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

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