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

[politicat]

5. They're not block or adobe, I think lumber.

I can tell they're interior walls, so probably plaster and lathe or drywall (the house was built in 1948 so it could be either) but not masonry.

Adobe, while desirable, is getting increasingly scarce.

Mom thinks it's a relatively straightforward job, so she's going to look at the house. The downside is actually that the lot is huge, so more yard maintenance. But she's within a decade of retirement, so may develop an interest in gardening eventually, and honestly, paying for lawn service is about the same as paying for an HOA in a condo or townhouse.