Fontana, California · 22 years in business
Scheduled commercial pressure washing built around your operating hours.
Everything below this line — the compliance file, operational scorecard, proof-of-work records, dispute protocol, and credentialed reviews — is generated sample content that illustrates the WashAttest record format. It is not real data about Onyx Surface Cleaning. This business is not yet in our directory, so no real data exists for it on this page.
Sample record snapshot
Verified Oct 12, 2026
Trailing 12 months
Attached to this listing
All resolved
Each document is checked against the issuing source and re-verified at renewal. An expired or missing item stays visible on the record.
General liability insurance
Sentinel Insurance — $5M umbrella aggregate
verified
Expires Mar 20, 2027
Workers' compensation
Sentinel Insurance — statutory limits, 3 employees covered
verified
Expires Aug 28, 2027
Business license
State contractor registration #101758
verified
Expires Feb 11, 2027
Stormwater / NPDES permit
State general permit for exterior cleaning discharge
verified
Expires Aug 7, 2027
OSHA safety program
Documented training program, 0 recordable incidents in 12 months
verified
No expiry on file
Water reclamation and discharge
Trailing 12 months, drawn from 183 documented visits. These are the numbers a star rating hides.
Arrived within the agreed service window
Visits requiring a return trip
Median time to first reply
Documented nightly capacity
Contracts renewed at term
Recordable incidents per 1,000 visits
Documentation attached to this listing and reconciled against billing, so a claim about work performed can be checked rather than taken on faith.
Timestamped photo pairs captured at the start and end of each scheduled visit, retained for 24 months.
Per-visit log recording date, unit identifiers, services performed, and the crew on site.
Current certificate naming the required additional insured, re-verified at each renewal.
Record of water recovered, method used, and discharge destination for each wash event.
A business can answer a review with evidence. The record shows the claim, the response, the evidence, and the outcome — including when the review was upheld.
No disputes have been filed against this listing.
40 of 44 reviews come from a verified operator role. Roles on this listing: Restaurant owner, Store manager, Building engineer, Retail operations manager, Property manager, Shopping center manager, Facility manager.
Priya C.
Restaurant owner
Oct 15, 2026
Booked them for the school walkway after a bad storm in Fontana. They worked overnight so we did not lose a single hour of business.
Commercial Pressure Washing · Fontana, California · via Google
Yolanda N.
Store manager
Oct 15, 2026
Booked commercial pressure washing in Fontana and they handled the water and permits. They cleaned the dumpster pad and the smell is gone.
Commercial Pressure Washing · Fontana, California · via Google
Theresa G.
Building engineer
Aug 2, 2026
They handled the grocery store sidewalk at our Fontana location overnight so we never closed. The grease trap area finally does not smell.
Commercial Pressure Washing · Fontana, California · via Google
Cedric C.
Retail operations manager
Jul 19, 2026
We use them quarterly for the bank drive-up at our Fontana storefront. They documented everything with photos for our records.
Commercial Pressure Washing · Fontana, California · via Google
Kurt Y.
Restaurant owner
Jun 12, 2026
They cleaned the bank drive-up and the drive-thru lane at our Fontana location. They were fully insured and provided a COI without us asking.
Commercial Pressure Washing · Fontana, California · via Google
Maurice Q.
Restaurant owner
Jun 3, 2026
I manage the property and hired them for the medical plaza sidewalk in Fontana. The grease trap area finally does not smell.
Commercial Pressure Washing · Fontana, California · via Google
Lauren W.
Property manager
May 18, 2026
We had our gas station canopy pressure washed before a health inspection in Fontana. Good service. They had to come back for the dumpster pad.
Commercial Pressure Washing · Fontana, California · via Google
Cara V.
Restaurant owner
May 4, 2026
Our dealership lot in Fontana had a layer of grime that nothing else touched. They were fully insured and provided a COI without us asking.
Commercial Pressure Washing · Fontana, California · via Google
Lionel D.
Shopping center manager
Apr 22, 2026
Booked commercial pressure washing for our convenience store forecourt in Fontana. They cleaned the dumpster pad and the smell is gone.
Commercial Pressure Washing · Fontana, California · via Yelp
Dwayne T.
Retail operations manager
Apr 20, 2026
They pressure washed our parking garage and the difference is night and day. The building looks like it was just built.
Commercial Pressure Washing · Fontana, California · via Google
Alicia J.
Store manager
Apr 10, 2026
Average service. The invoice did not match the original quote. The sealant was applied unevenly.
Commercial Pressure Washing · Fontana, California · via Yelp
Xavier Z.
Retail operations manager
Mar 23, 2026
They removed oil stains from our shopping center walkway that I thought were permanent. Pleased with the result. Communication could be more proactive.
Commercial Pressure Washing · Fontana, California · via Yelp
Wendy S.
Building engineer
Mar 16, 2026
We had our retail center pressure washed before a health inspection in Fontana. They worked overnight so we did not lose a single hour of business.
Commercial Pressure Washing · Fontana, California · via Google
Dustin Y.
Store manager
Mar 16, 2026
They cleaned our hotel entrance and the concrete looks new. The concrete looks much better. A few stubborn stains remain.
Commercial Pressure Washing · Fontana, California · via Google
Ursula M.
Facility manager
Mar 12, 2026
Our hotel entrance in Fontana had not been cleaned in years. Good service. They had to come back for the dumpster pad.
Commercial Pressure Washing · Fontana, California · via Direct
Ethan E.
Store manager
Mar 10, 2026
Our storefront needed degreasing before the health department visit. Reliable crew. The invoice took a while to arrive.
Commercial Pressure Washing · Fontana, California · via Facebook
Meredith J.
Facility manager
Mar 7, 2026
They came out to our Fontana property and cleaned the hotel entrance top to bottom. Great outcome. I would have liked more notice before they arrived.
Commercial Pressure Washing · Fontana, California · via Google
Yvette D.
Restaurant owner
Feb 4, 2026
The drive-thru lane at our Fontana site had a black film of grime on it. Our inspection passed with zero cleaning-related notes.
Commercial Pressure Washing · Fontana, California · via Google
Chloe G.
Store manager
Feb 4, 2026
We hired them for the retail center and ended up adding a recurring contract. The concrete looks much better. A few stubborn stains remain.
Commercial Pressure Washing · Fontana, California · via Google
Elijah K.
Store manager
Jan 30, 2026
They cancelled the day of and did not reschedule. Grease and gum were still visible afterward.
Commercial Pressure Washing · Fontana, California · via Google
Arturo B.
Property manager
Jan 29, 2026
Commercial pressure washing in Fontana that actually works around your hours. Only knocking a star because the start time slipped by an hour.
Commercial Pressure Washing · Fontana, California · via Google
Nina K.
Building engineer
Jan 24, 2026
Work was fine. Communication was poor throughout. The crew left before we could do a walkthrough.
Commercial Pressure Washing · Fontana, California · via Google
Diane S.
Facility manager
Jan 23, 2026
Our school walkway had rust stains and graffiti — both gone. They sealed the concrete after cleaning it.
Commercial Pressure Washing · Fontana, California · via Google
Amber E.
Retail operations manager
Jan 13, 2026
Our restaurant patio in Fontana was the first thing customers saw — now it is spotless. The building looks like it was just built.
Commercial Pressure Washing · Fontana, California · via Yelp
Grant C.
Facility manager
Jan 13, 2026
They removed oil stains from our convenience store forecourt that I thought were permanent. They were fully insured and provided a COI without us asking.
Commercial Pressure Washing · Fontana, California · via Google
Aaron E.
Property manager
Jan 13, 2026
Our brewery patio had years of gum, oil, and grime built up. Our customers noticed the difference the same day.
Commercial Pressure Washing · Fontana, California · via Yelp
Roland D.
Store manager
Jan 9, 2026
They cleaned our bank drive-up and the concrete looks new. The grease trap area finally does not smell.
Commercial Pressure Washing · Fontana, California · via Yelp
Kelsey A.
Store manager
Dec 13, 2025
The medical plaza sidewalk was slick with grease and now it is safe to walk on. They cleaned the dumpster pad and the smell is gone.
Commercial Pressure Washing · Fontana, California · via Direct
Jonah E.
Retail operations manager
Nov 29, 2025
We hired them for the fast-casual patio and ended up adding a recurring contract. No damage to the paint, signage, or landscaping.
Commercial Pressure Washing · Fontana, California · via Yelp
Landon L.
Store manager
Nov 27, 2025
They pressure washed the dumpster pad and the dumpster area in one visit. Reliable crew. The invoice took a while to arrive.
Commercial Pressure Washing · Fontana, California · via Yelp
Aaron T.
Shopping center manager
Nov 22, 2025
Our parking garage in Fontana is now part of our monthly maintenance. Good service. They had to come back for the dumpster pad.
Commercial Pressure Washing · Fontana, California · via Google
Kurt M.
Facility manager
Nov 4, 2025
We had them out to our Fontana location for the dumpster pad and the loading area. The grease trap area finally does not smell.
Commercial Pressure Washing · Fontana, California · via Facebook
Adriana D.
Retail operations manager
Oct 17, 2025
They handled the brewery patio at our Fontana location overnight so we never closed. Reliable crew. The invoice took a while to arrive.
Commercial Pressure Washing · Fontana, California · via Google
Priya K.
Shopping center manager
Sep 25, 2025
They came out to our Fontana property and cleaned the storefront top to bottom. Our customers noticed the difference the same day.
Commercial Pressure Washing · Fontana, California · via Yelp
Hugo J.
Restaurant owner
Sep 23, 2025
Our grocery store sidewalk in Fontana is now part of our monthly maintenance. They came back to touch up an area at no charge.
Commercial Pressure Washing · Fontana, California · via Google
Rosa T.
Store manager
Sep 9, 2025
The gas station canopy at our facility was embarrassing before they came out. They used hot water and a degreaser that actually worked.
Commercial Pressure Washing · Fontana, California · via Google
Owen J.
Facility manager
Sep 6, 2025
We needed the self-storage driveway cleaned before a corporate walkthrough in Fontana. The concrete came out several shades lighter.
Commercial Pressure Washing · Fontana, California · via Google
Ivy R.
Facility manager
Aug 6, 2025
Decent clean, though a few areas were missed. The sealant was applied unevenly.
Commercial Pressure Washing · Fontana, California · via Direct
Caleb N.
Retail operations manager
Jul 1, 2025
They pressure washed the apartment breezeway and the dumpster area in one visit. They finished ahead of schedule and under the quote.
Commercial Pressure Washing · Fontana, California · via Google
Carmen G.
Store manager
Jun 26, 2025
Our dealership lot was a grease magnet — not anymore. The building looks like it was just built.
Commercial Pressure Washing · Fontana, California · via Facebook
Lena I.
Property manager
Jun 15, 2025
We had them out to our Fontana location for the apartment breezeway and the loading area. Reliable crew. The invoice took a while to arrive.
Commercial Pressure Washing · Fontana, California · via Yelp
Denise C.
Facility manager
Jun 14, 2025
The result was okay. Getting a quote took three calls. A strip along the building was left untouched.
Commercial Pressure Washing · Fontana, California · via Facebook
Keisha C.
Property manager
Jun 7, 2025
Our storefront in Fontana had not been cleaned in years. Our customers noticed the difference the same day.
Commercial Pressure Washing · Fontana, California · via Direct
Aaron D.
Restaurant owner
Jun 7, 2025
They cleaned the warehouse apron at our Fontana location before we opened for the day. They sealed the concrete after cleaning it.
Commercial Pressure Washing · Fontana, California · via Facebook
No signed-in customer has reviewed this listing yet.
No account-backed reviews yet. Be the first to write one.
This listing is not claimed yet, so it cannot collect account-backed reviews. Add it from your account to open it up for reviews.
Fontana, California
Commercial pressure washing for storefronts, lots, and dumpster pads across Fontana.
Fontana, California
Exterior cleaning crews handling concrete, grease, gum, and graffiti for Fontana businesses.