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Top-Rated Excavation pros in Friday Harbor - Updated Nov 2026

Avatar for JB Construction
JB Construction
4.0(
1
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+2 more

Serving Friday Harbor, WA and surrounding areas

In business since 2001

Emergency services offered

JB Const . is dedicated to serving our community and our professionalism is what you will need for your next project ..We are a small company that allows us to perform quality projects without to many employees and sub contractors ..Sub Contractors associated with JB Const are as dedicated as we are in serving our customers and will take every step possible to see your project is being done correctly and finished at a reasonable time...Our customers are always satisfied when we leave the job and we are always happy to make new friends !! Quality Craftsmenship Guaranteed !

Rasar state Park
Handicap Bathroom
Stamped Concrete
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Excavating FAQs, answered by experts

Septic drain lines (or leach lines) are typically buried between 18 and 36 inches underground, and should be at least 6 inches below the surface. These pipes are perforated and surrounded by filtering materials like sand or gravel. Burying the lines at this depth helps minimize odors and allows bacteria and other biological processes in the soil to effectively treat the wastewater. Burying lines too close to the surface can cause issues unless the soil is very compact and stable.

The best method for digging a trench depends on the scope of the project. For a short, shallow trench (less than 2 feet deep) in light, soft soil, digging by hand may be sufficient. However, digging by hand is labor-intensive, so consider the effort required. A machine trencher is the better option for longer trenches (over 100 feet), deeper ones, or when dealing with difficult soil conditions, such as rocky or hard ground, or obstructions like tree roots. A machine can save significant time and energy in these situations.

Excavation and grading are both generally necessary for designing your foundation, and leveling the ground where your foundation will go. These steps can also prepare the area by removing vegetation and anything else that could interfere with your home’s foundation.

Yes. A metal detector is one of the quickest and easiest ways to find your septic tank. However, metal detectors can be too expensive (costing upward of $300 in some cases), and not everyone has a metal detector just lying around. If that’s the case for you, you can also take a long metal rod and poke it into the ground at regular intervals until you hit something—likely your septic tank lid.

We recommend removing the stump, and grinding is a popular way to do it. You can also dig out small stumps or stumps that have fully decayed instead of grinding them. However, don’t try using acids or fire for killing a tree stump, which is a fire hazard and illegal in many areas.

Leaving the stump alone invites eventual problems, including attracting termites, mold, and fungi.

The Friday Harbor, WA homeowners’ guide to excavation services

From average costs to expert advice, get all the answers you need to get your job done.