Start Your Backyard Build the Right Way! On Time and on budget, Or 10% Off.

Full-service site development for homeowners building backyard homes (ADUs) in the South Puget Sound region.

Why Choose FTS Excavation:

Choosing the right excavation partner makes a difference. Our approach focuses on reliability, planning, and professional standards that support successful projects.

Generational housing
Minimal change orders
Realistic timelines and project management of site preparation
Many certifications including Septic Installer License, Right of Way Bonding, CESCL, Fireline Installer, etc.
Site Utility Provisioning & Coordination

Why Site Development Matters

Underground Complexity

Backyard builds often require over-excavation, structural fill, septic systems, or deep sewer connections.

Permits & Inspections

We eliminate delays by ensuring plan accuracy and managing all mandatory testing.

Site Clearing & Erosion Control

Expert installation of silt fencing and grading systems to handle dewatering and keep your site code-compliant

Costly Mistakes When Rushed

Poor site work can lead to flooding, failed inspections, structural settling, change orders, and expensive delays.

What is an ADU?

An ADU (Accessory Dwelling Unit) is a fully independent second home built on your property.

Homeowners and individual investors build ADUs to:

Our Site Development Process

1. Property Review

Assess plans for accuracy slope, soil, drainage, and access.

2. Budget

Create a clear budget and prepare customers for potential change orders.

3. Timeline Planning

Develop a realistic schedule coordinated with builders and subs. Sequenced to prevent delays.

4. Erosion Control, Clearing & Grading

Install silt fencing and proper dewatering to prevent civil penalties.

5. Foundation dig & survey
staking

Excavate per engineered plans, install drains if required, and backfill after inspection.

6. Utilities & Drainage

Install septic or sewer, water line, electrical, and storm drainage.

7. Final Prep & Handoff

Site ready for your builder with referrals available if needed.

Get Started Building Your ADU

Request an estimate today.

Why Home-Owners Trust Us

We love hearing that we have made a customer's day better

Planning an ADU Backyard Home or Custom Build?

Contact Information

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