Some cities need more developments with new urban structures & infras, but relatively fully developed city like Manhattan or Tokyo requires more concerns of preservations rather than new developments. When we think about our ceaseless desires to own larger & better residence equipped with preferred materials & functions in good location of the city, the preservation of our historical traces of living cannot be an easy task in urban environment. To satisfy those human desires while achieving urban preservation, the new concept of housing for coming era can be the straight forward additions based on the existing backgrounds to be preserved. It’s not just constructing whole site by one architect’s decision, but it’s collection of various architects’ knowledge with clients’ necessities. To make it simple to understand, the new housing system can be similar to the mixture of smart phone & car industry. Like current car products, people can buy manufactured housing prototypes from some company or architect with numerous options, which can make each house unique from others but relatively cheap, and those manufactured piece with clients’ decisions can be applied to existing housing structure as an additional space or an independent housing like we buy and install applications to our smart phone. There would be various difficulties in terms of adding or removing structures & infras from or to existing conditions. However, the scope of architects’ works in new era should be enlarged further into understanding of what our & our predecessors’ constructions and connect these to future housing methodologies brought by new life style of coming era.