Bespoke Design & Planning

Over 12 Years of Experience

Free Consultation & Itemised Quotes

Full Cost Transparency & Project Management

Insurance Backed Warranty

Price Match for
Like-For-Likes Quotes

The green, serene, and scenic Richmond is easily one of our favourite southwest London towns. With the Thames curving around it, there are parks, gardens, open spaces, and conservation areas that add beautiful luxury to this place. The Georgian terraces of the town are still some of the most iconic homes in London. Residential life here is as attractive as it gets, and house extensions Richmond finds new ways to make life comfortable. Whether it is a kitchen with an island or an extra bathroom that you need, we believe life at home should never feel inadequate. When you decide to extend your house footprint, it presents you with the invaluable option of incorporating designs that refresh your property’s architecture. We do this with our expert-drawn 100% bespoke designs that are exciting and innovative.

House extensions can be either single-storey or double-storey. While single-story extensions are more popular due to their simplicity, double-story extensions add twice the space using the same groundworks and roof making them relatively cost-effective.

Side Return Extension – the narrow garden alleyway on the side is a feature of the terraced and semi-detached period homes of London. It is often underused and provides for transformation without using up too much of the usable garden space.

Double Storey Side Extension – increase living space two-fold with an extra level up. Double-storey side extensions allow you to make the maximum use of the side garden passage without the need for extending onto the rear garden.

Rear Extension – it is one of the most favoured single-storey extension types in the UK. It has a stronger connection with the outdoors. The extension can stretch the full width of the property and has better access to natural light.

Double Storey Rear Extension – this allows you to design spacious and bright rooms upstairs and downstairs. While the lower level can be a socialising-friendly kitchen/dining space, the upstairs offers options for a bedroom, sitting room, entertainment room, or even a small studio for work.

Wraparound Extension – by combining a Side Return and a Rear Extension, an L-shaped Wraparound is produced. It can be both single-storied or two-storied. With this type of extension, your choices to add extra space are more flexible.

A single-storey Side Return is considered a permitted development (PD), which means you do not need planning permission. If your house is in a conservation area or listed, your PD rights may no longer apply. Guidelines also require for the;

  • The extension to be no higher than 4m
  • It covers only half the width of the existing house and half the land area around the house
  • If there are no balconies, verandas, or raised platforms

To avoid violating any building regulations, you need to consult a professional architectural designer. Before we begin our Build phase, we prepare detailed technical drawings with precision structural calculations. You also need Party Wall Agreements to ensure there is no objection from neighbours when making structural changes to boundary walls. We assist you in this regard by working with party wall surveyors, as well as undertaking the planning application process.

Our sophisticated designs developed by Britain’s top architects are fully bespoke and creative. We specialise in remodelling Victorian and 1930s London homes to bring contemporary style additional space. Good Design & Build team simplifies the planning permission process and other legal requirements by undertaking all paperwork related to the project. We also appoint a project manager for the whole length of the building process to oversee quality control. Our transparency policy means you get a clear picture of the full cost from the start. Our finished products come with insurance-backed warranties and accountability. You also receive easy payment plans from us to pay for your new extension.

Building costs vary depending on the size of the extension, the design, and the materials used. Generally, a double-storey extension costs more than a single-storey extension. A Side Return Extension costs from £35,000, and a Rear Extension starts around £40,000. A Wraparound Extension can cost £55,000 and upwards, and a Double Storey Extension £75,000 upwards.

Get the free initial consultation by Good Design & Build to decide the best extension for your home that can be much more than extra space.

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.

Build a Quote

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

Close

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