Another update for those following the saga.
As you have all probably read, I had concerns regarding the wording on the reports produced. My primary concern that the documents' wording was tantamount to describing subsidence and could be considered purposefully deceptive.
Following another round of enquiries, mostly around whether the current owners have declared subsidence, they have finally sent a document which dispels most of my worries and should also re-assure any future purchasers.
The property was owned by the previous, previous owners since 1968. They evidently either passed away or moved out in 2013. The property was placed up for sale and a prospective buyer (I don't think it was the eventual buyers - i.e. our sellers) had a survey done which suggested there may be a subsidence issue (this is referred to in a document I am about to describe). This triggered the owners to start an insurance claim, with a view to confirming the diagnosis of subsidence and organising the repairs. The insurance company at the time instructed a specialist subsidence/structural surveyor to assess the property. The opening letter from the insurance company introduces the report as you would expect, but the following quotes are the most important:
"The engineer has confirmed there is no evidence of recent or progressive subsidence damage to the property and there is no cover for the cost of repairs under the subsidence section of the policy".
In summary - no need to action repairs under subsidence coverage as the engineer has confirmed the damage is not substantial or recent/ongoing enough to be considered subsidence.
Second quote:
"We hope that you are reassured that your property is not suffering from subsidence and that the information provided in the report will assist you in arranging the appropriate repairs".
In black and white. From an insurance company. Not considered subsidence.
Some notable quotes from the report which follows:
"All external cracking is associated with past re-pointing repairs of cracks from the mid 1980s (They must've confirmed they had re pointing done during their ownership) and internal cracks appear to be due to poor past repairs to damaged plaster, given that external cracks only show hairline movement". But then it says "It is not possible to give a diagnosis as to the cause of the past movement, but it is clear that it is longstanding with no sign of ongoing movement". The document also makes a point of identifying the trees/bushes in the vicinity of the corner of the house, but does not blame them specifically for causing settlement or movement.
This is then followed by an explanation of why internal cracking appears when brick walls are adjacent to studwalls - Timber (humidity) and brick (thermal) changes which are incompatible with their movement dynamics.
followed by:
"The cracks are cosmetic in nature and can be dealt with using routine maintenance"
Final conclusion and requirements statement:
"The damage has not been caused as a result of recent or progressive subsidence. The damage is considered to be of a historic nature and longstanding".
This pretty much all adds up now - there was cosmetic cracking identified as not being subsidence. The new owners had their own survey done where it was recommended that the bush and tree next to the house were to be removed as the previous settlement movement may have been caused by root under-mining. They had the trees/roots all removed. Unfortunately, it appears that this didn't help the ground condition (possible even made it worse) and as a precautionary measure, it was suggested that the foundation be underpinned. Work all completed to the correct standard and signed off by the building control. There was no further movement recorded from the time of the initial survey and the final survey, even post - tree removal. It was a further inspection to the ground which deemed it necessary to carry out the underpinning - it wasn't driven by further movement of the walls.
So.... might be a goer now. Can get decent insurance £300 for building /£600 combined with contents (lots of items insured outside of the home for loss)
The stigma of underpinning is still a concern obviously, but i'm glad the whole story adds up now - i'm glad we've got the complete paper-trail.
Even if we only stay for 10 years, the underpinning is irrelevant to insurers after 15 years so it wouldn't be far off.
Any closing advice???
Cheers