The Hunterdon Scoop / Hire

Power washing companies in Hunterdon County

Cheap to buy, easy to botch: the wrong pressure eats cedar, mortar, and window seals.

Skip to all 33 businesses filed under Cleaning Services in the county directory ↓

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What it costs

Site-published estimate: one review aggregator citing local market data put a typical Flemington-area house wash around $409 and a driveway wash around $380, this is a single secondary source (not a government or trade-association figure), so treat it as a rough starting point for budgeting, not a quote.

Before you hire

  1. Ask for the NJ HIC registration number up front and check it yourself at njconsumeraffairs.gov/hic or newjersey.mylicense.com/verification, 'licensed and insured' on a website is a marketing claim, not proof.
  2. Get soft-wash vs. high-pressure specified in writing for siding, roofs, and stucco. High pressure on the wrong surface strips paint, drives water behind siding, and can void a roof shingle warranty, ask which method they'll use on which surface before they start.
  3. Confirm liability insurance coverage amount and ask for a certificate of insurance (COI) directly from the insurer, not just a claim on the site, runoff and chemical damage to landscaping or neighboring property is the most common power-washing dispute.
  4. Ask what detergents/chemicals they use and whether they're biodegradable, sodium hypochlorite (bleach-based) mixes are standard for algae/mildew but can kill plants and discolor grass if not rinsed and diluted correctly.
  5. Get a written scope covering exactly what's included (house, roof, deck, driveway, gutters are often sold separately) and whether they pre-treat organic stains vs. just rinse, a cheap quote that only covers a rinse will look worse two months later when mildew regrows.

Power washing on residential property in New Jersey falls under the state's Home Improvement Contractor (HIC) registration requirement (NJSA 56:8-136 et seq.), administered by the NJ Division of Consumer Affairs. It's a registration (proof of insurance, business info on file), not a trade license with an exam. Registration numbers follow the format 13VH##########. Check any contractor's number at the NJ Division of Consumer Affairs verification tool (njconsumeraffairs.gov/hic and newjersey.mylicense.com/verification) or by calling the NJ State Contractors Board at (609) 292-7899.

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The local picture

Plenty of locally based operators. Because this work sits under Home Improvement Contractor registration rather than a trade exam, the paper trail is thinner than for electricians or plumbers, so ask any company for its HIC number before booking.

Questions neighbors actually ask

Does a power washing company need to be licensed in New Jersey?

There's no separate 'power washing license.' Companies doing this work on homes for pay are supposed to carry a NJ Home Improvement Contractor (HIC) registration, the same registration required for most home-improvement trades, not a trade exam like electricians or plumbers have. It mainly confirms they're registered with the state and carry liability insurance. You can check any company's number for free at njconsumeraffairs.gov/hic.

What's the difference between power washing and soft washing, and does it matter which one I hire?

Power washing uses high-pressure water alone; soft washing uses low pressure plus a cleaning solution (usually a diluted bleach-based mix) to kill algae and mildew at the root. For house siding, roofs, and stucco, soft washing is the safer choice, high pressure can force water behind siding or strip roof granules. For concrete driveways and pavers, high pressure is normal and expected. A company that only offers one method for everything is a flag to ask more questions.

How often does a house in Hunterdon County actually need to be power washed?

Most local companies quote annual house washing as sufficient for typical NJ weather and tree cover, with driveways/concrete done as needed rather than yearly. If a company is pushing a twice-a-year contract for a standard single-family home with no unusual mold or algae problem, ask what's driving that recommendation before agreeing.

33 businesses filed under Cleaning Services in the county directory, A–Z

Everything filed under Cleaning Services in the county directory, alphabetically. It is a broad category, so it takes in neighboring lines of work as well as power washing companies. No ordering, no ranking, no picks.

Names, towns and numbers come from The Hunterdon Scoop business directory, pulled July 28, 2026. Want this list narrowed to your town? Browse Cleaning Services by town. A business appearing here is not a recommendation, and no business pays to be on it.

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