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

Build-Over CCTV Inspection
The "Before" report required by Thames Water for Wandsworth 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 Wandsworth 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 Wandsworth’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 Wandsworth 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 Wandsworth 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 Wandsworth Developers
Our solution focuses on deliveringthe hhighest-resolutiondata with zero site disruption. We ensure your Wandsworth construction project meets all Part H Building Regulations through non-invasive, high-speed diagnostics.
- ◉ Precision Sonde tracing to identify pipe direction on Wandsworth sites.
- ◉ Detailed WinCan reports accepted by Wandsworth's legal and water authorities.
- ◉ Technical advice on pipe protection and diversion for Wandsworth builds.
Non-Invasive Site Intelligence
Our Pre-Build Survey is entirely trenchless, using advanced camera technology to explore your Wandsworth site without disturbing the ground.
Wandsworth Site Prep
We identify all access points and map the build-zone relative to existing Wandsworth sewer assets.
Our engineer arrives at your Wandsworth address equipped with the latest CCTV technology.
HD CCTV Exploration
High-resolution cameras are inserted to document every joint, crack, and connection in the Wandsworth network.
Data Package Delivery
You receive a professional report containing HD video, site maps, and depth data for your Wandsworth build-over application.
What Our Customers Say
Daniel K., Wandsworth Architect
"Highly Efficient. We needed a Pre-Build Survey for a Wandsworth town-center project. They coordinated with the agent and delivered the Thames Water-ready report in 24 hours."
Megan R., Wandsworth Homeowner
"Peace of Mind. Our Wandsworth 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., Wandsworth Project Manager
"Professional Data. Their mapping was millimeter-perfect. Essential for any developer working in the Wandsworth area who wants to avoid planning delays."
Why Choose Us?
We are Wandsworth’s leading pre-construction drainage authority. Our team provides the specialized technical data that Wandsworth’s professional building sector demands for every project.
Wandsworth Infrastructure Knowledge
Our engineers have years of experience working with Wandsworth’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 Wandsworth area.
Solicitor & Authority Approved
Our reports are specifically formatted to be accepted by Wandsworth local Council and Thames Water, streamlining your build-over agreement.
Fixed Wandsworth Pricing
We provide transparent, upfront quotes for all Wandsworth projects, ensuring you can budget for your survey without hidden "emergency" fees.
Rapid Site Turnaround
We know Wandsworth 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 Wandsworth developers and homeowners.
Secure Your Wandsworth Build-Over Approval.
Get the professional drainage data your Wandsworth project needs. Book your survey today.
Frequently Asked Questions
Why do I need a Pre-Build Survey for my Wandsworth extension?
A Build-Over Agreement is required if you are building within 3m of a public sewer in Wandsworth. It protects you and the water authority.
Will this survey satisfy Thames Water in Wandsworth?
Yes. We use WinCan reporting software, which is the industry standard accepted by Thames Water and Wandsworth building control.
What happens if you find damage during the Wandsworth survey?
We will provide a clear HD video of the damage and a fixed-price quote to repair it before your Wandsworth build commences.
Do I need a post-build survey as well in Wandsworth?
Often, yes. Water authorities in Wandsworth 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 Wandsworth?
Usually, these surveys are valid for 12 months, provided no significant groundworks have occurred on your Wandsworth site since the check.
Can you trace the depth of the pipe for my Wandsworth structural engineer?
Absolutely. Our Sonde and Trace technology provides the exact depth data Wandsworth engineers need for footing designs.
Do you work with Wandsworth-based architects?
Yes, we are the preferred drainage partner for many architectural firms across the Wandsworth area for all pre-construction works.
Is the survey messy or disruptive to my Wandsworth property?
Not at all. It is entirely non-invasive. We access the pipes through existing manholes on your Wandsworth site.
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We proudly serve
- • Pimlico
- • Brixton
- • Chelsea
- • Clapham
- • Earls Court
- • Fulham
- • South Kensington
- • Battersea
- • Balham
- • Barnes
- • North Sheen
- • Putney
- • Streatham
- • Tooting
- • Wandsworth
- • Wimbledon
- • Raynes Park
and all surrounding Area.