Hello Kyle,There are lots of things to consider, and there are lots of different types of Zoning for residential.For example you could be zoned residential, but the minimum lot size could be 1 acre, and you are buying 1 acre, in that case you wouldn't need a developer, you would just need a builder.For example, lets say you have 5 acres and a perfect rectangle property, that has an existing street that runs the long ways of the property so you won't have to put in any streets, you will simply need to get with a surveyor, figure out your minimum lot widths from zoning, and file with the municipality to get your property subdivided into lots.Once you have subdivided lots, you can either sell the lots outright to a builder, the cleanest transaction.Option 2, you could try to partner with a builder so you can split the profits, most builder's will want you to guarantee the loan, and still charge a build fee before profit splits.Option3, you can hire the builder, obtain the financing, and keep all the profits.Option 4, you could do any combination of 1,2, and 3. 

Keep us posted!

What I mean is only work with a Banker or Loan officer who has several years of "Funding" commercial loans.

I put some numbers below into this Rent or Sell calculator.https://www.narpm.org/members/resources/rent-vs-sell-calculator/ESTIMATES ON ROI (15 year time frame)at 5% Appreciation would profit $100K if SELL nowat 6% Appreciation would have $3,500K more if KEEP and sell after 15 yearsat 7% Appreciation would profit 122K if KEEP and sell after 15 years(Assuming a conservative 6% ROI on money invested from sale.)NOTE: The property appreciated 10% in the last year so I’m thinking 7% over the next 10-15 is reasonable.DETAILSSale Value: $520,000 (Best guess)Paid: $437,000Original Mortgage: $415,000Mortgage Balance: $380,000Interest: 3.375%Monthly mortgage: $2,899Mortgage Difference: $1064Annual Taxes, Insurance, HOA etc**: $20,345**$13,865 (Non Homestead tax) $4,680 (HOA) $1,800 (Landlord Insurance)Monthly Rental Charge $3,500*Appreciation 7%Years to Hold: 15More assumptions used in ROI Estimates Above90% occupancy,15% capital gains charge6% selling feeRate of return on gains if selling now instead 6%Annual maintenance 1%Annual rent increase 4%$3,500 is slightly aggressive. unlikely I could get more.Thanks in advance for any constructive thoughts and comments!!!!

I'll keep this post short and sweet: We are currently buying two properties under 50K each, but total purchase price for both properties would be 80K.

Yes, unfortunately we don't have means to hire someone to finish fixing it up.

Any tips to keep my good relationship with the owner and not ruin it in the future because of this business?

Most PM companies have thin margins, meaning they don't produce a lot of profit.

By banking, I mean all your deposits and banking activity needs to now be done through the HELOC.

@Blake Yarbrough If you can structure the deal where you get the 80% financing with good terms and rate in place and it is a good deal meaning under contract with good terms, purchase price under market value and also being the asset and property manager.