Glossary
Plain-language definitions of the terms you'll see in the editor, help center and billing pages.
Last reviewed Oct 22, 2026 · v1
A
- Advisory
- Design guidance (such as a tight walkway) that you may choose to accept. Not a building-code check. Compare Collision.
- Asset library
- Your workspace's uploaded files — images, textures and 3D models — available to its projects.
C
- Calibration ruler
- A printed scale bar on PDF exports. Measure it with a real ruler to confirm the sheet printed to scale.
- Centreline
- An imaginary line through the middle of a wall's thickness. Gross area is measured to centrelines.
- Clear (inside) dimension
- The distance between the inner faces of walls — the space you can actually use.
- Collision
- Two things occupying the same space, like a sofa through a wall or a door swinging into a table. Compare Advisory.
D
- Demolish (phase)
- Marks a wall or item that will be removed in a renovation. Shown dashed and red.
E
- Existing (phase)
- Marks what's there today, as opposed to Proposed changes. Useful for before/after renovation plans.
F
- Free plan
- How everyone starts, with no card: one workspace with one floor plan (one design), plus the sample homes and Build with AI to help you start. Subscribing lifts its limits — see How pricing works.
- Full seat
- A paid seat for someone who edits designs or administers a workspace (Owner, Admin, Editor). It's counted once per person across all of the owner's workspaces, and the owner's own seat is included in the base price.
G
- Gross area
- Floor area measured to wall centrelines. Compare Net area.
- Guest
- A free collaborator who can view and comment on the projects they're invited to.
H
- Hosted opening
- A door, window or passage that belongs to a wall and moves with it.
I
- Inspector
- The panel on the right of the editor that shows and edits the exact properties of what's selected.
N
- Net area
- Floor area inside the wall faces — what you'd cover with flooring. The default shown on rooms.
P
- Public link
- A read-only share link anyone can open without an account. Can expire, be password-protected and be revoked.
R
- Read-only
- A workspace state after a subscription ends or a payment grace period passes: you can view and download, but not edit.
- Revision
- A numbered state of a design. Every saved change creates a new revision; history lets you restore any of them.
S
- Sample explorer
- Opens any sample home in 2D and 3D without saving anything. Choose Use this sample to make your own editable copy.
- Snapping
- The pointer locking onto corners, wall centres, the grid or alignment guides while drawing. Toggle with S.
- Sun study
- A visual simulation of sunlight and shadows for your location, true north, date and time.
T
- True north
- The direction of geographic north on your plan, used for sun studies.
V
- Variant
- A named alternative design within the same project, such as "Option A" and "Option B".
- Version
- A named point in a design's history you saved deliberately, e.g. "Before moving the kitchen".
W
- Wall thickness
- How thick a wall is. Interior partitions are often 4½″ (115 mm); exterior walls are thicker.