How much does it cost to build a house in Middlesex County?

Building a house in Middlesex County, New Jersey costs approximately $255 per square foot in 2026 for mid-range construction. A 2,000 sq ft home runs about $510,000.

Is Middlesex County more or less expensive to build in than the rest of New Jersey?

Middlesex County is 8% more expensive than the New Jersey state average. The state average is $236/sq ft while Middlesex County runs $255/sq ft.

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Middlesex County Home Building Costs

Building a house in Middlesex County, New Jersey costs about $255/sq ft in 2026 — roughly $510,000 for a 2,000 sq ft mid-range home (construction only, land excluded). Population: 860,000.

County $/sq ft

$255

New Jersey avg: $236

vs State Average

+8%

Local market premium

2,000 sq ft home

$510,000

Mid-range estimate

Local Market Factors

›Central NJ
›Pharma industry drives skilled labor costs

Cost by Home Size in Middlesex County

Home Size	Basic	Mid-Range	Premium
500 sq ft	$94,269	$127,500	$173,617
1,000 sq ft	$188,537	$255,000	$347,234
1,500 sq ft	$282,806	$382,500	$520,851
2,000 sq ft	$377,074	$510,000	$694,468
2,500 sq ft	$471,343	$637,500	$868,085
3,000 sq ft	$565,612	$765,000	$1,041,702
4,000 sq ft	$754,149	$1,020,000	$1,388,936
5,000 sq ft	$942,686	$1,275,000	$1,736,170

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 1.08× applied to New Jersey state average (which itself is 1.32× the national average of $179/sq ft).

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Cost data: HouseBuildCalc Permit Cost Index (876,000+ building permits, 1,700+ ZIP codes), U.S. Census Bureau Survey of Construction, BLS Producer Price Index, NAHB Cost of Constructing a Home (published summaries). County-level multipliers are estimates derived from regional market data. For planning purposes only.