Yes, HubSpot has a built-in sandbox called Content Staging where you can test your codes and pages before pushing them to production/live environment. This is a great way to avoid breaking your live site and ensures that your changes will work as expected.

Here are the steps to access the Content Staging:

1. Open Site or Landing pages in your portal.
2. Scroll down to the sidebar and click More Tools, then click Content staging
   
3. Pick the domain you're going to stage or create a new staged page on: