This is part of the territory when you buy houses in these types of neighborhoods.

Even without those, it is still cheaper to go solar with battery(ies) areas such as PG&E territory than stay with utility only.

I am trying to help him but liens are unknown territory for me.

Once you have a presence lots if your business should come from referrals. 

Quote from @Chris Mitton: Colorado law doesn't specify how much notice landlords should give before entering a rental—unless the entry is to inspect for or treat the presence of bed bugs.

There is a lot of work to build a presence but it could be worth it.https://ahrefs.com/blog/seo-ba...

Again, everything can be done electronically and your presences in the US is unnecessary.It wouldn't hurt to check with an attorney.

Market there is probably pretty good since Toyota and other manufacturing companies have a large presence.

They may gripe that they're losing some territory, but you can talk to them, explain that as a charitable gesture you've dedcided to forgo this years rent increase....You may check with your building deprtment before you knock out, they may require that new construction must look like and resemble the existing houses.

If you just buy it straight through the LLC, I believe that gets you into commercial loan territory, even for single family properties.