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Brick extension with tiled roof, windows and patio doors

Extension design & planning cost across Croydon with no VAT

Measured surveys from £390 per floor. Extension drawings from £430 each. Full rear extension package £1,210.

Proven excellence

Typical house pricing to guide you

We base our guide prices on a common house type, so the figures feel grounded rather than vague. That gives you a realistic starting point for your own plans.

Separate costs for separate stages

We show drawing fees and application fees as different items. You can see what goes into the design work and what is paid for through the planning process.

A tailored quote for your project

​Some homes and layouts need more tailored pricing. We can discuss the details and give you a project-specific quotation that suits the job.

Domestic plans and applications

Sorting out plans and applications is easier when you have clear guidance from the start. We work around your property requirements, helping you understand what is needed before progressing with your project.

 

Full measured surveys include existing architectural plans and elevations. We also provide design drawings for new extensions, with tailored support for projects involving multiple additions. Structural engineering details can also be arranged where required.

 

Alongside party wall services, Hutchinson Design, Planning & Party Wall Services helps homeowners understand what each stage covers before they commit to the work. Browse our gallery to see examples of our recent work and completed projects.

Professional working on architectural layout with yellow pencil

Cat Savova, Google

We used Gary to redesign areas of our home. He was very helpful and listened carefully to our ideas and wishes. He gave us a variety of options and dealt very effectively with the planning application. We were extremely pleased with his work.

Planning and drawing services

Our planning drawing packages for rear extensions cover the plans, elevations, and relevant internal and external details needed to present your proposal clearly.

 

If your project needs a householder planning permission application, we can guide you through the process and help prepare the required information. If permitted development is more suitable, we can also guide you on a Certificate of Lawful Development for either a proposed extension or a retrospective structure.

 

Hutchinson Design, Planning & Party Wall Services works with homeowners who want straightforward answers and practical guidance before their projects progress.

Property inspector taking notes inside a residential property

Figures you can use to plan ahead

  • Measured surveys

  • Existing architectural plans and elevations

  • Extension design drawings

  • Support for multiple extensions

  • Structural engineering details where required

  • Rear extension planning drawings

  • Householder planning permission applications

  • Planning Portal applications

  • Certificates of Lawful Development

  • Proposed and retrospective development guidance

  • Party wall services

  • Professional planning and design support

​​Hutchinson Design, Planning & Party Wall Services provides clear figures to help you plan.

Domestic plans, drawings and applications

Prices are based on an average two-storey, three-bedroom house.

 

Measured surveys

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  • Full measured survey, including existing architectural plans and elevations: £390 per floor

 

Extension design plans

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  • Design plans and drawings for a new extension, including plans, elevations, and relevant internal and external details: £430 per extension

  • Multiple extensions are priced separately

 

Structural engineering

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  • Structural engineering details, where required: £270 per opening

 

Planning drawing package

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  • Full planning-drawing package for a rear extension to an average two-storey, three-bedroom house: £1,210

 

Planning permission

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  • Householder Planning Permission application: £528 application fee

  • Planning Portal fee: £91

 

Certificate of lawful development

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  • Proposed extension

    • Application fee: £264

    • Planning Portal fee: £91
      ​

  • Retrospective structure

    • Application fee: £528

    • Planning portal fee: £91
       

VAT and quotations

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  • HDPS is not VAT Registered.

  • Contact HDPS for a project-specific quotation.

FAQs

Architect drafting floor plans and measurements on paper

Want a firmer price for your project?

Call today to discuss your extension design & planning costs.

Contact us

Hutchinson Design, Planning & Party Wall Services

46 Ellenbridge Way, 

South Croydon, CR2 0EU

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Opening hours

Monday – Friday: 08:00 - 18:00

Saturday – Sunday: Closed

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