Fee Calculator

Renovations, Extensions and Loft conversions

This calculator provides estimated fees only. The final cost will depend on several variables including the context, complexity of the design, and material finishes.

It does not include legal fees, statutory fees, other third-party fees, and VAT.

  • When comparing our fees please note that our standard approach is a specialist architects service, and we understand that this may not suit every project's needs.

    • We do drawings, but we also project manage the whole design process, coaching you through all the decision making, processes and approvals. This takes a lot of time, and means our fees are higher than plan drawing services.

    • We typically produce a greater quantity of detailed drawings than usual, with the aim to exceed current building regulations, ensure quality, and reduce cost risk during your build.

    • We carry out all services in house as part of our design process including heat loss and u value calculations, visualisations and bespoke construction drawings.

    • We usually work with clients who want to build using healthy materials, specialising in timber and wood fibre insulation, while minimising the use of plastic, concrete, and steel. 

  • Measured survey of existing house

    Drainage survey (CCTV)

    Structural engineer

    Planning / permitted development fee

    Party Wall surveyor

    Building Control fee

    Trial holes to investigate existing foundations

    Build over agreements (local water authority)

    Fixtures, fittings and finishes that are traditionally client supply - kitchen, bathrooms, flooring, light fittings

    10-15% contingency

Ready to get the ball rolling?