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Single Family ResidenceResidential
$377,791$262 / 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 79How 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

1821 JEFFERSON ST

MANDEVILLE, LA 70448
0
Baths
1,442 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.
0.29 ac
Lot SizeThe size of the land the home sits on, from county records.
1903
Year BuiltThe year the home was originally built, according to county records.

Valuation

$378K
$297K low$459K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,192 (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.$17,297 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$12,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$4,597
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$17,297
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$172,969

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.180 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.26%
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.1 percent flood zone

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.0.29
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

E
Woodlake Elementary SchoolA
Elementary · Grades PK–3 · 0.3 mi
M
Mandeville Junior High SchoolA+
Middle · Grades 7–8 · 1.0 mi
H
Mandeville High SchoolA-
High · Grades 9–12 · 2.9 mi

District: St. Tammany Parish School District

Neighborhood · ZIP 70448These 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.55
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.31

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.25,090
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,267 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$91,515
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$125,632
Average tempThe average temperature here across a full year.68°F
Annual precipHow much rain and melted snow falls here in a typical year.65 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

1821 Jefferson 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 72% of homes in Saint Tammany County
  • Costs more per square foot than 96% of homes in Saint Tammany County
  • Smaller than 79% of homes in Mandeville 70448
  • Has a smaller lot than 80% of homes in Saint Tammany County
  • Among the oldest homes in Mandeville 70448

What homes are worth in Mandeville 70448

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

This home
$159K$912K

This home is worth more than 58% of homes in Mandeville 70448.

How it measures up in Mandeville 70448

The dot is this home. The mark in the middle is the typical home in Mandeville 70448.

Estimated value$377,791
CheaperTypical $352,570Pricier

Pricier than 58% of homes nearby

Price per ft²$262
CheaperTypical $176Pricier

Pricier than 94% of homes nearby

Living area1,442 ft²
SmallerTypical 2,003 ft²Bigger

Bigger than 21% of homes nearby

Lot size0.29 ac
SmallerTypical 0.52 acBigger

Bigger than 31% of homes nearby

Year built1903
OlderTypical 1995Newer

Older than almost all homes nearby

How 1821 Jefferson St ranks against every home in each area.
MeasureThis homeMandeville 70448Saint Tammany County
Estimated valuepricier than$377,79158% of homes72% of homes
Price per ft²pricier than$26294% of homes96% of homes
Living areabigger than1,442 ft²21% of homes23% of homes
Lot sizebigger than0.29 ac31% of homes20% of homes
Year builtnewer than1903almost no homes3% of homes

About 1821 Jefferson St

How much is 1821 Jefferson St, Mandeville, LA worth?

The TopHap Estimate for 1821 Jefferson St, Mandeville, LA is $377,791 as of Sep 24, 2026. The likely range is $297,072 to $458,510. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1821 Jefferson St, Mandeville, LA last sell?

1821 Jefferson St, Mandeville, LA last sold on Aug 11, 2026, according to the county's recorded deed.

How big is 1821 Jefferson St, Mandeville, LA?

1821 Jefferson St, Mandeville, LA has 1,442 square feet of living space and a 0.29-acre lot.

When was 1821 Jefferson St, Mandeville, LA built?

1821 Jefferson St, Mandeville, LA was built in 1903, making it 123 years old.

What schools serve 1821 Jefferson St, Mandeville, LA?

1821 Jefferson St, Mandeville, LA is assigned to Woodlake Elementary School (elementary), rated A; Mandeville Junior High School (middle), rated A+; Mandeville High School (high), rated A-. All sit in St. Tammany Parish School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1821 Jefferson St, Mandeville, LA compare to other homes in Mandeville 70448?

Among the 9,655 homes in Mandeville 70448, it is worth more than 58% of them ($377,791 against a typical $352,570), its price per square foot is higher than 94% of them ($262 against a typical $176), it is bigger than 21% of them (1,442 ft² against a typical 2,003 ft²), its lot is bigger than 31% of them (0.29 ac against a typical 0.52 ac) and it is newer than almost none of them (1903 against a typical 1995). Measured against all of Saint Tammany County, it is worth more than 72% 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 1821 Jefferson St, Mandeville, LA?

The 2025 property tax bill for 1821 Jefferson St, Mandeville, LA was $2,192. The county assessed it at $17,297.

More homes on Jefferson St

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