Can anyone in Wellington recommend a company for House Rebuild Valuations?

I've been meaning to get it done for over a year now and and with the insurance up for renewal and with over 40 meters of extensive retaining walls I want to make sure it is done properly.

I've done some Googling but its hard to tell what you'll get. And as they don't need to be registered or certified I thought I would ask the community for any recommendations.

Cheers.