Revit API 2021

24,928 pages across 29 namespaces. Cross-version diffs, code snippets, and per-page discussion.

What's New in API 2021

At a glance

New, removed and obsolete are measured against Revit API 2020. Counts are page-by-page (every method overload, member list, and property is its own row). Autodesk's What's New report groups changes by API member, so it usually lists fewer items even when describing the same changes.

  • 24,928 Total pages
  • 1,325 New
  • 90 Obsolete
  • 18 Removed
  • 1,783 Classes
  • 7,336 Methods
  • 8,759 Properties
  • 970 Constructors
  • 5,235 Member lists
  • 633 Enumerations
  • 212 Others

How to navigate

  • Search Shortcut CtrlK to open the search overlay from anywhere on the site.
  • Sidebar Browse namespaces, classes, methods, and properties with advanced search for this version.
  • Versions Switch between Revit API versions on the top bar.