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When you’re thinking about home extensions, it can be hard to know where to start.

Planning Direct has a team of dedicated planning experts and offers a comprehensive extension planning and design service in one convenient package.

From this page, you can find more information about the planning and design processes for extensions, the benefits of using architectural practices and planning consultants, and an idea of how much your extension is likely to cost, so that you can make an informed decision about taking on our services and arrange your FREE, FRIENDLY, NO OBLIGATION initial consultation today. 

Home extensions come in many different guises; from loft conversions to double-storey side extensions and the simple rear extension, there are variety of possible solutions that we can design to get the most from your property and budget. We start from the basis of what’s possible planning wise and what you need, in order to create the perfect design.

Extension Example Drawing 1

So do you need planning permission for an extension?

Extensions, loft conversion and conservatories are generally considered to be permitted development, however there are some general rules to take note of:

  • It must not be higher than the original building
  • Materials must be the same or similar
  • It cannot cover more than half the land (as it was when built)
  • Single storey extensions must not be higher than four metres; the rear must not extend beyond the rear wall by more than three metres and to the side no more than half the width of the house
  • Double storey extensions must not be less than 7m from the rear boundary
  • No balconies or roof terraces
  • Upper floor glazing must be opaque

Whilst in theory permitted development requests should go through quickly and easily, our experience has shown that this is rare.

Planning authorities often use a myriad of reasons to stop the proper implementation of Government Policy, meaning what you thought was an easy extension, may not be so easy after all. A properly constructed Certification of Lawful Use application will ensure you have your development approved properly and inexpensively.

Full planning permission for loft conversions, rear and side extensions and double-storey extensions doesn’t have to be expensive. By choosing experienced architectural and planning consultants from the get-go,​ you can get it right first time.

Extension Example Drawing 4

Why use a planning consultant for a house extension?

As planning consultants, we at Planning Direct know which house extensions are possible, and which simply won’t be approved. This saves clients’ money up front, as it prevents them making applications for home extensions or loft conversions that are likely to be rejected. With a high success rate, you’re almost guaranteed to have your planning application approved first time. We have an Architectural Technician in-house. Our clients say using us for drawings instead of a firm of Architects is considerably more cost effective. We do however have established relationships with a number of Architectural Practises who we recommend when th need arises.

There are a lot of applicants that come to us after other firms push through planning applications that still get rejected. We’re often able to appeal those decisions successfully, but sometimes the planning application for the house extension was never going to get through, no matter what. Our expertise as planning consultants and architectural planners means we don’t make these mistakes. We get it right.

Extension Example Drawing 2

So how much does the package cost for a house extension design and planning application?

Our fixed fee offer includes a site consultation and measure up, design of your extension and submission and handling of the application with the local planning authority all the way through to approval. With many years experience in household architecture and a high success rate with planning applications, our package is second to none – and we have many happy clients to prove it. Here’s just one of them:

“5 star! Well, where to start… First of all business. If Planning Direct offers a service you need then their number is the only contact you need. They covered it all for us and made it affordable. Second, Andrew – I think you understand how much this decision meant to me and my family and words could never express my gratitude towards you. Two previous Planning Consultants told me it was impossible to win. One from the area told me it was always just ‘wishful thinking’ that I would ever gain permission. From the first phone call, I felt I had found the right man for the job. And you exceeded all expectations. You are an outstanding Planning Consultant and I’m very lucky you worked alongside us. Forever grateful, Martin and Becky.”

Our fixed fee packages are based upon single storey or double storey rear extensions (the most popular type of extension). For side and rear extensions, we’re still here! Please get in touch via 01473 407911 or, and we’ll have a look at your request for free and send you a fixed fee quote.

Are you considering an extension? Want to find out more without the pressure? Call now for a FREE, FRIENDLY, NO OBLIGATION initial consultation.

What Our Clients Say About Us

  • “Wonderful news. Thank you for your incredible support and professional assistance”.

    You should consider using a Planning Consultancy to apply for Change of Use. There are a number of angles which we can adopt in order to put forward a succinct and thorough proposal to your local council in support if your application.

    Read how we won this case here

    Contact us to discuss your case on 01473 407911.

    Planning Direct wins another Change of Use Planning Application in London

  • “Amazing service, contact was kept throughout… always very helpful. All my questions were answered straight away… Absolutely I would recommend Planning Direct without a doubt”

    If you need to apply for retrospective Planning Permission, or indeed you need to appeal a decision Planning Direct can help you.

    Here’s how we helped this client – read more here

    Planning Direct wins retrospective planning appeal – “Amazing Service” says happy client

  • “I just want to thank your firm for the change of use you got us in Rush Green. Jamie has pulled it out the bag and sent us that good news today, he is so patient he just kept chewing at them until they said yes”.   

    If you have a  piece of land which you think could be developed Planning Direct could help you obtain the planning permission to realise its’ potential.

    Click here to read how we won this case.

    Is there room for a house in your garden?

  • “Andrew and Nikki worked hard and efficiently on our change of use application with a positive outcome and I believe this was all down to their expertise and experience, we would recommend them to anyone and would not hesitate to use them again in the future. Great work”.

    Are you looking to expand your business? Have you considered purchasing a neighbouring property and extending into it? Planning Direct can help you obtain Planning Permission for Change of Use.

    Read the full article here

    Suffolk business now able to expand thanks to Planning Direct

  • Thank you so much for your help with this – best investment I’ve made so far in engaging you – I thought your document to the Planning Inspectorate was first class and worth every penny.

    When our Planning Application was refused for the second time we felt the reasons for refusal were weak. We asked Planning Direct whether we had good grounds for appeal. Ben was extremely positive about the points of our case, he reviewed all of the documentation we provided him and also used his own extensive knowledge of other appeals and associated decisions.

    The result was an outstanding 15-page document that clearly set out the reasons for the Councils refusal along with the positive counter-arguments and references to precedent cases for presentation to the Planning Inspectorate.

    The end result…. our appeal was upheld and permission was granted. We would not be in this position without Ben’s fantastic attention to detail and his way with words in presenting the case.

    Mr K Swinburne, New Build Family Home

  • I just wanted to express my extreme gratitude to you for your help with our recent planning application to extend our home.

    From our first call, I was impressed with the way your handled our case and it was evident from the word go that you knew exactly what was needed to get our application granted.

    I especially appreciate your prompt and efficient service, considering the tight deadline that I gave you.

    I am sure that without the work that you did to support our original application and in response to the councils request to alter our application, we would not have been granted the planning permission for the size of extension that we wanted and would have had to settle for a smaller space that would not have worked for my family.

    Once again, thanks for your winning service.

    Tanvir Choudhury, Home Extension

  • With my sincere thanks to you Andrew for everything you done! No doubt I’ll be in touch again when this goes to committee. Best wishes, Leigh

    Leigh-Jane Miller, Gallions Point Harbour Ltd

  • Andrew worked tirelessly on documenting our objection statement and writing our respective three minute presentations for the Development Control Committee. Our sincere thanks go to Andrew Cann for his diligence, guidance, attention to detail and highly professional approach in helping Bardwell and Stanton Parish Councils with this planning application.

    Andrew Smith on behalf of Bardwell and Stanton Parish Councils

  • I want to place on record my thanks to you for all you have done to advise and assist Pakefield Opposing Tesco in our campaign to stop Tesco taking over the Tramway Hotel in Pakefield, Lowestoft.
    The reports you produced were professional, well researched and very knowledgeable about the processes and operations of local authority planning departments and development control committees.
    Your work made a major contribution to our campaign which has so far successfully prevented a much loved local building and community facility becoming just another retail store that the local community doesn’t want or need.
    Thank you for your work.
    Best wishes
    Bob Blizzard

    Bob Blizzard – Chair, Pakefield Opposing Tesco

  • I worked with Andrew when the Crossrail Bill, which at the time would have had a severe effect on rail freight, was being considered by the House of Lords. He is a canny operator (pun intended) and was quick to grasp the case and how best to present it to peers who were intelligent but ignorant of the facts. I would recommend him for a project management or strategic role in the ports or freight sector or in an equivalent industry.

    Angus Walker Partner / Head of Department at Bircham Dyson Bell



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