Updated July 2026.
Updated
Two brand new homes in Nampa, same size, same price, three miles apart, can carry property tax bills that differ by more than $450 a year. Not because one is nicer. Because they sit in different school districts.
Nampa is split between Nampa School District #131 and Vallivue School District #139. Both are inside Nampa city limits. Both pay the same county, the same city, the same fire district. The school levy is where they part ways, and on a $400,000 home in 2026 that gap is real money every year for as long as you own the house.
Almost nobody brings this up at a builder’s model home. Here is the whole thing, with the county’s own numbers.
Why do two new homes in Nampa have different property taxes?
Because Nampa contains two separate school districts, and school levies are the biggest single variable in a Nampa tax bill.
From the Canyon County Assessor’s 2025 tax rate sheet, comparing two tax code areas that are both City of Nampa:
| Both are City of Nampa | School district | Total 2025 levy rate |
|---|---|---|
| Code area 002-00 | Nampa School District #131 | 0.0066798830 |
| Code area 002-17 | Vallivue School District #139 | 0.0078124620 |
Same county levy. Same city levy. Same fire district. The difference is 0.001132579, which works out to roughly $453 a year on $400,000 of taxable value, and about $566 on $500,000.
The reason is straightforward. In 2025 Nampa School District #131 carried no bond levy. Vallivue School District #139 did. A bond is voter-approved debt for buildings, and it lands on the tax bill of every property inside that district’s lines.
Which Nampa neighborhoods are in which school district?
Generally speaking, the Vallivue portion of Nampa sits north and northwest, and Nampa School District covers most of the rest. Five Vallivue schools sit physically inside Nampa city limits, including Ridgevue High School on Madison Road.
But “generally speaking” is not good enough when there is $450 a year riding on it, and the district line does not follow city streets in a way you can eyeball.
Here is what that looks like in actual Nampa communities selling right now. CBH Homes publishes the assigned district for some of theirs: New York Landing is Nampa School District, while East Ridgevue Estates and Peregrine Estates are Vallivue.
Verify the district for the specific address, in writing, before you go under contract. Not the subdivision. The address. Ask the builder to confirm it and check it yourself against the district. If you want to look at how each district is performing academically, the state publishes it at idahoreportcard.org, and you should read that yourself and draw your own conclusions rather than take anyone’s word for which one suits your family.
How much are impact fees on a new home in Nampa in 2026?
Nampa’s development impact fees on a new single family home total $10,094 in 2026, up from $8,194 under the previous schedule. That is a 23.2% increase, and it is baked into what you pay for a new build.
From the City of Nampa’s 2026 fee bulletin, per housing unit:
| Impact fee | Previous | 2026 | Change |
|---|---|---|---|
| Streets | $3,421 | $4,933 | +44.2% |
| Parks | $2,476 | $3,133 | +26.5% |
| Police | $639 | $761 | +19.1% |
| Fire | $1,658 | $1,267 | −23.6% |
| Total | $8,194 | $10,094 | +23.2% |
Two things worth noticing. Streets jumped 44% while fire actually went DOWN. And the city applied the new schedule to any building permit submitted on or after January 1, 2026, with no exceptions for projects already in the pipeline.
Add the city’s connection fees on top: wastewater $1,815, water $269, and irrigation starting at $1,582 for a one inch service. That is roughly $13,760 in city fees on one new Nampa home before the building permit itself.
What is the pressurized irrigation assessment in Nampa?
It is an annual bill you will not see in Meridian or Boise, and new buyers in Nampa are regularly surprised by it.
The City of Nampa runs its own pressurized irrigation system. The city owns the pumps, mains, and the curb stop valve. You own everything from that valve to your sprinkler heads. The assessment runs $199.05 a year and rises about 5% effective March 1, 2026, and it varies with lot size.
Domestic water went up too, from $32.12 to $35.36 a month effective February 1, 2026, a 10% increase approved on a 4 to 3 council vote. The city pointed to 1,200 miles of water and irrigation pipe, roughly 50 miles of it more than 50 years old, and 47 mainline breaks in the prior year.
None of this is a reason to avoid Nampa. It is a reason to put the real number in your budget instead of the builder’s estimate.
Is Nampa still approving new subdivisions?
Yes, but the votes are getting closer, and that matters if you are buying into a community that is not finished yet.
In June 2026 the city council approved the 355 home Highline subdivision in north Nampa on a 3 to 2 vote, and BoiseDev reported that roughly 970 unapproved lots already sit within a mile of it. Four months earlier the council rejected Orchard Acres, a 276 acre project of about 1,400 homes, on a 4 to 2 vote, citing traffic, water pressure, and sewer lines installed in the 1960s and 70s. The developer had offered to donate land for a fire station. It did not change the outcome.
Nampa council member Sebastian Griffin put the question plainly in a July 2026 op-ed: “Is growth actually paying for itself in Nampa? The honest answer is, no, not completely.”
If you are buying a lot in a phase that has not been approved yet, that is the environment you are buying into. Ask which phases are approved and which are not.
What should you actually do with all this?
Four things, before you sign anything.
Get the school district in writing for your exact address. It is worth about $450 a year and it is the easiest thing on this list to confirm.
Ask when the building permit was submitted. A home permitted before January 1, 2026 was fee’d under the old schedule. That does not automatically come back to you, but it tells you something about how the builder priced the house.
Budget the irrigation assessment and the new water rate, not the estimate on the builder’s worksheet.
Ask which phases of the subdivision are actually approved. Especially north of town.
[GARRETT: your first-hand line goes here. Something you actually saw on a Nampa build, ideally a buyer who got surprised by the district line, the irrigation bill, or a phase that never got approved. Two sentences is plenty. No names, no addresses.]
The honest part
New construction in Nampa is not a trap and it is not a slam dunk. It is a purchase with a few local wrinkles that the person selling you the house has no particular reason to bring up.
One of my clients put it better than I could. As youngnidaho wrote: “He had houses lined up for us to look at and when I chose the difficult one, he warned me that it would be a ‘process’. He knew the possibilities of what could happen and advised me of those up front. He didn’t back down just because it was going to be a difficult purchase.”
That is the job. Not talking you into the house. Making sure you know what you are signing.
A home is shelter first. Get the shelter right, know the real carrying cost, and the money usually takes care of itself.
If you want the long version, I put together a New Construction Guide that walks the contract, the walkthrough, and the questions people forget until it is too late. More on the area is on the Nampa page, and you can browse communities across the valley.
Ask for the school district in writing. It is one question and it is worth four hundred and fifty bucks a year.
Garrett with Living in Idaho at LPT Realty.
Sources
- Canyon County Assessor, 2025 Tax Rates by Code Area
- Idaho State Tax Commission, 2025 Approved Levy Rates by County by District (certified October 27, 2025)
- City of Nampa, 2026 Development Impact Fee Schedule (Bulletin GA-11-2025-35, December 4, 2025)
- City of Nampa, Irrigation and 2026 utility rate increases
- Idaho Report Card, Idaho Department of Education
- BoiseDev, Highline subdivision and north Nampa growth (June 24, 2026)
- Gem State Chronicle, Sebastian Griffin on Nampa growth (July 24, 2026)
Everything the Nampa market is doing right now, sourced and dated, is in the Nampa real estate guide.
Garrett Pancheri
Co-Owner & Team Leader, Living in Idaho at LPT Realty
Born and raised in Nampa. My team has helped 2,000+ families buy and sell across the Treasure Valley, 500+ of them with me personally. If a deal is not right for you, I will be the first to say so.
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