With the Mega March update, the claim systems on PvE will change from being lawless-esque servers to the following:

Use the same claim system as PvP, but remove the raidable hours and war aspect. This means that players will be able to claim islands, and anyone can build on those settlements. Each settlement will have an upkeep cost which is based on a variety of factors such as the islands ranking, the number of settlements that company has, and how many different companies are building on the settlement. Settlement owners will be able to set a tax rate, and also players will be able to place their player run shops on the claimed land.

PvP Claim Changes

We’ll also be adding some new options along with changing how cannons are used during raidable/wartime hours.

Content retrieved from: https://www.mmorpg.com/atlas/news/atlas-developers-update-the-community-on-adjustments-to-the-claim-system-1000051742.