Not to go into much detail

Tenant has a BF that has been in and out of the place. They have a place of their own. I got a call from their neighbor about the BF sending nasty letters. The neighbor sent them to me and they seemed a little weird. but that is because I only know part of the story.

The neighbor filed a complaint to the police and the police spoke to the BF.

Some options that I have:

1) tenant is month to month and I don't have an issue with her. She's always been on time. She's been there for almost a year and a half

2) BF should have been on the lease but I do have a clause stating that people that cause nuisances are not allowed to be on the property.

3) I can evict because it's month to month?

4) Talk to them first and tell them what i know and get their side?

Also, my real estate agent told me that I should evict and just say I am having family moving in and renting.

I follow one simple rule dealing with your situation. When an issue affects two or more tenants in an apartment property, then I will step in and try to smooth things out.

But when an issue concerns only one of my tenants, I try to have them deal with the situation on their own.

The only exceptions is when this will put a tenant of mine in danger...

Case in point, a tenant kept on getting woken up by a baby crying at 3 AM by a neighbor. I asked this tenant to have a nice conversation with the neighbor and to keep a log on her calendar. My neighbor said she would handle it. After 5 months my tenant decided to move and sent me her 30 day notice. When my tenant realized that under rent control her rent was 40% under market, she wanted to stay and gave the neighbor a piece of her mind. If the parents don't take measure to quite the baby down, close window or move it to the living room on the other side of their unit, my tenant would contact the police and child services.

The letters seem "weird" how? Is the guy dangerous or just a self-centered loonie? Is the neighbor difficult and provoking it?

I'd contact the tenant and give her a written notice that her boyfriend who is not on the lease has had a police nuisance call against him. Consequently, If there is another complaint he will no longer be allowed on the property and if she can't comply with the request to keep him off the property that she would receive her 30 day notice to vacate.

I try to maintain a civil relationship with my neighbors. I don't want non-tenants to have free rein of my property to harass and threaten my neighbors.

It's not easy to evict in Los Angeles, West Hollywood or Santa Monica. Too few courts making it a long and costly process. The average rent for a 1 bedroom in the area is around $1250-$1,500.

Dozens of rent controlled tenants are only paying $750-$1000.

My current tenants respect their tenancy and know they have a deal. They always pay their rent. Keep their apartments clean in in good condition. I do inspections every 6 months.

Weird how? So the police were called and talked to BF. You don't need to get involved, however it could be the neighbor did something that ticked him off? If you don't want BF there, you need to tell the tenant. If you don't want tenent there anymore just give her the proper month notice or whatever is needed in your state. DO NOT give a reason if you don't have too, which in my state is the beauty of M2M. And don't lie and say family is moving in.