Luxury House Extensions, Kensington

Top House Extensions in Kensington | House Extension experts

Contact us regarding your extension

Luxury House Extensions in Kensington: Elevating Your Home to New Heights

Kensington, one of London’s most prestigious areas, is known for its elegant properties and discerning homeowners.

At Home Build Extensions Ltd., we specialise in creating bespoke, high-end house extensions that seamlessly blend with Kensington’s refined architecture while providing the modern living spaces you desire.

House Extensions in Kensington: Key Facts

• Average cost: £2,500 – £3,500 per square meter
• Popular types:

  1. Basement extension
  2. Rear extension
  3. Side return extension
  4. Loft conversion

• Planning permission: Usually required due to conservation areas
• Timeline: 4-6 months for planning, 3-6 months for construction
• Typical value added: 10-20% to property value

Note: Strict regulations in Kensington & Chelsea borough. Consult local architects familiar with area guidelines.

Your local trusted builder in Hampshire
Side Return House Extension inside view of side extension in Surrey UK

Why Choose a House Extension in Kensington?

  1. Increase Your Property Value: In Kensington’s competitive real estate market, a well-designed extension can significantly boost your home’s worth.
  2. Create Tailored Living Spaces: From luxurious kitchen extensions to serene home offices, we craft spaces that cater to your unique lifestyle.
  3. Preserve Historical Charm: Our expert team skillfully combines contemporary design with the area’s Victorian and Edwardian aesthetics.
  4. Avoid the Hassle of Moving: Expand your current home rather than facing Kensington’s challenging property market.

Planning Permission Made Easy:

We'll navigate the planning permission process on your behalf, ensuring your project adheres to all regulations.
This could take 6 - 8 weeks, so allow a good time frame when planning your home extension project.

Expert Architectural Drawings:

Our skilled architects will create detailed and professional drawings that bring your dream extension to life.
These will also be available throughout the project incase you may decide to make a change, or half way through you have noticed you would rather another approach on something that you could'nt see before we started.

Structural Calculations You Can Trust:

Our qualified structural engineers will ensure your extension is safe, sound, and meets all building codes.
The structural frame of the extension and removal of any existing walls, is a very important part of the project, the calculations to your extension need to be accurate to ensure safety of future use throughout the test of time.

Project Management Throughout:

We'll manage every aspect of the construction process, keeping you informed and involved every step of the way.
There for you when you need us, while your project is live, we will be available to come and talk or guide you through any process whenever you feel you need us, just let us know, we will be there to explain any questions or queries you may have.

Our High-End Extension Services in Kensington

Whether you own a stately Victorian townhouse or a chic modern apartment, our high-end house extensions in Kensington are designed to elevate your living experience. We combine historical sensitivity with contemporary luxury to create extensions that not only add value to your property but also enhance your quality of life.

kitchen extension in Camberley, Surrey. extended rear house to open plan kitchen.

Bespoke Kitchen Extensions

Transform your kitchen into a culinary haven with our custom extensions. We incorporate high-end appliances, premium materials, and innovative designs to create stunning open-plan living spaces perfect for entertaining

Side Return House Extension inside view of side extension in Surrey UK

Elegant Side Return Extensions

Maximise your property’s potential by converting unused side alleys into valuable living space. Our side return extensions are expertly designed to flood your home with natural light.

Builders in Camberley - House Extension on a property in Surrey.

Luxurious Rear Extensions

Expand your living area with a sophisticated rear extension. Whether you’re looking for a spacious family room or a tranquil garden room, we’ll create a seamless transition between indoor and outdoor spaces

White exterior Double Storey Home Extension built in the UK

Double-Storey Extensions

For those seeking substantial additional space, our double-storey extensions offer the ultimate solution. We ensure that these larger projects harmonise perfectly with your existing property and the surrounding Kensington streetscape

Award Winning Team

The Home Build Extensions Difference

Personal Consultation:

We work closely with you to understand your vision and requirements.

Bespoke Design:

Our experienced architects create custom designs that complement your home's existing style.

Premium Materials:

We use only the finest materials, sourced from trusted suppliers.

Expert Craftsmanship:

Our skilled team ensures impeccable execution of every detail.

Project Management:

We handle all aspects of the project, from planning permissions to final touches.

Minimal Disruption

We strive to minimize inconvenience throughout the construction process.

Planning Permission for House Extensions in Kensington:

Do you need planning permission for your home extension in Kensington?

Some House Extensions in Kensington, or anywhere in the UK , do not require planning permission, the image below (or to the side, if you're on a computer), showing house extension sizes, this is showing you that these sizes and below do not require planning permission in the uk. With sizes above these in the diagram, they do need planning permission, Obtaining this process can seem daunting, but it doesn't have to be! Here's a simplified breakdown of the process:

Planning Permission checklist


  • Permitted Development Rights: Many smaller extensions fall under permitted development rights, allowing them to be built without formal planning permission. Your local council’s website can provide more information on these regulations.
  • Pre-application Advice: Seeking pre-application advice from your local planning authority is highly recommended. This can save time and frustration in the long run by ensuring your project aligns with local guidelines. A planning officer can offer valuable insights and guidance specific to your project. To find your local council’s planning portal, head over to the GOV.UK planning permission website:
  • Submitting a Planning Application: If planning permission is required, you’ll need to submit a detailed application. This typically includes architectural drawings, structural calculations (depending on the project’s complexity), and a written explanation of your proposal.

Planning Permission Process Timeline: Expect the planning authority to take 8-12 weeks to make a decision on your application.

Home Build Extensions, specialist Builders in Hook, Hampshire
which size for house extension does not need planning permission in the UK
These House Extensions do not require planning permission

Loft Conversions in Kensington

  • Unlock hidden potential: Utilise your loft space in Kensington for a guest bedroom, playroom, or even a home cinema.
  • Budget friendly compared to ground-floor extensions: Avoids the need for additional foundations and extensive groundwork.
  • Height restrictions: Building regulations may limit the headroom available in a loft conversion.
Loft Conversion in the UK
Basement Home Extension space for your home build.

Basement Conversions in Kensington

  • Subterranean space: Creates a unique additional living area, perfect for a home cinema, gym, or games room.


  • Planning considerations: Requires waterproofing and potential structural work, impacting cost.


  • Limited natural light: May necessitate the use of light tunnels or clever design solutions to brighten the space.

Home Extension Projects in Kensington

Our Extension builders in Kensington, take pride in their recent projects, which showcase a commitment to innovation and excellence in building and extending homes.

Our stunning home extensions that seamlessly blend with existing structures, our portfolio reflects the diverse needs and preferences of our Hampshire, Surrey and London clients. Here is just a few pictures of our recent extensions, ask for more detail if you would like a specific idea on a certain extension type.

We have hundreds of pictures and they are updated daily, check our social media for more details on recent home extension projects!

Loft Conversion in the UK
Side Return House Extension inside view of side extension in Surrey UK
Basement Home Extension space for your home build.
Loft Conversion for a Home Extension in the UK

Your House Extension Experts in Kensington, London

Your local trusted builder in Hampshire

A house extension  in Kensington is a fantastic way to achieve Value and Space. Here at Home Build Extensions, we specialise in creating bespoke house extensions in Hampshire, Surrey and London UK. our House Extensions are tailored to your unique needs and budget.

Contact us about your House Extension Project in Kensington

Looking to expand your living space or extend your home in Kensington, Chelsea, or Notting Hill? Home Build Extensions, located in Hampshire (tel: 07754 271410 | email:, is your one-stop shop for high-end house extensions in London.

Your local trusted builder in Hampshire

Office / Service Area

Hampshire | Surrey | London UK



07754 271410

Extending your home to fit your future

Get in touch with us at Home Build Extensions, to discuss your house extension project and guide you through the best way to gain the most from your new open space extension, or an extra bedroom for your new born.

Feel free to contact us.