Autodesk Forma – How can I create a site larger than the current map area limit?

[arayaani05]

My name is Muhammad Furqan, and I am a final-year Architecture student at the Department of Architecture, University of Engineering and Technology (UET), Lahore, Pakistan.

I am currently working on my bachelor's thesis project, a Hotel and Resort Development at Khabeki Lake, Soon Sakesar Valley.

For terrain analysis, site planning, and master planning, I have been using Autodesk Forma because it provides highly detailed and accurate topographic information that I have not been able to obtain through other tools.

However, I am facing a limitation while creating my site. When selecting the site area, Forma displays the message:

"The area is too large. Select a smaller area by zooming in."

The maximum selectable area appears to be around 1.95 km × 1.95 km (3.80 km²). Unfortunately, my thesis site is significantly larger than this limit, and I need a wider area to include the complete lakefront context, surrounding hills, access roads, and resort development zones.

I would appreciate your guidance on the following:

1. Is there any method to increase the site area selection limit in Autodesk Forma?
2. Is this limitation related to the software, subscription type, or project settings?
3. Can multiple adjacent site areas be imported and merged into a single project?
4. What is the recommended workflow for large-scale master planning projects that exceed the current selection limit?
5. Are there any alternative methods to import a larger terrain model into Forma?

I have attached a screenshot of the issue for reference.

[kevin_vong1 · Accepted solution]

Hi Muhammad,

Thank you for the detailed question — this is a well-documented limitation in Forma Site Design, so I can address each point directly.

1. Is there a way to increase the site area limit?

No. The maximum working area in Forma Site Design is **1.9 × 1.9 km (3.61 km²)** — this is a hard product limit and cannot be changed through any setting, workaround, or configuration.

2. Is this subscription or settings related?

Neither. This limit applies to all users regardless of subscription type or project settings. It is a current constraint of the product itself.

3. Can multiple adjacent sites be merged into one project?

No — sites in Forma are independent and cannot be merged. Each site must be set up separately. One important clarification: the **Browse Contextual Data / Update Terrain** option only expands the *visual background context* visible around your site — it does not increase the actual working design boundary where buildings can be placed and analyses run. This is a common point of confusion.

4. Recommended workflow for large-scale masterplanning?

The only option within Forma today is to split your masterplan into multiple separate sites — one per sub-area or zone (e.g., lakefront zone, hillside zone, access road corridor). However, there is currently **no way to run analyses (solar, wind, noise, etc.) across all sites in a single unified view** — each site is analysed independently.

Whether this works for you depends on what you need Forma for. If the goal is early-stage massing or solar studies on specific parcels of your resort development, multiple sites can still add value. If you need a single integrated model of the full lakefront and surrounding context, **Forma Site Design is not the right tool for that today**.

5. Alternative methods for importing a larger terrain model?

There is no supported method to import a terrain model that exceeds the 1.9 × 1.9 km working boundary. Terrain data outside that boundary will only appear as visual context, not as a usable design surface.

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For a thesis project at the scale you're describing, I'd suggest using Forma for focused sub-area studies (e.g., a specific resort cluster or lakefront section) rather than the full master plan extents, and using a GIS or BIM tool for the broader site analysis and masterplanning at full scale.

I hope this helps clarify the constraints so you can plan your workflow accordingly. If this answered your question, please consider marking it as the solution — it helps others with the same limitation find the answer more easily.

Best,

Forma Team