So we’re adding a 21×8′ addition off the back of the house to accommodate a new mudroom and half bath.  Also, going to open up the wall (a little) between the kitchen and dining room.  Here’s the new design:

Here’s the rear view.  Adding 2 more windows over the sink.  South-facing so it should let in a lot of light.  The new stairs will be wood — maybe trex?  I don’t know.

And side view.  Our lot is only 7,500 sq/ft — so we didn’t want to make the addition too big and ruin the backyard.

We don’t love the idea of a flat roof over the addition but didn’t have any other options.  We ruled out skylights after this winter.  Last thing we need is water damage you guys.