Mariners Harbor / Graniteville
North ShoreBalanced
▼ Cooling
Composite score combining supply, pricing dynamics, and speed
Mariners Harbor / Graniteville is a balanced market. Homes sell in 70 days on average, 1% under asking.
Market Metrics
Pricing
Median Sale Price
$571K
↑ +0.1%YoY
Avg $/Sq Ft
$381
Sale-to-List Ratio
99.4%
% Over Asking
0.4%
% With Price Cuts
N/A
Speed
Median Days on Market
70 days
Sold in <14 Days
0.0%
Sold in <30 Days
N/A
Supply
Active Inventory
30
New Listings
N/A
Months of Supply
0.8
Absorption Rate
120.0%
Volume
Homes Sold
36
Adjust Assumptions
Mariners Harbor / Graniteville median: $570,694
Required in FEMA flood zones. Not all areas of SI need this.
Monthly Cost Breakdown
Zone AE — $2,000-$5,000/yr
Express Bus
$47,507/yr
Estimates for planning purposes. Actual costs may vary. Property tax uses a ~1% approximation; NYC assessments differ. Flood insurance ranges reflect typical NFIP premiums.
Price Trends
Median Sale Price
Avg Price Per Sq Ft
Days on Market
Median Days on Market
Sale-to-List Ratio
Sale-to-List Ratio
Supply & Demand
Supply & Demand
Property Types & Price Distribution
Property Types
Price Distribution
Flood Risk Assessment
Primary FEMA Zone
Zone X (minimal flood hazard)
Est. Annual Flood Insurance
$400 – $800 / year
Mariners Harbor has some tidal wetland areas near the Arthur Kill. Graniteville is mostly elevated and low-risk.
Look up your address on FEMA Flood Map ServiceRecent Sales
| Address | Sale Price | Sq Ft | $/Sq Ft | Land Sq Ft | Year Built | Sale Date▼ | Type | Units |
|---|---|---|---|---|---|---|---|---|
| $643,000 | 1,500 | $429 | 2,500 | 1993 | Dec 22, 2025 | Single Family | 1 | |
| $525,000 | 1,300 | $404 | 1,100 | 1910 | Dec 8, 2025 | Two/Three Family | 2 | |
| $550,000 | 1,834 | $300 | 5,500 | 1915 | Dec 3, 2025 | Single Family | 1 | |
| $585,000 | 1,056 | $554 | 3,813 | 1955 | Dec 3, 2025 | Single Family | 1 | |
| $470,000 | 648 | $725 | 2,500 | 1925 | Dec 2, 2025 | Single Family | 1 | |
| $685,000 | 1,332 | $514 | 4,266 | 1915 | Nov 25, 2025 | Single Family | 1 | |
| $585,000 | 1,152 | $508 | 2,850 | 1899 | Nov 20, 2025 | Single Family | 1 | |
| $620,000 | 1,144 | $542 | 11,662 | 1965 | Nov 20, 2025 | Single Family | 1 | |
| $675,000 | 1,620 | $417 | 2,750 | 2004 | Nov 17, 2025 | Two/Three Family | 2 | |
| $740,000 | 1,600 | $463 | 3,238 | 2004 | Nov 12, 2025 | Two/Three Family | 2 | |
| $616,970 | — | — | 2,225 | — | Nov 7, 2025 | Vacant Land | 0 | |
| $616,970 | 1,407 | $439 | 2,233 | 1920 | Nov 7, 2025 | Two/Three Family | 2 | |
| $550,000 | 1,200 | $458 | 1,062 | 1998 | Nov 6, 2025 | Single Family | 1 | |
| $420,000 | 1,568 | $268 | 2,575 | 1988 | Nov 6, 2025 | Single Family | 1 | |
| $504,700 | 1,403 | $360 | 2,178 | 1991 | Oct 31, 2025 | Single Family | 1 | |
| $720,000 | 1,590 | $453 | 3,824 | 2014 | Oct 29, 2025 | Single Family | 1 | |
| $499,999 | 1,050 | $476 | 1,750 | 1965 | Oct 27, 2025 | Single Family | 1 | |
| $765,000 | 2,392 | $320 | 5,130 | 1965 | Oct 22, 2025 | Single Family | 1 | |
| $600,000 | 1,232 | $487 | 2,898 | 2004 | Oct 20, 2025 | Single Family | 1 | |
| $600,000 | 1,300 | $462 | 1,360 | 2000 | Oct 17, 2025 | Single Family | 1 | |
| $517,500 | 1,150 | $450 | 3,977 | 1960 | Oct 17, 2025 | Single Family | 1 | |
| $250,000 | 1,089 | $230 | 3,540 | 1920 | Oct 16, 2025 | Two/Three Family | 2 | |
| $615,000 | 1,760 | $349 | 3,605 | 1925 | Oct 14, 2025 | Single Family | 1 | |
| $773,870 | 2,802 | $276 | 2,853 | 2023 | Oct 10, 2025 | Single Family | 1 | |
| $353,244 | 1,200 | $294 | 1,316 | 2001 | Oct 8, 2025 | Single Family | 1 |
Showing 25 of 100 sales
Neighborhood Profile
Population
27,400
Median Income
$50,000
Owner-Occupied
38.0%
Median Age
34.0
Owner vs Renter
Ferry service available from St. George only
Via Verrazzano-Narrows Bridge
Estimated one-way travel times to Lower Manhattan during weekday rush hour.