Some costs will generally be the same, ie furnace, but other things like laminate counter tops vs granite will change depending on what the comps call for. 

Price on kitchen and bath will vary a lot based on the type of finishes you have, however $25k will be a ballpark price especially if it's a rental unit.This is how the cost breaks down for us:$5,500 white shaker cabinets$3,200 granite$1,300 kitchen installation$3000 appliances$5,000 plumber + electrician$5,000 brand new bathroom including new flooring, tub and vanity, toilet, faucets, paint.$2,000 demo, permit fee and miscellaneous items.This is just a quick run down and like I said price will vary if you want to gut the whole place because at that point you have to add insulation etc.Hope this is helpful. 

Granite?

We did a small area of turf, used a lot of decomposed granite, and put drought tolerant plants in giant pots with a drip irrigation.

For countertops, would you recommend Quartz, Granite, or something else?

Someone paying $1200 a month may expect stone (e.g. granite or marble) but someone paying $600 a month is going to take what ever is there.Note that I haven't even touched on styles.

Any good flooring and granite contacts?

But I would NEVER but granite and stainless steel in the kitchens of my rentals.I would never put real hardwoods in.. my rentals are not in high end neighborhoods.

(If they have granite countertops, does your property also have that?) 

I work full time as a granite/marble fabricator.When it comes to real estate I have no previous experience, however I did find this AWESOME community called bigger pockets which has led me here!