She wants to take down walls, choose lighting, choose tile, etc (all of this has been purchased and install is scheduled out).I told our realtors that we are not in the custom home business (I have no interest in that), and if the current unfinished state gives people walking through that customization is an option, I'd rather wait and not show it at all .

So how are we supposed to do repairs for a sale when tenants want 24 hours notice and are not cooperating.We have a timeframe to get them done and repairs required need her to make room and move possession.Termite damage and repair, electrical work and install baseboard heaters.Her possessions are blocking all access.

This tub is brand new (less than 2 weeks), and we've just had all new tile put in last week (typical shower/bath setup in an older bungalow).

Laundry room will have a washer pan with a drain to the outside with tile floors. 

If gas isn't already available for a gas furnace that would add to your install costs as well.If you are going to continue to pay for utilities I would get an energy audit done on your property.

Can I install drywall ceiling or does it have to be ceiling tiles to access ductwork and pipes?

@Dan HoehnLast year I tiled my rental tub, same configuration with 6x24 tiles vertically. 

Between the two of us, we are experienced with soffit, siding, roofing, flooring installation, carpentry, etc.

The unknowns I have had to learn the hard way are everything you can not see using one point in time (pre buy inspection); i.e. subfloor wood rot in your crawlspace that no one caught (even though 4 people were down there at different times), permits (have people pulled them in the past for big things that were done on the property), septic drain lines (septic tank was amazing, but the drain lines were faulty had to get a permit and get the city to do an inspection and called for a 7,500 repair and partial mound system to be installed....when the original inspection and pump was aok because it was a dry time of year)...., speaking of time of year, a HVAC unit that was inspected in the winter and the differential was AOK, was inspected for a closing in the summer and had to be completely replaced (4k-that I wasn't supposed to have to spend), drainage issues on the property and water intrusion......no body really inspects for drainage issues prior to closing, especially when it's a dryer time of year, then BOOM the rain hits and water is coming in over the foundation because water is not being routed correctly around the house.

Are there utilities that need to be installed for the conversion?