In other words, would a mortgage company have a problem with me using a HELOC towards the down payment? 

While you’re already using a variety of online platforms, make sure your ads are optimized for the right audience.

I'm assuming Steven is also using a small dataset of Comps.

Since you'll be using a property management company, either way, buying the property base on profitability vs location might be the better option.

Perhaps instead consider using private money, doing the reno as quickly as possible, and then using a DSCR or conventional refi to pay off the private money.I tend to agree with @Drew Sygit and @Nathan Gesner that tapping the equity of your primary, especially with something variable and unpredictable like a HELOC, is not a good idea, but with one exception.

If you're not getting to that, then it's more of a LIRP (life insurance retirement plan), which has long term goals.There are a lot of companies that do well with "getting the money in" then screw up the end game with the loan provisions.If you want, I have a case study for using a policy for private lending to other people. 

I’m hoping to invest in a buy & hold property using a HELOC from my primary home as the down payment.

Also, Ive bought office supplies, went out to eat with contractors, and more, should I be using a business credit card? 

After signing we mentioned using a portable dishwasher and the PM said it wouldn't work because the outlets aren't grounded.  

You want to either read your closing disclosures because it will state if you "Can" or "Cannot" switch the title vesting to an LLC.If you want to transition your primary into an investment property I would recommend using a Portfolio or DSCR program by doing a simple refinance either cash out or simple rate and term for intended use.