Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$536,649$231 / 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

420 CARROLL ST

MANDEVILLE, LA 70448
0
Baths
2,320 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.
1905
Year BuiltThe year the home was originally built, according to county records.

Valuation

$537K
$510K low$563K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,705 (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.$20,465 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$13,865
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$20,465
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$204,650

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.48%
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
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.

M
Mandeville Junior High SchoolA+
Middle · Grades 7–8 · 0.5 mi
E
Mandeville Elementary SchoolA
Elementary · Grades PK–3 · 0.9 mi
H
Mandeville High SchoolA-
High · Grades 9–12 · 2.5 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%

Owner Tools

Do you own this home?
Claim this home

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

420 Carroll 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 88% of homes in Saint Tammany County
  • Costs more per square foot than 94% of homes in Saint Tammany County
  • Bigger than 69% 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
$154K$891K

This home is worth more than 86% 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$536,649
CheaperTypical $350,160Pricier

Pricier than 86% of homes nearby

Price per ft²$231
CheaperTypical $176Pricier

Pricier than 91% of homes nearby

Living area2,320 ft²
SmallerTypical 2,004 ft²Bigger

Bigger than 68% of homes nearby

Year built1905
OlderTypical 1995Newer

Older than almost all homes nearby

How 420 Carroll St ranks against every home in each area.
MeasureThis homeMandeville 70448Saint Tammany County
Estimated valuepricier than$536,64986% of homes88% of homes
Price per ft²pricier than$23191% of homes94% of homes
Living areabigger than2,320 ft²68% of homes69% of homes
Year builtnewer than1905almost no homes3% of homes

About 420 Carroll St

How much is 420 Carroll St, Mandeville, LA worth?

The TopHap Estimate for 420 Carroll St, Mandeville, LA is $536,649 as of Sep 24, 2026. The likely range is $510,027 to $563,271. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 420 Carroll St, Mandeville, LA last sell?

420 Carroll St, Mandeville, LA last sold on Dec 30, 2014, according to the county's recorded deed.

When was 420 Carroll St, Mandeville, LA built?

420 Carroll St, Mandeville, LA was built in 1905, making it 121 years old.

What schools serve 420 Carroll St, Mandeville, LA?

420 Carroll St, Mandeville, LA is assigned to Mandeville Junior High School (middle), rated A+; Mandeville Elementary School (elementary), 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 420 Carroll St, Mandeville, LA compare to other homes in Mandeville 70448?

Among the 9,655 homes in Mandeville 70448, it is worth more than 86% of them ($536,649 against a typical $350,160), its price per square foot is higher than 91% of them ($231 against a typical $176), it is bigger than 68% of them (2,320 ft² against a typical 2,004 ft²) and it is newer than almost none of them (1905 against a typical 1995). Measured against all of Saint Tammany County, it is worth more than 88% 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 420 Carroll St, Mandeville, LA?

The 2025 property tax bill for 420 Carroll St, Mandeville, LA was $1,705. The county assessed it at $20,465.

More homes on Carroll St

Closest homes

More homes in Mandeville 70448

Assigned schools

Explore the area

See this home in context

Open 420 Carroll St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map