The Real Cost of a Vacancy

Your tenant just gave notice, or worse, they moved out without one, and the unit is sitting empty. You're telling yourself it's fine, you'll have someone in there in a couple weeks. Most landlords underestimate what an empty unit actually costs, because they only count the rent they're not collecting and forget everything else running in the background while the lights are off.

Here's the real number. A vacancy doesn't just cost you the missed rent. It costs you the mortgage payment still due, the utilities you're now covering instead of the tenant, the turnover work to get it rent-ready, the marketing cost to find the next tenant, and the time value of however long the whole cycle actually takes, which is almost always longer than landlords plan for.

The Costs People Actually Count

Most landlords budget for one thing: the rent they lose for however many weeks the unit sits empty. On a $1,650 a month rental sitting empty for three weeks, that's roughly $1,155 in lost rent. That's real, but it's the smallest piece of the picture in most cases.

The Costs People Forget

The mortgage doesn't pause because the unit is empty. If your PITI payment is $1,050 a month, you're paying that whether or not anyone's living there, and unlike rent, it's not prorated by the day in your favor, it's just due.

Utilities often shift to you during a vacancy, especially electric and water, since you need the unit livable for showings and can't have the power shut off between tenants. Budget $80 to $150 a month depending on the property and season, more if you're running HVAC to keep the unit from developing moisture issues while it sits.

Turnover work is the piece that catches people off guard most. Even a tenant who left the place in decent shape usually needs a deep clean, a paint touch-up, carpet cleaning or replacement, and a full walkthrough to catch anything that needs repair before the next tenant moves in. On a modest unit, that's commonly $500 to $1,500. On a unit with real wear or damage, it climbs from there.

Marketing and screening cost time and sometimes money directly: professional photos, listing fees on certain platforms, and the hours spent responding to inquiries, scheduling showings, and running applications. Even done cheaply, that's real hours you're not spending finding your next deal.

The Cost Nobody Puts a Number On: Time

The biggest miscalculation isn't any single line item, it's how long the whole cycle actually takes. Landlords plan for two weeks and it becomes six. Turnover work takes longer than quoted, a contractor is booked out, or the first two applicants who look good on paper fall through screening. Every week beyond your original estimate is another week of the mortgage, utilities, and zero income stacking on top of each other.

A Worked Example

Take that same $1,650 a month rental with a $1,050 mortgage payment. The tenant moves out and it takes five weeks total to get a new tenant moved in, which is a realistic timeline once you count notice period gaps, turnover work, and screening, even though the plan going in was three weeks.

Lost rent for five weeks: roughly $1,900. Mortgage still due for that same period: roughly $1,210. Utilities covered during vacancy: $110. Turnover cleaning, paint touch-up, and minor repairs: $900. Marketing and screening costs: $150.

Total real cost of that vacancy: approximately $4,270. Not $1,900. More than double what the "lost rent" number alone suggested, and that's on a single, fairly ordinary turnover with no major damage and no eviction involved.

If that unit nets $300 a month in cash flow after all expenses when it's occupied, this one vacancy just erased more than a full year of profit on the property. That's the number that should drive how hard you work to prevent vacancies in the first place, not the smaller one that only counts missed rent.

What Actually Shortens a Vacancy

Start marketing before the tenant moves out, not after. If you have 30 days notice, use the first two weeks to line up showings with the current tenant's cooperation, so you're not starting from zero the day the unit goes empty.

Have your turnover contractor or handyman lined up in advance, not searched for after the walkthrough. A five-day gap waiting for a painter to have an opening is five days you didn't need to lose.

Price the rent accurately from day one. The single biggest driver of a long vacancy is overpricing the unit and then chasing the market down over several price drops, each one costing another week or two of lost showings while renters who saw the high price never came back to check again.

What People Get Wrong

The most common mistake is treating vacancy cost as a fixed, small number when budgeting a deal, instead of a real risk that scales with how long the unit actually sits. A pro forma that assumes 5 percent vacancy a year sounds reasonable until one bad turnover eats that entire year's cushion in five weeks.

The second mistake is rushing the turnover to save a week and placing a weaker tenant just to stop the bleeding. A rushed placement that leads to a problem tenant or another turnover in eight months costs far more than the extra week it would have taken to screen properly.

One Honest Limitation

You can't eliminate vacancy risk entirely, even with perfect systems. Tenants move for reasons that have nothing to do with your property or your process, jobs relocate, families grow, leases end at inconvenient times. What you can control is how fast you respond and how well you've budgeted for it before it happens, not whether it happens at all.

That budgeting has to happen before you buy the property, not after the first vacancy surprises you. Deal Machine runs realistic vacancy and turnover assumptions into the numbers on a rental before you close, so the cash flow you're counting on can actually survive the weeks a unit sits empty. You can find it at readmoneydecoded.com/deal-machine.

← All articles