Design & Build – House extensions builders for residents in Fulham

APT Renovation – Design & Build experienced builders performing residential extension services in South West London and central London boroughs and surroundings.

At APT Renovation a team of experienced builders, Architectural Designer, party wall planners & structural engineers providing high quality renovation services in side return extensions, double and single storey extensions, kitchen extensions and Victorian house extension in Fulham.

Our all-in-one approach means to create and extend your home into better living space, by coordinating and supervising every aspect of a house or kitchen extension project.

We understand you are looking for house extension which is cost effective way, and planning to increase your usable floor space for better place to live. We will ensure to make the most of your investment, and to effectively plan your house extension, experience and our extensive years of expertise to be applied with detailed construction knowledge combining with fresh design ideas as well as having an understanding of your requirements.

Who we are

APT Renovation – Design & Build offer full-service design and build services tailor-made to your personal needs, and undertake residential renovation and remodelling projects delivered and managed by team of

• Project managers

• Architectural Designer

• Design consultants

• Quantity Surveyors

• Structural Engineers and professional Builders.

We are one of the very few firms who choose not to ask for deposits or upfront payments.

We take care of everything

APT Renovation offer full-service design and build services:

• Architectural Drawings

• Planning applications

• Building Control

• Project cost estimation

• Detailed architectural CAD / 3D designs

• Construction

As well as detailed specification of fine materials and finishes.

House & Kitchen Extensions: Side Return, Double and Single Storey Esher

House Renovation London has completed countless renovations and home improvements in London. Our focus and determination are both solely centred around you, the client. Your satisfaction is what makes us tick, and is the driving force that helps us to create and renovate the most stunning spaces.

With your vision and our expertise, you can be sure that your home renovation will capture your heart.

If you are looking for home improvements or house extension building contractors in Esher, and surrounding areas, then House Renovation London is your premier choice. Not only do we cover full house renovations, kitchen extensions and loft conversions, but we also fit in brand new kitchens and bathrooms. We are also able to take on smaller scale projects such as painting & decorating, tiling or plastering.

We hold the following:

• £10 million Employers Liability insurance

• £5 million Public Liability insurance

• £5 million Product Liability insurance

• £250k contract works insurance

We can take care of all aspects of:

Architectural design and visualisation

Space planning and feasibility studies

Project management

Measured surveys

Our Architects can liaise with Wandsworth Council on our clients’ behalf and advise on such matters as the recent changes to Permitted Development Rights as well as all the mandatory statutory apprEshers.

We can visualise your Home extensions

side return rear house extension architecture

Side Return Extensions

The added space with side return house extensions provides you and your family members more space. Extensions can be modified into rooms of relaxation and entertainment, fitted with integrated sound systems and technology.

rear house extension specialists

Kitchen Extensions

Kitchen extensions have become the most popular types of home improvements in London properties. A new kitchen can add up to 6{305221c2d1237fd880fd4973fa52a459c45934951824f698cdd958bf25640faa} in value to a property and is sometimes the first thing people look for when buying. This is why open-plan kitchen diners are now high in demand and are often adjoined to the rear end of the house.

rear house extension architectural design

Rear Extension (Single, Double Storey)

A rear extension takes full advantage of the outside space and boosts the indoor capacity by integrating the flooring or materials that can be found in the garden. Shifting the extraneous space from the outside to the inside can result in a significant increase in livable room, thus encouraging household members to congregate more in this part of the property.

wrap around house extension architecture

Wrap Around

As swathes of new luxury modern apartments sweep the city, there’s also been a newfound penchant to modernising existing properties with similarly designed house extensions. These glass designs represent the new trend in contemporary architecture and can reinvent living spaces by facilitating large amounts of natural light. Not only does this brighten up the place and make it more inviting, but it also gives the illusion of even more space.

We Extend and Create Exceptional Living Spaces

House and Kitchen Extension Specialists

You, your home and the World, we recognise the importance of a beautiful and spacious home, and the role it plays on our happiness and wellbeing, which is why we work tirelessly to achieve the high end extensions.

Regardless of what style you crave and what your budgetary restrictions are, we will work within these perimeters to exceed your expectations in a timely fashion. We are able to undertake your home or kitchen extension project from start to finish, as we employ a full-time staff of skilled tradesmen including builders, carpenters, joiners, plumbers, tilers, electricians and decorators. They are supported by our dedicated team of customer service co-ordinators, project managers and surveyors.

Our flexibility means that we can also collaborate with any separate Architects and interior designers that you may want to use. We as a building contractor and our main focus on a professional service, supplying a comprehensive solution to our clients varying needs. We still remain a privately owned company that has retained the core values of providing excellent service and quality to customers at a competitive price. Needless to say we are fully covered by Public Liability and Employer’s Liability Insurance.

Recent Projects

Why Should You Choose Us

Our Clients are Everything to Us

Our commitment to deliver extraordinary service to our clients. We work closely with our clients to ensure all their needs are met.

“Job was carried out within days of my call and he made a conscious effort in ensuring that the place was cleaned up properly and that we were happy with the work that was done. We have no hesitation in recommending them again in the future!”

Jenny, SW6

“Outstanding service a very high standard of workmanship. Would use again. They took a lot of pride in what they do not like some of these bigger Company in SW London. They use very good material as well. The extension project run really smoothly.”

Peter, NW11

“Builders and Project Manager arrived on site, on time, very friendly and looked at the problem advised me that they could sort the issues easily. I was surprised and delighted. Invaluable consultation!!!”

Hannah, SW12

“Very happy with contractor. The installer, Lec was prompt, professional, and did a fantastic extension with bathroom renovation. Never worried about leaving him at my home alone. Overall I am very pleased with the installation and finished product.”

Julain, W6

How Much Does a House Extension Cost?

Most of the clients ask us this question a lot: what is ballpark figure for a rear house extension?

It is not straight forward because each individual project will be completely different and will depend on a number of factors. If we closely look into multiple factors such as the materials needed, the clients’ vision, the budget and the timeframe before we can give a clear quotation. With that being said, we can give a rough estimate during the site visit meeting. From our previous experience in rear and side extensions, we can give some understanding of what you might expect:


from £1100 – £1,400 PER SQ M2 APPROX.

This figure is a rough idea at what a rear house extension in the Wandsworth area will cost. The range is a correlation between the different level in the finish. There is always the possibility of other costs being incurred when looking at in greater depth.

Lets say you are extending 4M X 5M

So, for your 4 x 5m extension, the build cost at the lowest end of these estimates would be roughly £23,000

+ Add on 10-15{305221c2d1237fd880fd4973fa52a459c45934951824f698cdd958bf25640faa} professional fees (architect, planning application, building regs, structural engineer)


Single storey extension = £30,000


It will incur extra costs add 50{305221c2d1237fd880fd4973fa52a459c45934951824f698cdd958bf25640faa} extra to the build cost of a single storey extension.

So, £23,000 +50{305221c2d1237fd880fd4973fa52a459c45934951824f698cdd958bf25640faa} = £34,500

+ Add on 10-15{305221c2d1237fd880fd4973fa52a459c45934951824f698cdd958bf25640faa} for professional fees (architect, planning application, building regs, structural engineer)


Double Storey Extension = £48,000

The above rough estimate will only can be applied to simple extension.


+ Add say, £5,000 for a bathroom. Costs may be more or (if you are very thrifty) slightly less depending on your sanitary ware and finishes.

+ Add £10,000 for a kitchen (again, completely depends on your specification, £10,000 should get you a lower-mid range kitchen with appliances)


Above costs assume modest finishes, fittings, electrics and lighting. Think simple painted walls, carpet floors or possibly engineered oak.

+ If you’re wanting higher-end finishes e.g. tile finishes, fitted joinery etc the costs will increase.

+ Glazing will increase the cost also. Sliding or folding doors are a popular addition to extensions at the moment. You can read our article here for reviews and costs of the best sliding door companies.


We will need to include additional costs in your quotation if any of the following apply:

+ Your soil type and ground conditions may present more costly construction methods / techniques.

+ Limited access to the site. Will it be easy for our builders to bring in tools and machinery easily?

+ Existing structure. Are you removing any structural walls? If so there will likely be additional costs for steelwork.

+ Are you moving any pipework, drainage, gas meters?


+ As already mentioned above, in the South East you can expect to pay more than the rest of the UK, and notably more in London.


+ Consider the type/ quality of construction materials involved and the type of construction.

We predominantly work in Central and South West London, but occasionally undertake projects further afield – please ask!

Please get in touch to discuss your requirements, by phone during office hours, or via email (address below) or our contact form.


Monday – Friday 08:00 – 17:00



Office – 0203 865 7983

Mobile – 07463677776

Contact House Renovation London

    When to Contact Building Control Authorities?

    House Renovation London is a refurbishment company, which provides building and home renovation services that would not require a planning permission or a building regulation apprEsher from your local Council.

    It is your obligation to apply for all relevant apprEshers if you intend to make major alterations to your property.