Structural report on basement conversion

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It is becoming increasing common in some areas of London for houses to be extended by converting or adding a basement under the existing building. 

Before and during the construction works, the neighbour’s structural engineer and contractor will make every effort to minimise any effect the works will have on the structure of adjacent properties.  For the engineer, they will have designed for the permanent, long term condition whilst the contractor will be responsible during the course of the construction work.  Despite this, some unwanted impact may occur in the form of cracking or movement in adjacent properties.  If these occur, you have a right that there should be no ill effects to your property due to the works undertaken by others beyond your property.  This applies under any works covered by the Party Wall act but is especially relevant for basement works.

In many boroughs of London, obtaining planning permission for a new basement requires a detailed study of how that basement might affect local conditions.  This detailed study is usually known on a Basement Impact Assessment, although some boroughs use other names.  This study will include an extremely detailed study of the effect of their basement on the foundations of your property, which will be signed off as acceptable by an independent engineer.  Your home should be surveyed prior to their construction works commencing then monitored during and after their  duration. 

If you have experienced cracking in your home and suspect it may be due to such works under a neighbour’s home, then we can help.  Structures-Made-Easy would visit your property to inspect the cracking or signs of structural distress.  We would then also inspect the neighbour’s property, including gaining an understanding of their construction techniques.  Using our familiarity and experience of such construction types we would produce our report defining the cause of the cracking and suggesting options for remedial works or addressing the cause.

If you would like to discuss further please feel free to contact us using our email support@structures-made-easy.co.uk or call us on 0207 965 7376 

Case studies

View Project

Acton 02 Ealing West London W3

Domestic conversion and extension.

View Project

Chiswick 01 Hounslow West London W3

Domestic conversion, extension and loft conversion.

View Project

Acton 01 Ealing West London W3

Domestic refurbishment and extension with internal alterations including Chimney removal

View Project

Brent 01 London NW10

Domestic ground floor side extension to outrigger of a terrace house.

 

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