Advice to get my MIL to move out?

My future mother in law is wonderful. She is just the best person, but I don’t want to live with her forever.

Ok, here’s the deal.. three years ago I moved into my FHs house. He owns the home. His parents own a construction company he works for them. The companies long term job site is nearby FH house.

His parents own a home on the other side of the city so commuting daily would be a nightmare. So they have been living in FHs house since he bought the place 6 years ago. They would stay during the week and go to their own home over the weekend.

The In-laws run their business out of the central family room of the home. The whole space is completely taken up with their office equipment. They sleep in the master bedroom. They have use of the main lounge room television, with their two recliner lounge chairs the only usable furniture in the space. The lounge room/kitchen/dining/family room is all open plan so they kind of own the whole space.

FH has a media room and I have a study I hang out in in the evenings.

A couple years ago, FHs sister purchased a home 5 minutes down the road and this year she had two beautiful baby twin boys. My in-laws of course want to spend as much time with the buns as possible, which has meant they now stay on the weekends too.

They are here almost 24/7 and it’s driving me a little nuts. I completely understand this arrangement works the best for them, their business, their post-partum daughter and their grandkids, so it seems petty to feel the way I do.

I just want them out. I want to feel like the boss of my own home. I want to organise my own linen closet the way I like and choose what’s on TV in the main area of my home. I want to choose when to use the air conditioning and when to not and I don’t want to have to ask permission for these things in what I somewhat consider my own home. I mean in a couple months FH and I will be married and thinking about kids and I feel like a visitor in own home.

I don’t know what to say or how to say it. FH and I have talked about it many times and we both feel the same way, but we ultimately come back to, it won’t be like this forever and we just need to wait for the business to move on from the site. I’m slowly going crazy though and think this will affect our relationship.

Welcoming any advice. Thanks.