Setting aside any personal biases towards the product the only people who negatively impacted by the industry (from a RE perspective) are traditional tenants competing for industrial space who are repeatedly priced out of space.

Traditionally the seller pays the commission. 

. - The financing depends if you are going with traditional (fannie mae backed) non owner occupied financing or portfolio/commercial financing.

I don’t have 20% to put down, so I can’t obtain a traditional or investment loan.

We are looking at new construction in my town, which has an extremely strong market, with these numbers on a 1600 sf two story, 3 bed/2.5 bath, traditional style (Ross Chapin Pocket Neighborhood/Goodfit plans or similar, if you are familiar with that architect). $60,000 lot$200,000 construction cost$450,000 sales price We could do a few single infill projects like this, or I have a few off-market parcels that I'd like to secure with 4-8 lots. 

Shouldn't affect your traditional lines of credit to do more deals with.

@Christian MarianecciYou mentioned that you acquired the property a couple years ago. considering the fact that you mention you have a tenant in place with a lease to expire sometime in 2019.

After that I hope to have enough money saved and built up through cash flow to start buying through either private money or traditional 80/20 mortgages.

I have $50,000.00 to invest and I found $70000.00 patio home. so I decided to buy with 20%down and get the traditional mortgage but quickly realized that I have to pay roughly $3500.00 load processing fee to get the either 15yr or 30yr loan. question #1 should I use HELOC(which processing fee is in 7 to 800ish) from my home to pay the rest 80% and try to pay off as fast as I can or just get the traditional loan and utilize the tax benefits?

Coming from the Midwest with a relatively low-paying job I wouldn't have enough cash to invest using traditional methods.