Basement Specialists London – Construction and Conversion Company

We specialize in all aspects of basement work, from extending and converting existing cellars to completely new basement excavations.

Basement Specialists  Live Projects (London Basement)  Contact Form (London Basement)

At Space Excavation we deal with projects in £250k to £600k range. We believe quality is realised through good design, organisation, efficiency and commitment right through to the end. We have built a reputation for integrity as well as quality and we will always make time to explain the detail to help you understand what you are investing in.

Space Excavation can either offer a fully bespoke or fixed price options according to our
client’s preferences.
Space Excavation popular, fully interior designed, fixed price basement conversion packages were created in response to a growing number of clients wanting to have the complete picture of cost upfront – even down to the interior fitting and finishing of their London basement conversions.

Space Excavation – digging, piling and underpinning contractor offers:

  • basement construction,
  • clever design solutions,
  • basement conversions,
  • shell & superstructure,
  • basement digging,
  • underpinning,
  • piling.

London basement after renovation

Multitasking basement builders London

Complex construction process includes designing, excavation and proposing the best solution just to obtain a high quality final product. Our highly experienced and qualified team of basement specialists will do their best to meet customer expectations.


As a London based company we deeply know problem with lack of space and we want to help you manage the space as effectively as possible. Our goal is to provide high quality and durability of basement services in affordable prices. When we are digging basement or performing other work, we take care of the security of our employees and the neighborhood.

We offer professional basement building and conversion services in London and surrounding areas to give you more space. Thanks to creativity and experience our basement design and planning process takes into account customers expectations, effective space management as well as aesthetical appearance of the basement. When we are making basement conversion or construction we are using only high quality materials to ensure durability and high standards.

Reliable London piling and underpinning contractor

Stairs to basement Clever basement solutions in our portfolio

Our company takes pride in very individual approach to client and his expectations. That’s why our project director and specialists working at basement construction are working closely with client and determining details with him at each stage of the work. As a full service basement contractors we work for private and commercial clients.

Piling and underpinning contractors

Our experienced crew working for years as a basement builders in London can do other works for you, such as piling and underpinning. You can be sure they will perform work efficiently and professionally.

Are you interested in our offer or more information about basement conversions, excavation and digging? Fill a short form or call us for free quotation!

Free consultation

Initially we will arrange to meet with you and discuss your potential future basement design. These meetings will be with the Basement director. From day one you will be talking directly with the people that you will be dealing with on a daily basis. They will be the one who will be responsible of overseeing your project. We will discuss all options with you and we will choose the best solution. Retro-fit basement “Space Excavation” can build depth basement to provide extra living space for a multitude of uses. “Space Excavation” will send engineers to plan the design, make it cost effective with the structural team, and deliver the basement on time and in budget. Our approach to each project is to help the design team create a ‘buildable project’ with valued engineers’ solutions, which save valuable time and space. Our extensive experience in basement digging ensures that we can provide the most cost effective solution for your project.

Temporary works:scafolding outside basement during renovation

  • structural monitoring,
  • groundwater control,
  • party wall restraint,
  • façade retention,
  • underpinning,
  • waterproofing,
  • load transfer,
  • scaffolding,
  • drainage,
  • shoring,
  • timber.

Basement after renovationPermanent design:

  • full basement shell design,
  • structural steel and fabrication,
  • permanent steel decking,
  • reinforced concrete,
  • masonry.

Construction Work:Digging with small excavator

  • concrete form works – slabs and walls,
  • excavation and disposal of excavated material,
  • site investigation & preparation,
  • demolition,
  • scaffolding,
  • propping,
  • jacking,

Basement shell & superstructure

Our popular shell and superstructure package enables developers, architects and clients to get their projects up and running whilst still finalizing the internal basement design and specialist finishes. This helps save time and money by getting the project up and running. Within these projects, Space Excavation undertakes the following works:

  • Extensive Demolition and Stripoutbasement renovation
  • Temporary Works
  • Superstructure and Internal Steel Works
  • External and Internal Brickwork and Masonry
  • First Fix Flooring
  • Roofing Construction and Finishes
  • Ground and Foul Water Drainage
  • Hard Landscaping
  • Window Joinery

Space Excavation will advise the basement design team where they feel the cut off point should be in these works and will accommodate the early mobilization of the fit out contractor if required, to help the project program, saving time and money.

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