Business Details
50+ Years
experience
Trusted Construction Services in Riverside, CA
Jd Diffenbaugh has been a construction industry leader in Southern California for over six decades. Founded by John (Jay) Diffenbaugh, the company transitioned to third-generation leadership under CEO Jack Hawkins, Jr. in 1993. Our diverse portfolio spans Class A office buildings, K-12 and higher education facilities, industrial warehouses, healthcare centers, retail spaces, civic structures, worship facilities, hotels, and high-tech centers. We specialize in General Contracting, Design-Build, and Construction Management while maintaining a dedicated Special Projects Division for tenant improvements and renovations.Our commitment to Building Excellence drives every project through value engineering, BIM technology, and LEED-certified professionals. Safety remains our top priority, with strict compliance protocols ensuring secure work environments across all operations. With self-performing concrete capabilities and comprehensive preconstruction services, we deliver cost-effective solutions for projects of all scales.
Services
General Contracting
Design-Build
Construction Management
Preconstruction Services
Special Projects
LEED/Green Building
Details
- Year established: 1950
Highlights and features
- We offer 60+ years of construction experience across 8 industry sectors
- Our LEED-certified professionals deliver sustainable building solutions
- We maintain 100% OSHA compliance with zero tolerance for unsafe practices
- Our in-house BIM modeling prevents construction conflicts before work begins
- Special Projects Division handles complex renovations with fixed budget controls
Associations and certifications
- LEED
Services
General Contracting
As industry-leading general contractors with 60+ years' experience, we handle all construction methods from ground-up to tilt-up projects. Our hands-on experts deliver cost-effective solutions through value engineering while guaranteeing quality outcomes. We specialize in fast-tracking projects through efficient estimating and execution.
Design-Build
Our Design-Build services coordinate architects and consultants from project inception to ensure timely, budget-compliant delivery. With decade-long expertise in this methodology, we streamline communication between design teams and subcontractors to eliminate delays while maintaining construction quality standards.
Construction Management
As construction managers, we guide clients through design phases to align architectural plans with project requirements. Our team coordinates subcontractor bids, agency approvals, and construction schedules to guarantee successful project delivery meeting both budget and specification goals.
Preconstruction Services
Our preconstruction services optimize project outcomes through design evaluation, value engineering, and 3D BIM modeling. We provide detailed budgeting, phasing plans, and conflict detection to establish clear cost parameters before construction begins.
LEED/Green Building
With multiple LEED-accredited professionals on staff, we implement sustainable building practices that create environmentally responsible spaces. Our expertise in green construction methods delivers energy-efficient buildings while maintaining strict cost controls and quality standards.
People
Jack Hawkins, Jr.
CEO/Owner
Third-generation leader with 30+ years of construction industry experience. Serves as CEO and owner since 1993, guiding Jd Diffenbaugh's strategic growth while maintaining its founding commitment to quality and safety in commercial construction projects.
Questions
What construction services does J.D. Diffenbaugh offer?
We provide General Contracting, Design-Build, Construction Management, Preconstruction Services, Special Projects, and LEED-certified green building solutions across commercial, industrial, healthcare, and educational sectors.
How long has J.D. Diffenbaugh been in business?
Since 1950, making us a third-generation family-owned construction company with over 70 years of combined leadership experience in Southern California.
Do you handle both large and small construction projects?
Yes, our Special Projects Division manages small-to-medium renovations and tenant improvements alongside large-scale commercial developments through dedicated project teams.
What safety protocols do you follow?
We maintain 100% OSHA compliance with mandatory safety training, regular site inspections, and a strict policy prohibiting unsafe work practices. Safety takes priority over production in all operations.
Can you handle LEED-certified construction projects?
Yes, with multiple LEED-accredited professionals on staff and proven experience delivering Leadership in Energy & Environmental Design certified buildings using sustainable construction methods.
What technology do you use in construction projects?
We utilize Building Information Modeling (BIM) for 3D coordination of structural, mechanical, and electrical systems to detect conflicts before construction begins, improving efficiency and reducing costs.
