Gross Potential Rent vs Effective Gross Income

Gross potential rent and effective gross income sound similar but tell completely different stories about a property.

Operators who only quote gross potential rent are showing you the dream. Effective gross income is the reality.

Gross Potential Rent Defined

Gross potential rent is the maximum revenue the property could generate if every unit was occupied at market rent for the entire period.

It is a theoretical number. It assumes zero vacancy, zero delinquency, zero concessions. Nobody achieves it in practice. But it is the ceiling that defines the asset's earning power.

Calculating GPR. Take the market rent for each unit. Multiply by 12 for the annual figure. Sum across all units. That is your gross potential rent.

Effective Gross Income Defined

Effective gross income is GPR minus vacancy loss and concessions, plus any other income.

Vacancy loss is the revenue not collected because units were empty. Concessions are revenue reduced because of promotional discounts. Other income includes laundry, parking, pet fees, application fees, and similar.

EGI is what the property actually brought in. It is the real top line.

The Gap Tells the Story

If GPR is 380 thousand and EGI is 340 thousand, the property is performing well. About 10 percent of theoretical revenue is lost to vacancy and concessions, which is normal.

If GPR is 380 thousand and EGI is 295 thousand, the property is struggling. About 22 percent of theoretical revenue is being lost. That is a vacancy or collections problem that needs investigation.

The percentage gap between GPR and EGI is one of the cleanest health metrics for a property.

Loss to Lease

Within the gap, there is a subcomponent called loss to lease. This is the difference between what units could rent for at market and what they are actually rented for under in-place leases.

If the average market rent for a two bedroom is 1175 dollars but the in-place tenants are paying 1050, you have 125 dollars of loss to lease per unit per month. That is upside that gets captured at renewal or turnover.

Loss to lease is normal in any building. Significant loss to lease that has not been pushed down over time tells you the prior operator was not actively managing rents.

Vacancy Loss

Physical vacancy is the percentage of units that are empty at a point in time. Vacancy loss is the revenue impact of those empty units over the period.

Vacancy loss is not just about days vacant. It also includes the lost revenue from any unit that was rented mid-month, where you did not capture the full month of rent.

Most underwriting assumes 5 to 7 percent vacancy loss for a stabilized property. Higher for repositioning deals. Lower for fully stabilized assets in tight markets.

Concessions

Concessions are promotional discounts to attract tenants. A month of free rent. Reduced security deposit. Waived application fees.

Heavy concessions show up in the EGI gap. They also show up in the offering memorandum if you read the fine print on the rent roll.

Properties leasing into a soft market often use concessions to maintain occupancy. The headline rents look strong but the effective rents are lower. This is one of the most common ways sellers obscure the real performance of an asset.

How to Use This

When evaluating a deal, calculate both GPR and EGI. Compare to the seller's stated numbers. If they only quote GPR, that is a yellow flag. If they quote EGI but the calculation does not match the rent roll and bank deposits, that is a red flag.

Your underwriting should always be built on EGI, not GPR. Anyone underwriting on GPR is going to miss their numbers.