When we decided (April 2002) that the master bedroom in the house was just too small, and the bathroom even smaller, my husband decided that we should look at the basement as a possible place to build the master bedroom and bath we wanted. As I've mentioned before, our house sits on a full walk-out basement. At the front of the house, the ceiling would be a little above ground level. On the sides there are windows as the ground slopes, and the back is completely above-ground.
We built our master bedroom in what was an office. But first we tore down all the previous walls, and built a new one that would give us more space. We also took out the half bath that was down there. Our bedroom is about one-third of the length of the basement, but it also includes an area that we've used as an office (it fits two L shaped desks), and which is currently more like a den or reading area. Part of the area our room takes up includes the master bath. We created a room within our bedroom that was on the back wall, so it would have a window, which we had to add by removing cinder block.
We designed a bathroom that would have a corner shower stall with seats and two shower heads, and we used glass block for the upper half of the side walls of the shower. We also wanted a bidet. We built the frame for the shower, and had to jackhammer the concrete floor to move the plumbing from the old half-bath. We also wanted to add new half-bath on the other side of our master bath's wall, so it would be accessible to the living room. There was a lot of jackhammering. :) We also laid all the tile. That was a fun project!
I'll talk more about the bedroom in another post. But here are some pictures from the creation of the master bath.