Free real estate and construction calculators
Build faster cost visibility.
Detailed browser-based tools for office-to-residential conversion, multifamily planning, construction cost, capitalization rate, net operating income, development yield, debt coverage, parking, land basis, rent analysis, area efficiency, and break-even occupancy.
Calculators
All twelve calculators are on this homepage. Each one is built to do more than simple arithmetic. They separate assumptions, line items, decision signals, and interpretation so you can screen real development and acquisition questions faster and more intelligently.
About
BuildMath is a planning-level toolset. It is meant to help surface the next serious question, not replace a construction estimate, lender model, code study, appraisal, or professional opinion.