The Pre-Build Survey Specialist in New Malden
Essential drainage diagnostics and mapping for New Malden extensions and new builds. Secure your Thames Water build-over agreement with New Malden’s technical experts.
- ◉ Building Control Compliant
- ◉ Precision Depth & Invert Level Data
- ◉ Fast-Track Reports for New Malden Developers
100% Approval
Our reports are designed to meet all New Malden local Council planning criteria.
3-Metre Rule
Expert identification of any public sewers within the critical New Malden build zone.
£5M Insurance
Fully insured for all pre-construction and site works within the New Malden area.
Technical Foundations for New Malden Construction.
In a town with as much development as New Malden, from modern urban expansions to sensitive suburban renovations, a Pre-Build Survey is the most critical step in your project’s lifecycle. Building over or near a sewer without professional documentation is a legal and structural risk. Our surveys provide the precise underground intelligence required to protect New Malden’s infrastructure and your investment. We identify the exact location, depth, and condition of pipes, ensuring your foundations are designed correctly and your New Malden planning application proceeds without a hitch.
Specialized Pre-purchase Drain Survey for New Malden Buyers
We offer a suite of specialized investigations that fulfill the rigorous technical requirements of New Malden structural engineers and water authorities.

Build-Over CCTV Inspection
The "Before" report required by Thames Water for New Malden properties, documenting the structural integrity of the sewer before any groundworks begin.
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Depth & Invert Level Verification
We provide the exact measurements New Malden architects need to calculate foundation depths and avoid crushing local drainage lines.
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Public Sewer Identification
Determining exactly which pipes are your responsibility and which are New Malden’s public assets—a critical distinction for legal build-over agreements.
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Load-Bearing Site Mapping
Mapping the drainage network to ensure New Malden new-build loads are distributed safely, preventing future pipe collapses or subsidence.
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Pre-Construction Structural Audit
A full condition assessment of New Malden pipes to identify existing cracks or leaks that must be resolved before construction equipment arrives on-site.
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The "No-Dig" Solution for New Malden Developers
Our solution focuses on deliveringthe hhighest-resolutiondata with zero site disruption. We ensure your New Malden construction project meets all Part H Building Regulations through non-invasive, high-speed diagnostics.
- ◉ Precision Sonde tracing to identify pipe direction on New Malden sites.
- ◉ Detailed WinCan reports accepted by New Malden's legal and water authorities.
- ◉ Technical advice on pipe protection and diversion for New Malden builds.
Non-Invasive Site Intelligence
Our Pre-Build Survey is entirely trenchless, using advanced camera technology to explore your New Malden site without disturbing the ground.
New Malden Site Prep
We identify all access points and map the build-zone relative to existing New Malden sewer assets.
Our engineer arrives at your New Malden address equipped with the latest CCTV technology.
HD CCTV Exploration
High-resolution cameras are inserted to document every joint, crack, and connection in the New Malden network.
Data Package Delivery
You receive a professional report containing HD video, site maps, and depth data for your New Malden build-over application.
What Our Customers Say
Daniel K., New Malden Architect
"Highly Efficient. We needed a Pre-Build Survey for a New Malden town-center project. They coordinated with the agent and delivered the Thames Water-ready report in 24 hours."
Megan R., New Malden Homeowner
"Peace of Mind. Our New Malden builder insisted on a survey before our extension. The team found a collapsed pipe we didn't know about, saving us thousands in potential damage."
Simon V., New Malden Project Manager
"Professional Data. Their mapping was millimeter-perfect. Essential for any developer working in the New Malden area who wants to avoid planning delays."
Why Choose Us?
We are New Malden’s leading pre-construction drainage authority. Our team provides the specialized technical data that New Malden’s professional building sector demands for every project.
New Malden Infrastructure Knowledge
Our engineers have years of experience working with New Malden’s unique drainage topography, ensuring we find assets that generic firms miss.
Advanced Diagnostic Equipment
We use the latest HD crawler cameras and sonar locators to ensure your Pre-Build Survey is the most accurate in the New Malden area.
Solicitor & Authority Approved
Our reports are specifically formatted to be accepted by New Malden local Council and Thames Water, streamlining your build-over agreement.
Fixed New Malden Pricing
We provide transparent, upfront quotes for all New Malden projects, ensuring you can budget for your survey without hidden "emergency" fees.
Rapid Site Turnaround
We know New Malden construction schedules are tight. We offer priority booking for pre-build projects to keep your development on track.
End-to-End Compliance
From initial tracing to final "post-build" verification, we handle the entire compliance process for New Malden developers and homeowners.
Secure Your New Malden Build-Over Approval.
Get the professional drainage data your New Malden project needs. Book your survey today.
Frequently Asked Questions
Why do I need a Pre-Build Survey for my New Malden extension?
A Build-Over Agreement is required if you are building within 3m of a public sewer in New Malden. It protects you and the water authority.
Will this survey satisfy Thames Water in New Malden?
Yes. We use WinCan reporting software, which is the industry standard accepted by Thames Water and New Malden building control.
What happens if you find damage during the New Malden survey?
We will provide a clear HD video of the damage and a fixed-price quote to repair it before your New Malden build commences.
Do I need a post-build survey as well in New Malden?
Often, yes. Water authorities in New Malden may require a “Post-Build” check to ensure your construction hasn’t damaged the sewer.
How long is a Pre-Build Survey valid for in New Malden?
Usually, these surveys are valid for 12 months, provided no significant groundworks have occurred on your New Malden site since the check.
Can you trace the depth of the pipe for my New Malden structural engineer?
Absolutely. Our Sonde and Trace technology provides the exact depth data New Malden engineers need for footing designs.
Do you work with New Malden-based architects?
Yes, we are the preferred drainage partner for many architectural firms across the New Malden area for all pre-construction works.
Is the survey messy or disruptive to my New Malden property?
Not at all. It is entirely non-invasive. We access the pipes through existing manholes on your New Malden site.
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Find your local team
We proudly serve
- • Kingston Upon Thames
- • New Malden
- • Worcester Park
- • Surbiton
- • Thames Ditton
- • Molesey
- • Chessington
- • Esher
- • Cobham
- • Walton On Thames
- • Weybridge
- • Byfleet
- • Addlestone
- • Chertsey
- • Epsom
- • Tadworth
- • Ashtead
- • Leatherhead
and all surrounding Area.