How to vet a pressure washing company: licensing, insurance, and red flags

Most pressure washing companies do solid, honest work, but the ones that don’t leave a pattern behind: no-shows, vague pricing that turns into surprise charges, and jobs that get rushed or left unfinished. Knowing what to check before you hire, especially for a commercial property where the stakes and scope are bigger, filters out most of the risk before it becomes your problem.

Start with licensing and insurance

South Carolina doesn’t require a specific state trade license for pressure washing the way it does for licensed trades like electrical work, but every legitimate business should still carry general liability insurance, and most should have a standard business license for the county or city they operate in. For commercial properties specifically, property managers typically require proof of insurance before approving a contractor, and it’s reasonable for a homeowner to ask for the same thing.

Ask directly: “Can you send me proof of general liability insurance?” A company that produces this without hesitation is behaving normally. A company that deflects, gets defensive, or can’t answer clearly is telling you something too. That insurance is what typically covers repair costs if something goes wrong on the job; see our guide on who’s liable when pressure washing damages your property for how that plays out in practice.

Red flags worth taking seriously

A handful of patterns show up repeatedly in complaints about pressure washing companies, and they’re worth watching for during your first interactions, before you’ve committed to anything:

• Demands full payment upfront, especially in cash. A reasonable deposit on a large job is normal. Insisting on full payment before any work starts removes your recourse if something goes wrong.
• Vague or shifting pricing. A company that won’t give you a real number until after the job, or that adds unexplained charges once work is underway, is a common source of billing disputes.
• Repeated rescheduling or no-shows before the job even starts. If a company is unreliable during the sales process, that pattern often continues once they have your money.
• No clear answer about equipment or technique. A company that can’t explain whether they’ll soft wash your siding versus pressure wash it, or what chemical they’ll use near your landscaping, may not have the experience the job needs.
• Reluctance to walk the property first. A legitimate company generally wants to see the job before quoting a firm price, particularly for anything beyond a simple driveway.

What good communication looks like

Beyond the red flags, it helps to know what a well-run company typically does right, since this is easier to spot than the absence of a problem:

Good sign	Why it matters
Responds within a business day	Suggests active, organized scheduling
Gives a written estimate before starting	Protects both sides if there’s a dispute later
Explains their process (soft wash vs pressure, chemicals used)	Shows real experience with your surface type
Walks the property before quoting anything beyond a simple job	Reduces surprise charges once work begins
Willing to share proof of insurance without pushback	Confirms you have recourse if something goes wrong

Why this matters more for commercial jobs

A residential driveway wash is a low-stakes booking. A commercial contract, a strip mall facade, a restaurant entryway, a parking garage, involves more money, more foot traffic risk while the work is happening, and often a longer relationship if you’re setting up a recurring schedule. Property managers who require proof of insurance aren’t being overly cautious, they’re protecting the business from liability if a slip-and-fall or property damage claim comes up during or after the job. If you manage a commercial property, ask for references from other commercial accounts specifically, not just residential customers, since the two jobs require different equipment, scheduling around business hours, and experience with materials like stucco, EIFS, or metal awnings.

Questions to ask before you book

• Can you send proof of general liability insurance?
• Will this job use soft washing, pressure washing, or both, and why?
• What’s included in the quoted price, and what would count as extra?
• What happens if you find pre-existing damage during the walkthrough?
• How do you handle runoff near landscaping, storm drains, or shared property lines?

A company that answers all five clearly and without hedging is usually a safe bet. One that dodges two or three of them is worth a second look before you commit. Our pressure washing directory lists vetted providers across the Myrtle Beach area, and our methodology explains exactly how we score and rank the businesses listed, including signals around reliability and consistency.