I'm leveraging credit cards to pay for materials on my flips and was curious how that would work.

I’ve also had good luck with bank of the internet through Costco if you get a membership there before applying get the black card, it gets you $300 off. 

@Thomas Humke FHA allows for lower credit score, higher dti, and low down so thats what i utilized. i got my 1st credit card the minute i turned 18 to help pay for school expenses so by my junior year i had 3 almost 4 yrs of credit history and i held a almost full time (30-35 hr) internship/job. i actually didnt end up renting to college kids as the duplex i bought came with a tenant that is a family so i didnt have to worry about breaks. get a student card immediately to help build your credit if you dont have one yet.

Ever bought something on sale with a credit card?

If you're a blue-collar worker making $50,000 and carrying $20,000 in debt on cars and credit cards, a $7,000 roof can be devastating.It also depends on the number of units.

I am hesitant to open a credit card as there is an annual membership fee. 

. : Car insurance rate, cable bill, kids extra curricular activities, vacations, credit card bills, restaurant outings.

In case of an emergency, I can utilize 0 interest credit cards, short term loans etc. that would help keep me going until I am able to get back on track.

Funding the project wasn't an issue but I underestimated the cost of rehab so I had to get loans from credit card (0% interest for 15 months), it did drop my credit I hope that it will bounce back once I pay it off.

I am looking at starting a company with an initial investment of $50 and the option to deposit as much as you would like at anytime with no minimums and an option for debit/credit card linked account for round up automatic transfers.