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Trevtherev
United Kingdom
1 Posts |
 Posted - 03/12/2010 : 19:14:19
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I am looking to buy a house that has had an over garage extension. However, the estate agent informs me that the garage footings are not deep enough to support the extension. The garage is attached to the house, which is not a modern house, 1930's I believe
How much would it cost to put right the footings, ballpark figure? Also does it have any longer term structural implications and extra future insurance costs,when a house has been extended with inadequate foundations??
Any help/advice much appreciated |
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spring56
United Kingdom
105 Posts |
Posted - 03/15/2010 : 13:02:14
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I assume the estate agent has some structural report referring to the foundations - this would usually have some sort of description of remedial work required. What thickness is the external garage walls? Underpinning could be the answer, however If you could provide more information. ie exist depths/widths etc. for others to advise on costs etc.
PJ |
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DevilDamo
United Kingdom
58 Posts |
Posted - 03/25/2010 : 00:48:10
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Has the estate agent told you whether or not planning/building regulation approval was sought for the first floor extension? If building regulations approval was applied for, an inspector would have carried out visits and would have asked to inspect and be satisfied the existing foundations, ground floor walls/lintels, etc... would be adequate to receive any additional loading.
However, if you're talking about having the foundations underpinned, then I'd suggest you or the estate agent getting a structural engineer in to determine what remedial work is exactly required because there may be other things that need upgrading structurally other than foundations. If an engineer is unable to provide you with a ball park figure, then there's no reason why you couldn't use their advice and approach a local builder/contractor with additional experience in groundworks, especially underpinning to obtain a quotation and maybe use that to knock down the sale price of the house? |
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nomakeover
14 Posts |
Posted - 04/16/2010 : 14:43:35
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Remedial work to footings/foundations is a bit more specialised than laying foundations.
1) Trial hole dug to ascertain depth of original building foundations
2) Trial hole dug to ascertain depth of garage/extension foundations
At this point one can assess how much work is involved, due to depths of existing foundations, bearing qualities of the ground, and the accessibility of the current substructure & foundations. The reason why it is quite a bit more expensive than normal foundation work, is that generally it is done piecemeal, working gradually around the perimeter, digging out, supporting, backfilling with concrete. |
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Foundation repair cost
