Tiny homes can cost more than average size homes after customizations.

Seek out the ones offering the support or lack of it that you're looking for, commission splits and fees will be based on what you want and some brokers will even customize a program to what you want. 

How much does flooring, paint and cabinets usually add to the value of a property?

Set house rules, no smoking inside, kitchen cabinet space designated per room.I have a house 6 guys living there by the room. works out, they have a chore chart sheet like who takes trash down, who cleans bathroom week 1, weekly clean up of main areas on Sunday week 1 and they switch off weeks.. yup faces change but not to much of grief factor. they seem to realize that they all are saving some bucks with this arrangement.  

You need to read your local jurisdiction's regulations.If you're doing basic stuff like painting, flooring, cabinets, trim, etc. then you don't need a permit.If you get caught doing work without a permit, you can be in for a whole heck of a lot of expense in terms of fines and they can shut down the "job site".

Many companies who build equipment have to prove they are ISO 9001 compliant to sell to some of their customers.

I added a fourth car garage, a giant lanai, a 45 foot swimming pool, and a nice craft room for my wife with all built-in counters cabinets and shelves.

But you have to be set up for that, locked door, locked file cabinet, and shredder.

Tenants have ruined 50% of the base cabinet doors in my kitchen.

I realize my properties are not  really what the typical customer wants.