How hard is it to turn a door into a wall and match cabinetry?

[jeff47]

3. Making a door into a wall is easy.

You don't even have to have the wall be structural. The existing structure carries the load around the door, so filling in the opening is very easy.

As for cabinets, my suggestion is don't try to match them. While you can probably get very similar structured cabinets, matching the color can be very difficult unless the cabinets are new-ish. Even if you know the exact paint/stain that was used originally, the color of the old cabinets would have changed over the years.

My suggestion is to make the new cabinetry into an "accent" piece. Do a radically different color, possibly with a different style. Depending on the layout of the kitchen, it may make sense to replace a little of the existing cabinetry with the "accent" cabinets.