Foundations specification - fee

The whole thing sounds daylight robbery to be honest - unless there's something very unusual about your extension, or the location.

I eventually got rid of my architect and structural engineer - and did all the design and calcs for a chapel conversion myself. It really wasn't rocket science - architects use the same specifications over and over again, and on most domestic works the structural calcs is no more than plugging a few numbers into a standard formula.

We have just had foundations put in for a two storey extension and the question of foundation depth was answered by our groundwork contractors in conjunction with the building inspector without involving any type of engineer at all. But we're in a nice ground conditions and it's a conventional house.

Do you have a non-conventional design or difficult ground conditions? (where are you?)

FWIW our structural engineer charges 60 + VAT per hour, so that's a lot of calculations you're talking about.

I should add, if you're going for full plans building regs approval, one approach is to just wait for the building inspector to come back with their comments: either the plans have enough information for them to pass or they haven't - they will ask for the calculations they need and there's no point having them done on the offchance.

Many thanks everyone - think I'll just try and get a couple of quotes. I'm pretty sure the full plans have gone off for approval (Jim), so depending on how long that'll be, i might just wait. No rush.

Rob