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Underpinning Contractors

There are multiple warning signs that indicate your home needs underpinning. Contact our reliable underpinning contractors to discuss your requirements today.

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107 Trusted Reviews

Underpinning is the process of strengthening the foundations of a building, generally by extending the footings downwards. This is an integral and extremely important part of basement conversions.


Our highly skilled team of structural engineers and underpinning contractors have years of experience of basement underpinning. Therefore you can be safe in the knowledge that your 4Site excavation will be completed in line with all necessary and appropriate regulations. We will ensure that your basement conversion is not only safe, but it will withstand the test of time.


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Enhance your property with reliable construction services

Why Choose 4Site Construction?

Upmost Attention to Detail

Upmost Attention to Detail

Practicality, safety, longevity and aesthetics are never overlooked by our professional team.

Full Project Managment

Full Project Managment

Years of experience providing quality solutions to meet our clients’ goals has allowed us to perfect the process.

Independant & Flexible

Independant & Flexible

Working around your schedule, count on our team to carry out their work in the most efficient way for you.

Maintaining Professionlaism

Maintaining Professionlaism

Maintaining our high standards at all times, the team are all extremely experienced within the industry.

Responsible & Unobtrusive

Responsible & Unobtrusive

We keep disruption to your daily life as limited as possible, keep you informed through every step of the process.

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

underpinning building structure

When does my property need to be underpinned?

There are a number of warning signs of subsidence to look out for, which include cracks in floors, ceilings, joints, floors and walls, stuck doors and windows and sloping ceilings, floors and walls. If you notice any of these signs then it indicates that your property needs to be underpinned. You will need to have your property inspected by a structural engineer or a chartered surveyor, which can be done by our team of underpinning contractors at 4Site Construction.


If the survey conducted by our team determines that your property does need underpinning, then this will need to be carried out by our team, as we are specialists in underpinning. If the process is not executed properly, then this could lead to a serious risk to your home and result in further damage or even collapse, which would put you at high risk. Although underpinning a house can be expensive, our underpinning contractors keep prices as affordable as possible at 4Site Construction, so you don’t have to break the bank.


Get in Touch for Expert Advice

The longer you leave the foundations unattended, the more they will worsen, lead to further damages and costs will rise. Therefore, you need to secure your property now, before you compromise the structural integrity of the entire property and the safety of you and the people you live with.


Your property may have already been underpinned previously, which you can find out by speaking to your Chartered Surveyor. The report will have all structural issues highlighted and it will determine if your property needs to be or has been underpinned.


It’s highly important that you seek professional advice, as underpinning a house must be carried our correctly by underpinning contractors, so it doesn’t put you and the property in danger. As we specialise in underpinning, we can answer any questions you may have surrounding this service, so you can be sure that we are the right underpinning contractor team for the job.

underpinning buliding

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Trustworthy underpinning contractors

As we specialise in underpinning, we can answer any questions you may have surrounding this service, so you can be sure that we are the right underpinning contractor team for the job.


Our underpinning contractor team at 4Site Construction has been handpicked and are highly qualified. We only have the best of the best to ensure that every job is completed to the highest standards. What’s more, our team receive regular training sessions to make sure that they stay in line with the latest methods and equipment.


This means that we can streamline the process and make sure that our underpinning a house service leaves your property in a better condition than ever before.


If you would like to find out more about underpinning a house and how our professional underpinning contractor team can help you, don’t hesitate to contact our team, today.

    Get Your Free Quote Today!

    Our expert team are always on hand to offer advice and recommendations for your construction project. Get in touch today for a free no obligation quote or give us a call on 01376 311 133 .