2012 Consultation on changes to the Building Regulations in England. (with focus on Part L Non Domestic) BSRIA Workshop 14 March 2012

Transcription

1 2012 Consultation on changes to the Building Regulations in England (with focus on Part L Non Domestic) BSRIA Workshop 14 March

2 2012 Consultation Context The 2012 Building Regulations consultation package Part L Proposals New Homes New Non Domestic Buildings Calculation tools Existing buildings Timetable Responding to the consultation 2

3 Deregulate and streamline wherever possible Reduce burdens to business Smaller role for Government Red Tape Challenge Regulate only when essential One In One Out (OIOO) General Context Where a new regulation imposes a net cost to business in this needs to be offset by at least an equivalent net reduction or benefit out Spending Review Commitment to reduce the burden for home builders Moratorium Commitment to exempt micro businesses from new regs up to 2014 Further improve compliance 3

4 Consultation Package: Overview The consultation package was launched on 31 January 2012 The consultation is made up of four sections: 1 An introduction and overview of the package, plus various technical amendments relating to Parts A, B, C, K, M, N and Regulations 7 2 Changes to the energy efficiency provisions in Part L 3 Changes to provisions on electrical safety in the home 4 Changes to the building control system The package is supported by nine Impact Assessments Also supported by an easier to read summary of the consultation proposals

5 Part L Policy Drivers Allowable solutions Carbon compliance Energy efficiency Relative proportion of end-use energy demands (non-domestic) 100% 80% 60% 40% 20% 0% Office Hotel Lighting HWS Auxilliary Cooling Heating CCA targets, UK Carbon Plan, Greenest Government Ever Zero Carbon, commitment to continuous improvements in the energy efficiency of new housing European requirements EPBD2 Nearly Zero Energy Buildings Flexible performance based approach that reflects challenge of improving different types of building

6 1,000m 2 floorspace Importance of new and existing stock Need new buildings and important to cut energy/carbon footprint from them but many buildings in 2050 will be existing ones i.e. pre Part L ,200,000 Age profile for non domestic building stock 1,000, , , , , Year pre-2010 Source: "energy efficiency in new and existing buildings: comparative costs and CO2 savings, BRE Trust

7 Summary of Part L Changes New Buildings Take meaningful step towards zero carbon, 2016 (homes) and 2019 (non-domestic) whilst respecting deregulatory commitments and growth agenda Compliance & Performance Proposed regulatory incentive to develop and use quality assurance processes to help ensure as-designed performance of new homes is delivered on completion Existing buildings Some tightening of performance standards for extensions and controlled fittings and services Proposals to introduce consequential improvements recognising the introduction of the Green Deal to drive retrofit of existing stock 7

8 Part L: New Non-domestic Principles Move towards zero carbon though longer trajectory to 2019 Zero carbon definition to regulated energy only Unlike homes, end goal for on-site zero carbon standards not set Recognise the diversity of the non-domestic sector CO 2 target metrics to stay the same for 2013 i.e. based on aggregate approach differentiated by building type absolute targets considered inappropriate Fabric backstops retained in Approved Document guidance and services backstops in Non Domestic Building Services Compliance Guide as control upon energy efficiency 5 step compliance criteria retained and minor changes to guidance 8

9 Part L: New Non-domestic Approach Concurrent Notional Recipe Actual U-values and efficiencies BER Actual size, shape, orientation, uses, weather and system types but......notional U-values and efficiencies Actual Building Notional Building TER

10 Part L: New Non-domestic Targets Combinations of fabric and services improvements modelled to deliver overall aggregate improvement across new build mix and inform concurrent notional building 2013 recipes A1 A2 A3 0.0% 8.8% 13.5% B1 B2 B3 1.6% 10.3% 15.0% C1 C2 C3 3.8% 12.3% 17.1% D1 D2 D3 6.2% 14.7% 19.4% Once fabric and services measures exhausted 2013 target further improved by adding LZC technologies to concurrent notional building recipes PV used as a proxy

11 Part L: New Non-domestic Targets PV only technology applicable in all cases % roof area covered in PV (expressed as % floor area) % roof area covered in PV

12 Part L: New Non-domestic Targets Target aggregate reduction 8% Resultant target reduction 11% Resultant target reduction 14% Resultant target reduction 20% Resultant target reduction Warehouse (distribution) Office (Deepplan, AN) Warehouse (Retail) Office (Shallowplan, AN) A2 5.6% B2 8.9% C3 16.1% C3+1.6% 20.1% A2 11.9% A2 11.9% A2 11.9% A3+1.6% 23.4% A2 6.8% B2 8.0% C3 13.6% C3+1.6% 16.2% A2 12.2% A2 12.2% A2 12.2% A3+1.6% 23.1% Hotel (5-star) A2 8.8% C2 11.0% C2 11.0% C3+1.6% 15.0% Secondary School A2 8.3% C2 11.0% C2 11.0% C3+1.6% 17.4% PV required on notional building None None None Panel area 1.6% of floor area on roof

13 Part L: New Non-domestic Targets Options 11% improvement generally achievable through fabric and services improvements only - 4 MtCO2 in lifetime savings (by 2022) 20% improvement likely to require building-integrated renewables for most building types best long term benefits for businesses through energy savings - 8 MtCO2 in lifetime savings the preferred option. Modelling based on six building types see cost curves Interested in views on impacts for different sectors e.g. small warehouses 13

14 Calculation Tools New Non Domestic Buildings New concurrent notional buildings side-lit heated only; side-lit including cooling; top-lit; un-lit. csbem provided to help consultees assess the impact and inform consultation response available at Proposals to formalise consideration of innovative technologies into SBEM (Appendix Q) Proposals to form an SBEM Integrity Group

15 Notional Building for 20% aggregate

16 Notional Building for 20% aggregate

17 Calculation Tools

18 Compliance and performance Evidence gathering and debate has largely focused on new homes Is there evidence of a performance gap for non-domestic? If there is, are Building Regulations the right tool to deal with it, or is this more a user and/or commercial issue? Consultation proposes that ADL2A signposts benefits of Soft Landings as a procurement tool Consultation also proposes changes to the Building Control system including voluntary option for developers to use Appointed Persons complementary to supervision by building control? What qualifications/experience & roles/responsibilities should these have? On- site co-ordination?

19 Non Domestic Fabric Standards Largely unchanged, but: New walls Clarification on U-value of out-of-plane rooflights (NARM NTD 2) Separate category for buildings that are essentially domestic in character Walls Roofs Floors Windows Band C Band B (1.4) Renovation standards unchanged Part L: Non Domestic Existing Buildings Regulations and guidance for conservatories unchanged

20 Part L: Non Domestic Existing Buildings Non Domestic Building Services Compliance Guide Eco Design Directive requirements: fans, comfort cooling and pumps Controls: Band C to BS EN 15232:2007 unless specified otherwise Specific fan power: reference to EN13779 Table A8 guidance on system pressure drop to minimise SFPs Lighting: alternative approaches Average initial efficacy increased from 55 to 60 luminaire lumens per circuit-watt with greater range of control factors, or Lighting Energy Numerical Indicator (LENI)

21 Consequential Improvements: Principles Only consider notifiable building work for triggers Proportionate requirements Green Deal availability Technically, functionally and economically feasible

22 Consequential Improvements: Homes (to set context for Non Domestic) Extensions Increases to habitable area loft conversions, integral garage conversions 10% value guide Boiler replacement Replacement windows >50%? Specified list of measures Combination of extension / boiler / window proposals: 130MtCO 2 saved

23 Part L: Non Domestic Consequential Improvements Current Provisions for Buildings > 1,000m 2 No change proposed triggers remain: Extensions Initial provision of a fixed building service Increase to the installed capacity of any fixed building service How are these arrangements working now?

24 Part L: Non Domestic Consequential Improvements < 1,000m 2 Assumptions about buildings >1000m 2 Extensions Increases in habitable space 4.1m equivalent annual net benefit to business. 0.4Mt CO 2 saved Fabric? Difficult due to cost differences? Fixed building services and controlled fittings? IA case studies on services (chiller and air handling unit)

25 Part L: Consequential Improvements Process What measures? SBEM measures eligible for Green Deal Approved Document (L2B) list More difficult for replacement services How to work out what to do Get a Green Deal assessment combines Energy Performance Certificate with occupancy assessment to generate package of measures meet Golden Rule, or Consult valid Energy Performance Certificate, or Discuss with builder and liaise with Building Control Body (extensions) Supported by Approved Documents with information available via DirectGov, Planning Portal, Green Deal Advice Service and LAs

26 Part L: Consequential Improvements Timing All requirements come into force from October 2012, or Phased: domestic extensions & increase habitable space only from October 2012 with all other requirements including non-domestic from April 2014 Government preference for phased approach: More time to consider process More time to consider application to non-domestic buildings

27 Part L: Non Domestic Consequential Improvements? Thoughts for Discussion Group Are we right in our assumptions on buildings below 1000m 2? Nature of stock and potential improvements Compliance process Is it possible to set triggers based on replacement components/services, or are differences between buildings too great? Will business be attracted to the Green Deal and make these improvements voluntarily?

28 Part L: Timing of changes Proposing that changes come into force on: Domestic extensions consequential improvements October 2012 Deregulatory changes April 2013 Regulatory changes October 2013 (with aim of having published 6 months before this) Remaining domestic and non-domestic consequential improvements April 2014 Also signalled that we would consider timings and transitional arrangements as part of the consultation e.g. to minimise the impacts on small businesses

29 Responding to the consultation Consultation timetable Consultation closes 27 April Part L consequential improvements / Green Deal aspect by 27 March How to respond Consultation documents including an easier to read summary, impact assessments, supporting research and response forms available on DCLG website (Future of Building Regulations page): ns/buildingregulationschanges/ responses preferably on standard form to: building.regulations@communities.gsi.gov.uk 29

30 THANK YOU