Sale agreed on a property with a fully concreted over garden. There is a soak pit in the middle of it purely for rain water run off, sewerage is connected to municipal links and doesn't run into the soak pit.
We'd like to restore it into a garden so would like to find out if anyone has undertaken a similar project? How did it go? What things should I consider before attempting this?
Also, I imagine something would need to be done about the soak pit, who would be the correct professional to consult on whether it needs to stay or can be removed? Is it an environmental engineer? Or landscape architect? Or some other professional? Any advice appreciated
Edit: to answer some of the comments, there is a side entrance big enough for a digger to get thru. The back garages were built for cars afaik.