How Much Do You Need to Borrow to Open a Rental Property?
A rental property loan typically runs $800,000 to $1,150,000, sized at roughly 70% of the purchase and closing cost. Revenue Map's rental-property presets model a default $945,000 mortgage at 7% over thirty years on an eight-unit building purchased for $1,350,000, with monthly debt service near $6,290 and about $420,000 of owner equity required upfront.
Rental property financing is the most standardized of any vertical in this tool. Lenders apply a 70% loan-to-cost ratio, a thirty-year amortization, and a 1.25 debt service coverage requirement, and those three numbers together determine how much you can borrow. The building's rent roll, not the owner's income, is the primary collateral, which is why a lender underwrites the property's operating income rather than the buyer's salary.
The owner's equity is the difference between purchase price and loan amount, plus closing costs and any initial unit-turn budget. On the default eight-unit preset, that gap is about $420,000, a larger absolute number than any other vertical here but a smaller percentage of the total project because the loan covers 70% and the underlying asset holds its value. Revenue Map deliberately does not model appreciation: the $420,000 must pay for itself from rental cash flow alone.
Cost Breakdown
Rental property loan sizing by type
| Item | Typical range | Notes | Source |
|---|---|---|---|
| Default mortgage (8-unit building) | $945,000 at 7% over 30 years | Covers 70% of a $1,350,000 purchase for an eight-unit residential building | Revenue Map model presets |
| Loan by property type | $800,000 to $1,150,000 | Short-term rentals $800,000, single family $875,000, default $945,000, commercial $1,050,000, mixed use $1,150,000 | Revenue Map industry presets |
| Monthly debt service (default) | About $6,290 | Principal and interest on $945,000 at 7% over 360 months | Revenue Map model presets |
| Owner equity required | $350,000 to $500,000 | 30% equity gap on purchase price plus closing costs and initial turns budget | Revenue Map model presets |
| Monthly operating costs | About $2,550 | Property management $1,100, insurance $750, utilities $450, marketing $250; no payroll on a small building | Revenue Map model presets |
| DSCR floor for lender approval | 1.25 or better | Net operating income must cover the mortgage payment with a 25% cushion | Revenue Map model templates |
Sources: Revenue Map model presets (default investment, pricing and funnel assumptions in our industry templates), Revenue Map model templates (vertical research in each financial model), Revenue Map benchmark tables (the thresholds behind our free calculators), and honest industry ranges where our own data is thin. Ranges are planning bands, not guarantees.
What Moves the Number
Loan-to-cost sets the equity bar
Lenders typically advance 70% of the purchase price for residential rental property, leaving 30% as owner equity. On a $1,350,000 eight-unit building, that is a $945,000 loan and roughly $405,000 of equity before closing costs. Mixed-use buildings at $1,650,000 push the equity requirement toward $500,000.
The rent roll underwrites the loan
Revenue Map's presets model eight units at $1,550 per month with 88% occupancy in phase one, producing roughly $10,900 of gross rent. After $2,550 of operating costs, net operating income is about $8,350, which must cover the $6,290 mortgage payment at a 1.25 DSCR. That leaves thin but positive cash flow from day one.
Thirty-year terms keep debt service manageable
Unlike gym or restaurant loans that amortize over ten years, residential rental mortgages run thirty years, which cuts monthly payments roughly in half for the same principal. That longer horizon is what makes rental properties cash-flow-positive despite the large loan amounts.
Vacancy is what breaks the coverage ratio
Revenue Map's presets model 88% occupancy at launch stabilizing to 94-95%. A single empty unit on an eight-unit building drops occupancy by 12.5 points and can push DSCR below the 1.25 floor. The four-month ramp in the presets reflects the reality that a newly purchased building may need turns before every unit is rent-ready.
Frequently Asked Questions
How much equity do you need to buy a rental property?
What interest rate do rental property loans carry?
How much cash flow does a rental property generate?
What DSCR do lenders require for rental property?
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