You need space to place your projects on. However, you also need security. You can restrict access to your projects and we also back up your data often, so that if something goes horribly wrong during your project, you won't have to worry. It is also possible to manually save the content of your spaces to the server harddrive.
You can connect your project spaces to the outside world, so that people from other spaces may teleport to your space and you may teleport to theirs. This is called Hypergrid and is possible to turn on or of, depending on your desired level of security or publicity.
Visibuild offers multiple project space packages that are scaled to your demand. From huge projects to single-house projects. Have a look in the Visibuild Store!