The lowest bid is rarely the best value. Use this five-point framework to separate professional cleaning companies from bid-chasers before you sign. For each criterion you'll see why it matters, what a strong answer looks like, and the red flag to watch for — the same diligence a seasoned facility manager runs on every proposal.
Get 3 Vetted Quotes in 24 HoursA single uninsured incident on your property can cost more than years of cleaning. This is non-negotiable.
Green flag
Names your business as additional insured on a current COI, $1M+ general liability, workers' comp, and a janitorial bond.
Red flag
"We're fully insured" with no certificate, or a policy that can't add you as additional insured.
1099 crews shift liability, turnover, and quality risk onto you and often signal payroll-tax corner-cutting.
Green flag
Cleaners are W-2 employees, background-checked, and trained by the company.
Red flag
Workers are 1099 subcontractors or the model is vague — a common source of lowball bids.
Recognized programs prove processes exist beyond a single supervisor's memory.
Green flag
CIMS (ISSA) certification, OSHA-trained staff, and documented, industry-appropriate procedures (e.g. EPA/CDC for medical).
Red flag
No named standards; quality depends entirely on which crew shows up.
Undefined scope is where disputes and 'that's not included' surprises live.
Green flag
A written, task-by-task SOW with frequencies, plus a documented QA process (inspections, logs, escalation).
Red flag
A flat monthly price with no task list or inspection process.
Comparable, contactable references are the best predictor of your experience.
Green flag
Reachable references for buildings like yours, tenure with clients, and stable supervision.
Red flag
No references in your facility type, or only brand-new accounts.
Research Confidence
Moderate
Based on
Synthesized from 10 cited sources.
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