It will need a support beam running the length of the house front-to-back, and possibly a new roof.

These are things that couldnt be reversed by laser surgery, either.

Ended up replacing some wall studs, subfloor, exterior structural base joists, 2 pier blocks (pier and beam foundation).  

One story much easier than 2 or more storyIF we are talking center support,,,likely things to look for is rotten or termited shortened wood posts,,rusted out pipe supports,,sway back beams,,an IF its a crawl space probably NO footer support under whatever is blocking it up.Easy thing to do is go under house,pick open area,,hang a string a distance like inch,3/4,,,2 inches,whatever is easy and have block to measure by. across the joists in a couple different ways or directions and SEE how much its swaying,and where it looks like its cause.I am NOT saying an engineer isnt the RIGHT thing to do,,,just look and maybe YOU can suggest to engineer things that cut the fees to a minimum.I had a small house they set on conc blocks with nothing under them down center support,,,they got wet from who knows what,,like lots of rain and sunk in the mud within a few years of being built,then the whole house sway backed all the years it was old.

Since you're so new to wholesaling I'd suggest that you really need to stay laser focused on just wholesaling and learning your markets.

Even for load bearing walls, what I learned is that I can still remove or cut them as long as I put beams above.

So, as brokers, we are supposed to list the "clear height" as being the absolute lowest point (bottom of the beam for wood beam roofs).

I have done the roof, ceramic, hardwoods, major structural repair to foundation, built deck, removed partitions, added beams, redone the yard & landscaping, installed furnace...you name it.

Brush up on building code requirements: in basements you're looking for egress windows that are 5.7 sq feet or more openable (3ft by 3ft casement style windows work best), and ceiling heights 6ft 8 inches or greater (as little as 6 ft 4 inches is ok under ductwork and beams though)3.

I'm in my mid 20s and I've been laser focused on this real-estate investing thing for a little while now.