I am familiar with pre-existing multiple properties, but haven’t done something of this scale.

Once you find a builder, you will learn that you are paying a premium for a custom built home that will be over the price of just going out and buying a pre-existing home.  

@Gregorio VillarCommercial loan at a community bank/credit union is an option especially if you have a pre existing banking relationship plus strong personal balance sheet.

Unfortunately, they will not cover this as A) it is within 60 days of starting my policy and B) it was not sudden and accidental but rather a pre-existing condition. 

In order to do that you need to establish and maintain the relationships with the deal sponsors so that the next time they have a deal you can qualify as someone who has pre-existing relationships with them. 

I purchased my current multi unit with pre existing tenants, and it has been a great experience. 

A pre-existing structure will mitigate a lot of the issues Becca, above, mentions - particularly with zoning and permit which can get expensive and be a lengthy time-process (time is money).You'll need to find a boots-on-the-ground or a contractor that can handle multiple units - you may be able to find this resource through vetting a property management company or by joining social media groups for investors in that area.Always work with licenses, insured, and referred folks - from the contractor to the realtor to the PM etc.Best of luck to you!!

.- Mom/Pop tend to be drive up, not climate controlled, no onsite professional management and site is based on pre-existing land and convenience to the Mom/Pop and not the customer.

The issue though is being able to utilize pre-existing properties to incorporate the affordable housing aspect into this.

http://en.wikipedia.org/wiki/Putative_marriageWOW WOW WOW, this is a scary read - " putative marriage is an apparently valid marriage, entered into in good faith on the part of at least one of the partners, but that is legally invalid due to a technical impediment, such as a preexistent marriage on the part of one of the partners.""