Hi Kristian
I am originally from Scotland but now live in Namibia. I have been investing in property in USA for over 6 years and purchased several residential properties all from a distance without ever having to visit them. I have used two different companies and set up a great team of people on the ground to manage my portfolio. So it's certainly possible. My advice is to speak to as many people as you can and ask lots of questions as well as getting references to verify people's services. I set up an LLC and registered for my ITIN number, I have an attorney an accountant, and a management team of course this has additional costs but if you find good deals it can still turn a profit. Most of my deals have been private lending which comes at a higher rate but again you just got to make sure you work it into your deal.
If you have a history in NH that may be a good place to start searching for deals as you may feel more comfortable but at the end of the day, it's all about the team you build and finding good deals.
Good luck and reach out any time if you have questions.
RJR