Can you advice if I still get tax benefit at least some portion for when It was owner occupied between 2018 - 2022 Feb?

Each area has it's own personality, so finding the one that fits your style and budget is going to benefit you in the long run.

Ask your lender if there are some quick fix things that can be done to improve your credit score so that you can benefit from better pricing. 

Good afternoon real estate investor friends.I’ve been using this water submetering system in small multifamily properties to much success and wanted to share.When you can submeter water and pass the costs along to tenants, you increase the net operating income of your asset, which in turn makes your property more valuable.One of the biggest benefits to such a system is gaining greater control over your property.

Also what are the benefits of starting one?

It can still be very worth it considering the extreme rent reduction, appreciation, loan paydown, and tax benefits.

Regarding your GF's grandmother's home, you should consider setting up a recorded legal agreement with an attorney in the matter that benefits everyone that is part of the deal.

Buy and hold typically provides the best tax benefit if you are either a RE pro for tax purposes, or your AGI is under $100k. 

In a case like that I do not see the benefit of changing a roof that still has life left in it.

I would buy stock following the value investing strategy followed by the Warren Buffet etc.Real Estate has that benefit of control over the assetSO i guess both would do, its just a question of weighting -95% real estate-5% stocks for example