Side return extensions London

Bloom Builders are London’s specialist side return extension builders. We offer complete design and build packages, the full build or shell only to our London clients.

As part of our side return service, we cover:

  • Structural work

    • Temporary works & propping,

    • Steel work

    • Foundations and masonry walls

    • Organising skip, and hoarding licences

    • Rubbish removal

    • All labour and materials.

  • Fit out

    • Stud walls and partitions

    • Plastering

    • Electrics and heating

    • Kitchen installation first and second fixing

    • Painting and decorating

    • Joinery.

  • Legal

    • Party wall awards & neighbours

    • Licence to alter and freeholder consents

    • Health and safety

    • CDM

For an instant quote on your side return extension project, use our instant quote tool

All our projects come with

  • Fixed Price Contracts

  • Full Project Management

  • Design & Build expertise

Contact us

Side return extensions

In order to build a side return extension, you temporarily prop the existing outrigger, install new permanent steels to hold up the existing house, dig foundations and build new masonry walls and form a roof over the new side return extension. Once the structure is complete, works can begin on the fit out which usually involve a new slab with underfloor heating, rewiring and plumbing, fitting teh new kitchen and installing sliding doors to the garden.

Please see our side return extensions FAQs below:

Side return extensions FAQs

  • Yes and No. Rear extension are usually under permitted development as long as you adhere to the guidelines, but wrap around extension will require planning permission. Our partner firm Malone + Pike Architects can help you through the planning process.

  • Depending on the size and the overall scope of works we usually can turnaround standard extensions within four to six months.

  • Yes, a structural engineer is required to design the structural elements for your new extension and their calculations are requested by Building ControlDescription text goes here

  • Depending on your neighbourly relations you might only need a written agreement between all parties. Most of the time though you will need to appoint a Party Wall Surveyor to act on your behalf. Candice Courtney our affiliated Party Wall Surveyor is happy to help you with this.

  • Depending on planning restrictions we usually advice to aim for a flatroof as it opens up the space even more and allows for more daylight.

  • Yes, underfloor heating acts a space saver, frees up wall space and provides an equal heat output.

  • Yes, most of our projects include a small guest toilet fitted underneath the stairs or between the kitchen and living rooms.

  • We are not kitchen designers but work very closely together with local kitchen designers who we can introduce to you.

  • Yes, it is beneficial for both parties to use the existing wall. Usually you will pay a 50% of the current cost of the wall to your neighbour for using their structure but you will save in not building a wall of your own.

  • Yes, depending on the distance from the hob to the external wall a downdraft or Bora extractor hob can be fitted without issues.

  • This is very much down to your own choice and design preferences, there are pros and cons to both. Sliding doors are space savers as they slide on top of each other and don’t swing out but do not fully open up the back of the house. Bi-Fold Doors tend do achieve that “open back” look when they are open but when they are closed have more framing. Sliding doors are definately more fashionable today.

  • We charge a mobilisation deposit to book in the works and arrange the first weeks on site. Once the project has started we will raise fortnightly valuations based on progress on site. This way you will always be sure that your budget is monitored and you will never pay too much. The payments are split between us and our contractors.

  • Landscaping is a very important part of a ground floor extension so we are pleased to offer hard landscaping, e.g. building plant beds, fencing, patios, etc. This will leave you with chosing your favourite new plants and flowers!

  • For a fitted out finish you should expect to pay between £3,000 - £4,000 per sqm.

Get in touch.

To get in touch, please fill in the form on the right or email us. Alternatively you can call 0207 585 2020 or call and whatsapp 07765 948 069. We’ll get back to you as soon as we can.