You are working with a licensed plumber correct?

Yes, definitely.

Thanks for commenting. Ummm, I never said my contractor was a hillbilly....

His actions tell true.Instead of telling you to reselect an appropriate choice with the right drain location, he is going to try to hack it illegally.

I am asking the question, not my contractor. That is all. No one is hacking or illegally doing anything. Woah, didn't know posting a question would create this type of replies. No need for you to reply any more, thank you.

Bad idea. Get the right tub for the space with a drain in the right place.

Given a full tub will be around 500 pounds of water, in addition to the tub weight itself, that 3” higher floor is constructed of what?

It is a sub floor and tile over top of it.

and my wording my not be correct as I am not the contractor.

Reember, this subfloor will have 500+ lbs bearing on it when ever the tub is filled. How will it be braced/supported, how thick will the platform be, will it flex and crack the tile/grout, how much space will be left for the drain flex run.

Reselect a tub with the drain in the correct spot. There is no way to move the drain without the condo’s approval. Moving the drain is the only way to use the tub you have selected. No more platform and kludge.

Bad choice for tub period andthis is not going to happen in a condo for sure .The first step with renovating in a condo is permission to do what you want

I live in a condo with concrete floors.

I was also on the "architectural committee" which approved proposed renovations. Any time there was a proposal that would entail moving plumbing lines, we would insist on having a third party plumber/engineer review the plans at the homeowner's expense to provide us with opinions as to whether it should be done. We would also have required a covenant running with the land the warranted the change in plumbing in the event of any kinds of issues.

Because of the extreme potential issues for plumbing changes most well run condos are extremely leery about doing anything that alters the infrastructure. For instance what happens when a homeowner on the top floor does some kind of Mickey Mouse plumbing and every unit below is flooded such the people have to move out while their units are completely reconstructed.

I recently finished a remodel in my condo and I got rid of the tub/shower combo for a larger shower. This required a change in the drain - although it was located in the same position as tub drains are different than shower drains. As posted above, besides approval from the Board I also had to get permission from my downstairs neighbor to break into his ceiling so my pipes could be accessed. This cost approximately $1000 just for the demo and repair to my neighbor's ceiling. Luckily I am friendly with him and his ceiling wasn't special - just plain drywall. Other people in my building have "fancy" ceilings and approval to demo them would have been more expensive and potentially difficult to get.

Thanks everyone for replying. The condo is letting us move the drain in the concrete.