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Single Family ResidenceResidential
$245,661$172 / 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 93How 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 $169,900 on Nov 15, 2022

109 WALNUT ST

MANDEVILLE, LA 70471
0
Baths
1,430 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.
1992
Year BuiltThe year the home was originally built, according to county records.

Valuation

$246K
$229K low$262K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$169,900 · Nov 15, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,837 (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.$14,495 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$11,495
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$14,495
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$144,952

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.96 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.0.2 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

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
Pontchartrain Elementary SchoolA
Elementary · Grades PK–3 · 0.2 mi
H
Mandeville High SchoolA
High · Grades 9–12 · 0.3 mi
M
Mandeville Junior High SchoolA+
Middle · Grades 7–8 · 2.0 mi

District: St. Tammany Parish School District

Neighborhood · ZIP 70471These 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.73
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 100.33

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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.22,153
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.758 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$92,032
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$141,651
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

109 Walnut 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 less than 84% of homes in Mandeville 70471
  • Costs more per square foot than 68% of homes in Saint Tammany County
  • Smaller than 86% of homes in Mandeville 70471

What homes are worth in Mandeville 70471

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

This home
$135K$1.2M

This home is worth more than 16% of homes in Mandeville 70471.

How it measures up in Mandeville 70471

The dot is this home. The mark in the middle is the typical home in Mandeville 70471.

Estimated value$245,661
CheaperTypical $419,729Pricier

Pricier than 16% of homes nearby

Price per ft²$172
CheaperTypical $178Pricier

Pricier than 39% of homes nearby

Living area1,430 ft²
SmallerTypical 2,376 ft²Bigger

Bigger than 14% of homes nearby

Year built1992
OlderTypical 1993Newer

Newer than 46% of homes nearby

How 109 Walnut St ranks against every home in each area.
MeasureThis homeMandeville 70471Saint Tammany County
Estimated valuepricier than$245,66116% of homes40% of homes
Price per ft²pricier than$17239% of homes68% of homes
Living areabigger than1,430 ft²14% of homes22% of homes
Year builtnewer than199246% of homes37% of homes

About 109 Walnut St

How much is 109 Walnut St, Mandeville, LA worth?

The TopHap Estimate for 109 Walnut St, Mandeville, LA is $245,661 as of Aug 30, 2026. The likely range is $228,930 to $262,392. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 109 Walnut St, Mandeville, LA last sell?

109 Walnut St, Mandeville, LA last sold on Nov 15, 2022 for $169,900, according to the county's recorded deed.

When was 109 Walnut St, Mandeville, LA built?

109 Walnut St, Mandeville, LA was built in 1992, making it 34 years old.

What schools serve 109 Walnut St, Mandeville, LA?

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

How does 109 Walnut St, Mandeville, LA compare to other homes in Mandeville 70471?

Among the 7,972 homes in Mandeville 70471, it is worth more than 16% of them ($245,661 against a typical $419,729), its price per square foot is higher than 39% of them ($172 against a typical $178), it is bigger than 14% of them (1,430 ft² against a typical 2,376 ft²) and it is newer than 46% of them (1992 against a typical 1993). Measured against all of Saint Tammany County, it is worth more than 40% 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 109 Walnut St, Mandeville, LA?

The 2025 property tax bill for 109 Walnut St, Mandeville, LA was $1,837. The county assessed it at $14,495.

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