Selling a renovated strata unit

I live in a strata complex consisting of 3 town houses. 

I am doing some internal renovation (adding an additional toilet within my private property, NOT affecting any common property).

There has been a disagreement between the rest of the O/C and me whether I needed to get a bylaw registered regarding that internal renovation. I have proceeded with the renovation against the strata manager’s advice, and against the O/C decision that I needed that bylaw before proceeding.

I basically followed the advice of the Fair Trading, who told me a permission from the O/C was needed only if my renovation affected common property, and I also followed the advice of the LPI who advised me that my renovation was only affecting my private and NOT any common property.

One day when I decide to sell my unit/town house, could I have any problems selling it because of this renovation?

Considering I will have an additional toilet after the renovation, does it have to be added into the contract of sale, and how – or is it optional? Can I just claim to the potential buyers I have this additional toilet without having to include it in the contract?

When I bought this unit, the contract did not have a detailed floor plan, just one box for the entire unit. It did not provide individual details for each specific room.