If new water lines and drains are in the budget, for example, it is best to do both units at once.

Maybe not everywhere but I know of properties that you'd have to pay me to take them and they'd likely never be anything more than a money drain.

Turn key goes vacant you are sucking cash down the drain until you get re-rented.For those who love turn key it's your right to load up on them.

Newer homes have PVC drain piping instead of rusty iron piping.  

.- Additional subfloor (wood) and cement board (floor) $100- Shower cement board $75- Waterproofing Membrane (I like to do this) $150- Shower wall tile (80-90 SF) $150- Flooring tile (30-40 SF) $100- Tile setting and grout $75- Vanity with top and mirror (24" it looks) $250- Toilet, wax ring and feed line $100- Faucet, feed lines and trap $75- Trim $25- Accessories $40- Fan/light $150- Vanity Light $50- *Shower diverter valve with trim kit and plumber to install and help set tub/drain. $750- Screws, adhesives and fasteners (cement board screws, caulk, etc) $50- Paint $40- Miscellaneous $100TOTAL: $2530With all of that said these numbers would be my BASE run, and assuming I was spending my budget amount on each item.

If the house is empty, it's probably a financial drain on the owner.

And with a good drain pan, when they eventually leak, you won't get a bunch of damage to the home.

@Curt Davis Remember, you can't just fill in the pool - you are better off removing it or at very least cracking the bottom and sides up as much as possible to let water drain.

Turns out the drain pipe on the tub is leaking and the ceiling was just covered in mold.

I need to redo the waste and drain for an entire triplex, and wanted to do a furnace replacement/add central air.