My main goal is really accumulating units.

Have you accumulated a lot of weath so you can buy outright?

You should know that I'm very risk averse when it comes to debt accumulation.  

@Ned CareyIf taxes were accumulated wouldn't that be recorded on the city's tax site?

Work my 9-5, save money, knock out next the phase of the rehab as funds accumulate, and repeat until the project is finished.

Since all I can do during my capital accumulation phase is read and think about REI, I end up giving myself anxiety about imagining all the potential headaches that could occur.

Rented house that we originally purchased for much more money since it was newly remodeled, wife and I liked being landlords and we accumulated a good amount of savings.

I currently talking to a broker about his 4units MFH on the market and here are the specs for this deal:Rent Roll:4x $550      monthly returns:$2,200.00        yearly returns:$26,400.00 Income & Expense INCOMERental Income $26,400.00 Coin-op $1,200.00 Vacancy/ Credit Allowance 5% $1,320.00 Total Income $26,280.00 EXPENSES (Best guess and ests totals 5% min $200) - Management $2,400.00 - Utitlties: Water, Gas, Power $3,436.00 - Maintenance $1,320.00 - Insurance $2,000.00 - Includes Trash Property Tax $2,826.00 Total Expenses $11,982.00 NET OPERATING INCOME $14,298.00 RETURNS ANALYSIS- Capitalization Rate 7.15% - Project Cost $199,900.00 - Price Per SF $50.00 - Debt Amount $159,920.00  - Equity Required 20% $39,980.00 Net Operating Income $14,298.00 Debt Service $9,723.49Net Cash Flow $4,574.51Leveraged Return on Equity 11.44% $64,022 net worth accumulation Principal Payment - 1st Year $2,579.85 Return on Equity after Principal Payment 17.89% $64,022.38DSCR 1.4704591Year 1 $7,154.36 Year 2 $9,852.51 Year 3 $12,674.51  Year 4 $15,626.51  Year 5 $18,714.51  Debt Service Assumptions Interest Rate 4.50% Amortization 30 LTV Ratio 80%(Properties located in Wisconsin City Green Bay)  Take for a fact: I don't know the surrounding economy of the city at the moment and the area of this property.

Do you simply deposit them in a savings account to accumulate some interest?

@Duke Marquiss  . it really is satisfying to be able to help someone while accumulating assets.