COST TO BUILD
A HOUSE
Custom Line-Item Estimates for Your House Plan
Try before you buy, demo a cost to build report
Order a custom online Cost To Build Report!
Specific to your house plan and your local building lot zip code. After you LOGIN you can make selections, choices, changes and adjustments to develop a "line-item Cost to Build Report".
Need help? Watch our video on how to get your custom Cost to Build Report
See how we compare to the rest.
Our ReportsOur Construction Cost Calculator, powered by StartBuild eliminates the guesswork of estimating construction costs. Our state of the art estimator is based on years of experience in the industry, and is continuously updated with current costs for materials and labor.
It's Accurate & Up to date.
Our estimator accounts for the house plan, location, and building materials you choose, with current market costs for labor and materials.
It's Fast & Flexible.
Receive a personal estimate in two business days or less, with 60 days to change your options.
It's Inexpensive.
For just $32.95 for internet home plans and $49.95 for custom plans, you can have the security of knowing how much it will cost to build your home - before the first nail is hammered!
For just $32.95 you get:
- Customized Budget for YOUR online house plan
- Unlimited access for 60 days
- Ability to Export to Excel or PDF
For just $49.95 you get:
- Upload and store your plan files
- Customized Budget for YOUR build
- Unlimited access for 60 days
- Ability to Export to Excel or PDF
If you've found a house plan that you like, simply copy the URL / Link to it, paste it in the box above and hit "GO".
You'll be taken to a page where you can answer a few quick questions and order your report.
Just drag your plan files from your computer into the box above and hit "GO".
You'll be taken to a page where you can answer a few quick questions and order your report.
We use the data from your house plan plus a few other questions
Then you can see how questions to our 60+ line item costs affect your overall build cost.
See changes to your budget in real time
Export to PDF or Excel
60+ Line Items
Only 20+ Line Items
6 pages
Only 1-2 pages
Where do you get the costing data?
The construction cost calculator is powered by StartBuild technology.
StartBuild uses a blended costing database that includes published national, regional, state, zip code, and actual builder costs for finished homes. Costs and data are updated 10 to 12 times a year to reflect current labor and material market conditions.
StartBuild has been providing Cost To Build reports for new homes for nearly 20 years.
What does the Cost To Build report include?
The report covers 60+ line items across every major phase of construction: site work, foundation, framing, roofing, exterior finishes (siding, windows, doors), plumbing, electrical, HVAC, insulation, drywall, and interior finishes (cabinets, countertops, flooring, tile, trim, and paint).
Each line item is priced to your build zip code and the material choices you select. You can adjust selections and see the impact on your total in real time, then export the finished report to PDF or Excel.
How long does it take to get my report?
Reports are typically ready within 2 business days. Once you receive access, you have 60 days to log back in, adjust your selections, and export updated versions as many times as you need — all included in the original price.
How accurate is the report?
We work to be conservative and accurate to within 10%. Your choices, changes, and adjustments will also have an important impact on the line item costs.
We strive to provide a good starting point construction cost estimate for your new home project, but you should also seek real bids and quotes from builders, subcontractors, and suppliers to finalize your construction budget before you start building.
What house plan websites do you work with?
We work with most major house plan websites — including HousePlans.com, ePlans, Architectural Designs, Dream Home Source, Donald A. Gardner, The Plan Collection, and dozens of others. If you can paste the URL of your plan page, we can usually pull the plan data automatically.
If your plan isn't from a supported website, you can upload your PDF plan files directly and we'll generate a line-item estimate from those.
What if I don't have a URL or link to my house plan?
No problem — you can upload your plan files (PDF or other common formats) directly when you order. If you need additional help, use the Contact Us button at the top of the page and someone from our staff will reach out to hear about your plan and walk you through the process.
Do you support barndominiums and metal building homes?
Yes. Barndominium and metal building plans are fully supported. Whether you have a plan from a barndominium designer or a metal building manufacturer, you can paste the URL or upload the plan files to get a line-item cost estimate. Barndominium reports start at $39.95 for online plans.
What locations do you cover?
We cover all 50 U.S. states. Costs are localized to your build zip code using a database of regional labor and material costs that is updated 10–12 times per year, so the estimate reflects current conditions in your specific market rather than a national average.
Can I adjust my selections after I order?
Yes. You have 60 days of unlimited access after purchase. You can change foundation type, finish level, material choices, and other selections and see how each change affects your line-item totals in real time. You can export updated versions to PDF or Excel as many times as you need within that 60-day window.
Can I use the report for a construction loan or bank financing?
Many customers use the Cost To Build report as a starting point for construction loan conversations. The detailed, line-item breakdown gives lenders a more credible picture of projected costs than a rough per-square-foot estimate.
That said, most lenders will also require bids from licensed contractors before approving a loan — the report is a planning and budgeting tool, not a contractor quote. Check with your lender about their specific documentation requirements.
How is a Cost To Build report different from a contractor quote?
A Cost To Build report is a detailed planning estimate — it tells you what a home like yours should realistically cost to build in your area based on current market data. A contractor quote is a binding bid from a specific builder for a specific project.
The report is most useful before you have a builder: it helps you set a realistic budget, compare plan options against each other, and enter contractor conversations with informed expectations rather than guessing.
What does it really cost to build a house?
The honest answer is: it depends — on your plan, your location, your lot, and dozens of line items that most online calculators never show you. Published averages range from $100 to $400+ per square foot in 2026, and both ends of that range are real for different projects. Two homes with identical square footage can land $150,000 apart based on foundation type, finish level, and site conditions alone.
That's the problem with searching for a single “average cost to build a house.” The number that matters is the one tied to your specific plan in your specific location — and that number requires a detailed, line-item estimate, not a statewide average.
What drives construction costs up (and down)
Location & local labor
Labor rates vary significantly by state, county, and metro area. Building in a high-demand market with tight subcontractor availability costs more than building in a rural area with competitive bidding.
Foundation type
Slab, crawl space, or full basement — each has a different cost. In frost-prone climates, foundation decisions have a meaningful impact on both upfront cost and long-term performance.
Plan complexity
A compact rectangle costs less per square foot than a plan with complex rooflines, multiple bump-outs, tall great rooms, or large spans requiring engineered beams.
Finish level
Cabinets, countertops, flooring, windows, and fixtures can swing a budget by $30–$80 per square foot. This is where “average” estimates most often mislead.
Site conditions
Clearing, grading, rock excavation, long utility runs, and well or septic installation can add tens of thousands before the foundation is even poured.
Permit & soft costs
Permit fees, engineering, surveys, inspections, and financing carry costs are real budget items that many estimates leave out entirely.
Nearly 20 years of cost-to-build data
CostToBuildAHouse.com is powered by StartBuild, which has been producing detailed construction cost reports for homeowners, builders, and appraisers since the mid-2000s. Our database is updated 10 to 12 times per year with current material and labor costs at the national, regional, state, and zip code level.
The result is a line-item report tied to your actual house plan — not a square-footage multiplier. You can adjust foundation type, finish level, and building location online, and see exactly how each choice affects the bottom line before you break ground.
For $32.95, it's the most affordable way to get a realistic construction budget before committing to bids, loans, or design changes. See how it works →
Cost to build a house by state
Explore 2026 cost breakdowns for your state — labor rates, regional differences, and what to budget for your specific project.
Construction cost guides
Deep dives into the line items that move your budget the most.