Trimming Cypress tree @ the Fence

[Brett2021]

I have large Cypress trees (Chamaecyparis lawsoniana) at my Fence they have lots of branches from base and gives good privacy. Its not been cut in last 6+ years. Now its over grown at both sides of fence up to 8 meters!

My neighbour also keen for me to cut them, but since they grown out so much that if I trim them there will not be any privacy as branches at the bottom don'y have any leaves closer to main stem.

See photos, Any tips how can i trim these without loosing much privacy..?

 

[blup]

I believe you can only cut back to any new shoots, beyond that there won’t be any re growth.

Blup

 

[lostinthelight]

Once they've be let go like that your on a hiding to nothing trying to get a satisfactory result.
Have you considered raising the crown and either planting shade tolerant hedge, shrubs or erecting a fence which would increase usable space of your garden?

 

[Brett2021]

Trouble in planting new trees/hedge /shrubs near these is nothing grows near that area as no sunlight. Don't even have any grass near these trees as no sunlight through its branches.

 

[lostinthelight]

If you own the trees: https://www.gardenninja.co.uk/how-to-crown-lift-a-tree-stop-trees-shading-your-house/