Our assessor does not classify if a house is manufactures, modular, stick built, facory built, etc. Went to house today, and I need some help figuring out what this is: - Per owner- bought from a factiry built housing company in 1978 called "Marshfield Homes", who is no longer in business - House sits on a full basement, and when looking underneath there was no evidence of a steel frame, a hitch, axels. The floor is wood joist framing. - The original part of the house is 14x76, and in 1984 a family room addition was attached. - House has been renovated several times, and any evidence of tags or labels are gone What do you think, manufactured on 1004c or use 1004? If 1004c, how do you handle the addition?