First of all, a warm welcome to my new follower rosie posie, glad to have you reading.
As we live in a one level bungalow, we officially have no stairs but do have an area we refer to as 'under the stairs'.
Before we bought it, the bungalow had been extended from 2 bedrooms with no separate dining room to a 3 bedroom plus dining room abode. The 'under the stairs' bit refers to a cupboard that lies between the two back bedrooms. It used to house cleaning stuff plus anything my son needed to put there. As he now lives elsewhere with FDiL. and the main thing he stored under there has been moved out, we are taking this opportunity to fashion it into a better storage area.
Here it is just as DB has started:
Here is the progress:
Other than buying the middle conti-board, the rest we already had, stored in the attic. Here is the finished result before filling and still some skirting board to be fitted bottom left (haven't got any):