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Business Details
30 Years
experience
Expert Drainage Surveys and Sewer Mapping Services
Established in 1996, Onspot Surveys is a family-run business with extensive expertise in drainage and utility surveying. Our director, Mark Rochelle, brings nearly 40 years of industry experience, having mapped drainage systems across Devon and Cornwall. We specialise in sewer mapping, manhole surveys, and CAD drawing services, adhering to local authority specifications for sewer adoptions. Our team combines technical proficiency with local knowledge to deliver precise solutions for commercial and domestic projects. Accredited with CHAS, we prioritise health and safety while serving the South-West of England, Midlands, and South Wales.

Our services include GPS surveys, utility tracing, and environmental monitoring, supported by 18 years of experience in producing compliant drainage reports. We maintain a balance between personal care and professional capability to handle projects of any scale within our expertise. Our office in Dawlish, Devon, ensures efficient coordination for regional and national clients. We offer free consultations and no-obligation quotes, backed by a proven track record of reliability. Our commitment to quality and client satisfaction has solidified our reputation as a trusted partner in drainage solutions.
Services
Sewer Mapping Manhole Surveys CCTV Surveys GPS Surveys Impermeable Area Surveys Utility Tracing Surveys Sewer Adoptions CAD Drawing Service
Details
  • Year established: 1996
Highlights and features
  • We have 40 years of experience in drainage surveying across Devon and Cornwall.
  • Our team holds CHAS accreditation for health and safety compliance.
  • We produce CAD drawings meeting water authority adoption requirements.
  • Local expertise combined with nationwide service coverage.
  • Free no-obligation quotes for all commercial and domestic projects.
Associations and certifications
  • CHAS
Services
Sewer Mapping
We create detailed sewer maps using advanced GPS and utility tracing technologies. Our surveys identify pipe networks, depths, and connections to ensure compliance with local authority standards. Ideal for construction projects requiring accurate drainage data.
Manhole Surveys
Our manhole surveys assess structural integrity and flow capacity using CCTV and laser profiling. We provide annotated reports highlighting defects or blockages for maintenance planning. Suitable for municipal and private drainage systems.
CAD Drawing Service
Accredited CAD technicians produce precise digital plans for sewer adoptions and site developments. Drawings meet water company specifications including Section 104 and 38 requirements. Delivered in multiple formats for engineering use.
CCTV Surveys
Closed-circuit television inspections identify pipe damage, root ingress, or blockages in real-time. We provide video evidence and condition assessments for commercial properties and infrastructure projects across the South-West region.
Utility Tracing Surveys
Using PAS:128 Type B GPR technology, we locate and map underground utilities including water, gas, and electrical lines. Essential for pre-construction risk assessments and avoiding service strikes during excavation works.
People
Mark Rochelle
Director
With nearly 40 years in drainage surveying, Mark established Onspot Surveys in 1996. His expertise in mapping Devon and Cornwall's drainage systems provides unparalleled local knowledge for client projects.
Questions
What areas do Onspot Surveys cover?
We operate across the South-West of England, Midlands, and South Wales, with our Devon base supporting nationwide projects.
Are your surveys compliant with local authority requirements?
Yes, our sewer adoption surveys meet specifications including Section 104 and 38, approved by water companies and councils.
How experienced is your team?
Our director has 40 years in drainage, supported by 18 years of CAD expertise in producing adoption-ready reports.
What technologies do you use?
We employ GPS, GPR, CCTV, and accredited CAD software for accurate mapping and reporting across all survey types.
Can you handle large construction projects?
Yes, from single manhole inspections to full site surveys, we scale our services to meet commercial project demands.
How do I request a quote?
Contact us via phone or email for a free, no-obligation quote tailored to your drainage survey requirements.