My interior finishes (flooring, trim, cabinets, bath fixture, etc were pretty much the same costs for me).

Attach a trim edge to the outter sides, nice. 

You pay for foundation work to be done too.And keep in mind a pre fab structure trimmed out at $45 a sf level is propbably going to be low end.

I also was thinking just to leave those alone and focus on details that stand out; floors, paint, trim, kitchen, bathrooms etc.

The one we got was a little too large so I trimmed it to fit nicely....https://www.amazon.com/LUCID-3...

My main concern is that I had a water remediation address the immediate flooding and a general contractor to start repairs on the drywall, insulation, trim/baseboards, and minimal repainting because my tenant elected to stay in the unit throughout the whole process.

As she sees it, there are many more potential liabilities with dogs.But I do know that for cats she has a strict policy on up-to-date vaccinations, spaying/neutering, and a tacit expectation that they are either declawed or their claws regularly trimmed.

Home Depot for flooring and bath fixtures, and a local building supply for dimensional lumber, windows and trim. 

Example for my market: - water heater $1600 (lower end of licensed plumber cost), 12.5 years (150 months) $10.67/month- roof (asphalt shingle) 2 br, 2ba typical size ~$10k licensed, 20 year life span $41.67/monthkitchen, exterior paint, flooring, plumbing, electrical, fencing, tree trimming (I have a property where the tree trimming is one of the larger maintenance/cap ex items at over $1k/year), bathrooms.  

I also subcontracted out the Electrical work, & Tile Work to other contractors.Contracted Work w/ ContractorDemolition $800 Labor only (no dumpster)Site Work (exterior cleanup) $200 Labor onlyNew Deck $4,000 L&MExterior Doors & Windows $1,250 Labor only Drywall & Framing $6,500 L&MCabinetry Installation $1,225 Labor only Interior Doors & Trim $2,080 Labor only Plumbing Work $2,860 L&MTotal $18,915Unfortunately, on this project the Contractor stopped showing up, and the writing was on the wall that we weren't going to get the project completed on time for us to move in, so I had to do some of this myself.