Drainage tips and London case studies
Clear, practical guidance for homeowners, landlords and businesses who want to avoid blocked drains, spot warning signs early and know when to call a drainage engineer.
North London drainage: what we see across N and NW postcodes
Shared laterals, conversion density and basement kitchens. The faults follow the housing.
Building over a sewer: build-over agreements explained
Why the 2011 transfer means a pipe under your garden may not be yours, and what that means for building.
Sewage backing up: what to do in the first ten minutes
Immediate steps when foul water is coming back into the property.
Landlord drainage obligations: what the law expects and what tenants owe
Section 11 puts drains on the landlord. Tenant misuse is a real but narrow exception.
Drainage and home insurance: what is usually covered and what is not
Sudden failure is often covered, wear rarely is, and evidence decides how the wording is applied.
Buying a house in London: is a drain survey worth it?
The homebuyer survey stops at the manhole cover. For older London housing, that is the gap.
What does it actually cost to fix a drain in London?
Clearance, survey and repair are three brackets. Confusing them is how people overspend.
Who is responsible for a blocked drain in England?
The 2011 transfer explained: what is yours, what is Thames Water's, and how to tell before paying.
Commercial drainage in the City and Shoreditch: working around trading hours
Catering density, Victorian sewers and permit-controlled access. The pipe is rarely the hard part.
Drainage in mansion blocks: communal runs and who arranges what
Almost everything is communal, which changes who calls, who pays and how fast it moves.
Converted flats and shared soil stacks: whose blockage is it?
The lowest flat sees it first and is rarely the cause. What decides who pays.
Clay soil and drains in south London: why joints keep opening
Seasonal ground movement works rigid clay pipework apart. It is the defining fault south of the river.
Riverside London: high water tables and slow surface water
Tidal influence and a high water table mean there is no spare capacity in the system after rain.
Basement flats and pumped drainage in central London
Why a pump alarm usually means the discharge run is restricted, not that the pump has failed.
Choosing a drainage company: seven questions worth asking first
Most complaints trace back to something never agreed on the phone. Seven questions fix that.