Los Alamos, Los Alamos County, New Mexico Property Taxes

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Property Taxes in Los Alamos, New Mexico

Median Los Alamos, New Mexico effective property tax rate: 0.76%, significantly lower than the national median of 1.02%, and lower than the New Mexico state median of 0.85%.
Median Los Alamos, New Mexico home value: $369,610
Median annual Los Alamos, New Mexico tax bill: $2,706, $306 higher than the national median property tax bill of $2,400.

How are property taxes in Los Alamos calculated?

Property taxes in Los Alamos, New Mexico are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding Los Alamos's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Los Alamos, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Los Alamos, Los Alamos County, New Mexico Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

0.76%

Estimate Property Tax Bill

$2,809

$2,607

How Does the Los Alamos Property Tax Calculator Work?

Use this Los Alamos property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Los Alamos's median effective tax rate of 0.76% — based on actual property records in Los Alamos County — to generate your estimate.

Enter your property's estimated assessed value — the figure the local assessment process uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Los Alamos's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.

Your bill may vary by ZIP code within Los Alamos: rates range from 0.76% in 87544 to 0.76% in 87544, primarily due to differences in school district levies and local assessment districts.

For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Los Alamos.

About Los Alamos Property Taxes

About Property Taxes in Los Alamos, Los Alamos, New Mexico

Los Alamos's median effective property tax rate of 0.76% is lower than the New Mexico state median of 0.85% and lower than the national median of 1.02%. This rate reflects the Los Alamos County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.

Property tax rates are not uniform across Los Alamos. Homeowners in the 87544 ZIP code carry a median effective rate of 0.76%, while those in the same ZIP code pay 0.76%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Los Alamos County. Understanding which part of Los Alamos you live in can make a meaningful difference to your annual tax bill.

Los Alamos homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the May 1, 2026 deadline each year.

If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.

Property Tax Rates Across Los Alamos, Los Alamos County, New Mexico

As noted earlier, local government entities set tax rates, which can vary widely within a state.

Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.

While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.

Below, you can compare Los Alamos's effective property tax rate to other cities in New Mexico and the median property tax rates in New Mexico and the U.S.

Property Tax Rates Across Los Alamos, Los Alamos County, New Mexico

Source: Ownwell

0.76%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Los Alamos Tax Rate

0.76%

Median Effective Los Alamos County Tax Rate

0.76%

Median Effective New Mexico Tax Rate

0.85%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Los Alamos, Los Alamos County, New Mexico

Zip	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
87544	0.72%	0.75%	0.76%	0.76%	0.76%

Source: Ownwell

Property Tax Assessment Values Across Los Alamos, Los Alamos County, New Mexico

When examining property taxes in Los Alamos, New Mexico, understanding the distinction between market value and assessed value is crucial.

The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Los Alamos County assessment office estimates the market value for tax purposes.

The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.

Assessment notices are sent in April each year and typically reach your mailbox by the middle of the month.

Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. The median home price in Los Alamos is $369,610, with tax bills ranging across the county. Zip code 87544 has the highest median home price at $369,610.

Property Tax Assessment Values Across Los Alamos, Los Alamos County, New Mexico

Source: Ownwell

$362,490

$366,050

$369,610

Median Los Alamos Market Value

$369,610

Median Los Alamos County Market Value

$367,265

Median New Mexico Market Value

$129,686

Median United States Market Value

$235,294

Property Tax Assessment Values Across Los Alamos, Los Alamos County, New Mexico

Zip	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
87544	$148,468	$236,310	$369,610	$521,840	$678,144

Source: Ownwell

Property Tax Bills Across Los Alamos, Los Alamos County, New Mexico

Property tax bills in Los Alamos are based on the assessed value of a home and the local tax rate set by the county and other taxing authorities. For a home with a median market value of $369,610, the bill reflects how much of that value is taxed after assessment rules are applied.

Homeowners in Los Alamos typically see bills that vary with property value, exemptions, and local levies. The median property tax bill is $2,706, which is above the national median property tax bill of $2,400 and close to the national median property tax rate of 1.02%.

Bills can range widely. The 25th percentile tax bill is $1,738, while the 75th percentile reaches $3,838. At the high end, the 90th percentile tax bill is $5,007. This means homeowners with higher-valued properties or fewer reductions may pay significantly more, while others may owe less depending on their assessed value and available exemptions.

Property Tax Bills Across Los Alamos, Los Alamos County, New Mexico

Source: Ownwell

$2,667

$2,687

$2,706

Median Los Alamos Tax Bill

$2,706

Median Los Alamos County Tax Bill

$2,686

Median New Mexico Tax Bill

$1,249

Median United States Tax Bill

$2,400

Property Tax Bills Across Los Alamos, Los Alamos County, New Mexico

Zip	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
87544	$1,084	$1,738	$2,706	$3,838	$5,007

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	May 1

Links
Los Alamos Tax Assessor
Website	eagleweb.losalamosnm.us

Frequently Asked Property Tax Questions in Los Alamos, New Mexico

How are property taxes calculated in Los Alamos, New Mexico?

Property taxes in Los Alamos, New Mexico are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Los Alamos, New Mexico?

To appeal your property taxes in Los Alamos, New Mexico, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Los Alamos, New Mexico?

Common property tax exemptions in Los Alamos, New Mexico include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Los Alamos, New Mexico?

Property tax deadlines in Los Alamos, New Mexico vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Los Alamos, New Mexico?

Ownwell provides professional property tax appeal services in Los Alamos, New Mexico. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.