My first thought was to build a small multi-family, I was going to bring some friends into the deal to ad a network for fundraising, etc, and or potentially get plans in order, and find someone to sign to the loan, and give a down payment for an equity stake.I am young with very little capital and am in need of some advice to either affirm my beliefs or point me in a different direction.

As for the rehab, I agree with @Eric Greenberg this is a very heavy lift and depending on the area it may require things like a sprinkler system, alarm system, ADA accessibility, high voltage power, and several other things that can easily blow up a budget.

@Altaf EssaniHave you looked into this as I believe you may need to get special permits, confirm it meets zoning requirements and make sure the entire home is ADA which most homes are not as countertops are lower, light switches, no cabinets below sinks…

You also must know difference between a pet and assistance animal or emotional support animal and act accordingly to the HUD, ADA  and other applicable laws and rules.

@Tim Lindstrom The Federal ADA standards are hard to meet. 

I was just wondering if charging a fee for that animal would cause and ADA problems.  

@Ada Guerin-HughesWelcome I’m a Realtor Let me know if you want any help

The major risk would be that you sign a contract/lease with them, and then they come after you to make necessary adjustments to the property in order to comply with certain ADA requirements.

After I hung up I thought "whoops I should not have said that since I can not refuse a service dog because of ADA." 

You can fatigue them by requiring certified copies of certificates, proof of animal immunization shots for X disease(s), frequent health inspections, frequent property inspection, etc.Or. you can seek legal assistance in drafting a new or amended lease terms which address these issues without putting your investment asset in jeopardy of a ADA lawsuit.