The 5 Numbers Every Rental Owner Should Review Monthly

Most rental owners fall into one of two camps: they drown in reports they never read, or they run on gut feel and bank balance. Both are expensive habits. The middle ground is a short monthly review built around five numbers. If these five are healthy, the business is healthy. If one of them moves the wrong way, you know exactly where to look.

Economic occupancy

Not physical occupancy — economic occupancy. Physical occupancy tells you how many units are filled. Economic occupancy tells you how much of your potential rent you actually collected. A property can be 100% occupied and still bleed money through delinquency, concessions, and bad debt.

What good looks like: consistently above 95%. If it dips, the cause is in your collections process, your screening, or your rent pricing — and each has a different fix.

Delinquency rate

The percentage of rent owed that wasn't paid on time. This is your earliest warning system. A rising delinquency rate almost always shows up months before it becomes a vacancy or eviction problem.

What good looks like: under 3% of scheduled rent past due beyond any grace period. Above 5%, treat it as urgent — review every delinquent ledger line by line.

Maintenance cost per unit

Total maintenance spend divided by unit count, tracked monthly and as a rolling 12-month average. This single number reveals deferred maintenance catching up with you, vendor pricing drift, and properties that are quietly becoming money pits.

What good looks like: it depends on asset age and class, but the trend matters more than the level. A steady climb over three months means something structural is happening — aging systems, a vendor problem, or inspection discipline slipping.

Turnover cost and days vacant

Every turnover has two costs: the make-ready spend and the rent lost while the unit sits empty. Track both, per turnover. Most owners underestimate this number by half, which is why they underinvest in retention.

What good looks like: turns completed in under 14 days and total turnover cost — lost rent plus make-ready — trending down year over year. If a single turnover costs you two months of rent, your renewal strategy needs work.

Net operating income trend

Income minus operating expenses, before debt service. Track it monthly and compare against the same month last year, not just last month — seasonality will fool you otherwise. NOI is the number your property's value is ultimately built on.

What good looks like: stable or growing year over year. A declining NOI with stable occupancy means your expenses are eating you — go back to numbers two, three, and four to find where.

Make it a habit

Put thirty minutes on the calendar for the same day each month. Pull the five numbers, compare each to last month and the same month last year, and write down one action for anything moving the wrong way. That's it. Owners who do this consistently catch problems when they're small — which is when they're cheap.

If you'd like help setting up this review for your own portfolio — or you suspect the numbers will tell an uncomfortable story — start the conversation.