Build vs. Buy Calculator

The build-vs-buy decision is one of the most significant financial choices a homeowner makes. In 2026, the answer varies dramatically by state, budget, and personal priorities.

In high-cost coastal markets like California, New York, and Massachusetts, existing home prices have risen so dramatically that new construction — despite higher upfront costs — often produces a better value per square foot with modern amenities and zero deferred maintenance.

In Sun Belt markets like Texas, Georgia, and the Carolinas, a large contractor base and competitive labor markets mean building can be surprisingly affordable, often matching or beating existing home prices while delivering a fully customized product.

Hidden Costs of Building

• Land purchase (typically 15–25% of total project cost)
• Architect and engineering fees (7–12% of construction cost)
• General contractor overhead and profit (10–20%)
• Construction loan interest during the build period
• Permits, impact fees, and utility hookups ($3K–$25K+)
• Landscaping, driveway, and site work
• 10–15% contingency for cost overruns (almost always needed)

Land is usually the single biggest cost this calculator and our state pages leave out. FHFA research data (base-year-2015 estimates, most recently updated June 2024) put average residential land value per acre well into the hundreds of thousands of dollars in high-cost states like California, New York, and Hawaii — versus tens of thousands of dollars per acre in much of the rural South and Midwest — with land representing over half of total property value in the priciest coastal markets. These are dated reference estimates, not current asking prices, but they illustrate why a construction-only estimate can understate the true cost of building by a wide margin. See our methodology page for the source and vintage.

Lot choice carries one factor that never shows up in a construction estimate: school district assignment. District boundaries frequently cut across city and even neighborhood lines, so two lots a few streets apart can feed entirely different schools — which affects both daily life and resale demand. It is worth confirming the assigned district for a specific address before you commit to a parcel; our sister site SchoolDistrictFinder looks up district assignment and ratings by ZIP code.

Hidden Costs of Buying

• Inspection issues and deferred maintenance
• Renovation costs to match your preferences
• Older systems (HVAC, roof, plumbing) with limited lifespan
• Higher ongoing energy costs in older, less-efficient homes
• HOA fees in many established neighborhoods
• Closing costs (2–5% of purchase price)