Integrity Pro Washers Team
Professional pressure washing and soft washing specialists serving San Diego County.
Last updated: 2026-06-08
What pressure washing a University Heights driveway costs
Pressure washing a single-car University Heights driveway typically runs $180 to $280. Two-car driveways run $250 to $400, and the older 1920s aggregate concrete on streets like Howard, Cleveland, and Park takes 30% longer than newer pours. We wash 8 to 12 of these driveways a week through spring.
Last updated: June 2026
May was busy. We pressure washed 12 University Heights driveways between Park Boulevard and Texas Street. Three of them had not been cleaned in over a decade. Two were brand new pours from 2023 remodels. The rest were typical 1920s and 1930s mix.
Old concrete behaves differently than new concrete. That changed how we set up each job.
What the 1920s concrete told us
The original University Heights concrete uses river-rock aggregate. You can see the round stones once the surface paste wears off. By 2026 most of these driveways have lost 1/16 to 1/8 inch of the top paste layer to a century of foot traffic, brake fluid, and sun.
That exposed aggregate is what slows us down. A standard 25-degree fan tip at 3,000 PSI will pop loose stones out of the matrix on driveways like these. We dropped to a 40-degree tip and reduced surface cleaner speed by about 30%.
One driveway on Cleveland Avenue had so much exposed aggregate that we switched to a soft surface treatment with sodium hypochlorite at 1% for the algae and a gentle rinse. Pressure washing would have stripped more rock out of the surface.
How algae shows up on north-facing driveways
Eight of the 12 driveways had heavy black algae on the north and west edges. University Heights has a mature tree canopy. Magnolias and jacarandas on Madison Avenue shade driveways from 11 AM until late afternoon. That is algae weather.
Algae grows in the concrete pores, not on top. Pressure washing alone hits about 70% of it. The roots stay behind and regrow within 4 to 6 months. We treat with sodium hypochlorite before the pressure pass to kill it at the root.
What the new concrete needed
Two driveways were poured in 2023 during full lot remodels. Smoother surface, tighter pores, less algae. Different problem: tire marks from EV chargers parked in the same spot every night.
Rubber transfer from tires bonds with curing concrete during the first two years. We use a degreaser pre-treatment with a 10-minute dwell, then hit the marks with a 0-degree tip at close range. Skipping the degreaser leaves a shadow.
Pricing across the 12 May jobs
| Driveway type | Square footage | Time on site | Cost |
|---|---|---|---|
| 1920s aggregate, single car | 250 to 320 sq ft | 1.5 to 2 hours | $200 to $260 |
| 1920s aggregate, two car | 420 to 580 sq ft | 2.5 to 3.5 hours | $300 to $400 |
| Modern smooth pour | 400 to 550 sq ft | 1 to 1.5 hours | $180 to $250 |
| Stamped or sealed | 450 to 600 sq ft | 2 to 3 hours | $280 to $380 |
Why we do not seal University Heights driveways after washing
We get asked a lot. Sealing old aggregate concrete traps moisture in the pores. San Diego summers push internal concrete temperatures past 130 degrees on west-facing slabs. Sealed concrete then steams from inside out. That is how spalling starts.
If the driveway is from 2010 or later and the surface is intact, sealing makes sense. For 1920s aggregate, we recommend skipping it.
What we tell University Heights homeowners
Wash once a year if your driveway sits under tree canopy. Every 18 months if it gets full sun. Pre-treat any oil drips within a week, not a month. The longer oil sits, the deeper it migrates into the porous old concrete.
For more on driveway timing, see our driveway cleaning cadence post. For our full University Heights service info, the University Heights area page has the full breakdown.
If we cleaned your driveway this spring in University Heights, leaving a review on Google with your specific street or block helps neighbors find us. Mention the service and the area.