
Datum Tools
Pre-Design Tool Kit
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Free
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About
Datum is built and tested with licensed architects and active developers.
Datum Tools is a suite of tools for architects, developers, brokers, bankers, students, teachers, and more. Use Datum to estimate the cost of a project, the architecture fee, what a site can hold, what code requires, and more.
Build: Quickly study building scale, site capacity, FAR, parking analysis, and building heights and construction types.
Code: Understand construction type and framing (wood, steel, concrete), egress stair counts, and plumbing fixture counts easily, cited to the IBC.
Cost: Quickly understand order-of-magnitude cost and market-based estimates, exportable as a PDF. The tool will rough estimate a host of building types.
Optimized for the planning stages of design and development.
Terms of Use: https://datumtools.org/terms.html
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What's New in Datum Tools
2.1
September 17, 2026
Financing, new in Cost Estimator - Loan sizing, bank break-even rent, Yield on Cost, Debt Yield, and a reverse "rent needed for your target yield" calc — all on the main cut sheet and in the PDF, with a rent-comparison chart. - Hotel's soft-cost breakdown now shows the real FF&E/soft-cost/pre-opening split instead of a generic, mislabeled category list.
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Subscriptions & In-App Purchases
Monthly Unlock
Unlocks every Datum Tools calculator, billed monthly.
$2.991 Month






