Portland Concrete Cleaning: the Sidewalk, Drive and Parking Strip City Code Makes Yours
Concrete cleaning in Portland costs $300 to $500 when every slab on the lot shares one visit. The $299 band covers a two-car drive with nothing else on the list. City code makes the sidewalk, driveway and parking strip along your street yours to maintain. The written quote prices that street side as carefully as the house side.
Sources read on 13 October 2026: city code, two transportation bureau guides, an OSU Extension note and NOAA normals.
How much does concrete cleaning in Portland cost for a whole lot?
Every paved surface on one Portland lot costs $300 to $500 from a single setup. A two-car slab by itself costs $299, including the apron. Between the two, $299 to $350 covers a smaller set: the drive, its walks and one patio. Those bands match the Corvallis pages, so no metro surcharge sits on top.
| Job | Price | What moves the figure |
|---|---|---|
| Two-car driveway on its own | $299 | Oil marks and the length of the apron |
| Drive, walks and patio together | $299 to $350 | Mostly how many separate slabs need a setup |
| Every paved surface, one setup | $300 to $500 | Steps and the street walk |
| Green film or moss on any slab | $299 to $500 | Share of the paving under growth |
Moss or green film on any panel sits outside the three slab bands, on a line of its own. If you add a house wash, roof or gutters, the bundle discount takes 10% to 25% off. The Oregon cost guide carries the rest of the price list, from gutters to roofs.
Which Portland concrete is yours to look after under city code?
The sidewalk, the driveway and the parking strip along your street fall to you under Portland City Code 17.28.020. The city maintains curbs, except one in combination with the sidewalk, willfully damaged or damaged by tree roots. The code names construction, reconstruction, maintenance and repair together, so a clean walk covers only part of the duty.
| Frontage piece | Who keeps it | Note for a cleaning visit |
|---|---|---|
| Sidewalk | The owner | Repairs need a permit, and a notice allows 60 days |
| Driveway | The owner | Oil marks get degreaser time before the wash |
| Parking strip | The owner | If it holds paving, that paving joins the quote |
| Curb | The city, with code exceptions | Combined with the sidewalk, or damaged willfully or by tree roots, it falls to the owner |
Read section 17.28.020 of the city code for the exact wording, curb exceptions included.
What does a concrete visit include, from porch steps to the parking strip?
A dry sweep, degreaser on oil marks and a cold-water wash at high pressure across sound concrete. Moss and algae film take a soft wash, at low pressure with a cleaning solution. Steps, porch slabs, walks, the drive and a concrete patio can share one visit, while each keeps its own line.
On the concrete
- Sweep: grit, needles and loose leaves come off dry before any hose runs.
- Oil: the wash waits on each mark until degreaser has had time to loosen it.
- Open slabs: cold water at high pressure works across sound walks, steps and the drive.
- Growth: shaded panels with moss or green film get the soft wash instead of pressure.
- Edges and risers: the wash covers step faces, slab edges and the joints between panels.
Around the concrete
- Beds and shrubs: planting that borders a slab gets a cover while degreaser is in use close by.
- Furniture: the crew moves chairs and planters off each slab and returns them after the rinse.
- Photos: every slab appears twice in the photo set, before the wash and after it.
Concrete cleaning in Portland stops at the slab, so glass, siding and roofs sit on other pages. Siding has its own Portland house washing page, while the Portland pressure washing page covers the rest. Paver and flagstone patios have a patio page of their own.
Why do walks under street trees turn green first?
Shade and damp explain it, according to OSU Extension, which calls moss a shade-loving plant that does poorly in sun. The same note says moss thrives in moist conditions. A walk under a street canopy suits moss far better than an open slab does. The walk-round notes every shaded panel separately.
Leaves join the picture each autumn. Portland runs Leaf Day in set zones, and the 2026 season lasts from November 9 until December 21. Residents in a zone rake loose leaves into the street one day before their pickup. The city asks for one foot of space between each pile and the curb, so runoff and sweepers can pass.
The OSU note suggests trimming plants along paved edges, so less shade falls there. Because pruning falls outside a concrete visit, it belongs to you or a gardener.
What happens when a Portland sidewalk panel lifts or cracks?
If a sidewalk repair notice arrives, Portland City Code gives the owner 60 days to make the repair. The city guide names three half-inch triggers: a vertical step, a crack or gap, and chipped depth. Repair requires a permit, but no wash changes those measurements.
A clean slab is not the same as a sound slab. A wash cleans the surface, but it leaves a lifted edge exactly where it was. Before you call anyone, measure any suspect panel against the half-inch marks in the notice guide.
If a notice has already arrived, the repair comes first. A wash can follow across new and old panels alike, priced like any other slab.
How wet is a Portland year at the airport station, month by month?
According to 1991 to 2020 NOAA normals, Portland International Airport averages 36.92 inches of rain a year. Measurable rain falls on 157 days, while nights at or below freezing number 31.7. July and August bring 1.05 inches between them, whereas November to January supply 16.25 inches.
Month by month, October to March
- October: 3.42 inches over 13.5 wet days, with frost on only 0.4 nights.
- November: 5.45 inches across 18.3 wet days, and 4.1 nights reach freezing.
- December, the wettest month: 5.77 inches, 19.2 wet days and 8.4 frost nights.
- January: 5.03 inches and 18.7 wet days, plus the most frost of the year at 8.7 nights.
- February: 3.68 inches over 15.7 wet days, while frost still comes on 7.2 nights.
- March: 3.97 inches on 17.8 wet days, though frost falls back to 2.6 nights.
NOAA counts a day as wet at 0.01 inch, and a night as frosty at 32 degrees F or below. November and December, the two wettest months on this record, also hold Leaf Day. These are airport readings, not a forecast for any one street. The full file sits in the NOAA normals for the airport.
How does a Portland concrete visit run, step by step?
A Portland visit runs in five steps, and photos or a walk-round come before any water. The crew then sweeps each slab, covers the beds, spots degreaser and washes. The invoice matches the written figure, because the price locks once you accept it.
Photos or a walk-round
Clear photos can price the job, while a large lot gets a walk-round first.
Hold a route day
Portland addresses join a scheduled route, so book early.
Sweep and cover
The crew sweeps every slab dry and covers the beds that border it.
Degrease and wash
Each oil mark soaks in degreaser before cold water at high pressure goes over the open slabs.
Rinse and photograph
A last rinse clears the residue, and the crew photographs each surface.
Who should book concrete cleaning, and who should call another trade?
Book it when sound concrete looks dirty, green or oil-marked, from porch steps to the street walk. Call another trade for lifted panels, cracks past half an inch, crumbling steps or a sealer. GreenTree does not repair or seal concrete, so those jobs go to a concrete contractor.
It suits:
- Owners readying a house for sale who want each slab priced before they list.
- Rental owners who want the $2 million liability certificate in hand before work starts.
- Lots under street trees, because shaded panels there often carry green film.
- Anyone booking a house wash or roof clean as well, since bundles take 10% to 25% off.
It does not suit:
- A sidewalk repair notice, since that needs a permit and a concrete contractor.
- A sealer or coating on the drive, walks or steps, because GreenTree applies neither to concrete.
- Tree work such as pruning or root cutting, which sits outside a concrete visit.
- Jobs that cannot wait until the next Portland route day.
Which eight things does the free quote check before a figure?
Surface, condition, area, oil, growth, frontage, water and access set the written figure. Before any figure, photos or the walk-round show which slabs are sound and which carry oil or shade. The tap, the parking and any paved parking strip go on the notes as well.
- Surface: stamped and exposed aggregate work get their own pressure setting.
- Condition: cracks, lifted edges and flaking go on the notes before any number does.
- Area: the crew measures every slab, the top step and the street walk among them.
- Oil and rust: old marks may only fade, and the quote says so in writing.
- Growth and shade: panels under a canopy often carry green film, so they take the soft wash.
- Frontage: the street walk and any paved strip, each priced on a line of its own.
- Water: a working outdoor tap, because every hose starts there.
- Access and parking: room for the truck near the work, while cars stay off the drive.
The Oregon sidewalk page covers frontage work alone, while the concrete hub covers every city.
Portland concrete cleaning questions: the frontage, Leaf Day, notices and booking
Can concrete cleaning in Portland include the public sidewalk and the parking strip?
Yes, if you want them on the quote, each on its own line. A parking strip joins only where it holds concrete or pavers. The crew leaves any grass or planting on the strip as it is. On the public walk, moss or algae calls for the soft wash, and the quote prices it separately.
Can a wash clear a Portland sidewalk repair notice?
No. A notice concerns half-inch steps, cracks and chipped depth, and only a repair changes those. Portland requires a permit for sidewalk repair and allows 60 days after a notice. Any wash belongs after the new panels. Measure the worst panel first, since the city guide draws the hazard line at half an inch.
Does Leaf Day clean the sidewalk in front of a Portland house?
No. Leaf Day crews sweep the street, and pickup costs nothing inside a Leaf Zone, with no sign-up. Only loose tree leaves belong in the pile, never twigs, branches or grass clippings. Pine and fir needles from evergreen street trees are fine, the city adds. PBOT hauls the leaves to its Sunderland Yard for composting.
Does a Portland concrete clean cost more than one in the valley?
No. GreenTree charges no metro surcharge, so the Corvallis bands hold in Portland. The two-car drive band stays $299, and the one-setup band for every slab stays $300 to $500. When a house wash joins, the 10% to 25% bundle discount covers concrete cleaning in Portland too.
Will old oil marks come out of a drive completely?
A recent drip can lift fully, but oil that has sat for years usually only fades. Old rust spots follow the same pattern. The written quote flags each mark that may stay faint, so nothing in the after photos comes as a surprise.
How far ahead should I book Portland concrete cleaning, and how long does it take?
Book early, since Portland work runs on set route days. Walks, steps, the street sidewalk and a patio lengthen the day. Send clear photos with the request, since photos price many Portland jobs.
Price the street side as well as the house side in one written quote.
Send photos or book a walk-round, and pick a route day.
Sources: Portland City Code 17.28.020 on sidewalks and curbs. PBOT sidewalk repair notices. PBOT Leaf Day 2026. Moss on pavement, an OSU Extension answer. Portland airport station file from NOAA, monthly values. Oregon business registry search.