Topic 2 Overview of the Code for Sustainable Homes & BREEAM

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1 Topic 2 Overview of the Code for Sustainable Homes & BREEAM Planning for Climate Change - Delivering Sustainable Buildings & Quality Design

2 Learning Objectives By the end of this session, you should have a basic understanding of: The key differences between the Code & Ecohomes The aspects of environmental performance assessed under the Code and BREEAM The mandatory credits for Code and BREEAM 2008 The assessment and certification process

3 EcoHomes, BREEAM and the CSH EcoHomes, BREEAM and CSH assessments are the industry established environmental assessment methods for buildings built in the UK. EcoHomes is the housing version of BREEAM and has now been replaced by the CSH for new homes in England and now Wales BREEAM is the assessment method for non residential dwellings and has different versions for various building types

4 Code for Sustainable Homes

5 Difference between the Code & EcoHomes Non-proprietary (i.e. no longer just a BRE scheme) Code can only be used for new homes, not refurbishments Dwellings rated on a scale of 1-6 Less transport credits less geographical variation Revised weightings Individual dwellings assessed rather than groups or developments Minimum mandatory standards for some issues Two-stage assessment procedure (Design Stage and Post Construction Stage) Final certification occurs after completion

6 Code for Sustainable Homes Levels & Point Scores

7 CSH Methodology Waste Mandatory Requirements Materials Surface Water Run-off Energy & CO CO 2 Emissions 2 Water Health & Wellbeing (Level 6) 6) Tradable Credits Assessment Credits Energy & CO CO 2 Emissions 2 Water Waste Materials Surface Water Run-off Pollution Health & Wellbeing Management Ecology Issue Category Scores Environmental Weightings % Score Rating

8 Categories, Credits & Weightings

9 Two-stage assessment Design Stage Assessment evidence for each dwelling provided to Assessor by Developer & Design Team: Specification clauses Drawings Letter of instruction to a contractor/supplier A formal letter from the developer to the assessor Evidence assessed against Code for Sustainable Homes criteria Summary report based on evidence provided produced, confirming where credits have been awarded and the calculated score/rating Report submitted to the service provider for QA and Design Stage certification Service providers confirms Pass/Fail DS certificate awarded/failed issues corrected

10 Two-stage assessment Post Construction Stage Evidence gathered by Assessor for each dwelling e.g. site photos, order forms, certificates (e.g. FSC chain of custody), Bill of Quantities Evidence assessed against CfSH criteria (DS assessment details can be used as a basis for verification against) Summary report based on evidence produced, confirming where credits have been awarded and the calculated score/rating Report submitted to the service provider for QA and Post Construction Stage certification Service provider confirms Pass/Fail PCS certificate awarded/issues corrected

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12 CSH Mandatory Standards

13 Energy - Minimum Standards The % improvement in the actual emissions over the target emissions = % improvement in DER over TER for each Code Dwelling type. Accredited Energy assessor When a building contains more than one dwelling, area-weighted DER and TER for the building as a whole is acceptable. For block of flats area-weighted per floor.

14 Energy Credits (Ene) Ene1 - Dwelling Emission Rate Ene 2 - Building Fabric Ene3 - Internal Lighting Ene4 - Drying Space Ene 5 - Energy Labelled White Goods Ene 6 - External Lighting Ene 7 - Low or Zero Carbon Energy Technologies Ene 8 - Cycle Storage Ene 9 - Home Office

15 Water Minimum Standards Based on consumption of internal potable water in litres / person / day calculated using BRE calculation methodology Levels 1 & 2 Improvement on the proposed water regulations level 120 l / p / d Levels 3 & 4 Cost effective water saving fittings and/or water recycling 105 l / p / d Levels 5 & 6 Water recycling/ rainwater collection 80 l / p / d

16 Water Credits (Wat) Wat 1 - Indoor Water Use Wat 2 - External Water Use

17 Materials Mandatory Requirements At least 3 of the following 5 key elements should be specified to achieve at least a D rating under the Green Guide to Housing Specification (applies to all levels): Roof External Walls Upper and Ground Floors Internal Walls Windows

18 Materials Credits (Mat) Mat 1 - Environmental Impact of Materials Mat 2 - Responsible Sourcing of Materials Basic Building Elements Mat 3 - Responsible Sourcing of Materials Finishing Elements

19 Surface Water Run-Off Mandatory requirements for all Code levels: the peak rate of run-off cannot exceed that of the pre-developed site AND the predicted volume of rainwater discharge should be reduced using infiltration and/or made available for use in the dwelling for non-potable applications

20 Surface Water Run-Off (Sur) Sur 2 - Flood Risk

21 Waste Mandatory Requirements (for all Code levels) Household Waste Storage sufficient waste storage be provided Construction Site Waste Management a site waste management plan is developed & implemented

22 Waste (Was) Was 1 - Recycling Facilities Adequate dedicated internal and external recycling storage Was 2 - Construction Site Waste Management SWMP produced and implemented including best practice procedures and commitments for reducing waste Further credits for procedures covering diverting waste from landfill Was 3 - Composting

23 Pollution Credits (Pol) Pol 1 - Global Warming Potential of Insulants Pol 2 - NOx Emissions

24 Health & Wellbeing Credits (Hea) Hea 1 - Daylighting Hea 2 - Sound Insulation Hea 3 - Private Space Hea 4 - Lifetime Homes mandatory for Code Level 6

25 Management Credits (Man) Man 1 - Home User Guide Man 2 - Considerate Constructors Scheme Man 3 - Construction Site Impacts Man 4 - Security

26 Ecology Credits (Eco) Eco 1 - Ecological value of the site Eco 2 - Ecological Enhancement Eco 3 - Protection of Ecological Features Eco 4 - Change in Ecological Value Eco 5 - Building Footprint

27 BREEAM Developed by the Building Research Establishment (BRE Environmental Assessment Method) Seeks to measure the environmental impact of a specific building Currently, BRE are only service provider Offices, Retail, Industrial, Courts, Prisons, Education (schools, FE, HE) Healthcare, International, Bespoke, Multi-Residential, Developments, Code for Sustainable Homes Different types of assessment Pre-Assessment Design & Procurement Assessments Management & Operation (In Use) Assessments Post Construction Reviews

28 BREEAM 2008 The Headline Changes New BREEAM Scheme released end of July 2008; Two stage certification process (same as Code) Design & Procurement Interim Certification Post Construction Review Full Certification Mandatory credits with minimum standards for certain ratings Ene1 methodology linked to new Energy Performance Certificates New environmental weightings (aligning with Code for Sustainable Homes and the new Green Guide) New performance rating Outstanding

29 BREEAM Ratings and % Scores

30 BREEAM Methodology Management Mandatory Requirements Health & Wellbeing Energy Water Land Use Use & Ecology Tradable Credits Assessment Credits Management Health & Wellbeing Energy Transport Water Materials Waste Land Use Use & Ecology Pollution Issue Category Scores Environmental Weightings % Score Rating

31 BREEAM Standard and Bespoke Standard Schemes Number of credits available in each section varies depending on scheme Environmental weighting of each section is consistent across all schemes Bespoke Schemes Bespoke criteria to be agreed / formulated with BRE Area weighted credits some credits only apply to certain areas OR can be achieved in some areas and not others and still contribute to the score Whole Building credits apply to the whole site/building

32 BREEAM 2008 Mandatory Credits BREEAM Issue P G VG E O Man 1 Commissioning Man 2 Considerate Constructors 1 2 Man 4 Building User Guide 1 1 Man 9 Publication of Building Information 1 Man 10 Development as a Learning Resource 1 Hea 4 High Frequency Lighting Hea 12 Microbial Contamination Ene 1 Reduction of CO2 Emissions 6 10 Ene 2 Sub-Metering of Substantial Energy Uses Ene 5 Low or Zero Carbon Technologies 1 1 Wat 1 Water Consumption Wat 2 Water Meter Wst 3 Storage of Recyclable Waste 1 1 LE 4 - Mitigating Ecological Impact Credits within MAN 1, HEA 4 & HEA 12 are mandatory for all schemes seeking a rating i.e. Pass and above All mandatory requirements have associated credits which contribute to score

33 Mandatory Very Good requirements Man 1 Commissioning in line with best practice & project member appointed to monitor on behalf of the client Hea 4 High Frequency Lighting all fluorescent and compact fluorescent lamps fitted with high frequency ballasts Hea 12 Microbial contamination water systems designed to ACoP L8 Ene 2 Sub-metering of substantial energy uses direct sub-metering of energy uses within the building Wat 1 Water Consumption water use between 4.5 and 5.5m 3 /person/year Wat 2 Water Meter water meter with pulsed output installed on the mains supply to each building/unit LE4 Mitigating ecological impact change in ecological value of site is < 0 and > -9 plant species

34 Exercise

35 Management Credits (Man) Man 1 Commissioning Man 2 Considerate Constructors Man 3 Construction site impacts Man 4 Building user Guide Man 8 Security

36 Health & Wellbeing (Hea) Hea 1 Daylighting Hea 2 View Out Hea 3 Glare control Hea 5 Internal & External Lighting levels Hea 6 Lighting zones & controls Hea 7 Potential for natural ventilation

37 Health & Wellbeing (Hea) Hea 8 Indoor air quality Hea 9 Volatile Organic Compounds Hea 10 Thermal Comfort Hea 11 Thermal Zoning Hea12 Microbial contamination Hea 13 Acoustic performance

38 Energy (Ene) Ene 1 Reduction of CO 2 emissions Ene 2 Sub-metering of substantial energy uses provision of direct sub-metering of energy uses within the building Ene 3 Sub-metering of high energy load and tenancy areas Ene 4 External lighting Ene 5 Low or zero carbon energy technologies Ene 8 Lifts

39 EPC & BREEAM Assessed at As Built as well as Design stage Building modelled using a method compliant with NCM, using Approved software EPC produced by an Accredited assessor

40 Transport (Tra) Tra 1 Provision of public transport Tra 2 Proximity to amenities Tra 3 Cyclist facilities Tra 4 Pedestrian & Cyclist safety Tra 5 Travel plan Tra 6 Maximum car parking capacity

41 Water (Wat) Wat 1 Water Consumption where water consumption is between 4.5 and 5.5m 3 per person per year Wat 2 Water Meter specification of a water meter with a pulsed output installed on the mains supply to each building/unit Wat 3 Major leak detection Wat 4 Sanitary supply shut-off

42 Materials (Mat) Mat 1 Materials specification (major building elements) Mat 2 Hard landscaping & Boundary protection Mat 3 Re-use of building façade Mat 4 Re-use of building structure Mat 5 responsible sourcing of materials Mat 6 Insulation Mat 7 Designing for robustness

43 Waste (Wst) Wst 1 Construction Site Waste Management Wst 2 Recycled aggregate Wst 3 Recyclable waste storage Wst 6 Floor finishes

44 Land Use & Ecology (LE) LE1 Reuse of land LE2 Contaminated land LE3 Ecological value of site & protection of ecological features LE4 - Mitigating ecological impact where the change in ecological value of the site is < 0 and > -9 plant species LE5 Enhancing site ecology LE6 Long term impact on biodiversity

45 Pollution (Pol) Pol 1 Refrigerant GWP Building services Pol 2 Preventing refrigerant leaks Pol 4 NOx emissions from heating source Pol 5 Flood risk Pol 6 Minimising watercourse pollution Pol 7 Reduction of night time light pollution Pol 8 Noise attenuation

46 End of Topic