lock house so it doesn't fall apart?

[GabrielleVanDerMalle]

How  do  i  lock my house, so i don't  accidently  loose  part of it  or collapse  it etc?

[Rolig Loon]

Select the structure, or as much of it as you want to lock, and click the LOCK button that's on the Object page in your Build/Edit tool.

ETA:  Like most people, I have more than once deleted a part of some structure when I thought I was deleting something entirely different.  It always helps to pay attention, but mistakes happen.  That's why my house and the walls around my parcel are all locked.  Nalates is exactly right, though  Having a backup in your inventory is your best insurance.  I have been known to unlock something, modify it, and then delete it by mistake.  :smileyfrustrated:

[Nalates Urriah]

In case you don't know... It is also a good idea to back up complex builds. You can select items not in a linkset and save them. They come into inventory as coalesced objects.