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

Building a house in Polk County, Iowa costs approximately $171 per square foot in 2026 for mid-range construction. A 2,000 sq ft home runs about $342,000.

Is Polk County more or less expensive to build in than the rest of Iowa?

Polk County is 10% more expensive than the Iowa state average. The state average is $155/sq ft while Polk County runs $171/sq ft.

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Polk County Home Building Costs

Building a house in Polk County, Iowa costs about $171/sq ft in 2026 — roughly $342,000 for a 2,000 sq ft mid-range home (construction only, land excluded). Population: 490,000.

County $/sq ft

$171

Iowa avg: $155

vs State Average

+10%

Local market premium

2,000 sq ft home

$342,000

Mid-range estimate

Local Market Factors

›Des Moines
›Most expensive in state
›Growing tech sector

Cost by Home Size in Polk County

Home Size	Basic	Mid-Range	Premium
500 sq ft	$63,215	$85,500	$116,426
1,000 sq ft	$126,431	$171,000	$232,851
1,500 sq ft	$189,646	$256,500	$349,277
2,000 sq ft	$252,862	$342,000	$465,702
2,500 sq ft	$316,077	$427,500	$582,128
3,000 sq ft	$379,293	$513,000	$698,553
4,000 sq ft	$505,723	$684,000	$931,404
5,000 sq ft	$632,154	$855,000	$1,164,255

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 1.10× applied to Iowa state average (which itself is 0.87× 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.