So, there is no extra equity to pull out with a HELOC.

I believe a duplex is worth more to an investor, because when all things are equal between the duplex and the SFH, the duplex generates 2 streams of income, instead of one, that’s an extra door of income to cover partially for when the other is vacant.

There are just two many pieces of the puzzle that the only real answer is to understand how to evaluate a deal and have a system that is flexible and allows changes and updates throughout a rigorous due diligence process.

Another aspect that made the deal interesting was that it came with an extra lot, which I can parcel off at any time and recover the whole initial downpayment.

., short-term renting a property you rent from an investor), to build some extra cash flow while saving up for your next purchase.

I refinanced the property and combined the extra cash with a large personal loan and some savings to buy a package of 4 properties. 

They'd probably be thrilled to be paying $200 under market and you'd have an extra $5K a year in your pocket. 

Your lender may have a few extra fees in the fine print. 

That will be an extra $1500-$3000 in insurance premiums you will pay because of the claim.If your roof is $5000 to replace, and you have a $2500 deductible, you are actually could lay out more over the next few years. 

And those who do things right but also go the extra mile to meet your tax goals, make suggestions, and help you maximize your options.