Kate Wagner is taking on the project of writing the history of the McMansion year by year. She’ll tackle the state of American culture and architecture over the past 50 years, and how those things collided to bring us the McMansion. This could easily be a book by the time she reaches 2020. The first installment focuses on 1970, and a “proto-McMansion,” a home built that year with some foreshadowing of what the McMansion would eventually become and a mishmash of 1970 style (carpets and dark wood) and 1980 style (brass and glass) with more ostentatious French and Colonial styles.
Though this house tends to feature more Louis XV-style furniture (my suspicion is that this might be evidence of an 80s or 90s era redecorating), the emphasis on bulky, ornate 18th century reproduction furniture, moldings, and wallpaper is indicative of the fascination in the 1970s towards the (American) Colonial era in anticipation of the 1976 American Bicentennial.