Does anyone have any suggestions on how to implement this~?

Thanks in advance.

such a thing is possible but would be easily exploited such as quickly deploying a TC to kill anyone. it would need to prevent damage from new TC for some time first. this would partially defeat the purpose of the feature when a player has just started building their base. im open to ideas. 

I have published a free plugin called Player Base PVP Zones to implement this exact behavior. It provides configurable PVP zone creation delays among many other things.