Western Washington Construction

Site Preparation & Excavation

Professional Contractors

Entrust your next project to contractors who have been in the game for years and have the know-how to execute your dream build.

Licensed and Insured

Our contractors are licensed and insured experts. Our work is done at the highest safety standards.

We Fill Any Need

Our services range from new home construction to general home projects. Whatever your build is, we can do it.

Honest and Trustworthy

No surprise work, fees, or flaky contractors here. We communicate clearly and deliver what we promise.

Every construction project starts below grade. At Capitol Custom Construction, we provide heavy site preparation and excavation services tailored to the terrain of Western Washington. We prepare stable, structural pads engineered to support custom residential builds, structural additions, and commercial developments across the Puget Sound.

The Start of Your Build

Why Choose Capitol Custom Construction for Excavation?

Our team combines heavy power with advanced grade control to ensure proper compaction, sub-base stability, and critical drainage mitigation from day one. We eliminate site delays by anticipating underground obstacles, managing erosion controls, and securing precise final grades before the first concrete pour.

  • Our operators dig with the final architectural structure in mind. We execute precise over-excavation for footings, establish ideal equipment access points, and trench utilities to protect the overall build schedule, saving you thousands in corrective dirt work down the line.

  • We build integrated, site-specific drainage infrastructure during the excavation phase to protect your foundation against heavy rainfall and groundwater saturation.

  • We specialize in low-impact site clearing, engineered retaining wall excavation, and erosion control compliance across Thurston, Pierce, and King counties.