Our current house was a new build with nothing done. We have a dog, so landscaping and a fence were priority number one, less so for neighbours.

I solved my problem and told both neighbours we were doing the fence, we were deciding how it was done, and we would be receiving none of their imput or money, lol. Since it's a cul-de-sac on a hill with alley, I also wanted a 2ft retaining wall to keep my yard level, and didn't want to argue with either of them since that added thousands to the cost.