Free template
Home build cost breakdown: the spreadsheet that thinks along.
16 trades, 64 items, sum formulas and warnings on the notorious budget breakers — cleanly formatted, no macros, no email required. And when you are ready, BOB opens the file automatically as a living cost plan.
No newsletter, no account, no catch.
Spreadsheet today, BOB tomorrow
Fill in
Planned amounts in column C, vendors in column D. Subtotals and total calculate themselves.
Upload
When the spreadsheet stops sufficing: import the file into BOB. The template is recognised by its hidden marker — no mapping step.
Build on
From then on: documents by photo, the payment guard before every payment, monthly liquidity. Your spreadsheet is the starting point, not lost work.
16 trades with 64 items — from plot and ancillary costs through groundworks, shell and building services to outdoor works and reserve. With subtotals per trade, a grand total, and warnings on the items that most often break budgets according to the POCASIO 2023 survey (groundworks, outdoor works, electrics).
Because a good cost breakdown is the first step to a healthy build, and because we believe you will try BOB voluntarily once the spreadsheet limits annoy you: no photo capture, no payment guard, no liquidity line. The template works fully without BOB.
Deliberately not. Serious amounts depend on region, plot and finish — flat values in templates are almost always wrong. Use the cost calculator for a sourced range and enter your quotes as you get them.
Upload the filled (or empty) file in the project import. BOB recognises its own template automatically via a hidden marker sheet and takes over trades, items and amounts without a mapping step — including vendors from column D.
Yes — it is a standard XLSX with plain sum formulas, no macros. Excel, LibreOffice, Numbers and Google Sheets open it fine; the BOB auto-detection survives saving in those apps too.