This is a follow up to the recent thread. I live in Northern NJ. So far, 3
different plumbers I talked to all quoted the same exact price of $350 to
replace existing crank-style washing machine valves with a Watts single
lever valve. Hard to believe this costs so much, since somebody here said
it is only going to take an hour to do and the part only cost $33 or less
and little bit of extra copper piping needed can't cost that much. I
suppose I could get a handyman to do this for a lot less but then this
person wouldn't be a licensed plumber....is it worth trying to save a couple
hundred by not using a licensed plumber?

The way I want it installed (described in next paragraph) doesn't involve
cutting into drywall. Just want to confirm this doesn't go against any
codes:

At some point (who knows when) somebody installed a single-handle watts
valve in my mom's unit. I'm looking to have mine done the same way since no
drywall work is involved. There are two eschuteons (sic?) against the wall
with about 3/4" exposed pipe sticking out. At my Mom's condo, it looks
like they removed the old valves and then added downward elbows and then two
sideward elbows and two small sections of horizontal pipe leading from the
sideward elbows which into the watts valve from the sides. Only difference
in her condo is that the pipes sticking out of the wall are 5 1/2" inches a
part vs. mine being 9", so that would mean that mine would simply need more
horizontal pipe. One of my pipes coming out of the wall is around an inch
higher than the other, but the same was true for my moms so I guess this
isn't going to be problematic.

There is nothing about that is goes against any codes, right?

Thanks,

Jay