Yes, if you are looking for existing homes Realtor.com and just filter (muti-family) in the property type.

In general, if your existing three units are running well and you will cash flow nicely when you leave and there is limited cap ex, I would look into acquiring another property and leave the basement for storage, laundry.

My brother plans to continue to live in the existing house while I move into the back house for the foreseeable future. 

What does NH tenant law say about existing leases?

The problem with it is it's hard to find properties with the right zoning (they exist) and also where you can get the right kind of insurance (due to wildfire risk).

It is super helpful to be to discuss such items on this forum and know I am not the only one learning the options that exist

The Sellers and Seller's agent is claiming that none of these were damages from them or that they are pre-existing. 

But existing housing stock? 

We did this through syndication, which is a word I didn't even realized existed a couple of years ago when I started listening to BP. 

We have properties that have machines that we own in our laundry rooms as well as properties that have machines from a vendor.It comes down to whether you have an existing contract in place (these tend to be long term - 10yrs and often inherited) , how much use/income you anticipate and whether you are willing to take on the maintenance of the machines.For in-unit machines, you can buy and rent them out to the tenants or you can partner with other vendors who will do a revenue share.Hope that helps.