You’re FAR too hung up on the term “landlord”.

It is possible that they could spell out the terms in their will, and put the money in a trust that can only be used in certain conditions. There’s also a good chance that they didn’t, and we’re just giving you some good advice on how to turn that lump sum into an income.

Even if they did spell it out in the will, There are no terms on what you must do with the duplex. You could fix it up and flip it immediately, or tear down the divider and just have one big house all to your self.

Although, I wouldn’t think any less of you if you did rent out half of your home. We gotta do what we gotta do.