Resources
Tools for the people who build and bill.
Free, practical material for PMs, project accountants and CFOs. No signup wall. Use it on your jobs today, whatever software you run.
82 terms
Construction glossary
RFIs to retainage, WIP to webhooks. Plain-English definitions with worked examples and the mistakes that cost money.
Browse the glossary →InteractiveCalculators
Retainage, over/under billing (WIP), change order markup and estimate at completion. Do the math once, correctly, and see how it moves.
Open the calculators →6 free filesTemplates
Change order log, RFI log, lien waiver tracker, SOV starter and printable checklists for closeout and month-end WIP.
Download templates →5 minutesStack assessment
How many tools touch one change order before it reaches the pay app? Score your stack and see where data gets re-keyed.
Take the assessment →From the blog
Field notes on running construction on one record
Read the blog →Product docs · Preview
How os.construction is being built, module by module
Browse the docs →Want this math done for you, on live job data?
We're building os.construction with founding contractors: PM, accounting and analytics on one data core.