Here are some steps and resources that may help you confirm your numbers and conduct due diligence:Rental Income Analysis: To determine the possible rental income for your duplex, look up the rental rates for nearby homes that are comparable to yours.

I think best way to determine rents are to compare asking rents and actual rents on the RMLS.

Even if you do have assets, and the cost is high, such as in NH where the transfer tax is cost prohibitive, he compares the possible benefits to the actual cost.He has an associate who does the actual return, and with whom he works closely. 

My challenge is that if I move out and rent my current home, I think I would realistically only be able to rent it for $1,700-$1,900 based on other comparable rentals in my area.

In order to make sure the estimated rental revenue is in line with local market circumstances, you should also investigate market rentals for comparable homes in the vicinity.To determine the duplex's condition, do a comprehensive inspection.

I’ve been wondering that same thing.Seems to me when comparing candidate investments, why would I pay more for an investment with risk and work (5% Cap multifamily), than a risk-free passive investment (5% CD or T-Bill).Note that going from a cap rate of 5% to 10% is a 50% drop in price…that’s significant…easy to see why a seller isn’t willing to give a higher return.I’ve asked the question before and gotten answers like it’s because investor borrowing costs vary, and you must consider future rent growth and appreciation … I guess if you have low borrowing costs and are optimistic about the future a 5% cap rate makes sense.

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

Here are some considerations:Pros of Using a Hard Money Lender:Speed: Compared to standard lenders, hard money lenders can provide quicker approval and financing processes, which lets you take advantage of time-sensitive possibilities.Flexibility: It may be simpler to obtain financing if HMLs are more accommodating when it comes to credit history and property condition standards.Access to Funds: You may take advantage of more investment opportunities by having quicker access to the equity in your property.Experience: For first-time investors in particular, certain hard money lenders offer invaluable experience and advice that can be helpful in navigating the fix and flip process.Cons of Using a Hard Money Lender:Greater Costs: Hard money loans might have interest rates and other costs that are greater than those associated with standard financing sources, which raises the project's total cost.Term Length: HMLs normally provide loan durations that are shorter, usually lasting between six months and a few years.

Have a look at an amortization schedule for a new house and subtract the principal payment from each moth when comparing it to your rent payment.

To get information and firsthand experience from investors who have used the BRRRR technique in comparable markets, think about contacting nearby real estate investors, going to networking functions, and participating in internet discussion boards.Furthermore, keep learning by watching videos, participating in forums, listening to podcasts, and reading books that are especially on the BRRRR technique.