SumProject offers architecture and engineering that breathes and organises space, which is pleasant and efficient, which is innovative and technical. Sum focuses on complex historical city centre and sustainable development projects, often dealing with the restoration, the integration of new functions in and the extension of listed buildings. SumResearch, a full branch office and steady partner of SumProject, has specialised in policy development and preliminary studies for the public and the private sectors. It delivers high standard consultancy in building history, urban planning, master planning, traffic engineering, tourism planning, social & socio-economic planning and housing. Sum is for more than 50 years active on local, regional and international scale.