Title page -- Table of Contents -- Preface -- Introduction -- The Utrillo Building Rehabilitation Project -- Change of Identity of ``Geldershoofd'' in Amsterdam - Bijlmermeer -- Techniques for Adaptation of the Structures of a Multi-storey Family House in Florence -- A Future for WBS 70 -- The Franz-Stenzer Building Block as Case Study -- Creating Flexibility for Better Use of Space in Dwellings in Multi-storey Buildings -- Restoration of the `Planeten flats' in Helmond -- Rebuilding Modern Housing for Increased Sustainability -- Enlargement of Balconies and Upgrading of Existing Residential Building Daskal Kamcev street number 1 in Skopje -- Enlargement of Balconies of Existing Residential Building ``Karpos'' in Skopje -- Techniques of Structural Alterations and Improvements in Relation to the Urban Building Envelope - Malta -- Adding an Extra Storey -- New Facade Combined With Inside Rebuilding -- Reconstruction, Enlargement, Adding Storeys and Revitalization -- Adding Two Storeys to Existing Building -- Annex of Attics on Flat Roofs of Urban Residential Buildings -- Case study Siersteenlaan, Groningen - Vinkhuizen, The Netherlands -- Adaptations and Improvements on a Refugee Estate in Cyprus -- Externally Bonded Steel or Carbon Fibre Reinforcement -- Balconies, Loggias and Different Thin-walled Units in Large Panel Buildings -- Recycling Prefabricated Building Components for Future Generations -- Reuse Possibilities of Dismantled Building Elements from Pre-fabricated Concrete Buildings -- Typical Measures on Load Bearing Building Elements During Modernisation -- Safety Evaluation of External Sandwich Panels in Large-panel Buildings -- Refurbishment of Multi-storey Residential Building in Relation to the Building Envelopes -- Conclusions -- COST C16 Management Committee -- COST C16 Working Group Members.