Parents wanting to build a granny flat on our property

Is there a far corner of the property

Is that like giving her the cold shoulder?

 

Anywhere north of where you are because that is the only direction you can go.

If only the shoulder is cold consider it very fortunate indeed.

 

IMHO, you have pretty much answered your question below.

 

But the granny flat may not increase the value of the property by the same amount that it cost to build. And you can’t easily access the cash.

 

Personally I don't think they should be adjusting anything. They will be saving money for many years by living in the granny flat.
Who will pay the electricity etc?
It sounds like you have concerns.
The future is too uncertain in my eyes.
What happens when they get older? Need caring for? Will the will be adjusted back to compensate you for that?
Once you take on that responsibility there may be assumptions in place?
This could cause problems with the sibling.
If they have the money I'd suggest getting something nearby.
If you do decide to go ahead I'd sit down with the parents and the sibling to map out all possible scenarios.
Sometimes people assume one thing and others assume something different. You need to make sure you are all on the same page.

 

20,000 acres, maybe
2 acres No!!!!

The suggestion of a caravan or temporary arrangement would make sense without a huge financial commitment.

 

Emotionally, you already know the next path right now. Do Not look to this forum (all the thread) for recommendations. Get experienced council.

 

If you already have some issues with your mother, I'd just suggest that they buy a nice caravan, that they can put on your land, and explain that it then gives them some flexibility for them to take holidays with as well. I don't think I'd want something permanent if there was a possibility that she eventually move in full time.

 

I'd be thinking that if you already have some issues with either or both of them, having them living there is not going to help. This alone sounds like enough for me to say no.

The Air BNB income might sound good but - what if they say oh you can't make it available because we want to come then? Or might want to come?

The only way I'd do it (if I really had to) would be to fund it myself so they don't get any "say" it when or how it is used, and you can control the occupancy.

 

Good idea

There's lot's of 'tiny houses' essentially built on a big trailer with wheels so they can be moved if needed

Retreat 9500 - Alphaline Tiny Homes

 

That Tiny Home was $150k last year, so it would cost even more now. A $100k granny flat will cost far more today than it did whenever Mum and Dad first got the idea.