12d Data Extension for Civil 3D 2026

The Autodesk 12d Data Extension for Civil 3D 2026 is available via the Autodesk Access App or via download from the Autodesk subscription site.

The 12d Data Extension for Civil 3D 2026 requires access to the original Civil 3D install resources.

The official release date of the Civil 3D 2024 Extension is Jul 13, 2025

12d Data Extension for Civil 3D 2026

The 12d Data Extension for Civil 3D 2026 is a package of tools designed to work with common Australian and New Zealand Standards.

Read the Release Notes