You might be interested in this thread in the "deal diaries" forum... a guy rehabbed a triple-wide mobile home in California that sits on a big lot (not in a park). 

I'd love to stay in touch with you since I'm a Dorchester agent and landlord who loves loves loves triple deckers and all they provide.

You are not allowed to rent this out on your own, ie airbnb VRBO etc.The strata fees are only about 40/month (to each of the 12 owners) however there have been facility improvement charges etc that can double or triple that with bed sheets upgrades and levies.

It can be done (even if it is your first project), just need to triple check your numbers.  

I need to at least triple in size first :) I will message you her info.  

Building looks brand new.Size: 6,350 square feetAnnual Rent: $76,200 Lease Type: Triple net lease (NNN) - No costs for me to bear at.Tenants: 1 Tenant - Global industrial company (Worth over $20 billion - listed in London)Lease Period : 3 years with two 3 year renewal options (10% rent increase per renewalPrevious tenant: Was another large industrial company, they left 6 months ago and moved to a new building.

My goal:cash flow, pay down the building to build equity to either purchase additional properties.Plan on holding for 15-20 years.4 unit building, a large triple decker with addition. in small, working class city in Maine.

You could find yourself blazing down an unintended path with triple the effort you are expending now.

Its cumulative effect can double if not triple your retirement amount tax free if done and managed properly early in your life or it can double or triple your losses if done improperly.  

There are what are called triple net leases (NNN) where the tenant is literally responsible for EVERYTHING but would not expect you could write that kind of lease for the space you are describing.As you scale up in the commercial world it is common to see a base rent and a separate amount to cover Common Area Maintenance (CAM).