Excavation Services
Site preparation, grading, trenching, and excavation best practices.
How We Solved a Major Drainage Problem for an Eugene Homeowner
See how Cojo Excavation fixed chronic yard flooding and foundation moisture for an Eugene, Oregon homeowner. Includes before/after photos, costs, and the drainage solution we used.
Case Study: Site Excavation for New Construction in Corvallis
See how Cojo Excavation completed a challenging commercial site excavation in Corvallis, Oregon. Includes clay soil management, timeline, costs, and before/after results.
How to Choose the Right Subcontractor for Site Work
Learn how to evaluate and choose an excavation subcontractor for your Oregon construction project. Covers licensing, insurance, equipment, references, and red flags.
Cojo's Excavation Capabilities: Equipment, Crew, and Certifications
Learn about Cojo Excavation & Asphalt's equipment fleet, crew expertise, certifications, and service capabilities for Oregon construction projects along the I-5 corridor.
Understanding Cut and Fill in Site Grading
Learn how cut and fill earthwork shapes construction sites in Oregon. Understand the process, cost factors, soil balancing, and what it means for your project timeline.
Drainage Problems After Construction: Common Causes and Fixes
Discover why drainage problems develop after construction and how to fix them. Covers grading errors, compacted soil, downspout issues, and proven solutions for Oregon properties.
Excavation Cost Estimator: Site Prep Pricing for Oregon Projects
Estimate excavation and site preparation costs for Oregon construction projects. Covers grading, trenching, foundation excavation, and utility work with 2026 pricing data.
Excavation Safety: OSHA Requirements Every Contractor Should Know
Understand OSHA excavation safety requirements including trench protection, soil classification, and competent person standards. Essential knowledge for Oregon contractors and property owners.
Financing Options for Excavation and Paving Projects in Oregon
Explore financing options for excavation and paving projects in Oregon. Covers home equity loans, personal loans, contractor financing, SBA loans, and payment strategies.
Land Clearing Methods: Forestry Mulching vs. Traditional Bulldozing
Compare forestry mulching and traditional bulldozing for land clearing in Oregon. Learn the costs, environmental impact, timelines, and best use cases for each method.
Forestry Mulching vs. Excavation: Cost and Timeline Comparison
Compare forestry mulching and traditional excavation for land clearing in Oregon. Detailed cost breakdowns, timelines, and a calculator to estimate your project.
French Drain Installation Cost in Oregon: What to Budget
Plan your French drain installation budget with 2026 Oregon pricing. Covers interior and exterior drains, yard drainage, and foundation waterproofing costs.
GPS-Guided Excavation: How Technology Is Changing Site Work
Learn how GPS-guided excavation technology improves accuracy, reduces costs, and speeds up site work for Oregon construction projects along the I-5 corridor.
The Role of Grading in New Construction: Getting It Right
Learn why proper site grading is critical for new construction projects. Covers drainage, foundation preparation, code requirements, and common grading mistakes in Oregon.
How Proper Grading Protects Your Home's Foundation
Learn why yard grading is critical for foundation protection in Oregon. Covers proper slope requirements, signs of grading problems, and how to fix them before damage occurs.
Land Clearing Cost Per Acre in Oregon: 2026 Pricing Breakdown
Understand land clearing costs per acre in Oregon for residential, commercial, and agricultural projects. Includes pricing by terrain type, vegetation density, and disposal methods.
How to File for a Construction Permit in Oregon: Step-by-Step
A step-by-step guide to filing construction permits in Oregon. Covers grading permits, building permits, DEQ requirements, and tips for faster approval along the I-5 corridor.
Understanding Oregon Construction Permits and Building Codes 2026
Navigate Oregon's construction permit process and 2026 building code updates. Covers Portland BDS, Salem PAC, Eugene PDD, and the 2025 OSSC code transition deadline.
How to Prepare Your Property for Excavation Work
Step-by-step guide to preparing your property for excavation. Covers utility locates, tree protection, access planning, neighbor notification, and what to expect during the process.
How Much Does Site Grading Cost? Oregon 2026 Guide
Understand site grading costs in Oregon for residential and commercial projects. Covers yard grading, lot preparation, drainage grading, and finish grading with 2026 pricing.
Site Preparation Checklist: What Needs to Happen Before Breaking Ground
A complete site preparation checklist for Oregon construction projects — from permits and surveys to grading, utilities, and erosion control. Know what needs to happen before breaking ground.
Standing Water on Your Property? Drainage Solutions Ranked
Compare drainage solutions for standing water on your property. Ranked by effectiveness, cost, and suitability for Oregon's climate. From French drains to regrading to dry wells.
Trenching vs. Excavation: Key Differences and When to Use Each
Understand the differences between trenching and excavation, including costs, equipment, safety requirements, and when each method is appropriate for your Oregon construction project.
What to Expect on Excavation Day: A Homeowner's Guide
Know exactly what happens on excavation day for your Oregon home project. Covers preparation, equipment arrival, noise levels, timelines, and what homeowners should do.
Soil Types in the Willamette Valley and How They Affect Construction
Understand the soil types found across the Willamette Valley and how they impact excavation, foundations, and construction. Covers clay loam, loess, Holcomb, and Calapooyia soils.