I would make sure you get a propr mgmt certification to make sure you know EVERYTHING about service dogs, marijuana laws, eviction info, how to handle all tenant issues, like them vacating before their lease is over, tenants not paying rent or causing a neighborhood nuisance, etc. 

I would also remind everyone that marijuana possession and consumption is still a federal offense so Landlords are well within their rights to ban it from their property.

Are you up to date on fair housing, pets, service animals, marijuana laws, etc. 

The neighborhood is pleasant, except we have a next door home wherein 2-3 families are living in , the property is unkempt to say the least, usually someone is arguing and or fighting in the home, place reeks of marijuana and they have 3-4 dogs and 1 of the dogs they can't really control.Not sure if I'm being too overly cautious but I feel I can't in good conscience rent my home to another family knowing all I know with the nextdoor neighbor.Should I start from scratch and sell the house and buy a new property or keep and rent the house and buy a new property?

Regular landscaping/yard care (mowing, edging, trimming, fertilizer, weed control) will be provided by ____(check one)____ [   ] Landlord  [   ]  Tenant .For all Tenants:a.Tenant agrees to keep yards, walkways, patios and decks clear and to keep premises free of junk and debris.b.Tenant accepts liability for all landscape damage and/or replacement of such, if caused by neglect, abuse or lack of water.c.Tenant may plant the beds adjacent to their dwelling to their liking, but only with those plants that are of appropriate size and type for the beds.All plants brought or caused to be brought to the property by Tenant will be cared for by Tenant.d.Tenant agrees not to cut or prune trees, hedges and shrubs.This will be Landlord’s responsibility.e.Tenant agrees to properly dispose of all plant debris and agrees to not leave such on the property.f.Landlord will consider special Tenant requests for planting and removal of plants, shrubbery and trees, but reserves the right to determine the make-up of the landscaping.g.Tenant agrees not to grow marijuana on the premises, indoors or outdoors.For Tenants of single family homes only: a.Tenant agrees to mow, water, and keep the grass, lawn, flowers and shrubbery thereon in good order and condition, applying fertilizers and weed retardant as needed. b.If Tenant fails to keep the landscaping in good order and to follow these guidelines, Landlord reserves the right to hire a landscaping service at Tenant’s expense (after a 10-day notice to perform covenant).c.Landlord reserves the right to restore the landscaping to its initial condition, as it was at the time Tenant began occupancy, or if improved during Tenant’s occupancy, to the level of such improvement.

Growing marijuana seems to be a lucrative endeavor in CA these days.

There appears to be a marijuana grow room built in the garage, it is legal to grow marijuana in accordance with Oregon Laws, however I believe this grow room does not comply with volume of plant growth.

Had a ring of marijuana smoking bicycle thieves break into one of my houses and set up shop in the living room. 

I am not a lawyer, but in my opinion, a strong odor of Marijuana is preponderance enough, even better if you have a witness smell it too. 

Where we dedicated all our time on learning about the marijuana county ordinances, zoning, and other applicable regulatory decisions.