Recent Build over Projects
Explore our recent build over drainage survey projects across Cheshire, Greater Manchester and Staffordshire, demonstrating how CCTV inspections support homeowners, architects and contractors before and after construction.
From identifying hidden drainage defects and mapping shared sewers to providing evidence for water authority approval, our surveys help ensure building works progress with a clear understanding of the existing drainage infrastructure.
Our projects include pre-build and post-build inspections for residential extensions, new developments and construction works near public or shared drainage systems.
PRE & POST-CONSTRUCTION VERIFICATION
Build Over Drain Survey in Stoke-on-Trent
Pre-build and post-build CCTV surveys identified existing fractures and root ingress within a shared drainage line. Our reports confirmed that construction had not worsened the defects, supporting water authority approval and final sign-off.
POST-BUILD DEFECTS & PATCH REPAIR
Post-Build Drain Survey in Mobberley
A post-construction drainage survey identified fractured pipework and restricted access to sealed manholes. Clearflow completed a structural patch repair and helped the contractor resolve the issues before final project handover.
DRAINAGE MAPPING & STRUCTURAL DEFECTS
Pre-Build Drain Survey in Warrington
A same-day survey of a five-bedroom property mapped the existing foul and surface water drainage networks, identifying broken pipes, displaced joints and root ingress. Our findings helped the construction team plan connections and remedial works before building began.
SHARED SEWER & PATCH REPAIR
Build Over Survey in Meir, Stoke-on-Trent
Ahead of a residential extension, our survey mapped shared and private drainage systems and identified cracked and displaced pipework beneath the proposed build area. Structural patch repairs were recommended to address defects before construction.
BLOCKED DRAINS & PRE-EXISTING DEFECTS
Pre-Build Drain Survey in Altrincham
A pre-construction survey for a two-storey extension uncovered blocked pipework, displaced joints, root ingress and inaccessible drainage assets. The findings provided the architect with clear recommendations for remedial works and further investigation.
SEVERN TRENT SIGN-OFF & SHARED DRAINAGE
Pre & Post-Build Survey in Stoke-on-Trent,
We completed drainage surveys before and after extension works, confirming that newly installed inspection chambers and connections were operating correctly. Existing defects had not significantly deteriorated, providing evidence to support Severn Trent's build over sign-off process.
DISPLACED JOINTS & EXTENSION PLANNING
Build Over Drain Survey in Stoke-on-Trent
A pre-build CCTV inspection identified displaced joints and minor deposits within a shared drainage line. Although the pipework remained serviceable, our findings established its condition before the proposed extension and informed construction precautions.
STRUCTURAL MOVEMENT & PATCH LINING
Build Over Drain Survey in Penkridge
Our survey identified displaced joints caused by structural movement within private drainage pipework. Although the system remained operational, we recommended structural patch lining before construction to reduce the risk of further deterioration.
COLLAPSED PIPEWORK & RESTRICTED ACCESS
Build Over Survey in Trentham, Stoke-on-Trent
A pre-build drainage inspection identified collapsed pipework, displaced joints and significant debris restricting CCTV access. We recommended clearance, further investigation and notification of the water authority before construction progressed.
Helpful build over guidance
Planning an extension or building works?
Whether you're building over or near an existing sewer, or need a post-construction inspection for water authority sign-off, our team can help.
Our build over drainage surveys provide detailed condition reporting, drainage mapping and the evidence needed to support your project.