And you wont have enough equity to refi out any extra (you need 20% equity before you can start pulling out funds). 

i think it's because of the tremendous rise in home equity in the past 5 years.i used a HELOC to (1) help with a down payment on a short term loan, that I then paid back in full when I refinanced; and (2) to consolidate some higher interest debt, which I am now paying back by making extra payments against the principal since HELOCs are generally interest only for the first 5-10 years. 

They just buy not caring about anything extra.

Most developers would just utilize the extra yard space for outdoor storage.

They do hundreds of transactions a month and can guide you better than most attorneys when it comes to title issues.They use a complicated form that creates extra work and confusion with no benefit to the buyer or the seller. 

or not worth the extra money?

Id say its very similar to working with non investor clients aside from a little extra work and baseline knowledge of investing / rehabs. 

Paperwork to be signed is mailed back and forth and we only do our own lease as a formality and an extra chance to go in and check out the apartment to see if we need to fix something.

Renting for top dollar gets you less rent overall when the tenants turn over yearly and it takes you extra months to fill the vacancy!

I'm particularly interested in purchasing two-bedroom, one-bath (minimum) properties that offer space and potential for adding an extra bedroom and bathroom.