BIM Automation · Civil 3D · Revit · Dynamo

Your team loses weeks a year on tasks an add-in solves in seconds.

We build them. C# add-ins for Civil 3D and Revit, Dynamo scripts, and training for BIM teams. A team of civil engineers and software engineers: we understand your workflow because we've lived it, and we know how to build the tool that fixes it.

  • Civil 3D · Revit · Dynamo
  • C# / .NET add-ins
  • Training for teams
Why Zeist

We're not one more drop in the ocean.

The English-speaking BIM ecosystem is full of Revit tutorials and generic automation agencies. We do something else: we build the tools, we work infrastructure, and we publish everything we learn.

01

Civil engineers + software engineers

You won't need to explain what a corridor, an assembly, or a site surface is: there are civil engineers on the team. And there are software engineers so the tool holds up in production. The diagnosis starts where others are still figuring out the problem.

02

C# add-ins, not just Dynamo

Most stop at visual scripting. We take automation all the way to an installable add-in: a button on the toolbar the whole team uses, with no graph editor to open.

03

Real Civil 3D expertise

Almost the entire ecosystem talks about Revit. We work infrastructure daily: corridors, surfaces, profiles, earthwork quantities, and survey points.

04

We publish what we know

Complete, free guides to the Revit API, the Civil 3D API, and Dynamo. If your team ends up maintaining the tool on its own, that's a win for everyone.

How we work

From diagnosis to an installed add-in.

A process built to avoid the most common mistake: writing code before knowing if it's worth it.

  1. 01

    Workflow diagnosis

    We look at your real process and measure where the hours go. You get a list prioritized by time saved versus effort.

  2. 02

    Dynamo prototype

    We validate the logic fast and cheap. If the team confirms it solves the problem, we move forward. If not, you just saved weeks of development.

  3. 03

    C# add-in

    We take it to production once usage justifies it: layered architecture, error handling, and performance on real models.

  4. 04

    Rollout and training

    An installer for the whole office, team training, and support when Autodesk ships the next version.

Tools · Free

Scripts, templates, and calculators for your daily work.

Available now: UTM coordinate converter, land area calculator with legal description, contour map generator and Manning's equation calculator. Coming soon: Dynamo graphs and C# add-in templates.

What task is stealing hours from your team?

Tell us about your process. We'll tell you if it's worth automating, with which tool, and how much time you'll get back. No commitment.

Talk to an engineerReply today · No commitment