Building Regulations

Further to the Planning stage, a Building Regulations application will need to be made to the Local Authority Building Control department.

Technical survey of site
A survey will be undertaken to cover any areas not surveyed during the initial measured survey.

Building Regulations Plans, Sections and Construction notes
A preliminary set of plans and notes shall be prepared for discussion and any amendments can be made.

Preparing and submitting the Building Regulations Application
A cheque payable to the Local Authority for the application fee** is required from you and also settlement of the balance of ArchitEXE Ltd fees. The application is submitted using the preliminary drawings to the local authority for consideration and if necessary to a structural engineer and/or a heat loss assessor for them to provide a quotation for their services.

**Building Control fees vary depending on the extent of the work proposed. For an extension up to 40m2 the fee is currently £510.64 and varies between authorities.

Instruct Engineer
Once a quotation has been received from the engineer for their calculations and they will need to be instructed by you to proceed.

Revised plans
Once the Building Control Officer has responded to the preliminary submission, any necessary amendments are made, giving additional details if requested and resubmitting the revisions along with the structural calculations etc.

Typical extension building regulations drawing

Building Control Approval
Once the local authority are happy that the information they have is sufficient, they will issue an approval. This may have conditions requiring further input by you, your builder or ArchitEXE Ltd.

The table below shows ArchitEXE Ltd fees for preparing building regulations drawings and submitting these to your local council's Building Control department for building regulations approval. ArchitEXE Ltd will act as your Agent during the application process and deal with all correspondence and negotiations with Building Control on your behalf.

Type of Proposal Our Fee 
Single storey extension £748
Loft conversion £748
Two storey extension £948
Multiple extensions (combination of the above) £1148
SAP Heat Loss Calculation if required £180

These fees are for a typical project and will be confirmed at the initial meeting if applicable to your project. For some more individual projects, a fixed fee quotation can be provided following the initial consultation. A higher fee would be applicable if the planning stage is not undertaken by ArchitEXE Ltd.

The above fee includes printing costs.

The above fee excludes the council's building regulations fees which will vary depending on the size and value of the work.

The above fee excludes any structural engineer's fee which may be required for structural calculations. A quotation will be provided by a qualified structural engineer.

The above fee excludes any heat loss calculation fees. Some projects that have a high proportion of glazing may require an energy performance calculation known as a 'SAP Calculation' which will be charged separately.

Fee Payment Terms
An instruction deposit is for 50% of the fee is due, with the subsequent 50% due for payment prior to submission of the Building Regulations application.

VAT is not applicable to ArchitEXE fees.



  • "I honestly thought we would have more trouble in planning, but nothing, thank you very much, it looks great!"

  • "Fantastic work, thank you. You made the application seem a doddle!"

    AlanN. Cornwall
  • "Clear detailed plans from start to finish, extension looks superb, Thank you"

  • "Despite an uphill struggle with the planners, we persevered and have a fantastic home to show for it, thanks for all your help"

  • "Thank you so much for your hard work, support and perseverance! We really do appreciate your determination and professionalism which has, in no doubt, ensured the success of the planning application."


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