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

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