Bespoke Design & Planning

Over 12 Years of Experience

Free Consultation & Itemised Quotes

Full Cost Transparency & Project Management

Insurance Backed Warranty

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The exclusive postcode nestled next to Chelsea is a quiet riverside residential area with plenty of parks and multiple links to central London. Mainly Victorian and Edwardian terrace houses line the streets with a few Georgian houses included in its old builds. It is an area you can put down roots in confidently whether to raise a family or to live a laidback life. House extensions Fulham become invaluable when you need to stay put in one place for longer without facing the hassle of moving. We are a specialist construction company with expertise in Victorian and 1930s home improvements in southwest London. A team of architects, engineers, and qualified builders is responsible for designing and building bespoke spaces, turning necessity into stylish creations.

Side Return – this trusty extension that builds onto the side alleyway of your property allows for an easy kitchen extension without taking up too much of your garden space.

Rear Extension – extends the rear end of the house onto the back garden, running the width from one garden wall to the other.

Wraparound Extension – a Side Return and Rear Extension join to produce a generous amount of space.

Double-storey Extensions – When you want twice as much space or when you want to save garden space, you can add a top storey to your extension. You can build an extra bedroom on the upper floor.

Loft conversion – adding space doesn’t have to be a ground-level affair; you can take it to the roof too. Use your loft space to build upwards.

Basement conversions – the neglected cellar of your house is perfect for converting into extra space. It can be a basic conversion or an excavated one with better height and proportions.

A house extension is a Permitted Development, and in most cases, does not need planning permission. However, there are exceptions, and you need to planning approval when;

  • Your house belongs to a conservation area or is a listed building.
  • The extension covers more than 50% of the land area surrounding the house.
  • Side Extension exceeds 50% of the width of the original house.
  • Single-storey extensions are higher than 4m.
  • Extensions are higher than the highest point of the original roof.
  • There are balconies, raised platforms, or verandas featured in your extensions.
  • The exterior of the extension and materials used are not similar in appearance to the existing house.
  • Single-storey Rear extensions are more than 8m from the original rear wall of a detached house or 6m if the property is semi-detached or terraced.
  • Double-storey extensions extend more than 3m out from the original house and are closer than 7m to the rear boundary.

You also need Party Wall Agreements from neighbours as boundary walls get modified, and new additions can impact neighbours, particularly on terraced and semi-detached properties.

  • Use acoustic panels to offset sound reverberation that results from modern design elements such as glass walls, polished stone, concrete floors, and crisp, clean lines. Fit the panels to the walls as textured profiled panels like wall art or flat panels printed with a chosen image.
  • If you have a large garden, you can opt for an annexe instead of extending the existing house. A garden room extension offers additional space as a self-sufficient accommodation.
  • Instead of matching the extension with your property’s existing architectural style, you can transform your home’s overall appearance to complement the extension. It is possible to undertake a redesigning scheme under Permitted Development rights.

An active 12yr experience in bespoke home extension design and construction has enabled our expert knowledge of area-specific planning permission requirements, building regulations, and a thorough understanding of maximising space and style with extensions. We are more than building contractors. Our design department, led by accomplished architects, is brimming with new ideas. Our high-quality builds are made to last and carry warranties and energy-efficient certificates. We ensure you receive the best for your money and work within the budget. You receive full cost transparency from the start, and a project manager oversees every aspect of the build phase. Our team also handles planning permission and building control applications. A two-part contract for design and build phases gives you the opportunity to opt-out before building commences.

A Side Return Extension costs from £35,000 onwards, and a Rear Extension cost starts around £40,000. A Wraparound Extension can cost £55,000 and upwards, and a Double Storey Extension £75,000 upwards. The conversion of an existing cellar can cost £1,150-£1,450/m². Lowering the floor and underpinning in the existing cellar costs £1,500-2,000/m².Digging new basement space and underpinning costs £2,000-3,000m².

Get a free quote and site survey for your extension in Fulham from Good Design & Build.

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.

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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