Those three points usually leave people mazed and mixed-up, not sure of what they mean, which one is used for what purpose, and where to find them. But that’s okay, no worries, i told you; we’ve got you untangled in seconds.

Let’s look at each one of them in detail.

Project Base Point

  • Definition: It is a reference point that defines the origin of the project coordinate system (0,0,0).
  • Usage: It is used as a reference point for internal purposes such as:
    1. Placing internal dimension that are relative to the building.
    2. Setting the angle difference between True North & Project North.
    3. Referencing measurements across the site to it.

undefined Survey Point

  • Definition: It is a defining point for the origin of the survey coordinate system, that provides a real world context for the model.
  • Usage: It is used as an identification point to a real world location near the model, which helps in:
    1. Identifying a corner of the project site or property lines intersection.
    2. Creating a coordinate system that is shared across multiple linked Revit files.
    3. Setting a reference for the location that is very helpful when exporting and importing.


  • Definition: It is an internal, invisible and unmovable point that act as the basis of positioning all elements in the model.
  • Usage: It is used as an internal referencing point that is useful in:
    1. Aligning the imported or linked model, by setting the positioning option to Auto – Origin to Origin or Manual – Origin to Origin .
    2. Spotting coordinates, by modifying the spot coordinate type properties, and then changing the coordinate parameter to relative.

Looking forward to telling you more about those points in the upcoming post!

Oh, and one more thing; I think you should check out Autodesk. They have the perfect tools to make your work easier and better. Follow my invitation link, purchase a subscription, and earn a cash reward of up to $75!

12 thoughts on “Revit Project Base Point, Survey Point & Internal Origin, Get to know them!

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