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

Build-Over CCTV Inspection
The "Before" report required by Thames Water for Dover properties, documenting the structural integrity of the sewer before any groundworks begin.
Get A Free Quote→

Depth & Invert Level Verification
We provide the exact measurements Dover architects need to calculate foundation depths and avoid crushing local drainage lines.
Get A Free Quote→

Public Sewer Identification
Determining exactly which pipes are your responsibility and which are Dover’s public assets—a critical distinction for legal build-over agreements.
Get A Free Quote→

Load-Bearing Site Mapping
Mapping the drainage network to ensure Dover new-build loads are distributed safely, preventing future pipe collapses or subsidence.
Get A Free Quote→

Pre-Construction Structural Audit
A full condition assessment of Dover pipes to identify existing cracks or leaks that must be resolved before construction equipment arrives on-site.
Get A Free Quote→
The "No-Dig" Solution for Dover Developers
Our solution focuses on deliveringthe hhighest-resolutiondata with zero site disruption. We ensure your Dover construction project meets all Part H Building Regulations through non-invasive, high-speed diagnostics.
- ◉ Precision Sonde tracing to identify pipe direction on Dover sites.
- ◉ Detailed WinCan reports accepted by Dover's legal and water authorities.
- ◉ Technical advice on pipe protection and diversion for Dover builds.
Non-Invasive Site Intelligence
Our Pre-Build Survey is entirely trenchless, using advanced camera technology to explore your Dover site without disturbing the ground.
Dover Site Prep
We identify all access points and map the build-zone relative to existing Dover sewer assets.
Our engineer arrives at your Dover address equipped with the latest CCTV technology.
HD CCTV Exploration
High-resolution cameras are inserted to document every joint, crack, and connection in the Dover network.
Data Package Delivery
You receive a professional report containing HD video, site maps, and depth data for your Dover build-over application.
What Our Customers Say
Daniel K., Dover Architect
"Highly Efficient. We needed a Pre-Build Survey for a Dover town-center project. They coordinated with the agent and delivered the Thames Water-ready report in 24 hours."
Megan R., Dover Homeowner
"Peace of Mind. Our Dover 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., Dover Project Manager
"Professional Data. Their mapping was millimeter-perfect. Essential for any developer working in the Dover area who wants to avoid planning delays."
Why Choose Us?
We are Dover’s leading pre-construction drainage authority. Our team provides the specialized technical data that Dover’s professional building sector demands for every project.
Dover Infrastructure Knowledge
Our engineers have years of experience working with Dover’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 Dover area.
Solicitor & Authority Approved
Our reports are specifically formatted to be accepted by Dover local Council and Thames Water, streamlining your build-over agreement.
Fixed Dover Pricing
We provide transparent, upfront quotes for all Dover projects, ensuring you can budget for your survey without hidden "emergency" fees.
Rapid Site Turnaround
We know Dover 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 Dover developers and homeowners.
Secure Your Dover Build-Over Approval.
Get the professional drainage data your Dover project needs. Book your survey today.
Frequently Asked Questions
Why do I need a Pre-Build Survey for my Dover extension?
A Build-Over Agreement is required if you are building within 3m of a public sewer in Dover. It protects you and the water authority.
Will this survey satisfy Thames Water in Dover?
Yes. We use WinCan reporting software, which is the industry standard accepted by Thames Water and Dover building control.
What happens if you find damage during the Dover survey?
We will provide a clear HD video of the damage and a fixed-price quote to repair it before your Dover build commences.
Do I need a post-build survey as well in Dover?
Often, yes. Water authorities in Dover 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 Dover?
Usually, these surveys are valid for 12 months, provided no significant groundworks have occurred on your Dover site since the check.
Can you trace the depth of the pipe for my Dover structural engineer?
Absolutely. Our Sonde and Trace technology provides the exact depth data Dover engineers need for footing designs.
Do you work with Dover-based architects?
Yes, we are the preferred drainage partner for many architectural firms across the Dover area for all pre-construction works.
Is the survey messy or disruptive to my Dover property?
Not at all. It is entirely non-invasive. We access the pipes through existing manholes on your Dover site.
Helpful
Drainage Advice
Prevent blockages.
Spot problems early.
Avoid emergency call-outs.
View all tips→
5 Crucial Signs You Need Pitch Fibre Pipe Repair Now
Is Your Dover Septic Tank Emptying Cost Fair?
Say Goodbye to Blockages: Hard Water Drain Descaling Dover
Find your local team
We proudly serve
- • Canterbury
- • Harbledown
- • Wingham
- • Chartham
- • Whistable
- • Herne Bay
- • Birchington
- • Westgate on Sea
- • Margate
- • Broadstairs
- • Ramsgate
- • Eastry
- • Deal
- • St Margaret's at Cliff
- • Whitfield
- • Dover
- • Hawkinge
- • Folkestone
- • Hythe
and all surrounding Area.