The 5 best basement waterproofing pros in London that homeowners trust
Rain is almost a permanent fixture in London’s forecast—and with it comes the risk of damp, leaks, and basement flooding. What might seem like a minor issue can quietly grow into serious damage, threatening both your home’s structure and your peace of mind.
Across the city, countless homeowners face this same challenge. Luckily, London is home to specialists who know how to tackle it, from sealing small cracks to fully waterproofing entire cellars.
Here, we’ve rounded up the most trusted basement waterproofing companies in London—known for their skill, dependability, and proven results.
Ready to protect your space from the ground up? Let’s take a closer look at the experts who can keep your basement dry and worry-free.
What is the average cost of basement waterproofing in London?
The average cost of basement waterproofing in London typically ranges from £80 to £250 per square meter, with simple damp-proofing treatments starting around £1,500, while full waterproofing systems like tanking or cavity drainage can exceed £15,000 for larger basements. Factors such as property type, size, accessibility, and required repairs can significantly influence the final price.
1. London Waterproofing Solutions
Address: 39 Marlin Square, Abbots Langley
Contact: +44 20 7458 4655
Mail: [email protected]
Business hours:
- Monday to Thursday, 8AM – 5PM
- Friday, 8AM – 6PM
With more than 80 years in the trade, this PCA-accredited specialist has become a familiar name in London’s basement waterproofing scene. Their services range from full basement tanking to modern damp-proofing systems, all carried out with a focus on long-term reliability.
They’re known for using CSSW-qualified surveyors and following BS 8102:2022 standards, which reassures many homeowners who want solutions that last.
Clients often mention how the team strikes a good balance between technical precision and a personal, down-to-earth approach. That likely comes from their family-run roots. Their 10-year insurance-backed guarantee is another highlight, offering extra peace of mind.
While pricing is not the lowest around, many say it feels fair given the quality of workmanship and clear communication throughout the project. This company tends to attract those who value thoroughness and steady, reliable service over quick fixes or flashy marketing.
Friendly and thorough
“Peter came around quickly and managed to get a team in place swiftly. They were incredibly friendly, thorough and reassuring. I’d recommend them in a heartbeat. We received many quote but they were by far the best value. Thank you for your efforts!”
- Pooja Patel, Google Review
Skilled and polite
“We have been most impressed by LWS from our initial call to the office, when we were met with a very friendly response, the subsequent inspection by Mark, a knowledgeable surveyor, to the work being carried out efficiently and smoothly by 4 very able and polite technicians, who were evidently skilled at their jobs, worked hard and left the place tidy each day. There followed a thorough inspection and sign-off by Salvo, and finally the very helpful office staff furnished us with all the necessary guarantees and a manual. We cannot praise them highly enough for both their professionalism and also their reassurance that the problem was solved.”
- Patsy Newey, Google Review
2. City Waterproofing Ltd
Address: 1, Orchard House, County Grove
Contact: +44 20 3633 2539
Mail: [email protected]
Business hours: Monday to Saturday, 8AM – 5PM
City Waterproofing Ltd may not be the biggest name around, but it has carved out a strong reputation in South-East London. This small, tight-knit team focuses exclusively on basement waterproofing, and their work consistently draws praise for its precision and lasting results.
Their perfect review scores reflect more than just friendly service—many clients describe them as meticulous, with a knack for explaining complex issues in plain terms. One of the standout points is their honest, no-pressure approach.
They don’t oversell or push unnecessary extras, which has earned them a loyal following. That said, their availability can be limited since the team is quite small, and larger projects may require some patience.
Still, there is something refreshing about their straightforward style and focus. For many homeowners, that combination of skill, integrity, and local focus is exactly what matters.
Incredibly professional
“ I cannot recommend this damp proofing company highly enough. Their professionalism, expertise, and outstanding customer service make them a top choice for anyone in need of damp proofing services. If you’re looking for a reliable and trustworthy company, look no further!”
- Striped 1435, Google Review
Good communication
“Armond and his team were super professional and friendly. The quote they provided was upfront and reasonable and the communication from Armond was fantastic. The work was completed quickly and to a great standard and our home was left clean and tidy when we returned with minimal disruption.”
- Sophie Farrier-Armson, Google Review
3. Home Building & Surveying Company
Address: Churchill Court, 33 Palmerston Rd, Boscombe, Bournemouth
Contact: +44 333 006 4138
Mail: [email protected]
Business hours: Monday to Sunday, 24hours
Home Building & Surveying Company has built a strong following across London, with clients frequently pointing to their thorough inspections and straight-talking advice.
Their damp surveys and waterproofing services come with few surprises. What they quote is usually what you pay, and their recommendations tend to focus on long-term fixes instead of short-term patch jobs.
Several reviews highlight how their team does not rush through projects, taking the time to explain potential issues and walking clients through repair options without pushing for upsells. Their high rating seems well-earned, though not every experience is flawless.
Some mention occasional delays in scheduling or response times, particularly during high-demand seasons, but most are quick to add the wait is usually worth it for the level of care they provide.
This is the kind of company that appeals to people who prefer careful, methodical work over speed.
Polite and professional
“I have been very happy with Home Building and Surveying Company. They followed up very quickly after my enquiry, with a survey and then scheduling the remedial work after I accepted their quote. Jack and Harvey, who came to do the work, were polite and professional. They respected my house and were quick and tidy workers. Every part of the process was carefully explained to me and I was shown their work regularly, as they progressed with this job. After completion, they thoroughly tidied up. Inside and outside of my property. I can recommend them and Home Building and Surveying Company.”
- Terry Enga, Google Review
Helpful
“Great experience with Home Building and Surveying Company from start to finish. They were so helpful and always replied quickly to any queries/questions I had. The engineers who carried out the work were fantastic! They were so efficient and informative. They work They did was tidy and professional.”
- Becca Jones, Google Review
4. Sherifi Group Ltd
Address: 45 Chase Ct Gardens, Enfield
Contact: +44 20 8970 7471
Mail: [email protected]
Business hours:
- Monday to Friday, 8AM – 6PM
- Saturday, 10AM – 3PM
Sherifi Group Ltd has quietly built an impressive reputation in London’s damp-proofing and basement waterproofing scene.
They have become known for their steady, consistent work and respectful attitude toward clients and properties alike.
Many customers appreciate how their team handles tricky situations without creating unnecessary drama or disruption, which makes them a go-to for those who value a low-stress process.
Their work often comes across as precise and neatly executed, with several homeowners mentioning how clean the site is left afterward. While their quotes are generally competitive, a few note that the final bill can climb if unexpected complications arise during the job.
However, most agree that their honest, upfront communication helps manage those surprises.
There’s something to be said for a company that simply gets on with the work, keeps things tidy, and leaves clients feeling reassured.
Brilliant service
“Went above and beyond to accommodate us. We are in the process of buying a flat, damp was identified on the survey, and we needed a full damp inspection and report with very tight timelines. Brilliant service with a full report generated in no time. The report was instrumental in helping us ensure that the damp issues were addressed as part of our purchase. Would highly recommend.”
- Anthony, Google Review
Excellent communication
“Blerim and his team are incredible! They did an amazing job fixing a serious damp problem in our flat. Even though we weren’t present while the work was being carried out, Blerim kept us fully informed with regular video updates at every step of the process. His professionalism, skills, and excellent communication gave us real peace of mind. I would highly recommend him to anyone in need of reliable and high-quality work.”
- Hayley O’Keeffe, Google Review
5. Damp Pro & Co
Address: 8 Manor Rd, Ruislip
Contact: +44 800 593 0300
Mail: [email protected]
Business hours: Monday to Sunday, 24hours
Based in Ruislip, this company has become a trusted name for basement damp issues in West London.
Their teams are often described as hardworking and polite, with a noticeable focus on keeping spaces clean during the process. Many clients appreciate how clearly they explain each step, which helps take some of the stress out of dealing with damp problems.
What stands out most is their hands-on approach. The teams are regularly on-site and actively involved, rather than outsourcing key parts of the job.
A few customers mention that timelines can stretch if unexpected issues arise, though most agree the team stays transparent about costs and delays. Their reputation seems built less on flashy promises and more on steady, reliable work paired with good communication.
It’s a no-nonsense service that appeals to homeowners looking for results without extra fuss.
Reliable and trustworthy
“I recently had the pleasure of working with Damp Pro & Co, and I couldn’t be happier with the experience. Seth and his team did an outstanding job — they completed the work within the agreed timeframe and offered a very competitive price. The 20-year guarantee on their work gives me real peace of mind. Throughout the process, the team was extremely professional, respectful, and kept the property clean and tidy as they progressed. Their attention to detail and commitment to quality was clear in every step. I’m truly impressed with the results and would highly recommend Damp Pro & Co to anyone looking to get their damp issues sorted. A reliable and trustworthy team!”
- Avnish Gupta, Google Review
Tidy
“Jesse and the team at DampPro&Co were excellent. They inspected and diagnosed a damp issue in my dining room in an old house. They came out, treated and repaired the problem, leaving the room tidy and clean. Highly recommend their services. Professional throughout.”
- Mich, Google Review