Climb to roof is an objective in the Side Quest, The Homestead Part 3 in Borderlands 3
- Look to the right(Northeast) from the platform across from the Target Valve.
- A ladder has been activated, giving the Vault Hunter access to the rooftop.
- Jump onto the ladder and climb up onto the platform.
- Go to the opposite end of the platform and climb up the next ladder to reach the rooftop itself.