Lost/missing/unpreserved/nonextant

[Aksinia]

Hello.

What adjective will work better with mansion?

Lost/missing/unpreserved/nonextant mansion (=mansion that hasn't reached till our time).

 

[emsr2d2]

Please give us a full sentence to consider. It's impossible to say which adjective goes best with a noun unless we have more context.

 

[Aksinia]

Please give us a full sentence to consider. It's impossible to say which adjective goes best with a noun unless we have more context.

On the site of the lost/missing/unpreserved/nonextant family mansion, the foundation for a two-storey building was laid.

 

[5jj]

None of them sounds natural to me. I'd rephrase the whole sentence along the lines of:

In the place where the old/original/fifteenth-century family mansion had once stood, the foundations for a two-storey building were laid.

Foundations is normally plural in this sense.