This style is also known as neo-eclectic. Developers popularized the full spectrum of architectural historic styles with even looser interpretations. No one period has become dominant. The main characteristic of this style is the increased footprint (maximizing land value causing these houses to be iconically labeled McMansions). This explosion of square footage has been tattooed with historic details over its complex massed forms and multiple steep pitched roofs. The floor plan (due to social changes) has created the basis of this new house style with the living room moving to the back of the house and connecting to rear outdoor living spaces.
Informal, 1990-present, the "Not So Big House" movement, brought on by this look, along with that of the New Urbanism ideals promoting walkable towns, has created the balance to the exploded scale structures of this era. Architects nationally have created smaller houses, unique blends of historic and modern styles, on tighter lot sizes while integrating new materials and technology.