Free calculators
Free Arizona Home-Building Calculators
Planning a new home in Yuma County or elsewhere in Arizona? These four free calculators handle the construction math: what the house costs, what it costs to hold the lot while you build, how long permits take, and how building compares with buying. Every default links to a public source or is clearly marked as an assumption you can edit.
Arizona New-Build Cost Estimator
Estimate hard cost, site work, fees, design, and contingency for a new single-family home in any Arizona county.
All-in cost and a planning range, plus cost per conditioned square foot.
Open calculatorArizona Permit Timeline Estimator
Estimate review time for a new-home permit in Yuma County and other Arizona jurisdictions, then add build time.
Calendar days to permit in hand, plus a completion window.
Open calculatorLot Carry Cost Calculator
Estimate property tax, insurance, and loan interest while you hold a lot through permitting and construction.
Total carry, a monthly average, and the cost of one extra build month.
Open calculatorBuild vs Buy Calculator
Compare the all-in cost of building a new home on a lot with buying a comparable existing home.
The dollar difference, cost per square foot, and a break-even hard-cost rate.
Open calculatorHow the tools fit together
How the defaults are sourced
A Sourced value was taken from the linked public page. A Derived value was calculated from sourced data by the method in that row. An Editable assumption has no verified public source, so the badge sits next to the input and you can change it. Sources last verified: 2026-10-18. Re-verify every source at least yearly. Phoenix publishes permit figures monthly, so re-check those quarterly.
Educational estimates only. These are not bids, appraisals, tax, legal, lending, or insurance advice. Costs and review times vary. Verify every input with licensed professionals and your local building department.