In return for the City's rehabilitation assistance, participants agree to certain long term (5-20 years) rent and occupancy restrictions which provide for the continued availability of the housing to lower income families at an affordable rent.

Generally - you can make a referral fee on these types of loans if they are 100% purely business purpose - a lot of the restrictions and issues come from anything consumer-related. 

How much it will affect your DTI depends on your existing debt obligations, income, the mortgage of the primary home you want to buy, and the mortgage of the house hack property.I recommend using the 5% down conventional loan product to house hack and only use FHA if you have to since there are more restrictions involved.

I would just be careful of any condos since many of the buildings along High street have restrictions on STR.

You will also discover that vacation rentals are restricted in many parts of Brevard.

there are income restrictions.  

Banks tightened down pretty hard on HELOCs. 

Some hard money / private investors have minimal loan amount restrictions. 

It is becoming harder to justify a restrictive 5.5% federal funds rate.The Chevron and Loper DecisionA new Supreme Court Decision may Hopefully Bring Clarity and Efficiency to the Mortgage and Housing Market.A recent Supreme Court ruling may bring impactful regulatory changes to the housing market, and people aren’t talking about it.

However, there are some restrictions that apply, you'll want to look for details on "bonus entitlement."