• Energy Performance Certificates

    Need an EPC

  • Extension Plans

    A full comprehensive design service for Extension plans

  • SAP Calculations

    Providing a nationwide service undertaking SAP Calculations

  • New Dwelling Design

    Fully comprehensive design service for New Houses

  • Comparative SAP

    Help to justify extensively glazed extensions with Comparative SAP

  • 3D Modelling

    Assist with planning applications and client visualisation, explore our 3D Modelling service

  • Building Control Advice

    A service aimed at Architects and Architectural Technicians, friendly Building Control Advice


RGP Building Design and Energy Consultancy

What we do

RGP Building Design and Energy Consultancy are experts in providing a fully comprehensive building design service. We specialise in providing architectural design services for extension plans, new dwellings, conversions, commercial and industrial projects and 3D modelling. We also undertake energy rating services such as SAP calculations, comparative SAP calculations and energy performance certificates; this enables us to deliver the complete design package. We serve a large demographic area covering Suffolk and Essex, and regularly have projects in Colchester Borough, Ipswich Borough, Babergh & Mid Suffolk District Councils and towns such as Ipswich, Colchester, Bury St Edmunds, Woodbridge, Kesgrave, Sudbury, Great Cornard, Stowmarket, Needham Market and surrounding villages.

We offer a free consultation service if you wish to discuss your project in further detail so please feel free to contact us. We also have a dedicated page for client feedback.

News Feed


  • SAP Calculations

    RGP can prepare whole house SAP calculations nationally for new build properties.

    SAP Calculations
  • Extension plans

    We can prepare your extension plans for Planning and Building Regulation approval

    Extension plans
  • EPC’s

    Moving house or renting? You will need an Energy Performance Certificate (EPC)

  • Comparative SAP

    Want more glazing in your extension? Comparative SAP can help achieve your design

    Comparative SAP
  • Building Control Advice

    A full and comprehensive Building Control advisory service for Architects & Technicians

    Building Control Advice
  • 3D Modelling

    3D modelling can help clients visualise and assists in difficult planning situations

    3D Modelling
  • New dwelling plans

    A fully comprehensive design package for new build properties.

    New dwelling plans

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