I don’t think you understand how to work your numbers. If you are starting with the 50% rule, then you allocate half of your rental income to ownership and rental overhead expenses. This leaves 50% of your rental income to ocver your debtr service. Anything left over is your before tax cash flow.
Using your numbers, with $1000 monthly rent, you have $500 to pay property taxes, insurance, advertising, leasing fees, repairs, maintenance, HOA, management fees, legal fees, utilities when not paid by tenant, vacancy allowance, and something to set aside for future replacements. Until you know firm numbers for all your costs, you are just guessing that your overhead will run 50% of rental income.
The other $500 has to cover your debt service. Again, using your numbers, $399.18 for your loan payment would leave you just $100.72. Since you are not putting at least 20% down, you will have PMI premiums each month which will add another $35 or so to your monthly debt service and further reducing your projected cash flow to about $65 per month.
That is $65 per month if nothing needs replacement. A new refrigerator could eat up a full year of cash flow. A $6500 HVAC replacement will take you almost nine years to break even.
With an HOA fee of $240 per month, coming off the top of your overhead, you have just $260 left to pay for everything else. I would expect your advertising, vacancy, property taxes, and insurance premium to run a bit higher than $260 per month. If so, then your cash flow gets even smaller.
If we assume that 50% of the rental incomewill cover your overhead, then you need look at the ratio of net operating income to debt service. In this example, your monthly net operating income is 50% of gross rent, or $500. You monthly debt service with PMI will be about $435. Dividing debt service into net operating income, you get a ratio of 1.15. For a property to support itself you really need this ratio to be at least 1.25.
I am guessing that the rent is too low, the price is too high, or a combination of both for you to really make this property cash flow comfortably. I would pass and look for a better deal. If you still want this property, you need to nail down the cost of your overhead. If $500 will cover the overhead, then try not to pay more than $30K.
BTW, all but one of my rental properties belong to an HOA or a COA. You just have to factor in those costs as part of your overhead when you do your cash flow analysis. Remember, you are not buying a rental property, you are buying a cash flow. The numbers have to work, or move on to the next deal.