Load a tag for the category, then click Annotate tab › Tag panel › Tag All. Pick the categories and click OK to tag every visible element in the view that has no tag. For one at a time, use Tag by Category (TG).
Or, just ask Mira, a free add-in, to tag untagged doors and explain any it skipped.
How to do it in Revit
Step 1: Load the tags you need
Tag All only places tags that are loaded in the project. Open the Annotate tab › Tag panel drop-down, click Loaded Tags and Symbols, then Load, and pick the tag family, such as a door tag. The last tag loaded for a category becomes its default (Autodesk Help: Load a Tag or Symbol Style).
Step 2: Open the view to tag
Tags belong to one view, so open the plan, section or ceiling plan you want tagged. To tag only part of it, select those elements first. With nothing selected, Tag All looks at the whole view.
Step 3: Start Tag All
Click Annotate tab › Tag panel › Tag All. In Tag All Not Tagged, choose All objects in current view or Only selected objects in current view, and tick Include elements from linked files to tag a linked model too (Autodesk Help: Tag All Not Tagged).
Step 4: Pick the categories
Select one or more categories in the list, such as door tags and window tags, to tag them in one pass. In Revit 2027 the list follows Loaded Tags and Symbols, and a Multi-Category tag can be a category's default.
Step 5: Set leaders and orientation
Tick Leader and enter a Leader Length if each tag needs one, and set Tag Orientation to Horizontal or Vertical. Click OK, and Revit tags the untagged elements of those categories.
Step 6: Turn a hidden tag category on
If the tag category is turned off in the view, Revit offers to turn it on; click OK. If the view template hides it, Revit opens Assign View Templates so you can turn it on or remove the template, or the new tags won't show.
Step 7: Tag the rest one at a time
Click Annotate tab › Tag panel › Tag by Category (TG). Set orientation and Leader on the Modify | Tag tab or the Properties palette, then click each element (Autodesk Help: Tag by Category).
Step 8: Tag new elements as you place them
When you place doors or windows, check that Tag on Placement is highlighted on the Modify | Place <Element> tab › Tag panel. Each new one gets its tag as it goes in.
What to watch for
Tag All works one view at a time. An element tagged in the floor plan is still untagged in the ceiling plan or an enlarged plan. Autodesk's own example is tagging rooms again in a reflected ceiling plan.
Hidden means skipped. Tag All tags visible elements only, so a door hidden in the view, outside the crop region or outside the view range gets no tag. When a count looks low, check what's hidden in the view and the view range.
Dependent views share tags. Annotation added to a primary view shows in its dependent views, and the other way round, so tag the primary view once instead of each part.
A blank tag usually means a blank value. A tag shows the element's parameters, such as a door's Mark, so an empty door tag usually points to an empty Mark rather than a missing tag. Filling those values across many doors is quicker in a schedule.
Linked tags remember their host. Tags on linked elements need Include elements from linked files. A tag that loses its linked host remembers it, and re-hosts when the element is available again.
Tags drift across a set. A set can hold dozens of floor plans, enlarged plans and ceiling plans, each tagged by hand at a different point in the project. A door added late gets tagged in one plan and missed in three, and it's easy to miss until review. Finding untagged elements view by view is the repetitive part an AI agent for Revit can take on, with you approving each change.
Or, just ask Mira to do it.
Mira is an AI thinking partner for Revit that automates the work you repeat and builds tools your team needs.
- Type this in Mira
Tag every untagged door in all floor plans, and tell me why any were skipped.
Mira lists the floor plans and asks which to tag before it places anything, leaving out dependent views that already show their primary plan's tags. Placing tags needs a small tool Mira writes, which asks Allow first. It names every door it skipped and why, such as hidden in that plan or in a linked model.
How do I tag all elements in Revit at once?
Why is Revit Tag All not working?
Can I tag all elements in multiple views at once in Revit?
How do I tag elements in a linked model in Revit?
How do I load a tag in Revit?
What is the shortcut for tagging in Revit?
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Try it yourself.
Or bring it to the firm.
The download is free and takes a minute. The firm conversation is where your standards, your library, and your rollout get built. Start wherever makes sense.