John wrote:
We have a single storey extension about 7m x 4m and were wondering
about making it two storey.

How would we find out if the foundations were adequate?

If not what options are there?

What are the "order of magnitude" costs for either putting on a second
level and extending the pitched roof, or rebuilding from ground
upwards?

Any thoughts welcome!

How old is the extension?

Our single-storey extension was built 10 years ago and the builder said that
Building Regs required foundations to be adequate for two storeys even
though - for other reasons - that's extremely unlikely to happen in our
case.

--
LSR