Ask most landlords what a vacancy costs and you’ll hear: “one month of rent, maybe two.”
That answer is usually too low. Mortgage, taxes, insurance, utilities, make-ready work, ads, screening, and your hours all keep ticking. The gap between “lost rent” and “true economic cost” is why retention and renewal strategy deserve a spreadsheet — not a gut call.
This guide stacks every major bucket, then gives you a live calculator so you can plug in your numbers.
Lost income, carrying costs, turnover, time value, annualized vacancy impact, rent-increase vs. turnover tradeoffs, preventable causes, faster re-lease tactics — and how PTI-style incentives and documentation support retention (features depend on program and landlord setup).
The vacancy cost calculator: your real number
True vacancy cost calculator
Enter your assumptions. Carrying costs scale with vacancy length; turnover items are one-time for the event.
Your property
Turnover (one-time)
Total true vacancy cost
—
Lost rent
—
Carrying costs
—
Turnover
—
Your time
—
Every cost bucket
The calculator totals four buckets. Here’s what belongs in each — and what landlords forget.
Lost rent
$1.2k–$4k+
Scales with days vacant. Obvious — but only part of the story.
Mortgage
Doesn’t pause
P&I keeps hitting while rent stops. Often the largest carrying line.
Taxes & insurance
Fixed monthly
Still due while empty — easy to omit from a “lost rent” napkin math.
Utilities
$40–$120/mo
Heat in winter, security lights, minimal water — depends on season and asset.
Make-ready
$250–$800+
Clean, paint touch-ups, carpet — happens every turnover.
Repairs
$200–$2k+
Deferred items often get cleared between tenants.
Marketing
$0–$400
Photos, boosts, signs — faster marketing usually costs less than extra vacancy days.
Screening
$80–$200
Hard costs plus the hours to show, review, and verify.
The cost most spreadsheets skip: your time
A turnover is rarely “a weekend.” Realistic hours include inspection, vendor coordination, listing prep, inquiries, showings, screening, and lease-up.
- Move-out + documentation: 1–2 hrs
- Cleaning / punch coordination: 1–2 hrs
- Repairs / contractor visits: 2–4 hrs
- Listing + photos: 1–2 hrs
- Inquiries + showings: 4–10+ hrs spread over weeks
- Screening + lease: 2–4 hrs
At $25–40/hr, 12–26 hours is $300–$1,000+ of opportunity cost — even if it never hits QuickBooks.
If you haven’t logged your hours, use the Landlord Hours Audit once — turnover weeks almost always look bigger in hindsight.
Annual impact: vacancy rate × true cost
One bad vacancy hurts. A chronic vacancy rate quietly taxes every door. Illustrative annual true-cost bands for a single $1,200/mo unit (methodology approximates carrying + turnover + modest time — not a substitute for your calculator above):
Annual true vacancy cost (illustrative)
$1,200/mo rent · one unit · rounded planning bands
High drift
$5,800+
~12%+ effective vacancy
~6 weeks empty / yr
Average
$3,100
~7–8%
~4 weeks empty / yr
Tight ops
$1,400
~3–4%
~2 weeks empty / yr
Across five doors, the gap between “high drift” and “tight ops” can be tens of thousands per year — the kind of money that swamps small rent bumps if you trigger churn.
Rent increases vs. turnover (with true vacancy in the denominator)
- 5% on $1,200 ≈ $720/year if the tenant stays.
- If the same increase tips a move-out and you eat a 60-day full-cost vacancy, one event can erase years of that incremental rent — model it with the calculator.
Good tenants have option value. Small, predictable renewals + great responsiveness usually beats “max rent, cold relationship” for the first several years of a tenancy — especially when turnover soft costs are counted.
Preventable vacancy (most is operational)
Life happens — job moves aren’t “your fault.” But a large share of churn is price, responsiveness, communication, and neighbor/conflict handling.
Common preventable drivers
- Renewal shocks vs. smooth, explained increases
- Slow maintenance (perceived neglect compounds)
- Ghosting tenants on status updates
- No positive reason to stay beyond “the lease hasn’t ended”
High-ROI retention moves
- 48-hour response standard (even if the fix is scheduled later)
- Annual 15-minute check-in
- Small renewal gesture (cleaning credit, minor upgrade)
- Structured incentives where your program supports them
Make “stay” the default path
PTI is built around documented operations + tenant-facing incentives so good behavior and good communication show up as systems — not vibes.
Re-run the calculator at 3% vs. 7% effective vacancy — that delta is the budget retention tools compete against.
See how PTI supports landlordsWhen vacancy happens: shorten duration
- List before empty where law and access allow — overlapping marketing compresses downtime.
- Price at market — “testing high” often buys expensive empty days.
- Photos that don’t look accidental — more inquiries, faster screening pool.
- Respond in hours, not days — speed filters for seriousness.
- Written criteria ready before you show — indecision extends vacancy.
Frequently asked questions
How much does a vacant rental unit cost per month?
More than missed rent: carrying costs keep going, turnover hits once, and time adds up. Use the calculator with your mortgage/tax/insurance and realistic turnover assumptions.
What is the average vacancy rate for rental properties?
Published averages vary. Many SFR operators plan near ~one month/year; great ops beat that. The important part is your actual trailing vacancy — track it.
Is it better to lower rent or accept a vacancy?
Often a modest concession beats a vacancy once full cost is modeled — especially with good payers and low drama.
How can landlords reduce vacancy rate?
Maintenance speed, communication, renewal planning, correct pricing, listing quality, fast response, clear screening, and structured retention incentives.
Empty days don’t come back
Protect cash flow with systems — retention, documentation, and tenant experience — alongside correct insurance and underwriting.
Join free as a landlord