If he’s in danger of losing the house I want to approach him and propose a win win strategy where I help him financially, and I end up with the house free and clear, or with him as a tenant, and me and the owner in the long run.

I assume its because the lender wants some assurance to limit risk to what is effectively their investment too, right?

If rent is due on April 1 notify him now for a rent increase effective May 1. 

It's amazing the negative effects rent control has had on the housing stock in areas it's in effect.

I think what may be lost on some, is the fact that the landlord verbally agreed that I was in danger due to the proximity of the houses and the people associated with next door.

Just because the real estate industry needed some means by which to justify the price for which a property was/is being offered does not  have any effect on the "value" of the the property...before/after/during a renovation, a sale, or a fire.   

I was wondering what effect, if any, this project will have on properties in the area.

There are plenty of cost effective commercial options out there right now where you could cash out up to 75% LTV into a 30 year fixed mortgage in the 5% range and keep the property in your LLC.

Local water hardness has an effect on cartridge life.Ceramic cartridges may last longer.If it's a real tough crowd you're renting too, this might be an option (they might be very used to it).https://www.acorneng.com/security-plumbing-fixturesGood Luck!

@Isaac Bazek Atomic Habits, the E Myth Revisited, Rich Dad Poor Dad, Never Split the Difference, The Seven Habits of Highly Effective People, and How to Win Friends and Influence People.