Black Rock Underground

Kate G.

So impressed. They showed up early, with masks, and explored the areas we wanted, our downspouts and underground drain to our rain drain. They found what was clogging our downspouts and dug out the debris. They showed us how the system works and what might eventually be wrong and explained what might be needed in the future. And they did not charge us anything for the evaluation and their time. When we need anything ever again for our underground systems, we will definitely call them.

Dani T.

Honestly pays. Plumbing company told me I needed to replace sewer pipe and gave me a $17k estimate. Britt scoped the pipes to give me another bid, except he couldn't give me a bid because my pipes are fine. He didn't even charge me since he couldn't bid the project.

Kieshawn L.

Corey and Drew at Blackrock Underground are an exceptional contractor team to work with through and through. As a real estate agent they have come through for my clients and I on numerous occasions. They are patient, thorough, flexible and will see the job through to the end with high quality. Their pricing is competitive and the service + quality is top notch. One of the recent jobs they did for us was a major septic to sewer conversion in Washington County. When I need landscape excavation services they are always my first call.

Tanya S.

I was very impressed with the service and communication. They showed up on time and stayed late to complete the job. We closed on time!! I'll definitely be referring them to my clients in the future. Realtor Tanya Smith with Oregon First

Kristen R.

These guys are professional, reliable, and have fair pricing. I got a total of five estimates to decommission my cesspool and hook-up to the city sewer. Black Rock had the cheapest estimate and also Drew who came out to do the estimate was honest about the job and stayed to answer all of my questions. Other companies that came to do estimates, left as soon as they could. My job was urgent so they were flexible with the schedule and got it done ASAP. The crew that came out was professional and Cory always answered all of my questions promptly. I would definitely recommend this company. I am very satisfied with their work.

Blackball M.

Called Corey to get a bid on a job. He let me know that the type of job I needed required a different company. The guy he recommended ended up being awesome. I really appreciated the help.

Richard R.

Cory and his guys do everything that the other reviews said!
But it is the after service that I am commenting on.
Issue number 1 after sewer replacement was completed: Basement flooded do to sewer line backup. Called and Cory had someone out that afternoon. The backup was not an issue relating to their work but Joe scoped to find the problem and unclogged the line anyway.
Issue number 2 after sewer replacement was completed and 6 months later: Soil sinking around the new clean outs. E-mailed Cory and a crew was out within a few hours and remedied the problem. Scoped to make sure there was no line problem and filled the settling. Professionally handled with a minimum of disruption.
I am an ""old grouch"" and I have never had aftercare service like this, especially in the plumbing world.

Ryan D.

Had them do a sewer scope inspection on my home. Joel arrived on time and did the inspection. Everything was A-Ok!
Recorded the video and uploaded it on youtube.

Michelle H.

They came out for a sewer scope and did a great job. The tech was finished after about 30 minutes! After he finished, I asked him to peek at my crawl space (because the entrance was blocked during my home inspection). He gladly said okay and was willing to help. I just wanted to know if there was any water down there. He didn't charge me for going down into the crawl space.

Black Rock was recommended by my sisters realtor. Thank you all!

Karen A.

Cory and his team at BlackRock Underground are skilled and professional. I live in a 1920s bungalow in NE PDX, and the sewer runs under my front yard to the street. The crew dug a trench when I thought I was going to have a trenchless installation. Corey listened and immediately understood where the communication breakdown had happened. He totally made it right.
It's when the unexpected happens that you can really tell how someone runs their business. It was easy to deal with them and everything was fixed in a jiffy. I'm 1000% satisfied and HIGHLY recommend them! And hooray, no more sewer worries!