Katherine wrote:

We're in the process of looking for a house and one of the
things that I really REALLY want is a full master ensuite. This
way we won't have to share a tub with the University students we
plan to rent rooms to!


However, I feel that to get the best deal we should be open to
considering some of the houses that only have a two piece bath,
but perhaps enough room to install a tub either in the bedroom
(near the bathroom), or expand the bathroom, etc. You get the
idea of what I'm talking about.

snip

We just want an idea of how big a job it is
(in general, I know it depends on the situation).

A big general "first consideration" answer: Most people think
of plumbing as running supply lines, but the big "gotcha"
with plumbing is drainage. Tubs n sinks n toilets (especially
toilets!) need to drain into a "stack" a vertical riser that
goes to your main sewer line. That's usually an existing stack,
but you can run new ones, but that's where it gets ugly.
Anybody can run hot and cold supply, but getting rid of the
stuff is your "big job" in most cases. Think *drains* when
you get a mental picture of your brand new stuff. HTH.

--
The real Tom Pendergast [ So if you meet me, have some courtesy,
aka I-zheet M'drurz [ have some sympathy, and some taste.
Accept no substitutes! [ Use all your well-learned politesse,
$1 to Mick for the .sig ---[ or I'll lay your soul to waste.