How to Hire a Reliable Exterior Cleaning Company (Without Getting Burned)

Every spring, hundreds of Kitchener-Waterloo homeowners discover that the exterior cleaning company they hired has no insurance, used the wrong cleaning method on their siding, or simply didn't show up. A few simple checks before you hire can save you from all of these situations.

Insurance: The Non-Negotiable First Check

Any company working on your property must carry liability insurance. This isn't optional. If an uninsured worker falls from a ladder on your property, you may be liable for their medical expenses. If they damage your siding, there's no mechanism for recovery.

What to request:

• Certificate of General Liability Insurance — minimum $1 million coverage, $2 million is standard for professional operations
• WSIB (Workplace Safety and Insurance Board) clearance certificate — confirms their workers are covered

A legitimate company provides both without hesitation. If a contractor makes excuses about why they don't have insurance, move on immediately.

Professional exterior cleaning companies carry full liability insurance and WSIB coverage as standard.

How to Evaluate Reviews

Online reviews tell a story — but you have to read them carefully:

• Look at the response pattern: Does the company respond to all reviews, including negative ones? Professional companies respond courteously to all feedback.
• Check the dates: A company with 50 five-star reviews all posted in the same month is suspicious. Organic review growth is gradual.
• Read the negative reviews: One-star reviews from obviously unreasonable customers are less concerning than recurring themes (never showed up, damaged property, doesn't answer phone).
• Check multiple platforms: Google, HomeStars, and Facebook reviews together give a more complete picture than any single platform.
• Verify the company actually exists: Search for their physical address, phone number, and owner's names — a legitimate company has a traceable footprint.

Getting and Comparing Quotes

Request at least 3 quotes for any significant exterior cleaning project. When comparing:

• Ensure all quotes are for exactly the same scope — comparing an exterior wash + gutter clean quote to an exterior-only quote tells you nothing
• Ask how they plan to clean each surface — a quote that doesn't specify "soft washing for siding" vs. "pressure washing for driveway" may result in the wrong method on the wrong surface
• Beware of quotes significantly below market rate — the cost of chemicals, equipment, insurance, and labour creates a floor below which no legitimate business can operate profitably
• A written quote should include: scope of work, specific surfaces included, cleaning method to be used, and timeline

"The cheapest quote often becomes the most expensive job once you account for damaged property and having to hire someone else to redo the work."

— D&D Home Services

Red Flags to Watch For

• No physical address or only a cell phone number
• Can't provide insurance certificate on request
• No reviews or all reviews are extremely recent
• Door-to-door soliciting (common with seasonal transient operations)
• Demands full payment before the job starts
• Can't clearly explain what method they'll use on your surfaces
• No written quote or contract
• Uses a pressure washer on roof shingles or vinyl siding (fundamental incompetence)

Questions That Reveal Quality

• "What cleaning method will you use on my vinyl siding?" (Correct answer: soft washing or low pressure — not high-pressure washing)
• "What concentration of sodium hypochlorite do you use on siding?" (Should be 1–3% for residential; anything higher is excessive)
• "Do you pre-wet my plants before applying cleaning solutions?" (Should be yes)
• "What pressure will you use on my asphalt shingle roof?" (Should be low — 100–200 PSI. If they say "we don't do roofs with a pressure washer," that's actually a good answer.)
• "Can I see your liability insurance certificate?" (Should be immediately available)

Protecting Yourself with a Written Agreement

For any job over $500, request a written agreement that includes:

• Specific services to be performed
• Materials and methods to be used
• Completion date or service window
• Total price and payment terms
• Satisfaction guarantee or re-service policy

Why Customers Choose D&D Home Services

Devon Moore, Operations Lead Co-Founder & Operations Lead — D&D Home Services

D&D Home Services is Kitchener-Waterloo's trusted exterior cleaning company. We've served hundreds of homeowners across Kitchener, Waterloo, Cambridge, and Guelph with professional, insured exterior services.