FRP panels for walls in wet rooms, VCT for wet room floors, 1x4 screwed horizontally to studs & towel bar mounted to that, *no* soap dishes in showers, high gloss white paint for trim, *no* carpet, 

I once paid a framing crew a 24 pack and a Hot N Ready to trim some huge tree limbs lol.

Very inexpensive, I add extra features to them such as trim and stain. 

I would measure the old windows after taking the trim off , then call a couple wholesale window places.

If you want me to trim the hedges I can do it for a reduced rate because I am already there and don't have to make a trip just for that.

Coming from a corporate background, I can guarantee this works -- every organization has a lot of overhead, and if you force the heads of the organization to trim the fat, it will happen without any loss of effectiveness.4.

She said it was too high and I even expect them to keep the grass trimmed after that rent?

The trim ... well, that's another story (and why Rob K is warning you off puppies).

Say 220 was roofing ststems for expenses, 221 could be felt, 222, shingles, 223, hardware (nails, screws, trim, drip trim, vents, sofit) 224, decking/lumber, 225, roll roofing (including rubber systems) 226, glue/adhesives...you get the idea.If you are knocking out say 4 basic floor plans, different elevation but all the same materials/grades, you are buying bulk and allocating costs based on the plans per plan.

(There will be splatter all over the trim and flooring and the ceilings will need to be redone because the don't know how to edge).