Side extension / wraparound extension in gardens area

Hello!

We've recently starting looking into an extension, as we need to create a wheelchair accessible wetroom downstairs, and need to reconfigure our space to allow for ground floor access.

I wondered if anyone would be willing to share plans and/or costs for extensions done in the area recently - or be open to me visiting so I can get a sense of the space?

Seems like a daunting process to start, so would love some inspo and benchmarks.

Kind thanks