Abstract. Adaptive reuse, implementing new functions in buildings that originally had
different functions, has been widely applied as a strategy due to the new development high
demands and land scarce. With the paradigm of injecting new commercial functionsthat
fulfill society’s contemporary need such as coffee shops in heritage buildings, it is hoped
to reduce costs, time and energy consumption in the construction process. Using local
materials that are accessed closer to site project can be more environmentally friendly and
economically viable effort without reducing functional and aesthetic quality.However, the
use of technology is still lacking, for it can be an additional solution so thatcoffee shops
have added value that can be successful socially, culturally, economically and
environmentally. Commercial functions that utilize AI technology, big data, the Internet of
things can indirectly support the achievement of sustainable and smart city. Digital
documentation of heritage buildings, commercial spot mapping, visitormotivations and
preferences monitoring can be examples for technology use, even moreover can spread
awareness and knowledge about heritage buildings. This qualitative research method uses
literature study and field observations, with goal to know the role of technology and of
realizing a smart and sustainable city in heritage buildings.