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Residential Architects in

Kensington and Chelsea

Extension Plans offer a fast, affordable, one-stop solution for all of your planning permission and building regulation needs in Kensington and Chelsea! 

Architects In
Kensington and Chelsea

Welcome to Extension Plans, your premier Kensington and Chelsea architects, specialising in residential architecture, home extensions, and loft conversions. Our team of expert residential architects is committed to turning your home dreams into reality, offering affordable and efficient solutions.

At Extension Plans, we revolutionise residential architecture by delivering cost-effective home extension and loft conversion services without compromising on quality.  

Discover a new era of architectural efficiency and let us enhance your living space with our expertise in home extensions and loft conversions.

Why We're Your Ideal Partner

ARB Architects

Talented architects with proven track records drive our projects.

Cost-Effective

Save money with our Budget friendly services, delivering exceptional results

All Inclusive

Don't worry about outsourcing any aspect of your project with our comprehensive service

Quick Turnaround

Progress to the construction stage with minimum delay with our streamlined service.

Our Services - Kensington and Chelsea

We pride ourselves on delivering an all-inclusive architectural service to our clients, with a vast amount of experience, with rear extensions, loft conversions, and outbuildings. By working with us, you eliminate the need to outsource various components of your project, streamlining the entire architectural process under one roof.

Architectural Design Drawings

Our experienced team has worked on every type of residential alteration throughout the years and we are excited to share our knowledge with our customers!

Building Regulations

Our team excels at creating precise, compliant drawings, ensuring alignment with safety, thermal, and structural requirements.

Structural Calculations

Once our architects have crafted your vision into architectural drawings, our engineer steps in to produce precise structural calculations.

Party Wall Services

Party wall notices are a crucial legal step, and as part of our comprehensive architectural services, we include the preparation of the party wall notices within our process.

How it works

Our streamlined process ensures you’re matched with the ideal member of our design team, who will guide you through every step, from concept to completion

Book a free consultation with one of our experts

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Completed projects

We have experience with every property type

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Plan Turnaround

Get your project started without delay

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5 Star Reviews

We put our customers first

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Years experience

We have a vast amount of experience in this area

What makes us stand out from the crowd

Unlimited Support

Call our office at any time to discuss your project. We are also on hand for questions from your builders until construction has been completed.

We handle everything

We have an experienced administration team to submit and handle your applications so you don't have to.

Immediate Start

We are available to start work on your project within a couple of days!

Dedicated Designers

You will be working directly with the member of our team that is best suited to your project.

Detailed Drawings

Our drawings are created with the best architectural software available ensuring your plans are created to the highest standard.

Fixed Prices

We offer fixed, competitive prices so you can budget accurately for your build.

View some of our recent projects

Our experienced team specialises in rear extensions, double-storey extensions, single-storey extensions, loft conversions, and internal renovation projects, bringing extensive expertise to every project in Kensington and Chelsea

What our customers say

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Ck Hui profile picture
Ck Hui
11/07/2024
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Competitive pricing. Swift response. My plans have just been approved. I am happy with this company.
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Labina Rahman profile picture
Labina Rahman
30/05/2024
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
It has been a pleasure working with Mackenzie Petcher and Kamila (Architectual Designer) at Extension Plans UK. They are a rear mix of professionalism, responsiveness, great value for money and skill. We would not hesitate to recommend them.
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Jas Melling profile picture
Jas Melling
15/05/2024
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great service from Extension Plans UK. Plans were drawn up swiftly and the whole process was much quicker than we expected, and at a reasonable price. We dealt with Joshua, Mackenzie and Philip who were all great and very responsive.
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nadia Hajian profile picture
nadia Hajian
02/05/2024
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Thanks for your service. Very impressive service . Rebecca is very professional and consistently available to help. Joshua patiently change the drawings till we achieved what we liked. Phil the initial contact gave a clear quotations.
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Dyll Davies profile picture
Dyll Davies
29/04/2024
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Absolutely superb service from start to finish. The service is end to end and you are dealing with people who 1. know what they are talkin g about and 2. seem genuinely keen to make sure you get what you want. I cannot recommend them enough to anyone planning a building project. Top notch - and I am a fussy beggar!
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Sunaina Singh profile picture
Sunaina Singh
25/04/2024
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Good experience. Value for money especially on simple projects.
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Alex Lambe profile picture
Alex Lambe
15/04/2024
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Extension Plans Uk were great from start to finish, quick to respond and quick to produce drawings. Mackenzie, Kamila and Natalia were all brilliant. Alex, Kempston.
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Francis Walker profile picture
Francis Walker
11/04/2024
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I highly recommend Extension Plans UK, amazing value for money! We have been delighted with the service and professionalism from Philip and his team, who listened to our ideas and helped us see them through to completion.
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RajOsteo profile picture
RajOsteo
25/01/2024
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Really helpful when I had issues with my original architect. Rebecca was friendly and thorough, and also chased up loose ends to make the process as smooth as possible. Would happily recommend!
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Richard Newlove profile picture
Richard Newlove
09/05/2023
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A* - Excellent.

Unlock the potential of your property in Kensington and Chelsea

Schedule a free consultation! We would love to offer free advice, discuss your design ideas or get things moving with your project.

FAQs

Our design process begins with an initial consultation with your dedicated designer. We will discuss your vision, requirements and we will provide ideas for your design based on previously completed projects. From there, we move through conceptual design providing a first draft plan for your consideration. Following this we can revise the plans in any way you like to ensure you a completely happy with the design. 

The timescale of a project differs, depending on the proposal. We can visit your property within a couple of days and have the first draft plans with you in roughly 14 days. 

In some cases, building work can begin within a couple of weeks. In others, the timescale can be up to 4 months, depending on your project’s requirements. 

Yes, we work with a dedicated team of experienced engineers who take care of all structural calculations and beam specifications. This allows us to manage every technical detail, so you won’t need to outsource this essential service.

Yes, we employ fully qualified architects within our design team to ensure our plans are created to the highest possible standard. 

With over 7 years of collaboration with Kensington and Chelsea Council, we’ve built a trusted relationship with their planning officers and are well-versed in their guidelines. This expertise ensures a smooth and efficient planning process for your project.

Yes, we organise all necessary applications on our customer’s behalf. We will submit the required application and act as the agent throughout the process to ensure approval is received as swiftly as possible

Yes, we create our plans with industry-leading software and are able to create 3D images to allow you to accurately visualise your design. 

In most cases, we have trusted building contractors that we have worked with in your area, in the past and we would be happy to organise build quotations for you to consider 

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