Site + foundation
Survey, clearing, grading, drainage, excavation, utilities, foundation and conditions below grade.
What does it really cost
to build a house?
Start with the latest Census contractor-built benchmark. Then separate the house, site, soft costs, local context and reserve—before a single total hides what is missing.
HOME CONSTRUCTION COST CALCULATOR
Build the range before you trust the total.
Start with the Census contractor-built benchmark, then expose locality, finish, complexity and the costs the contract may leave out.
PLANNING RANGE$346,681–$456,159
Typical planning total $401,420 · $201/sq ft including entered additions and reserve.
Range is ±15% around modeled hard construction; entered line items and contingency are held constant.
- Foundation + structurePlanning allocation · not an observed trade quote
- $102,180
- Roof + exteriorPlanning allocation · not an observed trade quote
- $51,090
- Windows + exterior doorsPlanning allocation · not an observed trade quote
- $25,545
- Mechanical, electrical + plumbingPlanning allocation · not an observed trade quote
- $58,388
- Interior finishesPlanning allocation · not an observed trade quote
- $91,232
- Builder overhead + coordinationPlanning allocation · not an observed trade quote
- $36,493
- Contingency reserve
- $36,493
Benchmark: 2025 Census average contract price of $198.33/sq ft for contractor-built single-family houses started. Census says the contract price excludes the improved lot. This planning model is not a builder bid, appraisal, loan decision or promise of final cost.
A house is not one square-foot number.
Use the benchmark as a starting point, then verify every phase against drawings and equal-scope bids.
Structure + dry-in
Framing, roof, exterior walls, windows and exterior doors that create a weather-tight shell.
MEP + enclosure
Mechanical, electrical, plumbing, insulation, air sealing, drywall and required inspections.
Finishes + closeout
Cabinetry, surfaces, fixtures, flooring, paint, testing, corrections and occupancy documentation.
SOURCE + METHOD
What drives this range?
The core calculation multiplies conditioned square feet by the Census 2025 average contract price per square foot, the selected state installation factor, finish factor and complexity factor. It then adds only the separate amounts you enter and a visible contingency.
The low and high results place a ±15% band around modeled hard construction. That band is a HomeCostGrid planning assumption, not a Census confidence interval or prediction.
- Source
- U.S. Census Bureau, Survey of Construction
- Coverage
- U.S. contractor-built single-family houses started in 2025
- Published
- July 1, 2026
- Unit
- Contract price per square foot
- Excluded by source
- Value of improved lot
- Local limitation
- State context is not ZIP-, parcel- or bid-level evidence
Before you use the number.
How much does it cost to build a house per square foot?
The 2025 U.S. Census table reports a $171.57 median and $198.33 average contract price per square foot for new contractor-built single-family houses started. Census excludes the value of the improved lot. Your design, site and contract can differ materially.
Does the calculator include land?
No. Land is excluded. Enter site work, design, permits and utility connections only when they are outside the base construction contract, and avoid double-counting an included line.
Why is this a range instead of one exact price?
Before drawings, soil information, bids and local fees exist, one exact number creates false confidence. The range keeps ordinary scope uncertainty visible while preserving your entered costs.
Is this a builder quote or appraisal?
No. It is a planning model for comparing scope and preparing questions. Only address-specific plans, investigations, written bids and official fee information can support a project budget.
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