"Kai Chan" wrote
| Hi, I'm in a house with 5 rooms ( 1 large, 2 medium, 2 box rooms ),
| I'm planning to knock down a partition wall between one of the box
| rooms and a medium room. Mainly with the idea of adding more space to
| the medium room ( I work from home ), but I'm wondering whether that
| would add or remove value to the house? Can anyone enlighten me?

If by box room you mean walk-in cupboard (no windows, and thus not an
inhabitable room) then you will be bringing this into use as habitable
space, so it is likely to add value, especially if the medium room is on the
smaller side of medium.

However if the medium room is on the larger side of medium, you might be
better not losing a room (even an uninhabitable one) but thinking of eg
en-suite bathroom.

You will need building regulations approval for the removal of the wall and
to ensure that eg windows and ventilation are sufficient for the larger
habitable area created.

Owain