Professional Drainage Mapping Survey in Alton
Precision underground asset mapping and sewer tracing for Alton developments. Get the accurate site plans required for planning and construction.
- ◉ Precision Sonde & Trace Technology
- ◉ Detailed AutoCAD-Ready Layouts
- ◉ Non-Invasive Underground Detection
5cm Accuracy
We use advanced electromagnetic Sondes for pinpoint Alton sewer tracing.
100% Non-Invasive
Our mapping technology requires zero digging on your Alton site.
100% Local Compliance
All surveys meet Alton local Council and Thames Water standards.
Accurate Blueprints for Alton Property Assets
Accurate Blueprints for Complex
Drainage Networks.
Managing a property or development in Alton without a clear site plan is a high-risk gamble. Our Drainage mapping survey is designed to remove the “invisible” obstacles that stall Alton planning applications. Using advanced electromagnetic induction and sonar tracing technology, we produce a comprehensive layout of the entire drainage network. From heritage town-center sites to modern Alton business parks, we identify manhole depths, flow directions, and pipe diameters with surgical precision, ensuring your project stays on track and on budget.
Alton’s Most Comprehensive Drainage Mapping Suite
We provide the high-precision data that Alton architects, developers, and engineers rely on. Our services ensure full compliance with local Alton building regulations and water authority requirements.

Sonde & Trace Locating
We use radio-frequency "Sondes" to trace the exact path of Alton sewers above ground, even through deep concrete or soil.
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Connectivity Verification
We map the "As-Built" flow of your Alton site, ensuring every gully and stack connection is correctly identified and documented.
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Manhole Schedules
Detailed technical data for every access point in your Alton network, including cover levels, invert depths, and pipe materials.
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Build-Over Agreements
Providing the specific CCTV mapping required by Thames Water for Alton properties building within 3 meters of a public sewer.
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GPS Asset Tagging
We provide precise coordinates for Alton’s major drainage junctions, essential for large-scale commercial site management and future-proofing.
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The "No-Dig" Intelligence: How We Map
Precision Data Without the Excavation.
Old-school mapping involved “exploratory” digging and guesswork. Our modern Drainage mapping survey uses non-invasive technology to see through the ground.
- ◉ GPS Tagging: We can provide coordinates for every major junction and manhole on your site.
- ◉ Depth Accuracy: Critical for avoiding "utility strikes" during excavation or piling works.
- ◉ Integration Ready: Our data is presented in a clear format that your architects can easily overlay onto their existing site plans.
Non-Invasive Site Mapping
Our workflow is designed to minimize site disruption while maximizing data accuracy for our Alton clients.
Technical Site Audit
We review your Alton site drawings and identify the specific areas requiring sonar tracing and depth verification.
Sonde & Trace Execution
Our Alton engineers use non-invasive electromagnetic equipment to “paint” the underground infrastructure above ground.
Digital Data Delivery
We compile your Drainage Mapping Survey into a professional pack, including site maps, schedules, and HD footage.
What Our Customers Say
Mark T., Alton Architect
The most accurate mapping service in Alton. Their data allowed us to design a complex extension in Alton town center with zero surprises.
Elena G., Alton Property Developer
Reliable Technical Data. We needed a build-over survey for a project in Alton. They delivered the WinCan report and site map within 48 hours. Five stars.
David S., Alton Site Manager
Essential for Site Safety. Their tracing saved us from a major utility strike on our Alton commercial site. Professional, fast, and very local.
Why Choose Us
We are Alton’s premier technical mapping specialists. Our team focuses exclusively on delivering the high-precision underground data that Alton’s professional sectors demand.
Alton Industry Experts
Our engineers have an intimate understanding of Alton’s drainage topography, from the Thames-side water levels to the higher ground of the Alton suburbs.
Advanced Sonde Technology
We use the latest in electromagnetic tracing technology, ensuring that our Drainage Mapping Survey results are the most accurate available in the Alton area.
Planning Permission Ready
Our reports are formatted specifically to satisfy the requirements of Alton local Council’s planning department and local structural engineers.
Transparent Alton Pricing
We offer fixed-price mapping packages for the Alton community, ensuring developers can budget accurately without worrying about hidden local fees.
Fast-Track Digital Delivery
We know that Alton construction projects run on tight schedules. We deliver our technical mapping data via secure cloud links within 24–48 hours of site completion.
Non-Invasive Approach
Our mapping is entirely trenchless. We protect your Alton property’s surface while revealing exactly what is happening beneath it using sonar and CCTV.
Precision Mapping for Your Alton Project
Get the underground data you need to build with confidence. Contact Alton's mapping experts today.
Frequently Asked Questions
Can you map drains under existing buildings?
Why do I need a mapping survey instead of just a CCTV check?
A CCTV check looks for conditions (cracks/blocks). A Drainage mapping survey looks for location and direction. You need this for legal site plans and construction.
Do you provide AutoCAD files?
What is a Drainage mapping survey?
It is a technical process using sonar and cameras to find the exact location, depth, and direction of underground pipes across a Alton property.
Do I need this for my Alton house extension?
Yes. If you are building over or near a sewer in Alton, your build-over agreement will require a professional mapping survey.
Can you trace pipes under existing Alton buildings?
Absolutely. Our Sonde technology can transmit through foundations, allowing us to map internal Alton drainage lines without any excavation.
Is this survey different from a standard CCTV check in Alton?
Yes. A CCTV check looks for conditions; a Drainage mapping survey provides location and depth for site plans.
Helpful
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Spot problems early.
Avoid emergency call-outs.
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We proudly serve
- • Guildford
- • Cranleigh
- • Godalming
- • Farnham
- • Farnborough
- • Camberley
- • Mytchett
- • Lightwater
- • Bagshot
- • Windlesham
- • Woking
- • Hindhead
- • Haslemere
- • Liphook
- • Liss
- • Alton
- • Bordon
- • Yateley
- • Sandhurst
- • Fleet
and all surrounding Area.