This was a recent job where we originally quoted for a standard closed boarded fence but then the next door neighbour asked if we could upgrade to a double sided closed boarded design. As a result we upgraded the posts to 100 x 100's for extra support/strength and added rails / boards on both sides. The design was tricky as ground level between the two gardens increased significantly on one side as you came up the garden meaning we had to build a retaining section from stacked gravel boards on one side and use larger 7ft boards on the other for a section which were later cut down at the top to make sure they matched on both sides. Finally, capping as added for a premium finish.
We also added a small 4ft space boarded picket style fence with gate for one of the customers at the foot of the garden.
Both neighbours were delighted with the results and gave us a good review on google.