At SDA Site Investigation LTD, we specialise in providing professional drilling, borehole, and ground investigation services to both commercial and domestic clients. Based in Kent and operating across London, Surrey, Sussex, the South East and beyond, we’ve built a reputation for reliability, accuracy, and safety.
With over 43 years of industry experience, our team works closely with architects, developers, contractors, and homeowners to deliver clear, practical results. From the earliest stages of planning right through to completion, we are here to ensure that your project is built on solid foundations.
We started SDA Site Investigation LTD with one simple goal: to provide a trustworthy, safety-conscious, and professional service for site and ground investigations. Over the years, we’ve grown to become a trusted partner for both large commercial projects and smaller domestic works.
Our success comes from combining specialist knowledge, quality equipment, and a proactive approach. By investing in training, safety, and the latest techniques, we continue to deliver the high standards our clients expect.
We know that site investigation and drilling can be complex, but we make the process straightforward. Our team takes pride in being approachable, reliable, and deadline focused, ensuring you have confidence at every stage.
Our services cover everything from soil testing and in-situ investigations to water boreholes, geothermal drilling, and groundworks. Whether you’re a developer preparing for a large commercial build or a homeowner needing reliable site testing, we tailor our services to your needs.
We don’t just carry out the work — we provide clear reports, honest advice, and professional support, helping you make informed decisions about your project.
At SDA Site Investigation LTD, we put safety, professionalism, and client satisfaction at the core of everything we do. By combining technical expertise with a hands-on approach, we deliver results that meet the highest standards — every time.
Your project is in safe, professional hands with us.
Ready to discuss your project? Our friendly team is here to help. We’ll provide expert advice, clear solutions, and a free, no-obligation quote tailored to your needs.