You can get into trouble if it has ANY trace of herb obviously.....personally I would do a bit of reno and make it a den or computer room.Will add value in the long run and you will be able to sleep at night.
They are under T5 18/6, using general organics and the medium is pro mix.When I caught the ph screwy it was at 4.3!!!
Strains are mataro blue, early queen and white domina