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Construction Companies in London and the South East

Accredited construction specialists in London and surrounding areas. Get in touch to see how the 4SP Group team can enhance your property.

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107 Trusted Reviews

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About Us

4SP Group have over 35 years of experience and we are considered one of the most proactive construction companies in London, but also work with clients across the UK. We see our clients as partners rather than clients as we are all working to the common goal of efficiently delivering the completion of a project to the highest standard. Our experienced construction specialists have a wealth of knowledge working on projects of all sizes and are always on hand to recommend the best approach for your property. As design and build contractors and building consultants, we are able to manage your project from start to finish to make the process as plain sailing as possible.

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Working with our Construction Specialists

As an established and accredited construction contractor, we offer a wide range of services to facilitate your project, including:

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4 site digger
Case Study

Wandsworth, London – House Refurbishment

We had to underpin the rear of the property, install a basement and fully refurbish this beautiful home.

service icon Underpining
length icon 16 Months
Case Study

Camden, London – Mixed Use

The developer on this project has us work on a basement from a level site and the RC frame for a 6 storey building. Underpinning and waterproofing also made up part of these work

service icon Basement
length icon 22 Months
Case Study

Pittshanger Manor and Café, Ealing

4Site excavated and built the basement, lift shaft and internal structural works for the Museum. We then built the café from foundations to completing the whole envelope with a brick finish. These works were all done for the main contractor.

service icon Basement
length icon 19 Months

Our Trusted Partners

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roster waterproofing
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The projects we work on vary in size, ranging from working with domestic clients to large development corporations but our mission statement remains consistent across all facets and stakeholders.

Our clients are our partners and we are aligned to complete the project as efficiently and cost effectively as possible; this is engrained in our company ethos in all personnel involved with 4SP Group. We take pride in delivering on time, on budget and will communicate with all partners throughout the lifecycle of the project.

The majority of the management team are vastly experienced in development and construction companies London and ensure the team is filled with highly competent and motivated staff. The team are highly experienced in the range of construction services we offer, carrying jobs out with consideration of all aspects of the project including economy, programme, other trades, temporary works and above all, health and safety.


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Accredited Construction Contractors

In recent years, the increase in property prices has resulted in a high demand in building improvements and new build construction companies London. We are well versed in partnering with our developer and commercial clients and understand the critical nature of performing for the various stakeholders in a timely manner. Where property owners have opted to expand their current property rather than relocating, we have helped fulfil their properties’ potential within the unused areas of the property creating a usable and dynamic area to enjoy.

Although our operational areas are typically London and the home counties, we work with clients all over the United Kingdom. Our construction specialists can attend your property to assess the task and carry out high-quality construction services to meet your project requirements.

Expert Solutions by Construction Specialists & Building Consultants

4SP Group has evolved to become a client-focused provider of construction solutions for a wide variety of projects. Our highly skilled team work closely with our clients to ensure that targets are reached at every stage of the project, working to successfully deliver an effective project from start to finish. We are happy to work with you as construction consultants as well as lending our expertise alongside your professional design team if required, enabling to you progress with the most efficient construction companies London from a time and cost perspective.

Our growing popularity as a construction contractor is based on many happy customers, we pride ourselves on leaving clients’ projects having formed healthy relationships and are thrilled to see a steady stream of work stemming from client recommendations and repeat clients. Our clients include architects, specialist developers and private home owners, so you can always count on our construction specialists to provide a service catered to your requirements.

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Contact Construction Companies in London

Finding professional construction companies in London is the first step to kick start your project. If you are ready to enhance your property, our building consultants are always on hand to talk through your requirements and come to the ideal solution for your property. From strengthening your existing foundations to creating new structures and basement construction to produce a high-quality new space, contact us today to work with a professional construction contractor. We are able to manage the whole process for you, with experience in carrying out the design and build function of a project to manage the whole process for you.

We are a well renowned and best construction company in London. We have over three decades of construction experience and cater to residential and commercial sectors. Our in-house team of expert engineers, designers, and architects has worked on countless projects and completed them to the satisfaction of our customers. We provide a host of residential, industrial, and commercial construction services, some of which are:

  • Building Foundations
  • Waterproofing
  • Basement Construction
  • Underpinning
  • Vault Conversion
  • Construction/Building
  • Site Construction

Contact us today for any construction service which you may require. Our team will visit your site and provide you with consultancy and cost estimates for your project. Our residential construction contractors in London provide all kinds of residential construction services you require, including on site construction.

Building Reliable Foundations

Foundation building is the most significant step in any construction project. The superstructure will always be at risk without reliable foundations, whether a residential unit or a commercial building. Identifying the right foundation and taking the right measurements are challenging tasks. Our geotechnical engineers study the site soil with great care to determine the type of foundation most suitable for your construction project. They examine factors like soil quality, moisture content, climatic conditions, presence of trees, etc., for choosing the right foundations. Whether your construction project requires deep or shallow foundations, our construction contractors London will identify the technique and measurements of your foundations. We not only provide foundation work for residential projects, but our commercial contractors London can also build foundations for commercial projects.

Reinforcing Existing Foundations Through Underpinning

We provide underpinning services for foundations that have been damaged or have lost their prime. Simply put, these foundations are no safer and need remedial work. Foundations may require underpinning for several reasons. Natural hazards such as earthquakes may have damaged them. Underpinning may also be necessary if you carry out major modifications, such as adding a storey or multiple storeys. Underpinning can help reinforce foundations and build new ones on construction sites with restricted access. For instance, basements, tunnels, under bridges, etc. We are experts in various underpinning techniques, such as mini piling. We have the latest equipment, including our mini piling rigs. We are one of the most reliable construction companies in London for any underpinning project you may require.

Waterproofing Your Property

One of the greatest challenges any superstructure faces is water’s effect on its structural integrity. Water can seep through cracks and compromise your structure over time. Adequate waterproofing is imperative for ensuring a long-lasting superstructure. We are an accredited waterproofing company. Our partners include Sika, Delta, and several others, providing us with top-quality cavity drain membranes. Our work and supplies are warranted to protect your investment. Whether your roof, walls, water tanks, or basements require waterproofing, you can count on our construction contractors London for reliable waterproofing services.

Basement Construction

Basements are an incredible way of expanding your usable space. Our basement contractors can create a highly functional basement for your properties which you can use for several purposes without increasing the footprint of your property. We will dedicate a highly experienced project manager to your project. We can help you modify/alter your existing basements, build new ones, and even build an under-garden basement. Our specialists are fully aware of building regulations and party wall agreements about the construction of basements, so you do not have to worry about legal or statutory issues. You can use the underground space to create a game room, gym, home office, bedroom, or any room you want, and we will help you fulfil your dream. Our site excavation contractors are known around London for their speciality in constructing basements. Furthermore, we will waterproof your basement to ensure the entire structure is safe.

Building Services/Construction Projects

Whether it is a residential, commercial, or industrial construction project, our skilled builders and contractors can provide you with all the required services, including on-site construction. From civil works to foundation building, building structural frames to complete finishing, we can customise our services to meet all your requirements. Regarding structural frames, we are experts in fabricating RC (reinforced concrete) frames, steel frames, in situ concrete columns and beams, and many more. We offer bespoke and complete building services from planning to executing construction projects. If you want to team up with the best construction contractors, look no further and contact us.

Why Are We the Best?

  • Top residential building contractors London.
  • More than three decades of construction experience.
  • Complete and comprehensive construction services.
  • Accredited and licensed company.
  • Complete in-house construction team.