pressure-washing

How Much Does Pressure Washing Cost in Dover, NH? (2026)

How much does pressure washing cost in Dover, NH in 2026? Expect $300 to $550 for a house wash, $150 to $275 for driveways, and $450 to $900 for a roof.

How Much Does Pressure Washing Cost in Dover, NH? (2026)

Pressure washing in Dover, NH costs about $300 to $550 for a standard house wash in 2026, $150 to $275 for a two-car driveway, $200 to $450 for a deck, and $450 to $900 for a roof soft wash. Those prices are typical for the Seacoast, where labor rates run above the New Hampshire average and the working season is compressed into roughly six months.

Dover's mix of older homes near downtown, 1980s and 1990s subdivisions off Route 108 and Sixth Street, and newer construction near the Portsmouth line means quotes swing more than the averages suggest. A 1900s Victorian on Silver Street with painted clapboard gets a different price and a different method than a vinyl-sided colonial in the Garrison Hill neighborhoods.

What Dover Homeowners Are Paying This Year

House washing is the most common job in Dover, and pricing runs $0.22 to $0.38 per square foot of living area as a rough rule. A 1,600 square foot ranch near Bellamy River lands around $300 to $400. A 2,400 square foot two-story colonial in the newer developments near Tolend Road runs $400 to $600, and three-story homes on the older streets can exceed $700.

Concrete and asphalt cleaning is priced by area. Driveways in Dover run $0.18 to $0.32 per square foot, so a typical 500 to 700 square foot driveway costs $125 to $225 as an add-on and $175 to $275 as a standalone job with the trip charge.

Decks are common here and cost $1.00 to $1.75 per square foot for a wash, with a brightener treatment adding $0.30 to $0.60 per square foot. A 250 square foot deck on a home near Hilton Park would come in at $250 to $440 for a wash and around $350 to $600 with brightener if you plan to stain afterward.

Roofs, Fences, and the Other Add-Ons

Roof soft washing in Dover typically runs $450 to $900 depending on pitch and size. The black streaks common on north-facing slopes throughout Strafford County come from an algae that feeds on the shingle, and a soft wash with a hypochlorite solution kills it without pressure.

Fences run $1.50 to $3.00 per linear foot, gutter face brightening adds $100 to $225 to a house wash, and window rinsing with spot-free water runs $3 to $6 per pane. Patios and walkways are usually bundled into the driveway rate.

Why the Seacoast Costs More Than Inland New Hampshire

The Seacoast labor market drives it. A pressure washing crew based in Dover competes for workers with Portsmouth, the Pease tradeport, and the shipyard, and technician wages of $22 to $30 an hour show up in the pricing. A company based in Rochester or Farmington may quote 10% to 15% less for the same Dover job, though travel fees can eat that difference.

The short season compounds it. Most Seacoast companies work from mid-April through early November, and the frost that returns to Dover by late October makes wet driveways and decks a hazard. A crew has about 28 working weeks to cover a year of truck payments, insurance, and equipment.

Housing age matters too. Dover's downtown and the streets off Central Avenue have hundreds of homes built before 1930 with cedar clapboard, old paint, and brick foundations that cannot take high pressure. Those homes are hand-washed at low pressure and take twice as long as a vinyl-sided house.

What Moves Your Quote Up or Down

Story height is the biggest single factor. Every floor above the first adds ladder time, and three-story homes near Woodman Park or along Portland Avenue commonly carry a 40% premium over a two-story house of the same square footage.

Condition is next. A house that was washed two years ago has a light film, while a house that has not been touched since it was built has heavy algae, spider webs in every corner, and oxidized siding that may need a special treatment. Companies price for the heavier job, and some charge a "first-time" surcharge of $50 to $150.

Site access rounds it out. Tight lots in the older neighborhoods, where the neighbor's house is 10 feet away and the side yard is fenced, slow the crew. So do heavy foundation plantings that need covering and steep driveways on the hills east of downtown.

Well Water and Rust

A fair number of Dover homes outside the city water district run on wells, and iron in the water leaves orange stains on siding and concrete near spigots and sprinkler heads. Rust removal needs a separate acid-based treatment that runs $75 to $200 depending on how many surfaces are affected, and standard washing will not touch it.

If the company plans to use your outdoor spigot, ask whether they bring their own water tank. A crew running on your well for three hours can draw it down.

The Best Times to Book in Dover

Late April through May is the crunch. Everyone wants the winter grime and road salt haze off before Memorial Day, and Dover-area companies are often booked two to three weeks out with no discounting.

September and early October are the value window. The summer algae is fully visible, so the wash shows a dramatic result, and most companies have calendar gaps after Labor Day. Fall discounts of 10% to 15% are common if you ask.

After mid-October, it is a gamble. Hypochlorite solutions lose effectiveness below 50 degrees, and a wet driveway on a 28-degree Dover night is a liability nobody wants.

How to Tell If a Dover Quote Is Fair

Get three written quotes that break the job into surfaces. Compare the method on each surface, not just the total, because a $325 house wash with high pressure on vinyl is a worse deal than a $425 soft wash that will not force water behind the panels.

Verify insurance. New Hampshire does not license pressure washers, so a general liability certificate with at least $1 million in coverage is your only recourse if a crew strips paint on a historic home on Locust Street or breaks a window. You can compare pressure washing companies serving the Dover area and ask each one for that certificate before scheduling.

Check for a re-clean guarantee. Established Seacoast companies often return within 30 days if algae reappears, which tells you they used a chemical kill rather than a rinse.

Watch the low bid closely. A $150 house wash in Dover is almost always a solo operator with a consumer-grade machine and no chemical, and the algae is back by August. For more on comparing home service quotes across New Hampshire, the home services blog has guides for every exterior trade.

Doing Part of It Yourself

Renting a pressure washer from a hardware store in Dover or Somersworth runs $75 to $125 a day, and for a flat driveway or a patio that is a reasonable way to save $150. The surface cleaner attachment, which rents separately for $25 to $40, is what keeps the result from looking striped.

Siding, roofs, and decks are a different matter. Consumer machines lack the low-pressure soft wash setup, so most homeowners end up using too much pressure on vinyl or clapboard and creating the exact damage a professional avoids. Ladder work on a two-story home adds fall risk that no $300 saving justifies.

A sensible split is to rent for the driveway every other year and hire out the house and roof. That keeps the professional visit to the surfaces where method matters most.

Frequently Asked Questions

How much does it cost to pressure wash a house in Dover, NH?

Most Dover homeowners pay $300 to $550 for a standard two-story house wash in 2026, with three-story Victorians near downtown running $600 to $800. Single-story ranches in the neighborhoods off Back River Road often come in at $275 to $375.

Do I need to pressure wash every year in New Hampshire?

Siding usually needs it every 18 to 24 months in the Seacoast climate, and driveways every two to three years. Homes under heavy tree cover near the Bellamy or Cocheco rivers may need siding washed annually because of shade and moisture.

Can pressure washing damage old clapboard homes in Dover?

Yes. High pressure strips paint, drives water into the wall, and can splinter old cedar. Homes built before 1940 should be soft washed only, and any company that proposes high pressure on painted wood should be crossed off the list.

Is roof cleaning worth it on a Dover home?

If the roof has black streaking and more than five years of life left, a $450 to $900 soft wash extends shingle life and removes the algae eating the limestone filler. If replacement is coming within a few years, put the money toward the new roof instead.

What is the difference between soft washing and pressure washing?

Soft washing uses low pressure, around 100 to 300 PSI, with a cleaning solution that kills algae and mildew, and it is the correct method for siding, roofs, and painted surfaces. Pressure washing uses 2,500 to 4,000 PSI and belongs on concrete, pavers, and some stone.