You might think you can save money on building a fence or wall when your neighbors have to share the expenses. While this is true in most cases, there are exemptions. For example, a neighbor can avoid their financial obligation if they can prove that the intended barrier will provide less of a benefit to them. A neighbor may also claim an exemption if they can show that the cost associated with the project is unreasonably high. Similarly, they might be exempt if they can demonstrate financial hardship. In this case, they must be able to show that they can't afford the added expense of installing or repairing the barrier or fence.