The materials used to build the house have moved across state lines. Also, the enforcement clause in the Fourteenth Amendment allows the government to prevent racial discrimination.
Building materials?
Also, 14th applies to the STATES, not individuals. Private property is NOT State property - at least did not used to be.
You write as if you are an apologist for the petty tyrants who have usurped our Constitution.
I suggest your logic is overbroad in that anything may come under the ICC because everything is affected by ICC somehow.
As far as this lady is concerned, not sure but I get the impression it is a private residence and she has a few room to let. She is renting rooms inside her private residence. One would think she would have the right to control who enters her home.