Architect

For the purposes of this feat, a building is any structure smaller than a small castle.

You've built several buildings over the years(or maybe not. I don't know), giving you the following benefits

• It takes you half the time and resources to construct buildings
• Construction supplies that were at an initial price of between 10gp and 150gp cost half as much 
• You get advantage Persuasion(Charisma) checks made to convince a land owner to build somewhere.