., you wouldn't think twice about spending $100,000's of dollars for the education needed. 

Never had any issues in any 80's or later model homes.

s 1.) 1% rule very realistic in new builds 2% I can't imagine how thats even a mention with new construction to be honest very very unrealistic.2.)

That was a problem for houses built in the 30’s and 40’s.

I have walked in your shoes 3 times in S.

You can find 70's if you source the deal yourself much easier. 

The maximum number of financed properties that are permitted is based on the underwriting method, as described later in this topic.The financed property limitapplies to the number of one- to four-unit residential properties where the borrower is personally obligated on the mortgage(s), even if the monthly housing expense is excluded from the borrower’s DTI in accordance with B3-6-05, Monthly Debt Obligations (01/30/2018);applies to the total number of properties financed, not to the number of mortgages on the property or the number of mortgages sold to Fannie Mae;includes the borrower’s principal residence if it is financed; andis cumulative for all borrowers (though jointly financed properties are only counted once).The following property types are not subject to these limitations, even if the borrower is personally obligated on a mortgage on the property:commercial real estate,multifamily property consisting of more than four units,ownership in a timeshare,ownership of a vacant lot (residential or commercial), orownership of a manufactured home on a leasehold estate not titled as real property (chattel lien on the home).Examples — Counting Financed PropertiesThe borrower is personally obligated on mortgages securing two investment properties and the co-borrower is personally obligated on mortgages securing three other investment properties, and they are jointly obligated on their principal residence mortgage.

As in a seller has 5 SFH's that s/he is trying to sell all together?

@Linda S.

Lines with apartment #'s it is!