HOUSE
DESIGN & RENOVATION
IN LONDON

House extension: Double storey

A double storey extension enlarges your building on both floors equally. Thanks to this balance, your house is more attractive to potential buyers. But, of course, it’s not just about future-proofing. You’ll want to enjoy the perks of living in a bigger place for years yet. Rest easy in the knowledge that the value that goes onto your home means the initial outlay will be returned when you come to sell.

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Double storey house extension benefits

Growing families find extra space massively positive:

  • More bedrooms to fit everyone
  • Extra living space downstairs accommodating changing needs
  • Additional bathrooms making a big difference to everyday life
  • Increased value
  • More sellable 
  • Future-proofing
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Key considerations for double storey home extensions

The position of your house compared to neighbours is the main factor when deciding whether this kind of addition to your property is feasible. Detached, semi-detached and end of terraces have the option of a multi-storey side extension. Planning permission is easier the more space there is.

Other aspects to think about when planning your larger house include the potential for increased cost due to unusual surroundings. Sloping ground, trees and peat/clay hike up the price of foundations. Ask your building contractor to explain potential issues. When you’re satisfied that it’s the right option overall, get onto finer details.

Average cost of double storey extension

  • £80,000 upwards

The biggest option when it comes to extending your house is, unsurprisingly, the most expensive. However, the amount of value you add to your property ensures this a sound investment plus a useful addition to ground and first floors.

Figures start from £80,000, but the total double storey extension price will depend on numerous factors that influence the amount you pay. Size, of course, is paramount. Calculations are based on cost per metre of £1,500 – £2,500, which is typical of any house extension.

Take into consideration the general rule that just over half the budget covers construction work; the rest covers the interior. Opt for high-spec, luxury finishes, however, and that balance tips the other way.

Given a lot of the work is underground, preparing footings, it makes sense to utilise that cost by building up as high as you can from foundations. Planning to go up in the future and expanding the ground floor? It’s sensible to achieve both at once. Reduce costs overall and lessen the upheaval by doing it in one fell swoop.

Why use us

Place your trust in Fittra Construction to create your dream home by building on what you have. With 10 years’ experience and NHBC registration, our expert team will be there throughout the process. Benefit from:

  • Considerate Constructors, FMB, NFB, TrustMark accreditations
  • Free consultation/schedule of works
  • Project manager available 24/7
  • 5% deposit
  • Liability insurance: products/public/employer’s
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Interested in new builds?
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WHY WORK WITH US
pay only for work that has been done!
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FREE CONSULTATION
at all stages
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24/7 COMMUNICATION
with project manager
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£10M EMPLOYER’S
liability insurance
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FREE SCHEDULE
of works
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Benefits from our trade discounts
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£5M public & products liability
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5% only deposit payments
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Detailed cost breakdown
Integrated, in-house team will work on your project
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Benefits from our trade discounts
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£5M public & products liability
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5% only deposit payments
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Detailed cost breakdown

In the end you will get

A high-end product delivered on time and on budget!

TESTIMONIALS
SEE WHAT PEOPLE ARE SAYING
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Maidenhead

The work that Fittra did for me was a full house renovation – this did not include any new build or extension work but it did include moving a number of internal load bearing walls and extending external openings to install large sliding doors. The work was reasonably complex structurally as the upper floor is steel beam and concrete block construction. Externally all windows and doors were changed, guttering and fascias were changed and a new tiled deck constructed to give an outside/inside feel. Internally, walls were moved, new door openings created or widened to give a modern open plan look and feel.Read More

Ealing

“Fittra completed a rear extension, loft conversion and full refurbishment of our house in Ealing late last year. This included new bathrooms, heating system (including underfloor heating), electrics and plumbing. When obtaining quotes, Fittra’s prices were in the middle of the three companies who came back to us with costs, but the fact that it was fully itemised (unlike the other costs we received) gave us piece of mind that we knew exactly what we were getting for our money. “Read More

Wandsworth

“Can’t speak highly enough of Fittra and the job they did. They completed a rear extension, side return and loft extension and pretty much a full refurbishment of our house and garden in SW London. They not only did an incredible job, but they were also great to work with too. Vadym and Ivan’s team were incredibly efficient and hardworking and really amenable and collaborative. I have recommended them to a few friends subsequently, and will continue to do so.”

Hanwell, New build

Team at Fittra possesses all the attributes necessary to be an excellent contractor: they know their market extremely well; they are diligent, responsive, and yet very understanding with their clients. They are very professional and offer cost saving alternatives when possible. The thing that has impressed me the most is the professionalism, knowledge and helpfulness of all the workers.

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Isleworth

“We did our house fully renovation last year July 2019 – December 2019 with Fittra. We are very pleased with the results – our new kitchen (rear extension with lantern roof light), loft conversion, hardwood flooring, underfloor heating, tiling and etc.. Ivan and his team are truly professional. They finished the job with timely manner and customer satisfaction. Their breakdown quotes are easy to understand and easy to work with. We are highly recommended for Ivan, Igor and the team. Great job!!!”

OUR PROJECTS
Maidenhead
Maidenhead

This refurbishment project was absolutely thrilling to accomplish, with a solid team of interior designers and a delightful, intelligible client. Although the 1980s house was structurally complex, with heavy concrete planks in the original structure, as opposed to traditional wood, our team managed to support the existing structures and integrate new features to modernise the […]

Richmond renovation
Richmond renovation

This classic 1960s house in the London Borough of Richmond-upon-Thames required modernisation through a complete renovation.We worked closely with the client to create a new contemporary space that gave the residents more space and improved facilities while seamlessly blended in with the local area.

Ealing
Ealing

This project focused on renovating the terraced house by adding a rear extension and converting the loft. Two large skylights were installed to brighten up the living area and a new bedroom with en-suite shower created on the top floor. The extension added space to the side and rear of the property; this allowed for […]

Wandsworth
Wandsworth

The client chose us for this Wandsworth property to complete a house renovation, an L-shape dormer loft conversion as well as a wraparound ground floor extension. Open plan kitchen was created to maximise the living space and modern design gave it a gorgeous look. Our team added new sky lights over the kitchen island to […]

Wandsworth House
Wandsworth House

We provided design, engineering, construction and project management on this exciting renovation in the London Borough of Wandsworth. The project consisted of a two-storey extension, a brand new, bespoke open plan kitchen; new windows throughout, a new bathroom, stairway, complete plumbing and electrical, and enhanced lighting throughout and a rear-facing bay window.

Hanwell, New build
Hanwell, New build

We completed this substantial and ambitious new build in march 2019. With a large rear garden and extensive parking, the home makes perfect use of its natural space. A bespoke kitchen, with direct access to the garden, is one of the home’s standout features, as are the luxury bathrooms. The first floor features three spacious […]

East Sheen
East Sheen

This project includes a spectacular kitchen installation with a new dining and living area, which is as modern as it is welcoming in its design. We paid close attention to the layout to achieve a spacious, crisp and immaculate area. During the heat of lockdown, the client expressed concerns over staying safe from COVID-19, so […]

Isleworth
Isleworth

The client decided on full renovation of this detached bungalow. Our team built a rear extension with lantern roof light and converted the attic into the living space. They also added 2 new bathrooms to the property, installed underfloor heating throughout the house, changed the entire plumbing and rewired all electric systems. During the final […]

Acton
Acton

We recently completed the full refurbishment of this stunning home in Acton, West London. The extensive project included a brand new open plan kitchen with natural light coming from a huge bespokely designed skylight.   The project also included a new loft dormer, a completely new roof, two bathrooms, brand new electrics and a state-of-the-art […]

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