pressure-washing

How Much Does Pressure Washing Cost in Boston, MA? (2026)

Pressure washing costs in Boston, MA for 2026: triple-decker, brick rowhouse, vinyl, and deck prices, historic district cautions, and the April to November season.

How Much Does Pressure Washing Cost in Boston, MA? (2026)

A vinyl colonial in Quincy, a wood triple-decker in Dorchester, and an 1860s brick rowhouse on a South End square all get dirty in the same Boston weather. They do not get cleaned the same way, and they do not cost the same to clean. That gap is why two neighbors can get quotes that differ by several hundred dollars for what looks like the same job.

As a rough guide, most Boston homeowners pay somewhere around $350 to $700 to wash the siding on a typical one or two story house. A full triple-decker usually lands closer to $650 to $1,300, and careful soft washing on historic brick can run higher than either. Decks, stoops, and driveways get priced on top of that.

The local season is short, too. Most crews work from about April to early November, and the calendar fills fast once the spring pollen shows up.

Typical Boston Pressure Washing Prices for 2026

The numbers below are approximate ranges for Boston and the close-in suburbs. They assume normal buildup of mildew, pollen, and city grime, not a building that hasn't been touched in twenty years or a job that includes paint prep.

Most companies also set a minimum of roughly $200 to $300 per visit. Parking, hauling hose up three flights of porches, and working around neighbors all take time, so a small single task often costs nearly as much as a bundled one.

Expect Boston quotes to run a bit higher than what friends in Worcester or the outer South Shore pay. Labor costs more here, crews lose time to narrow streets and resident parking, and older buildings need extra care around wood trim and single-pane windows.

Why Triple-Deckers Land at the Top of the Range

The triple-decker is the building that pushes Boston quotes up most often. The footprint is modest, but the top row of siding sits 30 feet or more above the sidewalk, and the porches stack three levels high in front and often in back.

Most crews soft wash these houses. A low-pressure pump sprays a diluted cleaning mix, lets it sit for a few minutes, and then rinses it off, which lets a technician reach the third floor from the ground with extension gear instead of setting a tall ladder on a tight lot with the neighbor's fence two feet away.

Those porches add real labor. Every level has decking, railings, and a ceiling that grows mildew, and the crew has to protect the doors and windows of whichever unit sits below while they rinse.

If you rent out units, give tenants notice a few days ahead. Windows need to be closed, porch furniture pulled inside, and cars moved, and a crew that stands around waiting on three households will bill for that time.

Brick Rowhouses in the South End and Back Bay

Most of the brick in the South End and Back Bay went up in the middle and late 1800s. It was laid with soft lime mortar, and the brick faces are softer than modern brick, so a pressure washer can blast out mortar joints and pit the surface in a single careless pass.

Good masonry cleaning here is slow and gentle. Experienced contractors keep the pressure low, pick a masonry-safe cleaner matched to the stain, and sometimes use a poultice or a second treatment instead of more force. Soot, biological growth, and white efflorescence each need a different product.

Check the Historic District Before Anyone Sprays

Both neighborhoods sit inside local historic districts overseen by the Boston Landmarks Commission and its district commissions. Exterior work on facades visible from the street can require review, and harsh chemical or abrasive masonry cleaning is exactly the kind of thing those commissions pay attention to.

Before you book a facade cleaning, call the district commission staff and describe the method the contractor plans to use. That call costs nothing, while repointing joints that a pressure wand chewed up can cost thousands.

Vinyl in Dorchester, Quincy, and Somerville

Vinyl is the easy case. Plenty of homes in Dorchester, Quincy, and Somerville were re-sided in vinyl over the past few decades, and vinyl comes clean quickly with a soft wash and a light rinse.

The usual problem is green or black growth on one wall. On tight lots in Somerville and parts of Dorchester, the house next door shades a side wall for most of the day, so it never fully dries and mildew comes back faster than on an open suburban lot.

A wash every one to two years keeps most vinyl looking right. Cleaning more often rarely pays off unless you are listing the house for sale or a tree hangs over the roof and drops sap.

Be wary of anyone who wants to hit vinyl with high pressure. It can force water behind the panels and into the wall cavity, and older vinyl that has gone brittle after years of Boston winters can crack along the laps.

Decks, Stoops, and Hardscape

Wood decks around Boston take a beating from wet springs, humid summers, and months of snow sitting on the boards. Bare pressure-treated pine turns gray and grows mildew within a couple of seasons.

A typical backyard deck cleaning runs about $250 to $600, with stairs, multiple levels, and heavy railing systems pushing it higher. Many homeowners pair it with a stain or sealer, and that is where the bill climbs into four figures.

Composite decking needs a lighter hand. Too much pressure scars the surface and can void the manufacturer's warranty, so a soft brush and the right cleaner often beat the wand.

Stoops deserve their own conversation with the contractor. Granite holds up fine, but brownstone is a soft sandstone that flakes and spalls under pressure, and a lot of older Boston steps and trim are brownstone.

When Boston Crews Can Work

The working season runs roughly April through early November. Once temperatures drop into the 30s and low 40s, cleaning mixes work more slowly, rinse water can freeze on walkways overnight, and wet wood won't dry before the next frost.

May and June are the crunch. Pollen coats everything in late spring, and homeowners who call in June can wait weeks for an open date.

September and October are the overlooked window. The air is drier, schedules loosen up, and getting mildew off before snow piles against the siding all winter is worth doing, although late October leaves little room to stain a deck and let it cure.

What Moves the Price Up or Down

Two Boston houses with the same square footage can price very differently. The contractor is looking at how hard the job is to reach and how much care the surface needs, more than raw size.

These are the factors that usually change a quote the most:

• Height and access, especially third floors, rear porches, and houses with no side yard
• Parking, including whether the crew needs a street occupancy permit or has to park a block away
• Surface type, since brick, brownstone, and old painted wood need slower methods than vinyl
• Condition, because heavy black mildew or years of soot takes more product and more passes
• Add-ons like decks, fences, walkways, and gutter faces bundled into one visit

Water access matters less than people expect. Most crews run off your outdoor spigot, so make sure it works and that the line isn't still shut off from last winter.

Hiring a Pressure Washing Company in Boston

Ask every company for proof of general liability insurance and workers' compensation coverage. A crew working three stories up next to your neighbor's windows needs both, and a certificate of insurance takes a company five minutes to send.

Massachusetts registers home improvement contractors for many residential jobs on owner-occupied homes, and deck staining can fall under that umbrella. Ask whether the company holds a registration, and confirm the details with the state's Office of Consumer Affairs if you are unsure.

Runoff is another fair question to ask. Cleaning chemicals and dirty wash water should not go into the storm drains, which empty toward the harbor and the Charles, so a good crew will explain how they contain or redirect it. When you compare bids, you can browse local pressure washing companies and read our other Boston home maintenance guides for related projects like roofs and gutters.

Frequently Asked Questions

Is soft washing the same as pressure washing?

No. Soft washing uses low pressure and a cleaning solution that does the work, while pressure washing relies on force. On a Boston triple-decker or brick facade, soft washing is usually the safer choice, and pressure is saved for concrete and driveways.

How much does it cost to wash just the front of a Back Bay rowhouse?

A single front facade usually runs around $500 to $1,200 depending on height, stain type, and whether bay windows and ironwork need hand detailing. Plan an extra week or two if the district commission needs to review the method first.

Can I pressure wash my own triple-decker?

You can wash the first floor and porches with a rented machine for about $80 to $120 a day. The upper stories are another matter, since standing on a ladder 25 feet up with a pressure wand is how people get hurt, so most owners hire out the top two floors.

How often should a Boston deck be cleaned and sealed?

Plan on cleaning every year and resealing every two to three years for most pressure-treated decks. South-facing decks in full sun often need stain sooner, while shaded decks under maples tend to need more frequent mildew cleaning.