Extension Builders
London

JP Refurbishment provides professional extension building services across London, helping homeowners create more space through carefully planned house extensions. From rear and side-return extensions to kitchen, wrap-around and double-storey projects, our team manages construction with a focus on quality workmanship, practical layouts and a finish that complements your existing property.

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Bespoke House Extensions Across London

well-planned house extension can give you the extra space you need without leaving the home and area you already know. JP Refurbishment delivers bespoke house extensions across London, creating practical new spaces that suit your property, lifestyle and long-term plans. Every project is considered individually, with attention given to the existing layout, available space, access, structural requirements and how the new extension will connect with the rest of your home.
 
Whether you are planning a larger kitchen, open-plan living area, home office, additional bedroom or more flexible family space, our team can build an extension around the way you want to use your property. We work on rear extensions, side-return extensions, kitchen extensions, wrap-around extensions and double-storey extensions, depending on the space and requirements of the home.
 
Whether you need a larger kitchen, open-plan living space, home office or extra bedroom, we build rear, side-return, wrap-around, kitchen and double-storey extensions. From planning through to construction and finishing, our team focuses on creating a practical extension that blends naturally with your existing home.
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Extensions Designed Around Your Home

Every property has its own layout, structure and space limitations, so a house extension should be designed around the way your home already works. JP Refurbishment works closely with homeowners across London to understand how the new space will be used, how it should connect with existing rooms and what changes are needed to improve everyday living. We consider factors such as access, natural light, internal flow, ceiling heights, structural requirements and the relationship between the extension and the original property.

Whether you are creating a larger kitchen, open-plan living area, dining space, home office or additional family room, the layout is planned around your practical needs. We also consider materials, doors, windows, flooring, external finishes and other details so the new extension feels consistent with the existing home.

From structural work and construction through to internal finishes and final detailing, our team manages each stage carefully. The goal is to create a practical, comfortable extension that adds useful space while feeling like a natural part of your property.

What's Included in Our Extension Building Service

Site Assessment & Consultation

We assess your property, available space and extension requirements before construction begins. This helps identify access, layout and structural considerations that may affect the proposed build.

Design & Planning

We plan the extension around your property, intended use and construction requirements. Where drawings, structural calculations or approvals are needed, these can be considered before work starts.

Internal Finishing

Once the main structure is complete, we finish the internal space with agreed plastering, flooring, decorating and other details needed to prepare the extension for everyday use.

Professional Construction

Our team completes the main extension build, including walls, roofing, openings and other agreed construction work. We coordinate each stage carefully to maintain quality and consistent progress.

Completion & Quality Check

We inspect the completed extension, review the agreed work and address final details before handover. The aim is a finished space that connects naturally with your existing home.

Structural & Groundworks

We complete the foundations, structural openings and supporting building work required for the extension. Each stage is carried out around the approved design and structural requirements.

Our Extension Building Process

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1

Site Survey & Consultation

We begin by discussing your plans, help you understand how to get planning permission and assessing the existing property, available space and proposed extension area. This helps us understand your requirements, identify practical considerations and determine the next steps for the project.

2

Design & Pre-Construction Planning

Before construction begins, we plan the required works, materials, access and project stages. Where architectural drawings, structural calculations, permissions or other approvals are required, these should be confirmed before the main building work starts.

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Extension Construction

3

Our team carries out the agreed building work, including groundworks, structural construction, external walls, roofing and other required elements. The project is managed carefully through each stage while maintaining communication about progress.

4

Finishing & Final Inspection

Once construction is complete, we finish the agreed internal and external areas and inspect the completed extension. Any final details are reviewed before handover so the new space is ready to become part of your home.

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JP REFURBISHMENT LONDON

Side Return Extensions in London

Dreaming of a bigger kitchen or a sunlit dining area? A side extension could be your perfect solution! At JP Refurbishment London, we help homeowners like you find hidden space. We transform underused alleyways into beautiful, functional extensions. Picture a bright kitchen filled with sunlight from skylights. Consider elegant bi-fold doors that blend inside and out. Our staff can help you add family room, a home office, or just improve your living space. We help you from sketch to conclusion. We manage the planning and building, plus all the little details. You can choose premium fixtures and smart storage options. They make your extension truly unique. Sound like what you’re after? Let’s chat!

JP REFURBISHMENT LONDON

Rear Extensions in London

A rear extension in London is a great way to add living space. It also improves your home’s function and appeal. For a roomy kitchen-diner, a bright living area, or a chic open-plan design. JP Refurbishment London is here to help. They offer custom rear extensions that fit perfectly with your home. We use top-quality materials and modern building methods. This ensures both durability and beauty. You can choose features like glass roofs, bi-fold doors, and custom storage solutions. Our full-service package offers planning help, structural know-how, and project management. This way, you enjoy a smooth extension built to top standards. Ready to unlock your home’s potential? Get a personalised rear extension quote from our London experts today!

Types of House Extensions We Build in London

Rear Extension

A rear extension adds extra space to the back of your home, creating a larger living area or open-plan layout. It improves comfort, natural light, and overall functionality for everyday family life.

Side Return Extension

A side return extension uses the narrow space at the side of your property to widen your home. It is ideal for expanding kitchens and creating brighter, more open and practical living areas.

Kitchen Extension

A kitchen extension gives you a bigger, modern cooking and dining space. It allows for open-plan living, better storage, improved layout, and a more social and comfortable family environment.

Double Storey Extension

A double storey extension adds extra space on both ground and upper floors. It is perfect for increasing bedrooms, bathrooms, or living areas while significantly boosting your home’s value and usability.

Wrap Around Extension

A wrap around extension combines rear and side extensions to create a large, flexible space. It transforms your home with open-plan living, improved layout, and maximum space for modern living needs.

House Extension Builders Across London

JP Refurbishment works with homeowners across London on rear, side-return, kitchen, wrap-around and double-storey extensions. Our team plans each project around the property, available space, access and construction requirements to deliver an extension suited to the existing home.

JP REFURBISHMENT LONDON

How Much Does a House Extension Cost in London?

House extension costs in London vary depending on the size, design and complexity of the project. Factors such as groundworks, structural alterations, access, materials, roofing, glazing, internal finishes and changes to the existing property can all affect the final price.

 

Different extension types also have different construction requirements. A straightforward rear extension may involve a different level of work from a wrap-around or double-storey extension. JP Refurbishment assesses each property and proposed design before preparing a detailed quotation based on the required work, materials and agreed finish.

JP REFURBISHMENT LONDON

Planning Permission and Building Regulations

Planning requirements depend on the size, position and design of the proposed extension, as well as the type of property. Some extensions may fall within permitted development rights, while others may require a planning application. Any relevant restrictions should be checked before construction begins so the project can be planned correctly from the start. Building Regulations are separate from planning permission and can apply to areas such as structural safety, insulation, fire protection, ventilation and other construction standards. Drawings, structural information and any required approvals should therefore be considered during the planning and pre-construction stages.

 

Because every property is different, the requirements should be confirmed for the individual extension rather than assumed from another project.

Why Choose Us

JP Refurbishment London has completed countless renovations and home improvements in London. Our focus and determination are both solely centred around you, the client. Your satisfaction is what makes us tick, and is the driving force that helps us to create and renovate the most stunning spaces.

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Planning a House Extension in London?

Speak with JP Refurbishment about your proposed extension and the extra space you want to create. Whether you’re considering a rear, side-return, kitchen, wrap-around or double-storey extension, we can discuss the project, assess your property and provide a detailed quotation based on the work required.

Frequently Asked Questions About House Extension

The cost of a house extension in London depends on its size, design, structural requirements, materials, access and level of finish. Rear, side-return, wrap-around and double-storey extensions can all involve different levels of work. JP Refurbishment assesses each property and project before providing a detailed quotation based on the work required.

The timeframe depends on the size and complexity of the extension, structural work, access and finishing requirements. A straightforward single-storey project may take less time than a larger wrap-around or double-storey extension. Before construction begins, we plan the main stages of the work and provide a clearer project timeframe based on your proposed extension.

Not every house extension requires full planning permission, as some projects may fall within permitted development rights. This depends on factors such as the extension’s size, position, property type and any restrictions affecting the home. Planning requirements should always be confirmed for your individual property before construction starts.

Most house extensions need to meet relevant Building Regulations, which can cover structure, insulation, fire safety, ventilation and other construction requirements. Building Regulations are separate from planning permission. The requirements depend on the proposed work, so they should be considered during the design and pre-construction stages of your extension project.

JP Refurbishment builds different types of house extensions across London, including rear extensions, side-return extensions, kitchen extensions, wrap-around extensions and double-storey extensions. The most suitable option depends on your property, available space and how you want to use the new area. We can assess your home and discuss an extension approach suited to your requirements.

We can support the extension project from the early planning stages through to construction and final finishing, depending on the agreed scope of work. This may include site assessment, planning of the build, structural and groundworks, main construction and internal finishing. Our aim is to keep each stage coordinated so the finished extension connects naturally with your existing home.

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