Business Details
50+ Years
experience
Your Trusted Construction Partner in Corvallis, OR
Founded in 1970 by Bob Grant Sr., our company has built a legacy of excellence in construction, rooted in craftsmanship, integrity, and community commitment. Under the leadership of John Slingluff Sr., who acquired the business in 2016, we continue to uphold the core values established by the Grant family while driving strategic growth and innovation. Our approach emphasizes balancing cost, schedule, and budget considerations to deliver high-quality, cost-effective projects that meet client needs. With over five decades of experience, we specialize in commercial, residential, industrial, and historical restoration projects across the Pacific Northwest.Our teams hands-on ingenuity and passion for construction ensure seamless project execution, from design to completion. We prioritize transparency, reliability, and long-term relationships with clients, subcontractors, and suppliers. As stewards of our community, we combine local expertise with a commitment to sustainability and excellence. Every project reflects our dedication to transforming visions into reality while fostering career growth for our employees. Our reputation for integrity and quality has made us a trusted partner for clients seeking exceptional construction solutions.
Services
Commercial Construction
Residential Additions
Industrial Contractors
Historical Restoration
Maintenance Services
Design-Build Projects
Pre-Construction Planning
Details
- Year established: 1970
Highlights and features
- We have over 50 years of experience in construction management and contracting.
- Our team-driven approach ensures collaborative success and tailored solutions.
- We balance cost, schedule, and budget considerations for optimal project outcomes.
- Our commitment to community and client trust spans five decades.
- We offer comprehensive services from design to construction in multiple sectors.
Associations and certifications
- U.S. Green Building Council
- Restore Oregon
What people say
Exceeded expectations
Exceptional communication
Hands-on ingenuity
Team-driven approach
Dedicated and professional
Services
Commercial Construction
We specialize in full-service commercial construction for retail, banks, medical facilities, and restaurants. Our expertise ensures timely, budget-conscious projects ranging from 1,000 to 100,000 square feet. Clients benefit from our hands-on management and tailored solutions for national brands and local businesses.
Residential Additions
From first-floor additions to basement conversions, we create functional living spaces that enhance home value. Our team combines craftsmanship with practical design to address unique architectural challenges. Clients receive personalized guidance to align expansions with lifestyle needs and budget constraints.
Industrial Contractors
We deliver industrial construction solutions for energy plants, food processing facilities, and manufacturing centers. Strict adherence to safety and efficiency standards ensures reliable infrastructure. Our experience spans pre-engineered buildings to complex systems integration for Oregons industrial clients.
Historical Restoration
We specialize in restoring historically significant structures while maintaining modern functionality. Services include preventive maintenance and LEED-certified upgrades. Recognized by Restore Oregon, our work preserves architectural legacy through precise craftsmanship and sustainable practices.
Maintenance Services
We provide comprehensive repairs for real estate owners, including dry rot remediation and balcony renovations. Our proactive approach extends property lifespan while ensuring safety. Clients rely on us for rapid turnaround on multi-unit and high-rise maintenance projects across Oregon.
People
John Slingluff Sr.
Owner / General Manager
John Slingluff Sr. acquired Bob Grant Construction in 2016, building on its legacy while driving strategic growth. With prior roles as Senior Estimator and General Manager, he combines hands-on expertise with leadership to ensure client satisfaction and operational excellence.
Bob Grant Jr.
Former Owner
Bob Grant Jr. led the company after its founding by his father, maintaining its reputation for quality. He transitioned ownership to John Slingluff in 2016, ensuring continuity of the firms core values while enabling future expansion.
Questions
What regions does Bob Grant Construction serve?
We serve clients throughout the Willamette Valley and Pacific Northwest, including Corvallis, Eugene, and Medford, Oregon.
What types of construction projects do you specialize in?
We specialize in commercial, residential, industrial, and historical restoration projects, offering tailored solutions from design to completion.
Can you handle both small repairs and large-scale developments?
Yes, our expertise spans single-family home repairs to multi-family complexes and large industrial facilities, ensuring quality at every scale.
Are you licensed and accredited for construction in Oregon?
We hold Contractor License #29318 through the Oregon Construction Contractors Board and partner with organizations like USGBC for LEED-certified projects.
How do you ensure projects stay on budget and schedule?
Our team integrates cost, schedule, and quality management from pre-construction planning through execution to minimize delays and budget overruns.
What sets Bob Grant Construction apart from other contractors?
Five decades of local expertise, a family-owned commitment to integrity, and a collaborative approach that prioritizes client needs and community impact.
