Washington State Manufactured Home Installer

At Columbia Groundwork Inc., we provide Washington State licensed manufactured home installation services for homeowners, manufactured home dealers, contractors, and property owners throughout Cowlitz County, Lewis County, and Clark County. Based in Castle Rock, Washington, our team helps manage the full process of placing a manufactured home, from site preparation and utility coordination to setup, skirting, and final site support.

Manufactured Home Site Preparation and Setup

Placing a manufactured home takes more than just delivery. The site needs to be properly prepared, accessible, graded, and ready for the home before it arrives. Columbia Groundwork Inc. brings excavation, groundwork, and installation experience together so the project can move smoothly from start to finish.

  • Our manufactured home installation services may include:

  • Site evaluation and planning

  • Excavation and grading

  • Building pad preparation

  • Driveway and access preparation

  • Drainage and stormwater support

  • Utility trenching

  • Water line coordination

  • Sewer or septic connection support

  • Electrical service coordination

  • Mechanical hookup support

  • Manufactured home placement coordination

  • Blocking, leveling, and anchoring

  • Skirting installation

  • Final grading and site cleanup

Dealer and homeowner installation support

Utilities, Skirting, and Mechanical Hookups


A manufactured home project is not complete once the home is set in place. Columbia Groundwork Inc. can help coordinate and support the work needed to make the home usable, secure, and ready for final approval.

This can include utility trenching, septic related groundwork, water and sewer coordination, skirting installation, mechanical hookup support, drainage corrections, final grading, and cleanup around the home site. By handling the groundwork side and supporting the installation process, we help reduce delays and keep the project moving.



Local Excavation and Manufactured Home Support

As a full service excavation and groundwork company, we understand that a successful manufactured home installation starts with the land. Proper grade, access, drainage, utility routes, and pad preparation all matter before the home is delivered.


Service Areas

We proudly serve:

  • Castle Rock, WA

  • Longview & Kelso

  • Woodland & Kalama

  • Chehalis & Centralia

  • All of Cowlitz, Lewis, and Clark Counties


Why Choose Columbia Groundwork?

  • Locally owned and operated

  • Licensed and insured trucking services

  • Modern, well-maintained fleet

  • Experienced drivers who know the local terrain

  • Competitive rates and transparent scheduling


Request a Quote

Looking for a Washington State-licensed manufactured home installer for your next project? Contact Columbia Groundwork Inc. today at (360) 957 8847 or visit ColumbiaGroundwork.com to request a quote.