A keystone block retaining wall can be a great landscaping feature in your place. They're a good way to flatten off an area in your yard, to create some useful space or make a raised garden and they're pretty easy to build yourself.

But it's always best to check with your local council before starting to see if your retaining wall needs to comply with any Unitary Plan or Resource Management Act Requirements

See the full guide here:
https://www.mitre10.co.nz/guidesand...