Elite Basement Underpinning and Cellar Development Services

Elite Basement Underpinning and Cellar Development Services


We, at London Elite Trades, offer a wide range of services including new basement space excavation, old basement rebuilding, and underpinning services across London and the Greater London area. With our remarkable professional experience of years, we work generously to provide a seamless cellar underpinning and basement rebuilding experience.

Using integrated management, expert teams in a broad range of building services, and innovative layouts, we are capable to provide unparalleled services related to all kinds of basement or cellar underpinning, development, and rebuilding.


If you are interested in the idea of maximizing your existing basement space dramatically, revamping your conventional cellar spaces, and installing new and better underpinning foundations, our unique architectural drawings and building plans service will present you with a wide range of options. You can choose from a versatile collection of basement refurbishment, and underpinning ideas with commendable consultation. Especially if you are resident of London, you can avail our premium quality basement underpinning services swiftly.

At the heart of your basement construction or cellar conversion project we will install the most reliable waterproofing system. The patented Water Guard system is installed just under the floor at the wall floor junction around the perimeter of your basement.

It has holes in the back to accept water and a special flange on the back allowing it to intercept water penetrating at height levels. The Water Guard channels control water movement by diverting it to a Super Sump or another drain, where it can be safely removed from the property without trace to you inside the home.

This service is available throughout the whole of England and Wales.

We try our very best to help you convert your cellar/basement as easily as possible.

  • If you are not 100% committed to the full process of the conversion, but would like to investigate possible solutions further, this service may be for you.
  • If you are a general builder who is contemplating a conversion for a customer or acquaintance and perhaps are not 100% certain of the best process and require some specific technical assistance with the conversion, again this service may be for you.
  • If you are selling your home and find that the prospect of a good conversion enhances the saleability of your home, but do not want to go through the full process, simply to show prospective buyers that, this can easily be achieved this service may be for you.

We are experts in detailing the very best way to do this. So you can be assured that whichever type of conversion project we advise on will be the most suitable for your property.

  • We will visit your home and from that design an aesthetically pleasing and practical conversion to then put these ideas onto a full architectural package, laying out the full technical process to achieve this.
  • We will detail what if any planning applications are necessary (we will apply for Full planning permission on your behalf if necessary).
  • We will include all relevant building regulation requirements to enable a successful building regulation approval (alternatively we can even submit this stage of works for you). Or you can simply take our plans and decide what to do next at your own pace.

This service obviously varies in costs depending on a few details.

  • What type of house you live in?
  • What type of space you would like (1 bedroom + bathroom, an office, a play room or a completely independent suite)
  • The final finishes required within the new room.

Once we have established these details we can supply you with a complete price for the project. Should you decide that you wish us to complete the conversion all of the costs paid so far will be reduced from the complete package costs.

Once you are in possession of the plans and have obtained all necessary approvals we can then help you further by supplying all materials from the first steel beam to the last screw to hold the door on its hinges.

Our experience with different merchants means you will get these materials at the best possible rate, with these materials being the best quality that are around, no waste, no over ordering, no under ordering and having to wait for further materials to arrive.

Briefing: At this stage we will meet with you to understand your requirements and the needs that the space is going to fulfil. At this stage we will obtain and develop your idea’s and vision for the build.

Feasibility: With the brief established, London Elite Trades will undertake investigatory works which will entail excavating trial pits to determine ground conditions and strata. From this we will generate preliminary designs and provide you with a feasibility report. The report provides information on likely outline costs, the processes involved in delivering the project, timeline and initial designs.

Design: Moving on from the feasibility study our in-house design team will prepare the necessary design information for planning submissions; this will involve preliminary structural engineering design, floor risk assessments, outline methodology, design and access statements together with full measured surveys and architectural design.

Planning submission: London Elite Trades will manage the entire process in obtaining planning consent.

Party Wall Awards and Agreements: We will manage the process of appointing a party wall surveyor and ensuring the awards and agreements are made in a timely fashion in order to have as little construction impact
Working drawings: We will further develop the planning status drawings to provide full working drawings for both architectural and structural aspects of the project.

Specification: Work will commence in co-ordination with you to draft detailed specifications of the required finishes and products required.

Construction: We offer a full construction service. This option is available to you as the final stage of our in-house service. Should you wish to use us as at the construction stage we will submit detailed costing. We will tender the construction phase and produce the full tender documentation for tendering purposes.

We advise that before embarking on a basement conversion, there are some important factors to consider, in particular the height of the water table around the house, the existing cellar, basement or foundations, light into the area and ventilation.

We believe if there’s an existing cellar or basement, then you need to ascertain what the foundations are like. With Victorian properties, the foundations often don’t go down far enough, so we may need to underpin them. If your house is attached or a terrace, we will need to underpin not only your home’s foundations, but also your neighbours’ foundations too, as they are shared.

It is possible to create a basement in a property with a solid floor even if there is not one there already, but it is likely to be much more expensive.

If there is not an existing basement or cellar, then the job is more complicated and costly, however it may still be very financially economical! We need to start by propping up the existing ground floor and for this, we may have to dig far deeper into the ground than the existing foundations.


Through a robust planning process, we can establish feasibility and provide you with top-notch basement underpinning and refurbishing services as per your requirements and ideas.

Underpinning is a service that is required in several circumstances. Whether your property’s original foundation is giving way, supporting soil structure has changed or your property requires extra underground room.

We offer two types of underpinning methods; Traditional Underpinning and Piled Underpinning. Building regulation approval is normally required if you want to underpin an existing foundation. A structural design for the underpinning, including details of the construction process, will generally be needed.


In many cases, repairs damage the building’s structural foundation or in other cases the foundation might be improperly constructed, therefore it becomes the need of the hour to avail some quality basement underpinning services. We have got you covered with several professional development and underpinning offers at competitive costs. Therefore, when the topic of basement underpinning costs are concerned, we offer elite class results at an appealing cost.

We work closely with structural engineers, architects, private homeowners, building contractors, insurance companies, and local authorities. Thus our company is prioritized all over the UK by private authorities and local clients for all the cellar development and elite basement walkout underpinning work.

Over the years, we have completed hundreds of projects across the UK as contractors and sub-contractors working with some of the best-known names in the construction industry. We have successfully providing the best reviewed basement underpinning before and after results. For more information on your property’s subterranean needs, contact us today.


Here is a brief overview of our basement underpinning details:

  • Architectural design – planning stage and project
  • Structural design
  • Party Wall Surveying Matters
  • Quantity Surveying – commercial management
  • Construction service – structure and fit-out

Our underpinning method is ideal for basement walkout underpinning, and underpinning basement walls. Before any major basement walkout underpinning work starts, a trial hole will be dug next to the existing foundation for a structural engineer or surveyor to assess exactly what is required. After critical analysis and determining the core underpinning required for the structural foundation, a general method of basement development begins. A typical method is for short sections of underpinning to be separately installed; depending on how much of the fountain needs underpinning, it is sometimes possible to install more than one section at a time.

Before each section of underpinning is concreted, it will normally be inspected by a design engineer and a building control surveyor.

A sand and cement packing will usually be packed between the existing foundation and the underpinning to ensure support and fill in any voids; this will also be inspected by an engineer or a building control surveyor.

We work closely with structural engineers, architects, private homeowners, building contractors, insurance companies, and Local Authorities to ensure the accurate provision of underpinning and basement refurbishment services. The integrated management of our company is always endeavoring to build concrete foundations and unmatched underpinnings for a lifetime experience.


We provide unmatched piling advice and expertise on commercial, domestic, and industrial construction projects throughout the UK. Although a small, independent firm, we have completed hundreds of basement underpinning projects across the UK as contractors and sub-contractors working with some of the best-known names in the construction industry.

Contact us right now to get facilitate with the best-reviewed underpinning work and have your building revamped with a contemporary basement or cellar on easy terms.