@Nam Trang - here are a few things I like to examine:1)  Google street view. 

My primary reason for joining BiggerPockets is to learn more investing strategies and network with other investor in my area.Thanks,Nam

@Cailyn Aune  I can only go by my own experience that is over 4 decades.and Real estate tends to go in 10 year cycles at least in California.but when I think of each down turn it was for a completely different reasonmid 70's  end of viet nam warmid 80s was high interest and RTC89 was war in Iraq and Loma preita earthquakelate 2001 was a short live dot com bubble2008 the mother of all melt downsso here we are 8 years later .. low interest high employment NO liar loans.. 20 to 30% of all properties being sold in cash... land use regulations.. increasing population in areas that people actually want to live.will we melt down in 2 years I don't know but who knows what the catalyst will be since its never been the same thing twice.

Quote from @Nasil Nam: My husband and I are real estate investors - own 4 properties in Halifax & Dartmouth for the last 4 years.

@Nam TrangIt is pretty close to the house.

Nam,I recommend finding an accountant that specializes in real estate taxation over one that is local.

In terms of using the FHA loan, as @Nam Trang said, you can only have one FHA loan at a time, so you'd need to either refinance the first property into a conventional or use a conventional loan for the second home.

I was a broker in Jersey in the 70's for 10 yrs. so I've been through the Viet Nam war years when the VA and FHA went bankrupt, because the Gov wanted to make bullets instead of mortgages.

@Nam Trang We're on our second cleaning company and I'm pretty happy with them.

@Nam Trang What is your reason for creating the LLC?