Unadopted Road

[Mytime]

Can I build 3 houses off an unadopted road already serving 5 houses

[atticus]

Yes, if you have planning permission and can secure all necessary rights of way over the road for construction traffic and the eventual owners and occupiers of the houses.

[dslippy]

Unadopted roads vary hugely, so get the exact arrangements first. The likley answer is yes, but you may have to contribuite a little bit more than looks fair.