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Single Family ResidenceResidential
$274,824$129 / 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 92How 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 $225,000 on Sep 5, 2012

40015 ONYX ST

SLIDELL, LA 70461
0
Baths
2,124 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.
2 ac
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$275K
$253K low$297K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$225,000 · Sep 5, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,822 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$21,882 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,250
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$16,632
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$21,882
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$218,822

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.38 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.66%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.area not mapped

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySaint Tammany
Lot (acres)The size of the land the home sits on, from county records.2.00
HeatingThe type of heating system in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes

Transaction History(1)

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
Boyet Junior High SchoolA-
Middle · Grades 7–8 · 0.3 mi
H
Northshore High SchoolB+
High · Grades 9–12 · 1.8 mi
E
Cypress Cove Elementary School
Elementary · Grades PK–1 · 1.8 mi

District: St. Tammany Parish School District

Neighborhood · ZIP 70461These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.27

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.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.31,940
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.299 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,933
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$117,701
Average tempThe average temperature here across a full year.68°F
Annual precipHow much rain and melted snow falls here in a typical year.64 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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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

40015 Onyx 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.

  • Costs less per square foot than 70% of homes in Saint Tammany County
  • Has a bigger lot than 91% of homes in Slidell 70461
  • Older than 92% of homes in Slidell 70461

What homes are worth in Slidell 70461

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

This home
$92K$759K

This home is worth more than 53% of homes in Slidell 70461.

How it measures up in Slidell 70461

The dot is this home. The mark in the middle is the typical home in Slidell 70461.

Estimated value$274,824
CheaperTypical $265,317Pricier

Pricier than 53% of homes nearby

Price per ft²$129
CheaperTypical $131Pricier

Pricier than 46% of homes nearby

Living area2,124 ft²
SmallerTypical 2,065 ft²Bigger

Bigger than 55% of homes nearby

Lot size2 ac
SmallerTypical 0.26 acBigger

Bigger than 91% of homes nearby

Year built1971
OlderTypical 2000Newer

Newer than 8% of homes nearby

How 40015 Onyx St ranks against every home in each area.
MeasureThis homeSlidell 70461Saint Tammany County
Estimated valuepricier than$274,82453% of homes49% of homes
Price per ft²pricier than$12946% of homes30% of homes
Living areabigger than2,124 ft²55% of homes60% of homes
Lot sizebigger than2 ac91% of homes68% of homes
Year builtnewer than19718% of homes10% of homes

About 40015 Onyx St

How much is 40015 Onyx St, Slidell, LA worth?

The TopHap Estimate for 40015 Onyx St, Slidell, LA is $274,824 as of Sep 24, 2026. The likely range is $252,994 to $296,654. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 40015 Onyx St, Slidell, LA last sell?

40015 Onyx St, Slidell, LA last sold on Sep 5, 2012 for $225,000, according to the county's recorded deed.

How big is 40015 Onyx St, Slidell, LA?

40015 Onyx St, Slidell, LA has 2,124 square feet of living space and a 2.00-acre lot.

When was 40015 Onyx St, Slidell, LA built?

40015 Onyx St, Slidell, LA was built in 1971, making it 55 years old.

What schools serve 40015 Onyx St, Slidell, LA?

40015 Onyx St, Slidell, LA is assigned to Boyet Junior High School (middle), rated A-; Northshore High School (high), rated B+; Cypress Cove Elementary School (elementary). All sit in St. Tammany Parish School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 40015 Onyx St, Slidell, LA compare to other homes in Slidell 70461?

Among the 11,839 homes in Slidell 70461, it is worth more than 53% of them ($274,824 against a typical $265,317), its price per square foot is higher than 46% of them ($129 against a typical $131), it is bigger than 55% of them (2,124 ft² against a typical 2,065 ft²), its lot is bigger than 91% of them (2 ac against a typical 0.26 ac) and it is newer than 8% of them (1971 against a typical 2000). Measured against all of Saint Tammany County, it is worth more than 49% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 40015 Onyx St, Slidell, LA?

The 2025 property tax bill for 40015 Onyx St, Slidell, LA was $2,822. The county assessed it at $21,882.

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