Horizontal blinds offendeth mine eye. Not only are they cheap examples of modernism gone horribly wrong, but the need for them is based on modernist architectural corner cutting. In 1953, when they built my house, trim work was considered too expensive and time-consuming to install. Instead they simply set the doors into the stud and drywall construction and rounded the corner to give a nice clean modernist line. After all, no one wanted fussy trim work in 1953. It looked positively Victorian to them, and they felt it served no purpose.
But trim work does serve a purpose. It reinforces the edges of doors and windows allowing them to do things like support curtains. Without trim you have to try to fix your curtain rods to a wall stud with long screws or use drywall screws and hope for the best. You are limited to lightweight curtains at most, or horizontal blinds. Our house came with horizontal blinds.
As simple a project as this was in and of itself it meant coming up with a plan for all the trim throughout the house. It had to be a plan that could be done in stages as we had time and money. Which meant I had to chose materials that were likely to be around for awhile. What I decided was to use simple boards of California redwood for everything but the picture rails. In California, redwood is one of the most regulated forestry products in the world, so its likely to be around at a stable price for the foreseeable future. Its got a nice fine grain that sands and stains well but is more affordable than any hardwood.