply with your county assessor’s office, and once you’re approved, it stays in place until ownership changes or the home is no longer your primary residence.
If you’ve already been approved, you don’t need to reapply just because you’re building a pool. If you bought your home recently in a new Treasure Valley subdivision and never applied, it’s worth checking with the Ada County or Canyon County Assessor before tax season.
Every year, Idaho homeowners receive a valuation assessment notice that shows the assessed market value of their property and explains their right to appeal to the county board of equalization.
The Ada County Assessor’s office encourages homeowners who believe their assessed value is higher than what the property would likely sell for to share market information with the appraiser assigned to their property. That can include a realtor’s comparative market analysis, an independent appraisal done for a sale or refinance, or other pertinent data. If you’re still not satisfied, you can appeal to the Ada County Board of Equalization, which only reviews market value, not the amount of tax. Completed appeal forms must be filed with the Ada County Commissioner’s Office on or before the fourth Monday of June at 5:00 p.m.
A pool is one of the best investments you can make in how you live at home, and a little planning keeps the tax side stress free. Here’s what we recommend to every Treasure Valley family:
Call your county assessor early. The Ada County Assessor’s office and the Canyon County Assessor’s office can explain how they treat new improvements like pools in your area.
Think about timing. Since Idaho values property based on its status as of January 1, ask your assessor how a project that spans the new year is handled.
Factor taxes into your overall budget. When you’re thinking through what a custom pool costs in the Treasure Valley, include an estimate of any ongoing tax change alongside maintenance and utilities.
When you work with Maverick Pools, you get one point of contact from your first sketch to your first swim. We start with a free design consultation and 3D design, so you can see your backyard before we break ground. From there, we prepare and submit your permit package, coordinate the licensed Idaho engineer who stamps your structural calcs, and schedule your inspections. If you live in a neighborhood with an HOA, we help you put together your HOA design package too. You can learn more about pool permits in Boise in our step by step guide.
And we don’t stop at the pool. Maverick also builds patios, outdoor kitchens, fire features and full backyard transformations, plus pool and spa packages, so your whole outdoor space comes together as one design. Already have a pool? We handle pool remodels, including plaster, tile and equipment upgrades.
Financing available through Lyons Financial, subject to lender approval.
Whether you’re looking for a custom pool builder in Boise, a pool builder in Meridian, a pool builder in Nampa or a pool builder in Caldwell, we’d love to help you plan a pool that fits your home, your family and your budget. Ready to get started? Book your free design consultation today and let’s design something amazing together!
Does an inground pool increase property taxes in Idaho?
It can. Idaho assesses property at market value as of January 1 each year, and a permanent inground pool is an improvement that can add market value. Your actual tax bill also depends on the budgets of your local taxing districts, so the effect varies by location.
When does a new pool show up on my Idaho property assessment?
Idaho values real property based on its status as of January 1 of each tax year, and new improvements are generally not taxed during the year of construction other than the portion in place on January 1. Your county assessor decides how your specific project is treated, so check the timing with them.
Does the homeowner’s exemption still apply after I add a pool?
The homeowner’s exemption applies to the home you own and occupy as your primary residence and up to one acre of land. Once approved, it stays in place until ownership changes or the home is no longer your primary residence, so building a pool doesn’t require you to reapply.
Can I appeal my assessment after building a pool in Ada County?
Yes. You can share market information with your assigned appraiser, and if you’re still not satisfied you can appeal to the Ada County Board of Equalization. Appeal forms must be filed with the Ada County Commissioner’s Office on or before the fourth Monday of June at 5:00 p.m. Appeals address market value only, not the amount of tax.
Who sets the property tax rate in Canyon County?
According to the Canyon County Assessor’s office, the assessor determines market value, but the amount of taxes is set by taxing districts such as cities, school districts and highway districts. The county treasurer collects the taxes and distributes them to those districts.
Every project starts with a free design consultation.