I will talk about 'space of multi-voices' through my own experiences as a housing planner in a regeneration project of a low-income public housing estate where many problems such as physical dilapidation and social deterioration have deepened. We adopted an experimental method of what we call 'work-shop', de-constructing 'boundaries' among the conventional roles of tenants as passive and silent beneficiaries, local government as landlord and manager, and architects as technical professionals. The renewal work which induced multi-voices led to a success, making new livable space emerge. Modern architecture constructs pure definition of space through automatic and bureaucratic social relationships. But what should be thought about is how can we listen to and what should be done with 'multi-voices'.