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Its quaint Victorian terraced houses are an inviting sight. Only 15 minutes to Waterloo, Earlsfield has quietly flourished into an attractive southwest London neighbourhood with tranquil streets, high-ranking schools, open green spaces, and a welcoming community. Its traditional high street caters to an almost self-sufficient life. Choosing to settle here is prudent in its own right. And if you have chosen a home that needs more space or living in one that could do with more, you can always turn to house extensions Earlsfield. As specialists in Victorian property remodelling and conversion, we have an astute design sense to masterly bridge the gap between old and new. All our projects begin with professionally drawn architectural plans that represent your ideas and needs and the uniqueness of your home.

Side Return – the side alleyway left out from the original ‘real extension’ of Victorian and Edwardian properties offer the space to expand house proportions with a Side Return. Although mainly used as a kitchen extension, with interior walls knocked through, it can also become a utility room, a diner, reading nook, workspace, or a shower room with oversized skylights.

Rear Extension – when you extend the rear end of your home towards the back garden, the extra space it forms receives the benefit of good natural lighting and fresh air. With garden views, it makes the perfect dining area, and if you can spare some floor space, a guest bedroom that doubles as a sitting room too.

Wraparound – if you want the best of both worlds, opt for a Wraparound Extension that connects a Side Return with a Rear Extension to form an L-shaped space that adds more functionality and elegance.

Double-storey Extension – How do you multiply floor space with the same roof and foundation? Choose a two-storey addition that offers space for upstairs rooms, terraces, and pod installations.

Loft Conversion – when you extend your home, incorporate a loft conversion that can help you save garden space and make use of a high attic. From a double-mansard to a dormer, loft designs allow for double bedrooms, en suites, bathrooms, home offices, playrooms, and more.

A majority of house extensions do not require planning permission as they fall under permitted development rights. You can obtain a Lawful Development Certificate to verify your rights. If your extension does not conform to these guidelines, you will need approval from planning authorities.

  • Extensions (including previous ones) only cover 50% of the area around the original house.
  • The height of the extensions does not exceed at original eaves and the highest part of the original roof.
  • When the new building is within 2m of the boundary, the height at the eaves does not exceed 3m.
  • Materials used for the exterior must be similar in appearance to the materials of the existing house.
  • A single-storey extension does not exceed 4m in height.
  • The eaves and ridge of the extension are lower than the existing ones.
  • The new roof pitch is similar to the existing one.
  • Upper-storey windows of a two-storey extension in the side elevation are obscure-glazed and non-opening. If openable, it should be 1.7m above the floor.
  • The extension is built forward of the principal elevation, or where it fronts a highway, the side elevation.
  • Rear extensions can only extend up to 8m (previously 4m) from the original rear wall of a detached house and 6m (previously 3m) of a semi-detached or terraced property.
  • Single-storey Side Returns are no more than half the width of the original house and no more than 4m in height.
  • A square upper floor extension is sometimes too overbearing for neighbours. A gable end creates a sleeker and less-obstructive roofline for a high-ceiling interior.
  • Offset soft neutral colours with darker lines using dark window/door frames, wall shelves, lampshades, and beams.
  • If the extension space is small, try to give it more height with a pitched roof, floor-to-ceiling glass doors/walls, and overhanging lights.

Our recipe for exemplary architecture that remodels your home is a composition of reinventing space with a contemporary spirit. Our designs respect erstwhile elements of your home, while modernist details create spaces that give you the most with the least. A qualified team of builders guarantees superior quality construction, and our structural engineers are up-to-date with all building control guidelines that legitimise our work. We provide dedicated project managers who ensure quality controls are in place and work progress remains steady and up to the mark. Good Design & Build costs are fully transparent, and our easy payment methods are secure. We offer a two-part contract for your project with a quote at each stage.

A single-storey Side Return costs £35K, a Rear extension starts from £40K, and a Wraparound extension can cost £55K and more. A double-storey extension can start costing from £75K.

Get in touch with Good Design & Build today to turn your house extensions in Earlsfield into spaces that enhance home value and luxurious aesthetics.

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.

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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.

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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.

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Leyton

Windsor Road E10

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

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What Our Clients Say

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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.

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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