Basement Conversions & Basement Construction London Company

Basement Digging | Basement Excavation | New Build Basement Construction | More Basement Construction Services







Space Excavation - Professional Basement Builder & Basement Contractors London


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

At Space Excavation we deal with projects in £150k to £750k 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 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.

Basement Design London

What our Basement Construction Design looks like?

When it comes to basement construction in London, we are a trusted and reliable basement company. When building a basement, we believe in offering all services, from design to basement excavation and building. This streamlined approach ensures that all our basement construction work in London is done on time and on budget.

Our basement contractors in London are equipped and accredited to provide all the services customers need when building a basement. From design to delivery, we work closely with clients to discuss all basement construction requirements.

As a basement company in London with a large portfolio of experience, building a basement that maximises space and adheres to planning permissions is what we do best. From start to finish, our basement builders in London keep customers in the loop, and make building a basement in London a stress free job.

Basement Planning London

Basement Construction Planning in our Basement Excavation Company

Building a basement in London takes a team, from architectural to design to building tradesmen, each of their areas of expertise is critical.

As a basement company in London, working only with basement contractors who are fully accredited, we are able to offer advice and guidance when it comes to planning and building a basement in your London property. Our industry planning expertise has allowed us to devise basement construction plans with multiple London boroughs.

When customers decide to build a basement in London, we despatch our basement contractors to the site, ensuring a detailed discussion regarding surveying, discussion and finalizing any basement construction that has been proposed.

Whatever the purpose for building a basement, we look a design, application, risk assessment and local authority applications, with basement contractors in London overseeing each stage. When it comes to building a basement in London, we are a basement company you can trust, from planning to delivery, with local council consent confirmed, we are basement specialists that you can rely on.


Basement Specialists, Basement Contractors & Basement Company London


Basement Construction


Basement Excavation

Cavendish Project


Basement Construction

Christ Church Project

Christ Church Project

Basement Construction



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.



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:

  • TEMPORARY WORKS: structural monitoring - groundwater control - party wall restraint - façade retention - underpinning - waterproofing - load transfer - scaffolding - drainage - shoring - timber
  • PERMANENT 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: Extensive Demolition - Strip out basement renovation - 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 Basement Builders & Basement Contractors in London

When it comes to basement construction in London, the selection of materials can make all the difference. Building a basement can be categorised into three main types of construction, which are block or masonry walls, precast panels, or poured concrete walls are used in London properties.

Poured Concrete

As building methods go, for basement construction in London the most common used is that of poured concrete. Starting with pouring the footing for the basement foundation, it is a basement construction method that is tried and tested. When set, building a basement then involves the use of forms which are designed to hold the poured concrete wall in place to dry, always critical, as building contractors in London will all tell you. One of the reasons a basement builder would use this is that it creates a stronger wall than some other methods.

Block or masonry walls

For the least expensive basement construction in London, block and masonry walls are recommended. Made from cinder blocks, this is a reliable method used by basement contractors across London, in many buildings. As this method of basement construction is more time-effective than some others, is is also cost effective. Steel rebar is used by used by some basement contractors in London to increase durability and add valuable reinforcement to masonry walls.

Precast panels

With many options for basement construction in London, precast panel wall construction is one that some basement contractors use. Molded at an off-site location, basement contractors then transport the walls to the building location to be placed on footers. When building a basement in London, it’s important to remember that each method or material has pros and cons, as building contractors in London will be happy to advise, as will professional tradesmen from your basement company in London.