Black Rock Underground LLC

Black Rock Underground LLC Call Black Rock Underground today 1-503-747-9312 The technicians at Black Rock Underground, LLC are industry leaders in trenchless technology.

We have been helping diagnose, repair and replace sewers in the Portland metro area for over a decade. We’ll work with you to diagnose and develop plan to help keep your home sewer lines healthy.

Portland-area real estate agents know how quickly a sewer issue can complicate a transaction.That’s why having a sewer c...
08/07/2026

Portland-area real estate agents know how quickly a sewer issue can complicate a transaction.

That’s why having a sewer contractor you can trust matters.

At Black Rock Underground, we perform our own video inspections before preparing the bid, so you and your clients get a clear picture of what’s happening underground before decisions are made.

We help agents with:

✔️ Accurate estimates based on video inspections
✔️ Fixed lump-sum pricing
✔️ Clear repair recommendations
✔️ Trenchless repairs with less disruption
✔️ Faster turnaround when timelines are tight

With more than 13 years of experience, we’ve worked with hundreds of agents across the Portland metro and Southwest Washington.

We answer the call, explain the options clearly, and help keep the transaction moving.

Licensed & Insured | OR CCB #196119
📞 Call or text (503) 747-9312
Request a quote: https://blackrockunderground.com/contact/



Did you know summer is one of the best times to address drainage and site issues before the rain returns?When grading, c...
07/17/2026

Did you know summer is one of the best times to address drainage and site issues before the rain returns?

When grading, culverts, or surface water systems aren’t working properly, heavy rain can lead to erosion, standing water, driveway washouts, soft soil, and property damage.

Black Rock Underground helps homeowners and property owners identify and correct drainage concerns with practical site solutions built for long-term performance.

✔ Grading concerns
✔ Surface water management
✔ Culverts
✔ Drainage solutions
✔ Site corrections

Don’t wait until the next storm exposes the problem. Summer is a smart time to get ahead of it.

Licensed & Insured | OR CCB #196119
📞 Call or text (503) 747-9312
Request a quote: https://blackrockunderground.com/contact/

As the Fourth of July weekend approaches, we’re reminded that strong communities are built on reliable infrastructure — ...
07/03/2026

As the Fourth of July weekend approaches, we’re reminded that strong communities are built on reliable infrastructure — much of it below the surface.

At Black Rock Underground, our team works on the sewer, drainage, grading and site solutions that help protect properties and keep projects moving.

From residential repairs to commercial and public works projects, we take pride in doing the work right from the ground up.

Wishing everyone a safe and enjoyable Fourth of July weekend.

Licensed & Insured | OR CCB #196119
📞 Call or text (503) 747-9312
Request a quote: https://blackrockunderground.com/contact/

Did you know culverts play an important role in protecting your property from water damage?When a culvert is blocked, da...
06/26/2026

Did you know culverts play an important role in protecting your property from water damage?

When a culvert is blocked, damaged, or undersized, water can back up where it shouldn’t—leading to erosion, flooding, washouts, and drainage problems near driveways, roads, and surrounding property.

Black Rock Underground helps homeowners and property owners address drainage and site concerns with practical solutions for:

✔ Culverts
✔ Drainage
✔ Surface water management
✔ Site solutions

Good drainage helps keep water moving where it should and reduces the risk of bigger problems over time.

Licensed & Insured | OR CCB #196119
📞 Call or text (503) 747-9312
Request a quote: https://blackrockunderground.com/contact/


Did you know poor grading can send water toward your home instead of away from it?Surface water may not seem like a majo...
06/12/2026

Did you know poor grading can send water toward your home instead of away from it?

Surface water may not seem like a major issue at first, but over time it can contribute to erosion, soft soil, drainage problems, driveway washouts, and water collecting where it shouldn’t.

Black Rock Underground helps homeowners identify and address site-related issues such as:

✔ Grading concerns
✔ Surface water management
✔ Drainage problems
✔ Culverts
✔ Site corrections

Not every property issue starts with the sewer line. Sometimes, the bigger concern is how water moves across the land.

If you’re noticing standing water, erosion, or drainage issues around your property, our team can help evaluate the problem and recommend practical solutions.

Licensed & Insured | OR CCB #196119
📞 Call or text (503) 747-9312
Request a quote: https://blackrockunderground.com/contact/

Calling all realtors! When property issues come up during a transaction, timing and clarity matter.Black Rock Undergroun...
05/22/2026

Calling all realtors!

When property issues come up during a transaction, timing and clarity matter.

Black Rock Underground works with real estate professionals, homeowners, and inspectors to help identify and address underground and site-related concerns that can impact a sale.

From sewer scope issues and sewer repairs to drainage, grading, surface water management, culverts, and other property concerns, our team helps provide clear answers and practical solutions so everyone understands the next step.

If you’re working through an inspection issue or helping a client evaluate a property, we’re here to help keep the process moving.

Licensed & Insured | OR CCB #196119

📞 Call or text (503) 747-9312
Learn more: https://blackrockunderground.com/about/for-real-estate-agents/

Most sewer and utility issues start where you can’t see them.Underground.At Black Rock Underground, we specialize in ide...
05/08/2026

Most sewer and utility issues start where you can’t see them.

Underground.

At Black Rock Underground, we specialize in identifying problems early and delivering reliable solutions—from inspection and excavation to full sewer replacement and utility installation.

✔ Sewer services
✔ Utility installation
✔ Excavation
✔ Repairs & maintenance

Whether it’s residential, commercial, or public works, our team is equipped to handle the work below the surface—safely, efficiently, and done right the first time.

Licensed & Insured | OR CCB #196119
📞 Call or text (503) 747-9312
Request a quote: https://blackrockunderground.com/contact/

A quality sewer replacement doesn’t just fix what’s underground—it leaves your property looking like we were never there...
04/17/2026

A quality sewer replacement doesn’t just fix what’s underground—it leaves your property looking like we were never there.

With trenchless sewer replacement, our team can install a new sewer line while minimizing disruption and restoring the surface once the work is complete.

✔ Minimal impact to your property
✔ Professional surface restoration
✔ Long-lasting underground solution

At Black Rock Underground, we take pride in doing the job right from start to finish—above ground and below.

Licensed & Insured | OR CCB #196119
📞 Call or text (503) 747-9312
Request a quote: https://blackrockunderground.com/contact/

Not all sewer replacements require major excavation.With trenchless pipe bursting sewer service replacement, we can repl...
04/03/2026

Not all sewer replacements require major excavation.

With trenchless pipe bursting sewer service replacement, we can replace your sewer line using small access points—like the ones shown here—while keeping your yard, landscaping, and hardscaping largely intact.

In this project, our team installed a new sewer line and cleanout access using minimal digging, reducing disruption while delivering a long-lasting solution.

✔ Smaller access areas
✔ Less damage to landscaping
✔ Efficient, reliable replacement

If you're dealing with sewer backups or an aging line, trenchless solutions may be the right fit.

Licensed & Insured | OR CCB #196119
📞 Call or text (503) 747-9312
Request a quote: https://blackrockunderground.com/contact/

04/01/2026

Is your drain backing up again? Noticing a strange smell near your home, or a soft spot in the yard that never dries out? 👋 That's your sewer line telling you something — and ignoring it only makes it worse.

Black Rock Underground has been helping homeowners across the Portland metro, Oregon, and SW Washington for over 13 years. Owner Cory Moore and his crew start with a camera inspection so you can actually see what's happening underground.

Here's what sets them apart:
✔️ Trenchless pipe bursting — your yard stays intact
✔️ Honest evaluation with clear options explained upfront
✔️ Licensed & insured in OR and WA
✔️ Restoration built into every job
✔️ Financing available for unexpected repairs

No high-pressure sales. No inflated quotes. Just 13+ years of doing it right the first time.

Get Your Free Sewer Evaluation 👉 blackrockunderground.com
Or call (503) 747-9312

Address

Hillsboro, OR
97124

Opening Hours

Monday 7am - 5pm
Tuesday 7am - 5pm
Wednesday 7am - 5pm
Thursday 7am - 5pm
Friday 7am - 5pm

Website

Alerts

Be the first to know and let us send you an email when Black Rock Underground LLC posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Black Rock Underground LLC:

Shortcuts

Share

Category