The Real Cost of Understaffing in Facility Operations
Every facility manager knows the feeling. You post a custodial or maintenance position and the position sits open for two months. You finally fill it, the new person takes eight weeks to get up to speed, and six months in they leave because the workload is crushing them. You post again. Repeat.
That is not a hiring problem. It is a staffing calibration problem, and the data shows it is costing you far more than a vacancy ever will.
The true cost of replacement
SHRM research puts the cost of replacing a single employee between 50 and 200 percent of their annual salary. For a $40,000 custodial position, that is anywhere from $20,000 to $80,000 in recruitment, onboarding, training, and lost productivity every time someone leaves.
Most facilities budget for the direct cost: job posting, recruiter fees, new hire training. What they miss are the indirect costs. The knowledge gap while the role is vacant. The experienced people covering extra shifts, which accelerates their own burnout. The extended time before the new hire is productive enough to take on a full workload. The institutional knowledge walking out the door with someone who spent five years learning your building.
If you have 20 people on a custodial or maintenance team, and your turnover is running at the national average, you are looking at 3 to 4 replacements a year. That is $60,000 to $320,000 in hidden replacement costs annually. Most of that is invisible in the budget line items because it is spread across productivity loss and overtime.
The staffing gap is real and widening
The numbers are stark. The U.S. Bureau of Labor Statistics projects 139,000 annual facility maintenance job openings through 2032. The pipeline of trained technicians from vocational and trade programs is shrinking. The average age of a building maintenance technician in North America is 47; 40% of the FM workforce is eligible for retirement within five years.
In the UK, 43% of facilities management organizations cannot fill skilled maintenance roles within 60 days of posting. In Australia, losing a single skilled HVAC technician costs an estimated $28,000 in recruitment, onboarding, and productivity loss before the replacement is fully productive.
This is not a problem you can hire your way out of. The talent is not there. The organizations that will win are the ones that stop losing the people they have.
Understaffing crashes your compliance and operations
Understaffing does not just affect cost. It affects execution. Organizations with fully staffed teams maintain a 91% preventive maintenance compliance rate. Understaffed teams average 54%. That gap is not administrative. It is the difference between catching a building system failure before it causes downtime and discovering it when the HVAC goes down during peak occupancy.
The same principle applies to safety documentation. When your team is understaffed and reactive, compliance becomes check-box work done under pressure. When your team is calibrated to your building, compliance becomes part of a sustainable workflow. Audits are easier to pass. Risk exposure shrinks.
Burnout is the underrated driver of turnover
Facilities Dive research found that 61% of FM organizations report technician burnout as the primary driver of unplanned turnover in 2025. Not pay. Not benefits. Burnout. Technicians overloaded with scope creep (HVAC, electrical, plumbing, BMS, compliance documentation on one person) are leaving at accelerating rates.
Younger technicians, particularly those under 35, cite inadequate digital tools as a reason for leaving an FM employer within 18 months. They expect mobile CMMS, work order visibility, and task clarity. They do not expect to get handed a clipboard and a verbal assignment.
Organizations that have fixed their staffing level and upgraded their tools are seeing dramatically different retention outcomes. It is not just about headcount. It is about whether people feel they have the tools to do the job competently.
What understaffing actually costs your building
Let us put this together. You have a 50,000 square foot facility with a 4-person custodial team. One person leaves. You run at 75% capacity for three months while recruiting and onboarding.
Direct replacement cost: $20,000 to $80,000.
But you also have:
- Overtime costs for the remaining team covering the gap: $8,000 to $12,000 over three months.
- Quality drop in cleaning and floor care, leading to earlier carpet replacement or increased maintenance calls: $3,000 to $5,000 in unplanned costs.
- One of your other custodians, burned out from the extra work, leaves six months later. Another $20,000 to $80,000 in replacement costs plus the same cascade.
- Your building satisfaction scores drop because cleaning standards slip. Tenant complaints increase. Leasing is affected.
The true cost of that one vacancy is not $40,000. It is the cascade.
Three things to do immediately
One. Run the numbers on your actual turnover rate over the last two years. What is your true replacement cost? Most teams have never done this calculation. Once you know, you can compare the cost of understaffing against the cost of adding one person to stabilize the team.
Two. Map your staffing model against APPA custodial guidelines. Are you running at 54% compliance because your team is undersized for your building, or for another reason? If it is staffing, know the gap.
Three. Ask your team directly: What would make this job sustainable? Often the answer is not more pay. It is better tools, fewer competing responsibilities, and enough people to do the work well. Fix those and your retention improves faster than you expect.
The data is clear. Understaffing does not save money. It costs it.
