A good baseline for most LA driveways
Once a year is the right rhythm for a typical driveway in full or partial sun with no big trees overhead and cars that do not leak. That is often enough to lift the gray film of tire dust, dirt and grime before it darkens the concrete, and it keeps small stains from becoming permanent ones.
Some driveways can go longer. A short driveway in full sun that rarely gets parked on can look fine for well over a year. Others need more attention. The rest of this guide is about figuring out which group yours falls into.
Cost is part of the decision too. As of October 2026, driveway cleaning is $0.50 per square foot with a $195 visit minimum, so a two-car driveway of 400 square feet is $200. Pairing it with a walkway or patio in the same visit earns a 5% bundle discount, which makes a yearly visit easier to justify.
Trees overhead change everything
Trees are the biggest reason a driveway needs cleaning more often. Leaves and seed pods release tannins when they get wet, leaving brown prints. Fruit and flowers drop sugary pulp. Jacaranda blooms in late spring leave purple and sticky residue, and sap drips through summer.
Shade from trees also keeps the concrete damp longer, which invites the dark organic film that shows up in tree-shaped shadows. If a large tree hangs over your driveway, plan on cleaning twice a year: once after the bloom or drop season, and once in fall before the rains.
Cars that drip and park in the same spot
A car with a slow oil, coolant or transmission leak leaves a new spot every night in exactly the same place. Fresh oil is far easier to lift than oil that has cooked into concrete for months. If you have a leaky vehicle, spot-treat drips with an absorbent and a degreaser as they appear, and plan on a full cleaning at least once a year.
Hot tire marks also build up where you turn the wheel while parked. They are easier to remove when they are newer.
Sun, shade and where you live
In the San Fernando Valley, summers are hot and dry. Concrete in full sun stays dry, so organic growth is rare, but the heat bakes oil and food stains into the surface faster. Valley driveways tend to need cleaning for stains and dust more than for mildew.
Near the coast, the marine layer keeps surfaces damp in the morning, especially in shaded spots. North-facing driveways, side-yard runs and driveways beside tall walls can grow a gray-green or black film that slowly darkens the slab. Those areas often need cleaning more often than the sunny parts of the same property.
Sprinklers matter wherever you live. LA water is hard, and sprinklers that overspray onto the driveway leave white mineral spots and keep the edges damp. Adjusting heads so they water the lawn instead of the concrete slows both mineral spotting and organic growth, and can stretch the time between cleanings noticeably.
Signs it is time
Look for the concrete getting darker overall, especially in tire lanes. Watch for spots that do not wash away with a hose, a slick feel underfoot in shaded areas, or a clear line where a doormat or a planter sat and protected the concrete. If the driveway looks noticeably darker than the sidewalk next to it, it is due.
Another simple test: pour a cup of water on a dirty area and on a clean spot. If the water darkens a grimy section to the same color as the rest, the grime is sitting on top and will come off with a proper cleaning.
Timing it around the seasons
Fall is a popular time. Cleaning before the rainy season, roughly November to March, clears oil and debris that would otherwise get pushed around or soaked deeper. Late spring, after the jacaranda bloom and pollen, is the other natural window. Santa Ana winds, which can blow from fall through spring, often coat everything in dust and leaves, so some people wait until a windy stretch passes before booking.
Between professional cleanings, sweeping weekly and spot-treating drips does a lot. Our guide on keeping your driveway clean longer covers the small habits that stretch the time between visits.
Key points
A good baseline for most LA driveways
Once a year is the right rhythm for a typical driveway in full or partial sun with no big trees overhead and cars that do not leak. That is often enough to lift the gray film of tire dust, dirt and grime before it darkens the concrete, and it keeps small stains from becoming permanent ones.
Trees overhead change everything
Trees are the biggest reason a driveway needs cleaning more often. Leaves and seed pods release tannins when they get wet, leaving brown prints. Fruit and flowers drop sugary pulp. Jacaranda blooms in late spring leave purple and sticky residue, and sap drips through summer.