You would only subtract routine permissible selling expenses such as: Owner's title insurance premiums Escrow agent, settlement agent or closing attorney fees Real estate agent’s or broker's commissions Finder fees or referral fees 1031 Exchange Qualified Intermediary fees Documentary transfer taxes Recording or filing fees Attorney fees and costs related to the disposition or acquisition Tax advisor fees related to the disposition or acquisition You would NOT subtract any non-permissible operating expenses or costs nor any lender or financing related costs such as: Financing or lender costs such as loan fees, loan points, appraisal fees, mortgage insurance premiums, lender's title insurance policy premiums, and other loan processing fees and costs Prorated Property taxes Prorated rents Insurance premium payments Security deposits Payoff of credit card balances Repairs and/or maintenance costsYour second question depends on your situation. 

. :)Here is a list for LA County but they are pretty much universal and can be used statewide because they are part of the State codes.https://www.lavote.net/documents/documentary-transfer-tax-statutes.pdf 

There is a great 2-part documentary on YouTube ("Living Tiny Legally") that shows how some people in a few parts of the country have worked with their local officials to create/amend regulations to allow tiny house communities...

For example if a property is purchased for $200,000 we’d pay $1,400 for documentary tax stamps. 

Also, @Jonathan Klemm We need a documentary/class on how you rehab a small multi family!

I watched a documentary called Land Grab on Amazon (you should check it out) and this investor in Detroit, Michigan bought a lot of abandoned homes with interesting characters in them and tore down and built trees.

TO save us all a lot of time I suggest watching this incredibly informative, educational and timely documentary released by FRONTLINE PBS..

The settlement also includes an unusual twist: The appraiser was also required to watch“Our America: Lowballed,” a documentary about their “white-washed” saga."

They just announced that Cadillac will be returning to Detroit after a four year stint in NYC and the recent Documentary on the History Channel "Detroit, Comeback city"Majority of my units are located on the Westside of Detroit.

Heck if interested to see how I develop that track record, and see how you can do the same  see my real life documentary journey where I am documenting my journey in commercial real estate world of multi family investment and show every decision and action that I make in my blog and showing exactly how...