Bespoke Design & Planning

Over 16 Years of Experience

Free Consultation & Itemised Quotes

Full Cost Transparency & Project Management

Insurance Backed Warranty

It is the undisputed capital of the world. From its epic multiculturalism to prestigious private schools to acclaimed universities to the lucrative properties, London stays true to its greatness. For centuries it has drawn people from the far corners of the world with prospects of more ambitious and better lives in the UK. Every square foot of this city is precious to property owners, and even the slightest bit more can make a world of difference. House extensions London and restyle your home to bring more livable space in the most practical remodeling methods. Each house can expand its proportions with available garden space to create unique spaces that not only will cater to your needs better but drive up your home’s value. London’s historic and housing greatly benefits from extensions, especially when you can’t justify the cost of moving houses. It is also your chance to transform your period home with a modern take on comfort, elegance, and multi-functionality.

Home-buyers are always prepared to pay for more usable space, especially if it is better quality construction. Nationwide research shows that an extension or a loft conversion can add up to 23% to your house value. A 10% increase in floor area can add a 5% to the price tag. Kitchen extensions that open up a confined kitchen can add from 5% to 10% in value. Open-plan kitchen and dining area are becoming a necessity, and if your home has that feature, it makes a great selling point. Adding an extra bedroom can boost value by 12%. A double-storey extension can give you enough space for an upstairs bedroom, or you can convert your attic for this purpose. You can also find space for a new bathroom with an extension, and this adds another 6%. A bedroom and a bathroom that makes up a stylish en suite can push a property’s value up by 23%.

A house extension does not only give you extra space but a lot more:

  • It saves you the trouble of property hunting, moving, and having to pack up a settled life.
  • A house extension means more floor space, and more floor space means higher property value.
  • It’s a bespoke process, so you can get artsy and innovative to design a living space that is all about you.
  • A house extension in London can benefit your lifestyle. It allows more room for entertaining guests, family stay-overs, and guest accommodation.
  • The chance to reconfigure the floor plan – a wraparound extension or a rear extension gives you the flexibility to add, remove, merge, or move areas of your home to suit your preference.
  • The design features of the new addition can remarkably improve the appearance of your home.

Undertaking a house extension project is no easy task if you don’t have the right help. There are multiple aspects to consider and many pitfalls to avoid. While the finished product is worth the effort, the process should not be tedious and should not lead to failure. Good Design & Build operates on expertise knowledge, real-world experience, and commitment to delivering above average results. We are concise in our process and takes charge of responsibility from the start.

From securing planning permission to building service certificates, we handle all requirements that complete the project successfully. Our structural engineers, architects, and skilled builders can spot a snag a mile away and offers immediate solutions at every difficulty you might encounter. We take the hassle and stress of planning and building away so that you enjoy not only the outcome but also the process.

All Good Design & Build projects progress in two phases, the first of which is the Design phase. We believe every idyllic creation needs an imaginative idea that can translate into a practical design. To that end, we pay equal attention to our designs as much as we pay attention to the building process. We draw up a separate contract for both stages, so you will need to commit to only one at a time. After a complete architectural survey of your property, we discuss ideas with you to decide on the compatible types of extensions and the design suitable for your requirements.

If planning permission is a requirement, we apply on your behalf. We regularly study guidelines relevant to every area in London. Once we receive approval from planning authorities, our architects prepare a detailed technical drawing of the plans per structural calculations and specifications. Before we transition to the Build phase, we offer you a no-obligation quote. If you are happy to proceed, the signing of the Build contract commences building. A project manager oversees the entire process, and we will assist with Part Wall Agreements, the Thames Build Over Agreement, building control applications, and method statements. We remain accountable throughout and work within your budget to get you the best products and services.

Single-storey rear extension – this is the perfect choice when you want natural light flooding your room and a better outdoor indoor integration. A pitched glass roof will give your rear extension an orangery vibe while maximising light. There will also be enough height for chandeliers, lanterns, and hanging/swinging chairs.

Two-storey or multi-storey extension – this allows more space upwards, saving garden space. It is also cost-effective as you are using the same groundwork and roof to create space in between. You can create a guest bedroom, a home office, a living room, a home gym, or even a playroom for the kids in the upper level, while a kitchen and dining area sits below. Two-storey extensions can also help even out your floor plan.

Wraparound extension – by combining both a side return extension and a rear extension, you are enabling a sizable single-storey extension that can create a bathroom, a utility room, an entertainment room, or a study while also expanding your kitchen proportions.

Get in touch for a free consultation. Design and build the ideal space you have in mind with London’s best home improvement specialists.

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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Types of extensions

Wrap-around Extensions London

Side Return Extensions London

Garden Office Pods London

Rear Extensions London

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