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Studio 20 Architects

Planning Permission

Planning Permission

Through a unique combination of engineering, construction and design disciplines and expertise.

Planning Permission in London

Securing the right approvals is often the most critical step before any architectural project can begin. Whether you’re planning extensions, conversions, façade changes, or full redevelopment, the planning system in London demands careful navigation.

As specialists who work extensively across the capital, we guide homeowners, developers, and businesses through every stage of the approval journey from feasibility assessments to full application submissions. Our role is to ensure your proposal aligns with local policy, technical requirements, and design expectations so the entire process remains smooth, compliant, and stress-free.

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What Needs Planning Permission in the City?

Some small changes do not need City of London planning permission, but many do. This is especially true in conservation areas, heritage zones, and busy city spots. Planning permission is needed for things like changing the outside of a building, adding new windows, using different materials, dividing a space, changing how a building is used, and most work on flats and maisonettes.

Knowing these rules early can help you avoid delays and redoing your plans. We help you find out if your project needs planning permission or not. We also prepare all the drawings, reports, and explanations needed to support your application.

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The Planning Process

Applying for planning permission involves more than completing forms; it requires presenting a robust, policy-compliant proposal that addresses design, impact, heritage, and technical considerations. Our planning support covers:

  • Initial site assessment: Reviewing constraints such as conservation boundaries, local policies, Article 4 areas, and neighbouring properties.

  • Pre-application advice: Engaging with the council early to understand potential concerns.

  • Complete application preparation: Creating architectural drawings, statements, and supporting reports required for validation.

  • Post-submission support: Managing council requests, responding to queries, and ensuring smooth communication until a decision is issued.

Our structured, transparent process ensures your project remains compliant while maximising the likelihood of approval.

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Common Situations That Require Planning Permission

Many property owners are surprised to learn that their planned works require formal approval. Typical scenarios include alterations to flats and maisonettes, converting commercial spaces to residential use, extensions or roof changes in conservation areas, significant facade updates, material changes, and the subdivision or reconfiguration of properties that affect the exterior. Our planning permission services help identify these requirements early. We assess your site, review local policy, and guide you through the correct approval route to avoid delays, reduce costs, and ensure your project moves forward smoothly.

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Why Choose Us for Your Planning Permission Services?

If you have a planning project in mind, get in touch to arrange a free consultation at the studio. Discover how to secure City of London planning permission for your development.

Planning in London can be complex, but with the right architectural partner, the process becomes transparent, coordinated, and confidently handled. We specialise in delivering planning applications that respect policy, respond to design expectations, and articulate your vision with precision. From homeowners to commercial developers, clients choose us for our tailored approach, technical experience, and strong understanding of London’s unique planning landscape. Your project benefits from a team committed to quality, compliance, and successful outcomes.

Expertise in London Regulations

Our architects and planning consultants have extensive experience working across London boroughs. We understand local policies, heritage constraints, and validation requirements, enabling us to anticipate issues before they arise and produce applications that meet council expectations.

End-to-End Architectural Support

Studio 20 Architects team manages your project from start to finish. Services include surveys, drawings, design work, planning statements, and application handling. All steps happen under one roof. This smooth process cuts delays. Every document stays aligned and professional.

Custom Plans for Each Site

Each London site has its own challenges, like hard access, nearby residents’ concerns, or design limits. Custom planning plans are made to show the best parts of your project and lower the chance of planning problems. These plans focus on the strengths and reduce risks for your site’s success.

Start Your Planning Journey With Confidence

Planning applications can be different for every project, especially in a city as detailed and highly regulated as London. Whether you want to make a small change or plan a full redevelopment, the right support can make the process much easier. Our architects and planning consultants use their local knowledge and clear communication to prepare applications that are accurate, well-designed, and easy for councils to review.

With our planning permission services London team, you can move forward with confidence. If you are ready to begin, we will guide you through each step to help you secure approval.

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Here’s what our clients have to say.

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Studio20 Architects
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Bill profile picture
Bill
20:34 16 Nov 25
Hi Nadir and Georghe. We would all like to thank you both. Nadir, for project managing the task so efficiently. We really appreciated your guidance and friendly advice. Georghe, we would like to thank you for your hard work and expertise and especially to thank you and your workers for enabling Andrew to live onsite throughout the build. The house has been transformed. It was a pleasure to work with you all. Paula Bill and Andrew. 🙏
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Morespace Design Info
12:21 09 Sep 25
Swapnil Dhoke profile picture
Swapnil Dhoke
19:25 21 Jul 25
Nadir created Building drawings for our single storey rear and side extension. Drawings have all required details with clear and detailed specifications for structure, foundations, insulation, and drainage that even I can understand. Some of the builders who gave us quote for the build were very impressed with the drawings that they ask for his contact details. I would highly recommend Nadir for his work on building drawings.
Mayuri Parmar Amin profile picture
Mayuri Parmar Amin
14:00 06 Jul 25
We used Studio20 architects to support both planning and building control for our existing house renovation and a new build. They were professional, reliable, friendly and strategic and helped us overcome a planning issue that we were facing with Sutton council. Nadir is really knowledgeable and can provide services to support into the build stage of a project- I would highly recommend them!
Selena S profile picture
Selena S
15:10 18 Jun 25
Nadir has been helping us with the BR designs. Lovely person and clear communication. We are at early stages of building work. We have recommended him already and would be working with him in the future too.
Gavinder Pawar profile picture
Gavinder Pawar
10:21 18 Mar 25
Nadir has done a fantastic work for us-on first visit he gave us clear advice, was proactive with ideas and really helped us after a previous planning failure. He was confident in the right approach to take in both design and planning. We were also impressed at how prompt he was to communicate and complete each stage of the design. Highly recommended!
Duc Trung Phan profile picture
Duc Trung Phan
13:40 04 Dec 24
We renovated our house in 2021. The project was a wrap-around, L-shaped, kitchen & back extension. Studio20 (Nadir) was the architect & project manager while George was the builder. The project lasted 7 months from April to December 2021. I write this review now (December 2024) 3 years after completion as you can only truly assess the quality after the build a few years.

This was my first project and I was nervous at the beginning as every thing was new to us. Nadir was very helpful in guiding us through the entire project from planning stages to choosing materials to assigning builders; giving us assurances that the project would be finished on time and on budget. He also provided us with ideas for interior design. The build was of high quality with great care taken throughout. Geroge and his team were excellent builders and really gave us a peace of mind. There were issues with some of the materials (not their faults but due to Covid restrictions and the subcontractors), all of which were sorted out by Nadir and George between themselves. I’m hugely impressed by the after build care (nagging jobs and other issues). They were all addressed without fuzz.

A true test of a beautiful house is whether you are proud of showing it to guests. I’d say this project has passed this test with the highest score. We are still in love with the extension 3 years after it has finished. We’ve also received a lot of compliments from our guests.

I highly recommend both Nadir and George for their service.
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Frequently Asked Questions About Planning Permissions

Planning permission is approval from the council that allows you to build, extend, or change the use of a property.

No. Some small works may be allowed under permitted development. Many projects still need approval, especially in London.

These are rules that let you make certain small changes without planning permission. The rules are limited, especially for flats and conservation areas.

Flats and maisonettes usually do not have the same rights as houses. Most changes in flats need planning permission.

Often yes. Changing a shop to a home or an office into a flat usually requires approval.

It is a rule used by the council to remove some permitted development rights. This means you must apply for permission even for small changes.

Most likely yes. Even small changes to the outside of a property may need approval in conservation areas.

Yes, if your property is listed. You must get listed building consent before altering the building inside or outside.

You can check the council website or planning maps for your area.

Houses may be allowed under permitted development. Flats usually need full planning permission.

Many extensions require permission, especially in London. The rules depend on size, design, and location.

It depends. Standard homes may not need permission. Flats, listed buildings, and conservation areas often do.

Some small garden buildings are allowed. Larger ones or those used as a living space usually need permission.

Most councils take about eight weeks for standard applications. Larger or more complex projects may take longer.

The council may take enforcement action. You might need to submit a late application or remove the work.

Yes, but approval is not guaranteed. It is safer to apply before starting any work.

You usually need drawings, a site plan, a location plan, and a design statement. Some projects need extra reports.

It is a service where you ask the council for guidance before applying. It helps you understand what is likely to be accepted.

Neighbours can comment, but the council makes the final decision based on planning rules, not personal opinions.

Architects, planning consultants, and specialist planning permission services can guide you and prepare the whole application.

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