Certified Grading Contractor in Portland, OR
As a COBID Oregon Certified Emerging Small Business with memberships in local commercial associations, Wallace Construction Company provides professional grading services meeting engineering standards throughout Portland, OR. Our certified operators deliver precision grading for commercial developments, industrial facilities, and construction projects across the greater Portland area. From rough grading establishing site elevations to fine grading creating smooth surfaces, we handle every aspect of site grading in-house. With deep understanding of Oregon’s climate conditions and engineering requirements, we deliver grading solutions that contractors, developers, and engineers trust for complex projects in Beaverton, Hillsboro, Lake Oswego, and surrounding communities.
What Grading Services Include
Grading creates precise site elevations and surface preparations ensuring proper drainage, structural support, and construction readiness. Our grading services establish grades meeting engineering specifications throughout Oregon.
Grading services include:
- Rough Grading – Establishing primary site elevations and drainage patterns per engineering plans
- Fine Grading – Creating smooth, precise surfaces ready for paving, building construction, or landscaping
- Finish Grading – Final surface preparation meeting tight tolerance requirements for concrete paving and structures
- Site Grading – Overall property grading ensuring proper water flow and site functionality
- Parking Lot Grading – Base preparation for asphalt pavement with proper drainage slopes and elevations
Our Grading Process
Wallace Construction Company follows systematic grading methods ensuring accuracy and engineering compliance in Portland, OR:
- Plan Review & Verification – We verify grade elevations, drainage slopes, and engineering specifications before mobilizing equipment to your site
- Site Control Establishment – Our crews establish reference points and benchmarks ensuring accurate elevation control throughout grading operations
- Rough Grading Operations – We establish overall site elevations and primary drainage patterns using modern dozers and motor graders
- Fine Grading Execution – We create smooth, precise surfaces meeting engineering tolerances for construction readiness
- Compaction & Verification – We compact graded surfaces and verify proper density through field testing and independent lab testing when required
- Final Inspection Coordination – We coordinate with engineers and inspectors ensuring grading meets specifications and passes required inspections
Benefits of Professional Grading in Portland, OR
Commercial properties and developments throughout Portland, Tigard, Scappoose, and Forest Grove require grading that meets engineering standards and ensures long-term site performance.
Professional grading delivers:
- Accurate Elevations – Precision grading ensures proper building pad heights, pavement depths, and structural foundation levels
- Drainage Performance – Proper slopes and grades prevent water accumulation, protecting structures and pavement from moisture damage
- Engineering Compliance – Work meeting specifications passes inspections and prevents costly rework or project delays
- Structural Support – Properly graded and compacted surfaces provide stable foundations for buildings and improvements
- Cost Control – Accurate grading eliminates material waste and rework, keeping site preparation costs predictable
Why Choose Wallace Construction Company
Engineers, general contractors, and developers throughout the Portland metro area select Wallace Construction Company for grading requiring certification, precision, and professional execution.
- COBID Oregon Certification – As a Certified Emerging Small Business, we meet professional standards government agencies and contractors require
- Commercial Association Membership – We participate in local commercial associations, maintaining industry connections and professional standards
- Certified Operators – Our grading crews include experienced operators trained in precision equipment operation and quality control
- In-House Grading Capabilities – We perform all grading with our own teams and equipment, ensuring accountability from start to completion
- Engineering Coordination – We work closely with civil engineers and surveyors ensuring grades meet design intent and specifications
- Top-Tier Guarantee – Our commitment to grading quality is backed by one of the leading warranties in the greater Portland area
Frequently Asked Questions
What’s the difference between rough and fine grading?
Rough grading establishes overall site elevations and drainage patterns—it’s the first major grading after earthwork. Fine grading creates precise, smooth surfaces within tight tolerances, preparing sites for paving, concrete work, or building construction.
How do you ensure proper drainage in grading?
We follow engineering plans precisely, creating slopes that direct water away from buildings and toward drainage systems. Our operators monitor grades throughout work, ensuring positive drainage and preventing water accumulation across Portland sites.
Do you provide compaction testing for grading?
Yes, we perform field density testing verifying proper compaction of graded surfaces. We can arrange independent testing if required by your engineer or building department throughout Oregon.
What grading tolerances can you achieve?
For rough grading, we work within 0.1-foot tolerances. Fine grading achieves tighter tolerances of 0.05 feet or better, depending on project requirements and surface type throughout the Portland area.
How long does site grading take?
Timeline varies by site size and complexity—a small commercial lot may take 2-3 days for complete grading, while large development sites can require 1-2 weeks depending on acreage and grade changes in Oregon.
Do you handle grading for building additions?
Yes, we grade around existing structures and improvements, carefully matching existing grades and ensuring proper drainage. We work in tight spaces and coordinate with ongoing construction activities.
Contact Wallace Construction Company
For certified grading services in Portland, Beaverton, Hillsboro, Lake Oswego, or throughout Oregon’s greater Portland region, contact Wallace Construction Company at (503) 395-7222. Our COBID-certified team delivers precision grading for commercial developments and construction projects with attention to engineering specifications and quality standards. From rough grading to fine grading, we provide the professional execution contractors, developers, and engineers depend on.
Service Areas: Portland, Lake Oswego, Beaverton, Hillsboro, Scappoose, Reedville, Tigard, St Helens, King City, Cedar Hills, North Plains, Forest Grove, Banks, and Cornelius, Oregon.
