I grew up near Burgettstown (Old St Johns Road in Brooke County, WV) -we always took the Bavington cutoff to go to Pittsburgh (I watched them build the Ft Pitt Tunnel). I was through there about 6 weeks ago showing it off to a lady from North Wales. Langloth has not changed.
Enough of the nostalgia.
How many rooms - that will make a difference in a lot of rules- such as requiring a commercial kitchen. I am on the Planning and Zoning Commission down here is Shinnston, WV. Go to your Township office and check their requirements - IN WRITING - because if they have not adopted the International Building Codes, you do not have to follow them. Re the well water - IF you have it tested whatever number of times the Health Department requires (again IN WRITING), you do not have to do the chlorination. Check the PA rules to be certain as each State is different. Unless you have taken the house down to studs, the sprinkler system is hogwash - in Burgettstown with a well, you would have to have a pressurized tank to feed that sprinkler system (THIS I am conversant with as I got the Fire Codes changed in WV for B&Bs and the pressure tank was part of the needs for sprinklers we were able to avoid). New-built MUST have all that crap - renovated does not. Also check on the exits requirements.
Emergency lights - plug-ins are accepted because if the power goes off, they come on AND can be taken with as flashlights. I am about to go replace some of mine because they are old - they WERE about $10 each at Lowe's so I figure it will be $15 to 20 now. You WILL need smoke/CO2 detectors everywhere.
I cannot imagine Burgettstown (unless it is PA requiring it) to have conduit for the electric. Just use copper NOT aluminum. Copper is more expensive but it will not catch your place on fire (perhaps a reason for them saying conduit). Exit signs aerenot required in a B & Bmost places. Again, I do not know what PA laws are. Illinois DID require conduit BTW in any new-built.
I wish you luck. Give a call if you think I can help, I am just down the road a piece these days..