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

Building a house in Fairfield County, Connecticut costs approximately $263 per square foot in 2026 for mid-range construction. A 2,000 sq ft home runs about $526,000.

Is Fairfield County more or less expensive to build in than the rest of Connecticut?

Fairfield County is 15% more expensive than the Connecticut state average. The state average is $229/sq ft while Fairfield County runs $263/sq ft.

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Fairfield County Home Building Costs

Building a house in Fairfield County, Connecticut costs about $263/sq ft in 2026 — roughly $526,000 for a 2,000 sq ft mid-range home (construction only, land excluded). Population: 960,000.

County $/sq ft

$263

Connecticut avg: $229

vs State Average

+15%

Local market premium

2,000 sq ft home

$526,000

Mid-range estimate

Local Market Factors

›NYC commuter zone
›Highest costs in state
›Luxury finishes common

Cost by Home Size in Fairfield County

Home Size	Basic	Mid-Range	Premium
500 sq ft	$97,226	$131,500	$179,064
1,000 sq ft	$194,452	$263,000	$358,128
1,500 sq ft	$291,678	$394,500	$537,191
2,000 sq ft	$388,904	$526,000	$716,255
2,500 sq ft	$486,130	$657,500	$895,319
3,000 sq ft	$583,356	$789,000	$1,074,383
4,000 sq ft	$777,809	$1,052,000	$1,432,511
5,000 sq ft	$972,261	$1,315,000	$1,790,638

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 1.15× applied to Connecticut state average (which itself is 1.28× 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.