Horizontal Boring Services in King County, WA
Underground Utility Installation Without Destroying Your Yard
Need a water line, sewer pipe, or utility conduit installed under your driveway, landscaping, or foundation? Lighthouse Plumbing offers professional horizontal boring services that get the job done—without trenching through your property.
Licensed. Insured. Family-Owned.

Why Homeowners Choose Horizontal Boring
No Trenching Required
Traditional excavation means tearing up your lawn, driveway, or garden. Horizontal boring creates a clean path underground—your landscaping stays intact.
Faster Project Completion
Most residential horizontal boring jobs are completed in a single day. No waiting for extensive excavation and restoration work.
Cost-Effective Solution
Skip the expense of removing and replacing concrete, asphalt, or mature landscaping. Horizontal boring often costs less than traditional dig-and-replace methods.
Minimal Property Disruption
We need only small entry and exit points. Your daily routine isn't interrupted by heavy machinery tearing up your yard.
Common Horizontal Boring Projects We Handle
Water line installation under driveways and sidewalks
Sewer line replacement without excavating landscaping
Gas line installation to detached garages or outbuildings
Electrical conduit runs to shops, sheds, or outdoor lighting
Irrigation system main lines under hardscaping
Foundation crossings for new utility connections
Our Service Process
Free On-Site Estimate
We assess your property, identify utility locations, and provide upfront pricing before any work begins.
Underground Utility Locating
We coordinate with local utility companies to ensure safe boring paths away from existing infrastructure.
Precision Boring
Our experienced crew uses professional-grade equipment to create accurate underground pathways for your utilities.
Connection & Testing
We complete all connections and thoroughly test the new installation to ensure everything works properly.
Serving the Eastside & Greater Seattle
Lighthouse Plumbing provides horizontal boring services throughout King County, including:
Snoqualmie & North Bend
Issaquah & Sammamish
Bellevue & Kirkland
Redmond & Woodinville
Renton & Newcastle
Fall City, Carnation & Duvall
Frequently Asked Questions
How much does horizontal boring cost?
Pricing depends on the length of the bore, soil conditions, and diameter needed. Most residential projects range from $1,500 to $5,000. We provide free estimates with exact pricing before starting work.
How long does horizontal boring take?
Most residential horizontal boring jobs are completed in one day. Larger or more complex projects may take 2-3 days.
Will horizontal boring damage my lawn or driveway?
No. Horizontal boring requires only small entry and exit pits (typically 2-3 feet wide). Your driveway, landscaping, and hardscaping remain untouched.
Can you bore under my concrete driveway?
Yes. Horizontal boring is specifically designed to install utilities under concrete, asphalt, and other hardscaping without removal or damage.
Do I need permits for horizontal boring?
Some projects require permits depending on your location and the type of utility being installed. We handle all permitting requirements as part of our service.

Ready to Get Started?
Get a free estimate for your horizontal boring project. Our team will assess your property and provide upfront pricing—no surprises, no hidden fees.
Lighthouse Plumbing — Licensed WA Plumbing Contractor: LIGHTP*762K2
