Fort Bend County · Houston metro
Concrete Patio Cleaning Cost in Katy, TX
Local pricing and Gulf Coast cleaning advice for Katy, Fort Bend County.
The city of Katy proper is more compact than many assume, even though the wider Katy area sprawls well beyond it. It sits in Fort Bend County, a community of established homes with patios, pergolas, and driveways that owners genuinely want to keep looking sharp. Backyard living is part of the draw here, and that means a lot of concrete on display.
What gets in the way is the Gulf Coast air. Humidity this high feeds a steady film of green algae and black mildew on concrete, and it doesn't take a flood to start it; ordinary damp shade is enough. North-facing slabs, areas under patio covers, and concrete near downspouts darken first and stay that way because the moisture rarely lets up long enough for them to dry out and recover.
Homeowners over in Fulshear, Richmond, and Rosenberg fight the same battle with their outdoor concrete. The practical answer is to clean and then seal, since a bare wash lets the algae creep back within months around here. Request a quote and we route it to one vetted local cleaner, never selling your details to a crowd of competitors.
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Estimated range
$150 – $208
For 300 sq ft in Katy. A real quote from a vetted local pro is free.
Why patios in Katy get dirty fast
The Gulf Coast humidity problem
A Katy patio rarely dries out fully. With Fort Bend County buried in Gulf humidity most of the year, green algae and black mildew settle into the slab — worst in the shade, under furniture, and along the downspout line.
The year-round damp means a patio that looks clean in spring is green again by midsummer, with tannin and rust layered on top. A clean-and-seal holds up where a bare wash fails, and homeowners in Fulshear run into the very same cycle.
Clean, then seal
Make the clean last in Katy
A bare wash looks great for a few weeks, but in this humidity the algae creeps back fast. Adding a seal after cleaning slows regrowth and keeps the slab brighter for far longer. You can add sealing to your estimate above to see how it changes the range.
Common questions
Patio cleaning in Katy, TX
How much should I expect to pay for patio cleaning in Katy?+
Most Katy patio jobs come in between $155 and $410, with size and buildup being the main factors. A modest covered patio sits lower; a large driveway or pool surround runs higher. If you add a sealer, plan for an extra charge, but it's usually worth it for how much longer the concrete stays clean afterward.
What time of year is best to clean a patio in Katy?+
Aim for the cooler stretch from November into early spring. Katy's humidity stays elevated most of the year, but those months bring slightly drier air that helps a sealer set up properly. If mildew has already taken over a slab, don't hold off for the calendar, since waiting just lets it dig in deeper.
DIY pressure washing or hire a pro in Katy?+
Renting a machine works for light surface dirt, but the pressure can carve into concrete and the algae returns quickly because washing alone doesn't kill it. In Katy's climate that means green again within a season. A pro treats the growth at the root and can seal the slab, which is what keeps it clean far longer than a rinse.
How often do Katy patios need to be cleaned?+
Once a year handles most open, sunny patios in Katy, while shaded slabs and concrete under covers or near trees usually want twice-yearly cleaning. The ever-present humidity keeps algae active across all four seasons, so damp, low-light areas always green up first. Sealing after each clean is the simplest way to lengthen the gap between services.
Does new construction in Katy affect patio cleaning?+
It can. Many Katy homes are newer, and fresh concrete needs to cure fully, typically a month or more, before sealing. Newer slabs also haven't built up years of staining, so an early cleaning and seal sets them up to resist algae from the start. For existing concrete, a deep clean first restores it before any sealer goes down.
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