To meet classification as investment / rental property to qualify for future 1031 sale --  What if I just live at my girlfriend's and sit on the house without renting it ??? 

The town should be able to provide you the use classification of the unit. 

The IRS defines a “quality” cost segregation study as “a study that is both accurate and well documented with regard to” 1) the classification of property into classes, 2) Explanation of rationale for the classification of the property and 3) substantiation of the cost basis of each asset and reconciliation of the total allocated costs to total actual costs.

Don't allow financing or a finance contingency (it can be a good indication they are selling above market value) Don't allow for your own independent property inspection Are not realistic with their pro forma's (i.e. they don't include vacancy or maintenance projections or use unrealistically low vacancy factors) Require you to pay for any renovation upfront Sell only in cheap. low end neighborhoods Don't accurately represent the neighborhood/property classification Don't have consistent rehab standards for all properties Don't provide a scope of work for the property Can't provide references of repeat investors

So it'll go into one account but a separate class, if that makes sense. 

It may be as simple as the R1 classification was assigned when the original 3/2 was built and someone added the 1/1. 2.

This is different from private property, which are things that are not permanently attached to the land, such as cars, boats, jewelry, furniture, and farm equipment.Understanding ownershipPeople often trade land, real estate, and real estate, but there are some subtle differences.Land refers to the surface of the earth up to the middle of the earth and the upper airspace, which includes trees, minerals, and water.Property is real property and any permanent additions, such as houses and other buildings.Property One of the two main classifications of real property.

The long-standing "Anyone in America can reach the middle class if they work hard enough" has remarkable similarities (and some differences) with today's idea of Equity.   

@Nathaniel J Mott in the insurance world, your correct classification is more in line with being a contractor/remodeler. 

Are neighborhood classifications (A, B, C, etc) universal or subjective?