New Home Build Cost Calculator
Estimate all-in new-home build budget from lot cost, square footage, finish tier, build method, and regional pricing pressure.
Last updated: 2026-04-13
New home build cost calculator
Enter your values
Compare what a new build may really cost once the lot, the chosen build method, and a site-prep / permits allowance are all included.
All-In New-Build Budget
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Enter lot, square footage, finish, method, and regional assumptions to estimate the all-in cost of a new-home project.
Calculation History(0)
Example calculations
Tap an example to prefill the calculator with sample values.
Suburban stick-built plan
2,600 sq ft mid-range build with an owned lot purchase
A typical owner-occupant feasibility screen where the lot is known and the question is whether a traditional custom build still fits the target budget.
Result: The all-in total crosses the high-six-figure mark once the lot and site / permit allowance are included.
Builder-grade modular comparison
2,100 sq ft modular build in a baseline market
Useful when the lot is secured and the owner is pressure-testing whether modular delivery creates meaningful budget relief.
Result: Modular often narrows vertical cost and site allowance, but the lot still remains a material share of the full budget.
Luxury prefab feasibility
Smaller footprint with premium finish in a high-cost market
A planning case for owners testing whether a compact prefab still stays efficient after premium finishes and a hotter region are layered in.
Result: Higher finish choices can erase part of the prefab advantage even if the method itself stays cheaper than stick-built.
How the new-home build estimate works
The calculator builds an all-in total from three layers: lot cost, vertical construction cost, and a heuristic site-prep / permits allowance based on the selected build method.
It also prices the same inputs through stick-built, modular, and prefab lanes so you can see whether the selected method carries a meaningful premium before you move into design and lender conversations.
New-home build FAQs
Use these answers to interpret the lot share, method comparison, and site-prep assumptions realistically.
What is included in the all-in new-build number?
The model includes lot cost, vertical construction cost, and a heuristic allowance for site prep plus permits. It is meant to answer feasibility questions early, not to recreate a full lender or contractor budget workbook.
Why can modular or prefab look cheaper than stick-built?
Because the baseline vertical cost and site-prep allowance are often lower in more standardized delivery methods. That does not mean the cheaper option is always better for every site, finish package, or lender requirement.
Does lot cost always dominate the total?
Not always. In lower-cost land markets, the vertical build budget can be the majority of the project. In supply-constrained metros, the lot can easily become a much larger share of the all-in number.
Are site prep and permit numbers exact?
No. They are directional allowances. Real site work and permitting can vary sharply with grading, utilities, soils, drainage, local impact fees, and jurisdiction-specific code requirements.
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</script> Related tools
Pair new-build feasibility with construction budgeting, renovation comparison, and closing-cost planning.
Construction Cost Calculator
Zoom in on the core hard-cost and range assumptions behind the build budget.
Home Renovation Cost Calculator
Compare new-build economics with major remodel economics on an existing home.
Closing Costs Estimator
Add settlement-cost planning if the lot or finished home will be financed in a transaction.
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Planning note
This calculator is an early feasibility screen only. It is not a contractor quote, lender commitment, or permit-cost schedule.
Actual project totals can change materially because of land conditions, design choices, utility work, engineering, code requirements, procurement timing, and contractor selection.