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We are here to offer you tailored advice and provide a quotation, absolutely free.

How it works

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Select the date and time you are available and submit your booking request. It will be automatically confirmed.

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You will receive an invitation, where you can find a Zoom link. Don’t forget to add the date and time on your calendar.

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One of our architects will be waiting for you in the arranged video call. Tell us about your plan and get advice.

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If you are happy with working with us, please contact us to confirm your work.

Why Choose Our Architect Services In London and Surrey?

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We know your local area and the rule of planning permission of your borough

We’ve had more than 1600 successful planning applications approved since we started to help clients turn their dream home projects into a reality. We’re very proud of our success rate and how we can cater to all your planning needs. Take a look at some examples of the projects we were granted planning permission for in this case study

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We provides a comprehensive range of expert planning consultancy services

Your personal planning consultant will visit your property, home or office at a time that suits you and discuss your project in further details. Later the technician will come and complete a full site survey. Our teams then discuss and agree what works and changes could be included in

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We’re the leading residential Architecture Studio in London

We at Extension Architecture provide a wide range of project, development and management services. Whether dealing with fast track refurbishment projects or large- scale mixed use developments, we work closely with all partners from the outset to lay the required processes and structures in place to ensure timely delivery

Questions about London residential architect

For many reasons, a video call with our experienced staff is the quickest and easiest way for many to get a consultation. This is true more than ever, especially if you have concerns over Covid-19.

You can show us your home, even present visual ideas and vice versa from the comfort of your home. We can share our designs and 3d visualisations in real time, and we can discuss both designs and planning stages, with open transparency.

Single-Storey Rear Extensions: The good news is, if you live in a terrced or semi-detached house in 2020, Local Planning Authorities have relaxed the rules and allow for extensions to go to 6 meters . If you live in a detahced house, single storey rear extensions can be up to 8 meters in depth. Just be aware that if your property type is a flat, maisonette or in a conservation area, then you will need full planning permission.

Side Extensions: Side extensions fall under permitted developent if they do not extend more than half the width of the original house. You can extend a maximum of 3 meters as long as it is a single storey extension and does not extend pas the front elevation.

Double-Storey Extension: As of October 2019, new rules are being phased in which will allow homeowners to build extensions onto detached homes without requiring planning permission, under the usual rules of permitted development. This will make adding a two-storey extension to your home no more complicated than having a loft conversion. This doesn't mean that there is no paperwork involved in undertaking a two-storey extension, but it will make obtaining permission for the extension much simpler.

Loft Extensions: Roof extensions/should be set back, as far as reasonably feasible by at least 20cm from the eaves, unless it is a hip or gable roof (measure the 20cm along the plane of the roof). The roof extension should not hang over the wall of the house.To be a Permitted Development any additional roof space created must not exceed these volume allowances: 40m3 on terraced or emi-detached houses, 50m3 on detached houses

If you believe that your property falls under permitted development, the best way to ensure a positive result is to consult the advice of an Architect to ensure that your extension follows these rules which are applicable to all extensions:

  1. Materials should match the existing house
  2. No raised platforms, balconies, or terraces
  3. Single storey extensions should not be more than 3 meters high
  4. Must not be taller than the existing building
  5. The extension should not take more than 50% of garden space

Permitted Development Rights are a set of policies which allow homeowners greater freedom to add value to their home whether it's increasing your property price or simply to add floor space. By acting upon these rights you can extend your property to a certain degree, without the need for Full Planning Permission, which can be a more expensive and time-consuming process, as long as you comply with relevant rules.

This generally applies to the single-storey side or rear extensions, loft conversions, front porches, double storey extensions, outbuildings, solar panels, skylights of dormer windows and new windows or doors. However, even Permitted Development has its restrictions and does not cover double-storey extensions, larger loft conversions, flats or properties in conservation areas. Regardless, even if you meet all the requirements for Permitted Development, you will still need to submit your plans to council which they will need to check, and approve.

For a full planning application, you will need good knowledge of the local guidlines, an appropriate design and a full set of accurate architectural drawings. Many Architects will do drawings but not offer extensive planning advice and submit your application on your behalf. On the other hand, Planning Counsultants have expert knowledge of regulations and can therefore play a vital role in obtaining permission for projects with complex needs, but where do both options leave you after your application has been granted...or refused? At Extension Architecture we understand that planning and building involves a lot of head-scratching, that's why we guide you through the whole process, every step of the way. Extension Architecture specialises in design AND planning consulting and do not charge for submission and liaison with the council. We design, submit planning applications, building regulations with our in-house engineer, construct with trusted buiilders and offer creative interiors with our very own kitchen range. Why bother with the hassle if we can do it all for you?

Building Regulation drawings and control are very important because they insure the safety of people in buildings. Building approval means that your building complies with the national set of standards to protect people's health and safety in and around buildings. Some examples of what building regulations include are structural calculations, fire-safety, insulation, damp-proofing, foundations, heating, ventilation and accessibilty. Once you have received planning permission, building regulation drawings will have to then be submitted and approved before you can start construction. Just remember, cow-boy builders are always risky business and Local authorities have power under the Building Act 1984 to enforce non-compliant building work altered or removed.

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