Nassau County Home Building Costs
2026 construction cost estimates for Nassau County, New York. Population: 1,370,000.
County $/sq ft
$334
New York avg: $278
vs State Average
+20%
Local market premium
2,000 sq ft home
$668,000
Mid-range estimate
Local Market Factors
- ›Long Island suburb
- ›NYC labor spillover
- ›High demand, limited land
Cost by Home Size in Nassau County
| Home Size | Basic | Mid-Range | Premium |
|---|---|---|---|
| 500 sq ft | $123,473 | $167,000 | $227,404 |
| 1,000 sq ft | $246,947 | $334,000 | $454,809 |
| 1,500 sq ft | $370,420 | $501,000 | $682,213 |
| 2,000 sq ft | $493,894 | $668,000 | $909,617 |
| 2,500 sq ft | $617,367 | $835,000 | $1,137,021 |
| 3,000 sq ft | $740,840 | $1,002,000 | $1,364,426 |
| 4,000 sq ft | $987,787 | $1,336,000 | $1,819,234 |
| 5,000 sq ft | $1,234,734 | $1,670,000 | $2,274,043 |
Costs are estimates only and represent construction costs, excluding land, architect fees, permits, and landscaping. Add 30–40% to these figures for total project cost.
County multiplier of 1.20× applied to New York state average (which itself is 1.48× the national average of $188/sq ft).