Hey All,

I am converting a barn into a residence for my mother-in-law (1st mistake) and have run into an issue with the drain lines for the kitchen sink/dishwasher.

Because of the layout, I cannot get a drain line to run inside the wall and enter the adjoining room, which is the bathroom and has the waste line to the septic system.

Think of it as two squares that only touch on the point of one corner in each room (it's not that odd, but that helps).

But if you stood at the kitchen sink and look outside, that waste line would run directly past you on the way to the septic tank.

Question: Could I go out that wall, dig down, reach the drain line and connect to it there? I mean, I know I can, but will it work? It just seems weird.
Assume I can house whatever pipe is exposed to protect it.

Vent lines are not an issue.

Thank you all in advance.

Upstate NY farmland, it was 3 degrees on Saturday.



Edited 2 times.

i see no reason you can't do that.
just have a cleanout available for that drain.

I'd recommend you stop referring to the place where your mother-in-law will be living as a "barn". Saying that might be taken as implying something about her in an animal sort of way, not likely to keep you in the will.



Edited 1 times.

Could call it a "palace".

Down here in south Florida if a piece of land has two disjointed buildings, one main building and one additional smaller one, usually a conversion (most times illegal conversion), they refer to it as a "mother in law quarter".

For example, "for sale 3 bedroom 2 bath charming house beautiful terrazp floor updated kitchen, with a bonus MIL quarter, call for appointment won't last."

MIL quarters are always detached.