How do I estimate rental income for a potential property?

Estimate rental income by comparing recently rented homes of similar size, condition, and amenities in the same neighborhood, then adjust from there. Actual rents being collected, not asking prices or estimates, are the ground truth. Look at comparable rentals that have recently been rented, and adjust for differences in size, condition, and features.

Your agent and local rental listings provide the data. The goal is a defensible number based on what the market is actually paying, not a hopeful figure.

Adjust the comparable rent for your property's differences: condition, updates, parking, outdoor space, and floor plan. A renovated unit commands more than a dated one, and parking or a yard adds value in most markets. A poorly located unit within a good area may rent for less.

Be honest about the adjustments. It is easy to convince yourself the property deserves the top of the range; the market will be the judge. Conservative adjustments protect your underwriting.

Build a vacancy and turnover allowance into the projection so the number is realistic from the first month. No rental is occupied 100 percent of the time. Between tenants, units sit empty, and turnovers bring costs: cleaning, painting, and sometimes lost rent while you market the unit.

Reduce the gross rent by a vacancy allowance, commonly a percentage of annual rent, and budget for turnover costs between tenants. A projection that ignores vacancy overstates the income you will actually collect.

Every neighborhood has a rent ceiling, the most that similar homes command, and your estimate should respect it. Renters compare options, and a unit priced above its comparables sits vacant. Overpricing a rental is as costly as overpricing a sale, because the vacancy eats the higher rent many times over.

Use the rent ceiling to set a competitive rent that attracts and keeps tenants. A slightly lower rent that keeps the unit full usually outperforms a higher rent that generates long vacancies.