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Single Family ResidenceResidential
$246,950$158 / 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 90How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $255,000 on May 23, 2024

309 GRAND ISLE CT

SLIDELL, LA 70461
0
Baths
1,562 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
2019
Year BuiltThe year the home was originally built, according to county records.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$247K
$223K low$271K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$255,000 · May 23, 2024
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$0
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$0
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.100%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$250,381
UNITED WHOLESALE MORTGAGE · recorded May 23, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,740 (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.$22,244 (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.$19,244
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$21,220
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$222,437

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.50
39
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
57
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.
59
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.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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.0.20
HeatingThe type of heating system in the home.None

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.

H
Salmen High SchoolD+
High · Grades 9–12 · 2.9 mi
E
W.L. Abney Elementary SchoolC-
Elementary · Grades 1–5 · 3.1 mi
M
St. Tammany Junior High SchoolD+
Middle · Grades 6–8 · 3.7 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

309 Grand Isle Ct 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 more per square foot than 84% of homes in Slidell 70461
  • Smaller than 78% of homes in Slidell 70461
  • Has a smaller lot than 88% of homes in Saint Tammany County
  • Newer than 93% of homes in Saint Tammany County

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
$88K$785K

This home is worth more than 45% 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$246,950
CheaperTypical $260,796Pricier

Pricier than 45% of homes nearby

Price per ft²$158
CheaperTypical $129Pricier

Pricier than 84% of homes nearby

Living area1,562 ft²
SmallerTypical 2,065 ft²Bigger

Bigger than 22% of homes nearby

Lot size0.2 ac
SmallerTypical 0.26 acBigger

Bigger than 48% of homes nearby

Year built2019
OlderTypical 2000Newer

Newer than 85% of homes nearby

How 309 Grand Isle Ct ranks against every home in each area.
MeasureThis homeSlidell 70461Saint Tammany County
Estimated valuepricier than$246,95045% of homes41% of homes
Price per ft²pricier than$15884% of homes55% of homes
Living areabigger than1,562 ft²22% of homes29% of homes
Lot sizebigger than0.2 ac48% of homes12% of homes
Year builtnewer than201985% of homes93% of homes

About 309 Grand Isle Ct

How much is 309 Grand Isle Ct, Slidell, LA worth?

The TopHap Estimate for 309 Grand Isle Ct, Slidell, LA is $246,950 as of Jul 14, 2026. The likely range is $222,630 to $271,270. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 309 Grand Isle Ct, Slidell, LA last sell?

309 Grand Isle Ct, Slidell, LA last sold on May 23, 2024 for $255,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 309 Grand Isle Ct, Slidell, LA?

309 Grand Isle Ct, Slidell, LA has 1,562 square feet of living space and a 0.20-acre lot.

When was 309 Grand Isle Ct, Slidell, LA built?

309 Grand Isle Ct, Slidell, LA was built in 2019, making it 7 years old.

What schools serve 309 Grand Isle Ct, Slidell, LA?

309 Grand Isle Ct, Slidell, LA is assigned to Salmen High School (high), rated D+; W.L. Abney Elementary School (elementary), rated C-; St. Tammany Junior High School (middle), rated D+. All sit in St. Tammany Parish School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 309 Grand Isle Ct, Slidell, LA compare to other homes in Slidell 70461?

Among the 11,840 homes in Slidell 70461, it is worth more than 45% of them ($246,950 against a typical $260,796), its price per square foot is higher than 84% of them ($158 against a typical $129), it is bigger than 22% of them (1,562 ft² against a typical 2,065 ft²), its lot is bigger than 48% of them (0.2 ac against a typical 0.26 ac) and it is newer than 85% of them (2019 against a typical 2000). Measured against all of Saint Tammany County, it is worth more than 41% 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 309 Grand Isle Ct, Slidell, LA?

The 2025 property tax bill for 309 Grand Isle Ct, Slidell, LA was $3,740. The county assessed it at $22,244.

Closest homes

More homes in Slidell 70461

Assigned schools

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