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Single Family ResidenceResidential
$331,851$118 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $279,900 on Sep 8, 2020

840 MADISON LN

SLIDELL, LA 70460
0
Baths
2,823 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.
2003
Year BuiltThe year the home was originally built, according to county records.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$332K
$323K low$341K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$279,900 · Sep 8, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,221 (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.$33,295 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,060
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$31,235
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$33,295
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$332,950

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.59
91
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
39
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
96
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
68
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
3
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.78 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.62%

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
HeatingThe type of heating system in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes

Transaction History(2)

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.

E
Henry L. Mayfield Elementary SchoolA
Elementary · Grades PK–6 · 2.8 mi
H
Slidell High SchoolC+
High · Grades 9–12 · 4.8 mi
M
Slidell Junior High SchoolC+
Middle · Grades 7–8 · 4.8 mi

District: St. Tammany Parish School District

Neighborhood · ZIP 70460These 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.119
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 100.30

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.11%
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.1.0%
PopulationHow many people live in this area.23,168
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.530 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$61,606
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$75,236
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

840 Madison Ln 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 94% of homes in Slidell 70460
  • Costs less per square foot than 80% of homes in Saint Tammany County
  • Bigger than 94% of homes in Slidell 70460
  • Newer than 66% of homes in Slidell 70460

What homes are worth in Slidell 70460

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

This home
$47K$431K

This home is worth more than 94% of homes in Slidell 70460.

How it measures up in Slidell 70460

The dot is this home. The mark in the middle is the typical home in Slidell 70460.

Estimated value$331,851
CheaperTypical $183,550Pricier

Pricier than 94% of homes nearby

Price per ft²$118
CheaperTypical $115Pricier

Pricier than 55% of homes nearby

Living area2,823 ft²
SmallerTypical 1,593 ft²Bigger

Bigger than 94% of homes nearby

Year built2003
OlderTypical 1997Newer

Newer than 66% of homes nearby

How 840 Madison Ln ranks against every home in each area.
MeasureThis homeSlidell 70460Saint Tammany County
Estimated valuepricier than$331,85194% of homes63% of homes
Price per ft²pricier than$11855% of homes20% of homes
Living areabigger than2,823 ft²94% of homes85% of homes
Year builtnewer than200366% of homes61% of homes

About 840 Madison Ln

How much is 840 Madison Ln, Slidell, LA worth?

The TopHap Estimate for 840 Madison Ln, Slidell, LA is $331,851 as of Aug 30, 2026. The likely range is $323,132 to $340,570. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 840 Madison Ln, Slidell, LA last sell?

840 Madison Ln, Slidell, LA last sold on Sep 8, 2020 for $279,900, according to the county's recorded deed.

When was 840 Madison Ln, Slidell, LA built?

840 Madison Ln, Slidell, LA was built in 2003, making it 23 years old.

What schools serve 840 Madison Ln, Slidell, LA?

840 Madison Ln, Slidell, LA is assigned to Henry L. Mayfield Elementary School (elementary), rated A; Slidell High School (high), rated C+; Slidell Junior High School (middle), rated C+. All sit in St. Tammany Parish School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 840 Madison Ln, Slidell, LA compare to other homes in Slidell 70460?

Among the 8,290 homes in Slidell 70460, it is worth more than 94% of them ($331,851 against a typical $183,550), its price per square foot is higher than 55% of them ($118 against a typical $115), it is bigger than 94% of them (2,823 ft² against a typical 1,593 ft²) and it is newer than 66% of them (2003 against a typical 1997). Measured against all of Saint Tammany County, it is worth more than 63% 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 840 Madison Ln, Slidell, LA?

The 2025 property tax bill for 840 Madison Ln, Slidell, LA was $4,221. The county assessed it at $33,295.

More homes on Madison Ln

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Assigned schools

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