Posted: Mon Jul 3, 2023 7:05pm
Having read the post and the replies I agree that you appoint a lawyer and an engineer/surveyor if you cannot get a prompt and positive response from the insurer. I will only add that you should take plenty of photos as soon as possible so that you have a record of the site conditions and depth of excavation as close as possible to the time that the damage was discovered. From your description of the work it appears that the contractor has excavated below the bottom level of your house foundations and has removed their support. When excavating below the foundation level close to nearby/adjacent properties a contractor should provide shoring to the excavation walls to avoid such ground movement. This is normally a specialist engineering activity to design the appropriate scope of shoring. You need to ensure that you have photos of this aspect of the work before ongoing construction work conceals the evidence.
You have said that the Insurer previously claimed that it is subsidence and I would strongly contest this . Subsidence can be caused in various ways but is generally described as the earth sinking below the property , mostly due to water removal or mining activity.. In your case it appears that the excavation has removed the earth next to your property and as you can see from the photo foundations exert downwards pressure in a bulb shape. Since the contractor appears to have removed the soil in his property below your foundation level your house no longer has the earth support it needs and so the building loads being partially unsupported have caused movement . This would definitely not be a case of subsidence as it is not the earth which has moved downwards but your property has