Kitchen remodel plumbing issue?

[NickT]

Doing a kitchen tear out, after removing my cabinet I realized my drain and supply lines are currently running behind the corner cabinet and into side of the sink base cabinet. Currently my old copper drain line for sure needs to be replaced as it's dripping. My new corner cabinet sits 6" off the wall so the current plumbing could work with the exception of the drain replacement. Just looking for opinions, my floor joist are 2x10 and I've got subfloor cut out just need good advice. I do have a plumber coming but the normal one I do work with got pulled off my job and his son is coming so not sure how I feel about that either. I guess my main question is leave it and just fix drain going out or change location of drain and supply lines? What would be the better or correct way? If that makes sense.

 

[Terry]

If you have a 10" deep sink, make sure the drain is no higher than 16" above the floor.
That's a very long trap arm. Normally 42" to the vent from the p-trap. It may need an AAV in the cabinet for venting.

 

[Sponsor]

 

[NickT]

If you have a 10" deep sink, make sure the drain is no higher than 16" above the floor.
That's a very long trap arm. Normally 42" to the vent from the p-trap. It may need an AAV in the cabinet for venting.

Ok I don't think I mentioned my sink base is going under the window, the old drain ran just under neath if the supply lines in the picture. Just didn't know if there was a different option to run plumbing supply and drain. I assume the only other way would be coming through the bottom of the cabinet from below the floor? Just not sure how I feel about putting holes in my floor joists

 

[NickT]

Ok I don't think I mentioned my sink base is going under the window, the old drain ran just under neath if the supply lines in the picture. Just didn't know if there was a different option to run plumbing supply and drain. I assume the only other way would be coming through the bottom of the cabinet from below the floor? Just not sure how I feel about putting holes in my floor joists

I see what you are saying now I just misunderstood I guess, I will mention it did not have an aav before and did seem to drain ok. I guess I'm just looking for a better way to run supply and drain if there is one or if there's a correct way if this is incorrect. Been that way since mid 70s lol I will mentioned it's finished curling below