LogInPlayer Build System is a free system that will help you set up building mechanics.
Player Build System is designed to "give developers an easy and fast way to add building features to their games. Easy to add to any project and including first and third-person character blueprints to suit any needs," states the developer.
Features
- Multiplayer Compatible
- Save System (Single Player recommended)
- Third/First Person Camera Toggle
- Grid Building System
- Resource System
- 11 Build Types
- Simple and Clean UI (Widgets)
- Wood and Stone Build Styles
- Delete System (Realistic, Unrealistic and Collapsing)
- Damage System
- Repairing
- Upgrading
- Ownership/Permissions
The best thing, of course, is that the pack is free in December. You can learn more and get it here.