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A popular residential and commercial area, Isleworth is the ideal place for couples and young families to set up a home. But every home eventually runs short of space.

This is where home extensions come in.

A home extension is an opportunity for homeowners to upgrade and expand their homes to suit their specific needs and lifestyles. At the same time, house extensions allow property to owners the chance to increase the value of their properties at a fraction of the cost of moving houses.

A home extension is the perfect way to add space and value to a home without having to incur the cost and inconvenience of moving houses. Home extensions allow homeowners to plan, design, and create beautiful new spaces that are the perfect addition to the family home.

With a multitude of options based on space requirements and the area available, home extensions in Isleworth are categorised into different types such as:

Rear extensions

An incredibly versatile and popular type of extension, rear extensions occupy the rear area and back garden area of a property. These types of extensions can be used to create guest rooms, kitchen extensions, and office pods.

Wrap around extensions

A combination of rear and side extensions, wrap around extensions add immense width and depth to a property. This allows homeowners the opportunity to add multiple rooms, larger kitchen-diners, or even create open floor layouts.

Side return extensions

Side return extensions utilise the area at the side of the property along with a portion of the rear area. These are often preferred to rear or wrap around extensions as they do not use up too much of the garden space. Side return extensions have enormous potential in creating the beautiful indoor-outdoor connections that are coveted in modern dining rooms.

Multi-storey extensions

Though more complex than single-storey extensions, multi-storey connections are highly sought-after as they essentially double the square footage of single-storey extensions without adding to the roofing and excavation expenses. These extensions are perfect for adding bedrooms, bathrooms, and offices.

Except for certain extensions of limited sizes that fall under permitted developments, planning permission and building regulations approval is required for house extensions in Isleworth.

The process requires a comprehensive application that includes detailed diagrams of the proposed extension, and may take up to eight weeks to process.

Fortunately, Good Design and Build oversee the entire process for our clients. This includes:

  • Surveying the location
  • Submission of architectural plans and structural calculations
  • Coordinating with the local council
  • Securing planning permission

Due to this, homeowners can be sure that every aspect of the extension build complies with building guidelines and is constructed to the highest standards.

Home extensions in Isleworth must ideally be styled to seamlessly integrate with the original architecture, while adding contemporary comfort and luxury through their designs.

Most house extensions in Isleworth feature these home extension styles:

Kitchen extensions

Invariably the most-requested style of home extension, kitchen extensions are wonderful opportunities to combine modernity and elegance to create updated kitchens that are ideally suited to host intimate family dinners or large celebrations.

Garage conversions

Garage conversions are a great way to renew existing space, integrate it into the layout of the house, and create new space and dimension in a home. Their design can be varied as they could be converted into offices, playrooms, bathrooms, or guest rooms. This flexibility makes garage conversions extremely desirable to homeowners.

Loft conversions

A cost-effective solution to convert unused space upstairs into more functional living space, loft conversions are ideal for adding space and value to your home. The versatility of loft conversions allows homeowners to create unique designs perfect for fulfilling space requirements.

Refurbishments

Even without an extension, the existing space within a home can be transformed and upgraded through refurbishments. By designing open-floor plans and optimising the natural light that enters, larger and brighter modern living spaces are created.

The cost of house extensions is dependent on a number of variables including:

  • The type of extension
  • The size of the extension
  • Location
  • Groundwork
  • Building materials
  • Fittings and fixtures
  • Specialists’ fees, etc.

As such, the cost of home extensions in Isleworth can range from £35,000 to £140,000.

Good Design and Build create customised extensions at affordable prices. We take into account client specifications, requirements, and budgets when designing home extensions.

Good Design and Build offer free consultations and provide free quotes for proposed extension projects. That’s not all.

We ensure complete cost transparency throughout the build process and even offer easy payment plans to all our clients.

This ensures that homeowners can create the extensions they want at their specific budgets.

Home extensions are incredible opportunities to add space and value to your home. But they must be done right to ensure a good balance of modernity and understated elegance. More importantly, the extension should be cohesive with the original structure to maintain its integrity.

Good Design and Build takes care of all this and more. We not only design beautiful home extensions that are tailored to meet client requirements, but we also oversee the entire process from planning to completion ensuring a stress-free experience for homeowners.

This includes surveying the location, designing bespoke extensions, obtaining planning permission, daily on-site management of the build, and final handover. With our incredible team of specialists, every step of the process is managed with utmost professionalism and diligence.

This commitment is what enables Good Design and Build to create high-quality extensions that are backed by warranties and guaranteed to exceed all your expectations.

Don't move. Extend in style

We can save you the hassle that comes with moving not to mention the heavy stamp duty! Adding an extra loft bedroom or enlarging the living kitchen dining space on ground floor is an economical way of transforming your home to suit growing needs. The projects can range from £40-100K depending on your requirements and can be completed within 8-16 weeks.

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How we deliver projects

Our process is simple and divided into two distinct phases with separate contracts: Design and Build. As a client you only commit to one phase at a time depending on what stage of the process you are in. Each phase consists of three stages as described below.

1. Design

This is the kick-off point for your project. We carry out a complete architectural measured survey of the property. This allows us to create accurate CAD design drawings. This is followed by a design meeting to start discussing your ideas in more detail.

2. Planning

At this stage we finalise the designs with you and start preparing planning applications as needed. We place a high priority on ensuring that plans, designs and schedules are all based on a thorough and detailed understanding of planning guidelines. We co-ordinate with local authorities until the decision is made, and the planning approval is secured.

3. Technical

Once the planning consent is secured, we translate the design drawings into more detailed technical drawings for the purposes of building control and construction. This also includes specifications and structural calculations. At this stage, we will also submit to you our ‘no obligation’ quote for the build phase.

4. Pre-build

90% of our clients decide to stick with us after the design phase is completed. Once the build contract is signed, we kick off the process by making sure all the pre-build processes are complete. These include assistance with party wall agreements, Thames Water build over agreement, submitting building control application, and preparing method statements etc as needed. This stage ends with a pre-start meeting with your foreman before the actual build begins.

5. Build

One of our foremen will be dedicated to your project and will be on-site to manage everyday works. Our project managers will be overseeing the works to make sure they are completed to high standards, within your budget and on time. Throughout the process we will keep you updated with the progress and coordinate the works with third parties such as kitchen or flooring suppliers. We will also advise and guide you to choose any suppliers if needed.

6. Handover

As the build draws to finish, we will help to iron out any ‘snags’ to make sure everything is completed to your satisfaction. We will put together all necessary certificates such as gas, electricity and building control completion along with warranties for glazing, boiler etc. At the final completion meeting, we will hand you these documents, together with the keys to your house. Needless to say, you can contact us any time after this, if you want us to look at something.

This is the kick-off point for your project. We carry out a complete architectural measured survey of the property. This allows us to create accurate CAD design drawings. This is followed by a design meeting to start discussing your ideas in more detail.

At this stage we finalise the designs with you and start preparing planning applications as needed. We place a high priority on ensuring that plans, designs and schedules are all based on a thorough and detailed understanding of planning guidelines. We co-ordinate with local authorities until the decision is made, and the planning approval is secured.

Once the planning consent is secured, we translate the design drawings into more detailed technical drawings for the purposes of building control and construction. This also includes specifications and structural calculations. At this stage, we will also submit to you our ‘no obligation’ quote for the build phase.

90% of our clients decide to stick with us after the design phase is completed. Once the build contract is signed, we kick off the process by making sure all the pre-build processes are complete. These include assistance with party wall agreements, Thames Water build over agreement, submitting building control application, and preparing method statements etc as needed. This stage ends with a pre-start meeting with your foreman before the actual build begins.

One of our foremen will be dedicated to your project and will be on-site to manage everyday works. Our project managers will be overseeing the works to make sure they are completed to high standards, within your budget and on time. Throughout the process we will keep you updated with the progress and coordinate the works with third parties such as kitchen or flooring suppliers. We will also advise and guide you to choose any suppliers if needed.

As the build draws to finish, we will help to iron out any ‘snags’ to make sure everything is completed to your satisfaction. We will put together all necessary certificates such as gas, electricity and building control completion along with warranties for glazing, boiler etc. At the final completion meeting, we will hand you these documents, together with the keys to your house. Needless to say, you can contact us any time after this, if you want us to look at something.

Featured Projects

Interior View - Sellons Ave Project

Harlesden

Sellons Ave NW10 4HJ

The project included creating a master bedroom in the loft with an adjoining terrace.

Learn more

Fulham

Orbain Road SW6 7JZ

This project was completed in 2023 and the approximate budget was £101,000.

Learn more
Kitchen Extension in East Sheen

Lambeth

Hetherington Road SW4

We completed this stunning project for our client Angus in Lambeth.

Learn more

Teddington

Station Road SW4 7PA

We completed this exciting project for our clients on Station Road, a quaint residential area in the heart of Teddington.

Learn more

Leyton

Windsor Road E10

We completed this kitchen extension on Windsor Road, a charming residential street nestled in the heart of Leyton.

Learn more

What Our Clients Say

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Build a Quote!

Let's get started with building your own bespoke quote for your dream extension. Tell us as much in detail as possible to get most accurate price.

Get Started

Build a Quote!

Let's get started with building your own bespoke quote for your dream extension. Tell us as much in detail as possible to get most accurate price.

Get Started