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Single Family ResidenceResidential
$998,175$331 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $955,000 on Nov 18, 2024

399 ANDANADA ST

LOS ALAMOS, NM 87544
4
Beds
2.5
Baths
3,016 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
1.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$998K
$949K low$1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$955,000 · Nov 18, 2024

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$297,560 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$67,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$229,660
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$322,930
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$892,670

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyLOS ALAMOS
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2005
Lot (acres)The size of the land the home sits on, from county records.1.18
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 1,390 ft²Porch · 120 ft²

Transaction History(3)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Los Alamos Middle SchoolA
Middle · Grades 7–8 · 0.5 mi
E
Barranca Mesa Elementary SchoolB
Elementary · Grades PK–6 · 0.6 mi
H
Los Alamos High SchoolB+
High · Grades 10–12 · 1.7 mi

District: Los Alamos Public Schools

Neighborhood · ZIP 87544These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.116

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.16,205
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.54 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$134,232
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$159,555
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.16 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.76%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

399 Andanada St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 95% of homes in Los Alamos County
  • Costs more per square foot than 69% of homes in Los Alamos County
  • Bigger than 86% of homes in Los Alamos County
  • Among the largest lots in Los Alamos 87544

What homes are worth in Los Alamos 87544

Each bar is how many homes fall in that price range. The marker is this home.

This home
$298K$1.2M

This home is worth more than 94% of homes in Los Alamos 87544.

How it measures up in Los Alamos 87544

The dot is this home. The mark in the middle is the typical home in Los Alamos 87544.

Estimated value$998,175
CheaperTypical $639,006Pricier

Pricier than 94% of homes nearby

Price per ft²$331
CheaperTypical $305Pricier

Pricier than 68% of homes nearby

Living area3,016 ft²
SmallerTypical 2,040 ft²Bigger

Bigger than 84% of homes nearby

Lot size1.18 ac
SmallerTypical 0.22 acBigger

Bigger than almost all homes nearby

Year built1972
OlderTypical 1968Newer

Newer than 51% of homes nearby

How 399 Andanada St ranks against every home in each area.
MeasureThis homeLos Alamos 87544Los Alamos County
Estimated valuepricier than$998,17594% of homes95% of homes
Price per ft²pricier than$33168% of homes69% of homes
Living areabigger than3,016 ft²84% of homes86% of homes
Lot sizebigger than1.18 acalmost all homes94% of homes
Year builtnewer than197251% of homes49% of homes

About 399 Andanada St

How much is 399 Andanada St, Los Alamos, NM worth?

The TopHap Estimate for 399 Andanada St, Los Alamos, NM is $998,175 as of Sep 24, 2026. The likely range is $949,071 to $1,047,279. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 399 Andanada St, Los Alamos, NM last sell?

399 Andanada St, Los Alamos, NM last sold on Nov 18, 2024 for $955,000, according to the county's recorded deed.

How big is 399 Andanada St, Los Alamos, NM?

399 Andanada St, Los Alamos, NM has 4 bedrooms, 2.5 bathrooms, 3,016 square feet of living space and a 1.18-acre lot.

When was 399 Andanada St, Los Alamos, NM built?

399 Andanada St, Los Alamos, NM was built in 1972, making it 54 years old. The building has 1 story.

What schools serve 399 Andanada St, Los Alamos, NM?

399 Andanada St, Los Alamos, NM is assigned to Los Alamos Middle School (middle), rated A; Barranca Mesa Elementary School (elementary), rated B; Los Alamos High School (high), rated B+. All sit in Los Alamos Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 399 Andanada St, Los Alamos, NM compare to other homes in Los Alamos 87544?

Among the 4,477 homes in Los Alamos 87544, it is worth more than 94% of them ($998,175 against a typical $639,006), its price per square foot is higher than 68% of them ($331 against a typical $305), it is bigger than 84% of them (3,016 ft² against a typical 2,040 ft²), its lot is bigger than almost all of them (1.18 ac against a typical 0.22 ac) and it is newer than 51% of them (1972 against a typical 1968). Measured against all of Los Alamos County, it is worth more than 95% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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