What is the Code for Sustainable Homes?

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Julie Lisa Fisher
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1 What is the Code for Sustainable Homes?

2 Background Key features Technical Guide Code levels Minimum standards Assessment process Certificates Non-Code dwellings Costs vs Benefits Overview

3 Background Supercedes BREEAM EcoHomes Mandatory requirements: England -April 2007 : mandatory L3 in all social housing -May 2008 : mandatory for all new dwellings to have a Code rating Wales -May 2008 : mandatory L3 for all social housing Northern Ireland -June 2008 : mandatory L3 for all social housing

all new dwellings to have a Code rating Wales -May 2008 : mandatory L3 for

4 Key features Nine categories of environmental sustainability Applied at the level of individual dwellings 2 stage process Design Stage Assessment and Post Construction Assessment Mandatory performance standards for energy, water, materials, waste and surface water runoff, health and well-being 6 level rating system ««««««a tool for marketing and a mark of quality The Code aims to drive the standard of housing forward

standards for energy, water, materials, waste and surface water runoff, health and well-being 6 level

5 The Technical Guide Public Document PDF format andbuilding/codeguide Purpose of the guide Process of obtaining a code rating Scoring Environmental weightings Categories Issues References Remember there are updates!

uk/publications/planning andbuilding/codeguide Purpose of the

6 Energy and CO 2 Emissions Water Materials Surface Water Run-off Waste Pollution Health and Wellbeing Management Ecology

7 Environmental Categories and Issues Categories No. of Issues Example Energy and CO 2 emissions Water Materials Surface Water Run-off Waste e.g. Internal Lighting e.g. Indoor Water Use e.g. Environmental Impact of Materials e.g. Flood Risk e.g. Composting Pollution Health and Well-being Management e.g. Nitrogen oxides e.g. Daylighting e.g. Considerate Constructors Scheme Ecology TOTAL: 5 34 e.g. Ecological Value of Site -

g. Indoor Water Use e.g. Environmental Impact of Materials e.g. Flood Risk e.g. Composting Pollution Health and Well-being Management 2 4 4 e.

8 Scoring Process Energy Water Materials Surface Water Run-off Waste Pollution Health & Well-being Management Ecology Category Scores Environmental weighting Final score Level 1 Level 2 Level 3 Level 4 Level 5 Level 6

Management Ecology Category Scores Environmental

9 Categories of Environmental Impact Total Credits Available, Weighting Factors and Percentage Points. Total credits in each category Weighting factor (% points contribution) Approx. weighted value of each credit (percentage point) Category 1 Energy and CO 2 Emissions % 1.26 Category 2 Water % 1.5 Category 3 Materials % 0.30 Category 4 Surface Water Run-off % 0.55 Category 5 Waste % 0.91 Category 6 Pollution % 0.70 Category 7 Health and Wellbeing % 1.17 Category 8 Management % 1.11 Category 9 Ecology 9 12 % 1.33 Total % -

weighted value of each credit (percentage point) Category 1 Energy and CO 2 Emissions 29 36.4 % 1.26 Category 2 Water 6 9.0 % 1.

10 Code levels and points score Code Levels Total Percentage Points out of 100 (equal to or greater than): Equivalent Rating (Energy -approx) Level 1 («) 36 Points Above Regulations EST Good Practice Level 2 (««) 48 Points EST Best practice Level 3 («««) 57 Points Possible without LZC energy sources Level 4 (««««) 68 Points PassivHaus EST exemplary Level 5 («««««) 84 Points Zero SAP Level 6 (««««««) 90 Points Zero operational carbon

Points EST Best practice Level 3 («««) 57 Points Possible without LZC energy sources Level 4 (««««) 68

11 Minimum standards Categories Energy Water Materials Surface Water Run Off Waste Health & Well-Being Pollution Management Ecology Flexibility 6 levels of minimum standards one for each level of the Code Three levels of minimum standards each covering two levels of the Code A single basic standard at Code entry level Level 6 Only No minimum standards

for each level of the Code Three levels of minimum standards each covering two levels

12 Ene 1 - Dwelling Emission 15 Credits Rate % Improvement in CO 2 when compared to Building Regulations targets Defined by Building Regulations AD L1A Calculated using SAP 2005 Mandatory Percentages for all Levels Builds on EST energy efficiency standards L3 High building fabric/systems efficiency L4 PassivHaus standard L5 100% Improvement over TER L6 Beyond SAP, true zero carbon

Percentages for all Levels Builds on EST energy efficiency standards L3 High building

13 Ene 1 Dwelling Emission Rate % improvement of DER over TER Credits Mandatory Levels 10 % % 2 18 % % 4 25 % % 6 37 % 7 44 % % 9 60 % % % % % 14 5 Zero Carbon Home 15 6

22 % 4 25 % 5 3 31 % 6 37 % 7 44 % 8 4 52 % 9 60 % 10

14 Wat 1 - Indoor Water Use 5 Credits Theoretical average water consumption, using normalised use patterns Measured in Litres / person / day Measure water used (l/p/d) by: WC / bidet Basin taps Shower Kitchen sink taps Bath White goods Water softeners

/ person / day Measure water used (l/p/d) by: WC / bidet

15 Wat 1 - Indoor Water Use Water consumption (litres / person / day) Credits Mandatory Levels 120 l/p/day 1 Level 1 and l/p/day l/p/day 3 Level 3 and 4 90 l/p/day 4 80 l/p/day 5 Level 5 and 6 N.B 150l/p/day is typical

Level 1 and 2 110 l/p/day 2 105 l/p/day 3 Level 3 and 4

16 Sur 1 - Management of surface water runoff from developments Single basic standard No credits for meeting mandatory Hydrological consultant/engineer needed Incorporates PPS25 Very simple for some sites, can be difficult for others!

mandatory Hydrological consultant/engineer needed

17 Sur 1 - Management of surface water runoff from developments Surface water runoff no greater post development than pre development Peak Rate Run-off no greater Volume of Run-off no greater Typically involves soakaways, rainwater harvesting, holding tanks, permeable paving etc.

Rate Run-off no greater Volume of Run-off no greater Typically

18 Mat 1 - Environmental Impact of Materials 15 Credits Rates specifications based on environmental impact over life cycle Based on BRE Green Guide rating A+ to E ratings Assessment covers: Roof External walls Internal walls Floors Windows

cycle Based on BRE Green Guide rating A+ to E ratings

19 Mat 1 - Environmental Impact of Materials 3 out of 5 named elements will need to be rated D or above 3 elements which are rated D will result in compliance with the mandatory requirement, but no credits will be awarded Green Guide 2007 Rating Credits A+ Rating 3 A Rating 2 B Rating 1 C Rating 0.5 D Rating 0.25 E Rating 0

the mandatory requirement, but no credits will be awarded Green Guide 2007

20 Was 1 - Storage of non-recyclable waste & recyclable household waste A suitable area of sufficient size to house the greatest volume of EITHER All containers provided by the Local Authority (Refuse and Recycling) OR The minimum capacity as calculated using BS 5906:2005 Storage area accessible to all, particularly wheelchair users

provided by the Local Authority (Refuse and Recycling) OR The minimum capacity as

21 Hea 4 - Lifetime Homes 4 Credits Mandatory at Level 6 ONLY Accessibility to and within dwelling Potential for future adaptability Adhere to all principles of Lifetime Homes (applicable to the dwelling) Checklist with 16 sections

22 Mandatory Requirements Summary Energy % Improvement CO 2 over Building Regulations target Water Average water consumption (litre/person/day) WC, taps and shower fittings key Surface Water Run-off Run-off pre and post development Materials Minimum Green Guide rating D in 3 elements Roof, external walls, internal walls, floors, windows Waste Minimum volume for waste storage Health and Welling Being Lifetime Homes Level 6 ONLY

23 The Assessment Process Site to be assessed Pre-Assessment/ Pre Planning Advice Employ assessor Registration Design Stage Report BRE Training & Licensing For each dwelling Technical Advice / Process support Quality Assurance BRE issues Interim Certificate For each dwelling PC Stage report submitted For each dwelling Quality Assurance and Final Code Certificate For each dwelling

24 A Two-stage Process Design Stage Based on design drawings, specifications and commitments Results in Interim certificate of compliance Most up-to-date certificate to go into HIP

25 A Two-stage Process Post Construction Stage To show the Design Stage assessment goals have been met or If any material changes, for them to be identified and reassessed Surveys, photos, manufacturer s information, invoices etc.

26 Certificate Certificate presents: Details of the development Overall rating and score Breakdown of score by category EPC CO 2 rating

27 Interim and Final Certificates Interim certificate issued after report passes Design Stage QA process Final certificate issued after report passes Post Construction Stage QA process No assessment can claim to have an assessed Code Rating unless a certificate has been issued

28 Nil-rated Certificates Building to the Code performance standards is not compulsory BUT the provision of information relating to the sustainability performance of the dwelling is. New homes built to minimum Building Regulations standards require a nil-rated certificate in the Home Information Pack

29 What the Code Cannot Assess 1. Refurbished homes EcoHomes still in use in England and Wales: For all refurbishment projects For existing assessments registered under EcoHomes For sites where it is required as a result of contractual commitment

30 What the Code Cannot Assess 2. Any development that is not a standard home Sheltered homes Nursing homes Student accommodation Prisons Military accommodation Can be assessed using other schemes

31 Costs? Initial indicative costings compiled from theoretical information; Cost Analysis of The Code for Sustainable Homes (CLG, 2008) TABLE : Costs to achieve Code levels, variety of dwellings (wind excluded) Market town: Detached home End terrace Flat Code level three 4,991 (5%) 5,027 (7%) 2,922 (4%) Code level four 11,733 (13%) 9,490 (13%) 6,059 (8%) Code level five 22,197 (24%) 18,738 (25%) 12,267 (15%) Code level six 38,817 (43%) 31,747 (42%) 21,251 (27%) Source: Housing Corporation

32 Benefits? Environmental benefits Plus: Increased building value Lower running costs Improved health and well being of occupants Inclusive design Future proof buildings

33 Background Key features Technical Guide Code levels Minimum standards Assessment process Certificates Non-Code dwellings Costs vs Benefits Overview

Code for Sustainable Homes Guidelines

Canoldir Penrhos Anglesey LL65 2TS Phone: 01407 860666 Email: saps@easonline.co.uk www.easonline.co.uk Code for Sustainable Homes Guidelines A CSH rating is the responsibility of the Developer/ Architect