If you buy in your own name, the income and expenses will go on Schedule E, but yes, you will most likely (depending on amount of income) have to also file in MA as well as RI.  

I second that @Bob E.

Thank You @Bob E., but I'm currently not taking on new client

You just need some method to your madness and you also must be consistent going forward with respect to calculation of depreciation, interest expense if there is a mortgage (a portion could be an itemized expense on schedule A and the other could be a business expense on schedule E). 

Good Morning Pedro,Welcome to BP, you came to the right place to expand your REI knowledge.Some quick pointers to get you started: Search any and all areas of interest on the BP search bar- Read relevant content from forums and blogs pertaining to the subject matter.Download BP's free e-book for beginners.Watch/listen to a few podcasts.Search for local REIA meetups in your surrounding areas- BK, Queens, L.I., Manhattan, etc.Attend meet-ups and network with new and experienced investors.This may all seem overwhelming in the beginning but keep in mind that the first 4 things I listed can be done from you cell phone or computer.

Basically it flows through to your regular taxable income if you do not hold the real estate in a business.If you rent real estate such as buildings, rooms or apartments, you normally report your rental income and expenses on Form 1040, Schedule E, Part I.

I've heard E few already but yes I intend to keep listening.

Compared to the SFH, the duplex will have one more complete kitchen $$, two separate utilites $, one more HVAC, one more water heater, etc.Now with that being said, building one (1) Duplex house is cheaper than building two smaller houses (each house equal in size to one unit of the Duplex (i,e. the duplex contains two, 2/1 1,000ft2 units and each small house is a 2/1 1,000ft2).The cost to build will vary with each area of the country, how large you are building, and the level of finish.  

@Bob E.  

@Bob E.