Updated 13 November 2026
Where your data lives
Utility models of a data center campus are sensitive. Undersite is built so that, by default, they never leave the computer they are opened on.
In the app
| What | Where it is kept | Who can see it |
|---|---|---|
| Your models and the ground surface | In the browser on your computer (its own storage, IndexedDB) | Only people using that computer and browser |
| Conflicts, views, reports, settings | In the same browser | Only people using that computer and browser |
| A team project: its parameters, conflicts, reports, viewpoints and revision register (never the models) | Our database, eastern United States | The people in your team, signed in with their work email, and Undersite staff for support and administration |
| A project you share to read | Locked in your browser with the passcode, then stored in our cloud storage, eastern United States | People with the link and the passcode. We cannot read it: we do not have the passcode |
Opening and checking models happens in your browser. Nothing is sent to us to be processed. When you stop sharing a project, its stored files are deleted.
When we review a campus for you
- You send the files through your own file share or CDE, or through a private upload link we give you that takes files for seven days. Files sent through the link wait in our cloud storage, encrypted at rest, until we download them, and are deleted there once we have them.
- We work on them only on our encrypted machines. They are not passed to anyone else and not used for anything but your project.
- You get the results: the report, and a read-only link to the campus locked with a passcode you choose. We cannot open that link.
- We delete your files and our working copies within seven days of the report, and the read-only link after 90 days or sooner if you ask. We confirm the deletion in writing.
For ongoing coordination we keep the files for the length of the contract and delete them within 30 days after it ends. If you want us to keep them between two reviews, ask us in writing.
When you contact us
What you send through the form on undersite.app (name, work email, company, role and what you write about the campus) is stored in our database, eastern United States. Emails to hello@undersite.app arrive in our mailbox. The privacy policy says how long we keep them and what you can ask us to do with them.
Team projects
When team projects open, a project will have two modes, chosen by its owner:
- Conflicts only, the default: models stay on each coordinator's computer; conflicts, reports and the revision record are stored in our database in the eastern United States and shared with the team.
- Full project: models are stored too, in the eastern United States, so the whole team opens the campus with everything in place.
Who processes data for us
| Provider | What for | Where |
|---|---|---|
| Hosting and cloud storage | The site and the app, shared projects, upload links, email forwarding, visitor statistics without cookies | United States, served worldwide |
| Database | Requests from the form, team projects and sign-in | Eastern United States |
| Email sending | Sign-in codes and our emails | Eastern United States |
| Mailbox | Emails to hello@undersite.app | United States and other countries |
Questions about your data: hello@undersite.app.