Revit 2027 New Feature: Rule-Based Numbering

Why It Matters

Automated, rule‑based numbering standardizes element IDs, cutting manual effort and errors across BIM projects.

Key Takeaways

• Revit 2027 adds integrated rule‑based numbering tool directly.
• Users can auto‑number doors by room number via filters.
• Partitioning groups elements using the room number parameter.
• Custom formatting supports letters, separators, and unique identifiers.
• New elements inherit numbering automatically, eliminating need for scripts.

Summary

Revit 2027 introduces an integrated rule‑based numbering tool that replaces the need for external scripts and add‑ins when assigning identifiers to BIM elements. The feature lives under the Manage → Numbering menu, where users create templates, apply view filters (e.g., excluding doors with a specific comment), and select the Mark parameter as the target field.

The workflow hinges on partitioning, which groups elements by a chosen property—in the demo, the two‑room number parameter. Number formatting lets users prepend a unique uppercase letter, insert the room number, and add a separator such as an underscore, producing values like “102_C”. Once applied, any new door automatically receives the correct sequence without manual intervention.

The video highlights a live example: doors are instantly labeled “102_C” after the rule is saved, demonstrating the tool’s real‑time responsiveness. The presenter notes that the system updates automatically as the model evolves, removing the recurring need to rerun custom scripts.

For firms, this means faster project setup, consistent element identification across large models, and reduced reliance on third‑party automation. The feature aligns with BIM best practices by embedding standards directly into Revit, potentially lowering training overhead and improving data quality.

Original Description

This is the best new feature in Revit 2027: you can now set rules to automatically number elements based on specific constraints.

In this video, we number doors based on the room they are placed in.

Read the full blog post here: https://www.bimpure.com/blog/revit-2027

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