Owen Jones argued that ‘construction should be decorated. Decoration should never be purposely constructed.’ That means he advocated the use of models from other period and cultures, and also allowed for the possibility of constructing original patterns base upon the study of a nature tempered by the rules he enumerated. In The Grammar of Ornament (1856), he said “Flowers or other natural objects should not be used as ornament, but conventional representations founded upon them sufficiently suggestive to convey the intended image to the mind, without destroying the unity of the object they are employed to decorate.”
I agree with his opinion, ornament and color was adopted for the decoration of buildings during that time. However, not every complex pattern, luxurious or aesthetic decoration fit with the construction. They can serve them, then will have organic combination with each other.
The Steiner House, Vienna, 1910
The picture I have added is the Steiner house in Vienna. Adolf Loos work leads directly into Modern architecture. He carried on a determined argument against decoration – architecture should be utilitarian. I think it is a good example of 'construction decorated'. He argues that to put all of the attention in the austere exterior and not consider what was going on in the stylized interior negates the classical values that are manifest through the building. For Loos, the exterior was the public side of the house, that is the reason for the bare wall surfaces. Inside his buildings used spaces in relation to their function. Steiner House is without ornament, symmetrical, the different size of the windows reflect the different functions of the spaces.