<p><strong>OECD/IEA JOINT WORKSHOP ON SUSTAINABLE BUILDINGS: TOWARDS </strong><br><strong>SUSTAINABLE USE OF BUILDING STOCK </strong></p><p><strong>TABLE OF CONTENTS </strong></p><p>Introduction................................................................................................................................................. 9 Objectives.................................................................................................................................................... 9 Summary of discussions............................................................................................................................ 10 <br>Introductory Session.............................................................................................................................. 10 Session 1: Trends and Issues: Where are we going? ............................................................................. 10 Session 2: What is SUBS?..................................................................................................................... 10 Session 3: What should be done to promote SUBS?............................................................................. 11 Session 4: Flexible Use of Building Stock ............................................................................................ 12 Session 5: Vitalization of the Market for Existing Buildings................................................................ 12 Session 6: Upgrading the energy efficiency of existing buildings ........................................................ 13 Session 7: Information tools contributing to the promotion of SUBS................................................... 14 Session 8: The Role of the Government, the Private Sector and NPOs in Promoting SUBS................ 15 Closing Session...................................................................................................................................... 17 <br>Findings of the workshop.......................................................................................................................... 17 <br>(Findings related to general issues) ....................................................................................................... 17 (Findings related to regulatory tools) .................................................................................................... 18 (Findings related to economic tools) ..................................................................................................... 18 (Findings related to information tools).................................................................................................. 18 </p><p>ANNEX 1&nbsp;FINAL AGENDA/ISSUE PAPER ............................................................................................ 20 <br>AGENDA / ISSUE PAPER ...................................................................................................................... 20 Objectives.................................................................................................................................................. 20 </p><p>ANNEX 2&nbsp;WORKSHOP PAPERS ............................................................................................................. 30 TOWARDS SUSTAINABLE URBAN RENAISSANCE (HIROTO IZUMI)............................................ 30 <br>1. Introduction........................................................................................................................................... 30 2. Environment Problems in Japan............................................................................................................ 30 <br>Climate change and energy use ............................................................................................................. 30 Material use and waste use .................................................................................................................... 31 <br>3. Economic Problems............................................................................................................................... 34 4. Urban Renaissance Policy in Japan....................................................................................................... 35 5. Examples of Urban Renaissance Project............................................................................................... 35 <br>Regional level........................................................................................................................................ 35 City level................................................................................................................................................ 36 District level .......................................................................................................................................... 36 <br>6. Urban Renaissance and Sustainable Use of Building Stock ................................................................. 37 7. Conclusions........................................................................................................................................... 38 </p><p>EXISTING BUILDINGS, A HIDDEN RESOURCE, READY FOR MINING (RONALD ROVERS) ..... 40 <br>1. Overview &amp; Classification.................................................................................................................... 40 <br>Classification of existing stock.............................................................................................................. 41 <br>2. Some Figures......................................................................................................................................... 41 </p><p>2<br>3. Potential................................................................................................................................................. 42 <br>EU &amp; energy potential........................................................................................................................... 43 Labour.................................................................................................................................................... 43 Materials efficiency............................................................................................................................... 43 <br>4. Drivers and Barriers .............................................................................................................................. 44 <br>A1 Demolition permit policy................................................................................................................. 44 A2 Tax-policies ..................................................................................................................................... 44 A3 Land use and pricing........................................................................................................................ 44 A4 Modernisation drive......................................................................................................................... 44 A5 location ............................................................................................................................................ 45 B1 Ownership........................................................................................................................................ 45 B2 Rest value......................................................................................................................................... 45 B3 Economic investments horizon........................................................................................................ 45 B4 Change of use................................................................................................................................... 45 C1 costs.................................................................................................................................................. 45 C2 labour ............................................................................................................................................... 45 C3 roots.................................................................................................................................................. 45 <br>5. Theory Approach................................................................................................................................... 46 6. Change and Solutions............................................................................................................................ 47 <br>Mind setting........................................................................................................................................... 47 <br>7. Examples............................................................................................................................................... 48 8. Conclusions........................................................................................................................................... 49 </p><p>PAPER OECD MEETING SUSTAINABLE USE OF THE BUILDING STOCK (RONALD ROVERS) 53 <br>EU &amp; energy potential........................................................................................................................... 56 Labour.................................................................................................................................................... 56 Materials efficiency............................................................................................................................... 56 <br>Mindsetting ............................................................................................................................................... 60 </p><p>DEVELOPMENT OF URBAN INFRASTRUCTURE -&nbsp;THE HIDDEN CHALLENGE FOR RESOURCE EFFICIENCY WITHIN THE BUILDING STOCK (GEORG SCHILLER) ............................................... 64 </p><p>Abstract ..................................................................................................................................................... 64 Keywords .................................................................................................................................................. 64 1. Introduction........................................................................................................................................... 64 2. Basics .................................................................................................................................................... 65 <br>Local Technical Infrastructure Facilities............................................................................................... 65 Infrastructure Expenses and Urban Density .......................................................................................... 65 The Urban Structural Approach............................................................................................................. 66 Material Stock Within Residential Areas .............................................................................................. 66 Life Span of Infrastructure Networks.................................................................................................... 67 <br>3. Modelling the Mass Flow and Land Use of Future Housing Development.......................................... 68 <br>Model Components................................................................................................................................ 68 Analysis Options.................................................................................................................................... 69 Central Findings of Model Calculation of Future Housing Development............................................. 70 <br>4. Conclusions........................................................................................................................................... 71 </p><p>SUSTAINABLE URBAN BUILDING STOCKS (NILS LARSSON)........................................................ 74 <br>Introduction............................................................................................................................................... 74 How buildings contribute to Climate Change ........................................................................................... 75 Approaching a Strategy for Performance Improvement ........................................................................... 76 The importance of housing and housing areas.......................................................................................... 77 </p><p>3<br>New construction v. renovation ................................................................................................................ 81 Key factors that need to be addressed ....................................................................................................... 82 Specific strategies and measures............................................................................................................... 83 Conclusions............................................................................................................................................... 85 </p><p>SUSTAINABLE IMPROVEMENT&nbsp;OF THE EXISTING BUILDING STOCK&nbsp;(RANDALL THOMAS)86 <br>Abstract ..................................................................................................................................................... 86 1. Introduction........................................................................................................................................... 86 <br>What conditions are required for the reuse of the existing building stock to be successful? ................ 86 <br>2. The Charter School, Southwark, London.............................................................................................. 87 3. The Contact Theatre, Manchester ......................................................................................................... 88 4. LSO St Luke's, London......................................................................................................................... 88 5. London's Transport Museum, London .................................................................................................. 89 6. Conclusion............................................................................................................................................. 90 </p><p>THE EXISTING HOUSING TYPOLOGY IN JAPAN AND THE IMPROVEMENT SCENARIOS OF THE RELATED HEAT INSULATION PERFORMANCES (KAZUO IWAMURA) ............................... 97 </p><p>Abstract ..................................................................................................................................................... 97 <br>PART 1......................................................................................................................................................... 98 <br>1. Introduction........................................................................................................................................... 98 2. Objectives.............................................................................................................................................. 99 3. Study method ........................................................................................................................................ 99 4. Results................................................................................................................................................. 100 <br>4-1. Heat insulation ratio of each major building part (cf. Figure 1-1): .............................................. 100 4-2. Comparison according to the Energy Conservation Standards in Japan:..................................... 101 <br>5. Typology of conventional wooden houses.......................................................................................... 102 6. Conclusion........................................................................................................................................... 104 </p><p>PART 2....................................................................................................................................................... 106 <br>1. Introduction......................................................................................................................................... 106 2. Target Values Given in the Guideline for Measures for Preventing Global Warming ....................... 106 3. Test calculation of the reduction effect on the energy consumption by stock renovation .................. 107 4. Comparison of the energy saving effect according to the scenarios ................................................... 109 5. Conclusion and Future Issues.............................................................................................................. 111 </p><p>SUSTAINABLE ACCOMMODATION FOR THE NEW ECONOMY:&nbsp;LIKELY IMPACT ON THE FUTURE COMMERCIAL DEVELOPMENT OF LONDON (ANDREW HARRISON)........................ 114 </p><p>Abstract ................................................................................................................................................... 114 Key words ............................................................................................................................................... 115 Introduction: City intelligence and the knowledge economy.................................................................. 115 The Commercial Development of London.............................................................................................. 117 The Current London Property Market..................................................................................................... 119 The London Plan..................................................................................................................................... 120 Changing Requirements for Business Space in London ......................................................................... 122 <br>Demand for prestigious space.............................................................................................................. 124 <br>Sustainable Accommodation for the New Economy (SANE) ................................................................ 125 The SANE Space Environment Model: a New Distributed Workplace Model ...................................... 125 The Implementation of a Distributed Workplace Strategy...................................................................... 129 The Benefits of a Distributed Workplace Model .................................................................................... 131 The Risks of a Distributed Workplace Model......................................................................................... 133 </p><p>4<br>Summary: The City as Workplace in The Knowledge Economy ........................................................... 134 Acknowledgements................................................................................................................................. 136 </p><p>REGENERATION OF SMALL/MEDIUM SIZE BUILDING STOCK BY FLEXIBLE RE-FITTING SYSTEM (TOMONARI YASHIRO)......................................................................................................... 137 </p><p>1. Introduction......................................................................................................................................... 137 2. Contexts in Japan ................................................................................................................................ 137 <br>2.1 Demographic condition of building stock ..................................................................................... 137 2.2 ‘Conversion’ and regulatory framework........................................................................................ 138 2.3 Scattered vacancy in declining areas ............................................................................................. 139 2.4 Difficulty to raise budget for refurbishment by building’s owners ............................................... 139 <br>3. Key Concept for Solution - Infill as Movable Property ...................................................................... 140 4. Requirements to Define Infill as Movable Property............................................................................ 141 <br>4.1 Legal requirements for movable property ..................................................................................... 142 4.2 Physical requirements for movable property................................................................................. 142 <br>5. Development of Prototype Infill System as Movable Property........................................................... 143 6. Instruments for New Business Model ................................................................................................. 144 <br>6.1 Contract model based on service level agreement......................................................................... 145 6.2 Organization design for all-in service............................................................................................ 145 6.3 Integrated IT tools for business operation ..................................................................................... 145 <br>7. Demonstration Project in Downtown Area ......................................................................................... 146 8. Lessons for Policy Design................................................................................................................... 147 <br>8.1 Implication of the developed methodologies................................................................................. 147 8.2 Policy design for holistic approach................................................................................................ 148 8.3 Policy design for cultural change .................................................................................................. 149 <br>9. Concluding Comments........................................................................................................................ 150 </p><p>ENHANCING THE FLEXIBILITY OF BUILDING USES THROUGH LIQUIDATION OF REAL ESTATES (TETSUJI ARIMORI).............................................................................................................. 151 </p><p>Abstracts.................................................................................................................................................. 151 Contexts................................................................................................................................................... 151 <br>1. Why is liquidation important? ......................................................................................................... 151 2. Is liquidation being promoted?........................................................................................................ 151 3. What are the examples of investment structures’ contribution to effective uses?........................... 152 4. What are the trends in the relationship between investment structures and Sustainable Use of Building Stocks (SUBS)? .................................................................................................................... 153 5. What are the barriers?&nbsp;How should we overcome the barriers? ..................................................... 153 6. About information disclosure .......................................................................................................... 153 </p>