Hire your own team
If you’ve got the money, this is a great solution. Your own team of trained surveillance professionals will sweep your house for bugs, scout the surrounding location for observers, and run interference against any possible tail when you decide to go out. These guys come with all the tech you need to defeat various types of listening devices or hidden cameras, and they will have the same level of training as their opponents.
The risk here is that the person employing the team watching you will have hired or co-opted other organizations as well. Vet each member of your team carefully; infiltration is always a danger. Just because you’re paying these guys doesn’t mean you can trust them.