I've read post where people say $500-$1,000 but that seems to be for single family houses and for the finder to just find the deal, not broker it per say.The deal.It is a 32 unit apartment complex 3 buildings.

I've been investing in 1-4 unit investment buildings (buy and hold) and recently have begun to look into apartment complexes. 

The SFR are maintaining decent value and there is a lot of mfr and a couple larger complexes in this area.

Deduct for Insurance, Taxes, Capex, Maintenance, Vacancies, PM, etc.Relying on Equity build-up in your Duplexes for the down payment on the Apartment complex could be problematic.  

My thought on your option B is that a good deal on small complex apartment in Houston is very hard to come by.

Much less liability and complexity.

After a few more years, I would sell the complex and use the profits for a large ~75 unit apartment complex.

I have learned 11 years in that the less complex or EXOTIC you make something the MORE of a chance it actually has to close.I like vanilla deals.

We own 16 condos in a complex in Santa Fe, NM.

Both times they returned, re-read, and the bill went down drastically to basically the usual amount.In the first instance, I was living in a big apartment complex.