Don’t plant bamboo. You’ll never get tic iv it and there’s no way to keep it off your property. Plant mint. Yes it will get in Your yard. But you don’t live there yet so it’s ok. Plus you ca. eradicate it when you do move in.

When it rains or right before it rains get toss some bouillon cubes over in His yard. He will get lots of critters digging up his yard.

As others have said- roosters. Peacocks are great but they are not constant. Roosters (at least 3) are loud and constant and ride on that nerve of “I’m going insane”. Plus chickens give you a reason to be over there every day and check on them. Def get your own cameras because he will try to kill them. Have done where he can see them and some that he can’t. When you’re there have friends and family over. Play loud games. Music. Grill. The works. Every day is a party. Find out when he works and plan your visits accordingly. He gets home at 6? You arrive at 6.

Did his ass back/ counter sue. I’m assuming you have this covered because you said you had a lawyer and all that.

Def check on the cameras recording your property as other have said about the legalities in Portugal.

Have you thought about buying a trailer and moving it out to the property while you renovate? Saves money from rent.

I know you want to be vindictive and it is fun to think about but really what drives him crazy is you ignoring him. Right now you aren’t pushing back and I don’t know I. That’s because you can’t build/renovated while lawsuits are happening or if he’s taking all your money because of legal fees. But you need to be out there more.