Business Details
50+ Years
experience
Trusted Construction & Property Management Services
Hamann Construction has served San Diego and Riverside Counties as a leading construction and property management firm since 1954. Founded by R.D. Hamann and now led by fourth-generation leaders Jeffery C. Hamann and Gregg Hamann, we specialize in tilt-up industrial construction, tenant improvements, and green building solutions. Our team has completed over 50 million square feet of commercial, industrial, religious, and educational structures ranging from 5,000 to 350,000 square feet.With in-house architectural design capabilities and a focus on LEED certification, we deliver cost-effective, energy-efficient buildings tailored to client needs. Our long-term property ownership perspective informs intelligent design choices that reduce maintenance costs. Backed by a California State Electrical Contractors license and decades of experience, we combine generational wisdom with modern innovation to ensure client satisfaction.
Services
Commercial Construction
Tenant Improvement
Solar Installations
Land Development
Property Management
Electrical Services
Industrial Buildings
Green Building
Concrete Tilt-Up
Energy Storage
Details
- Year established: 1954
Highlights and features
- Fourth-generation construction expertise since 1954
- In-house architectural design and permitting specialists
- LEED-certified green building specialists
- Completed 50+ million sq ft of commercial projects
- Integrated property ownership informs cost-effective design
Services
Commercial Construction
We specialize in constructing large-scale commercial and industrial facilities using tilt-up concrete methods. Our projects range from 5,000 to 350,000 square feet, serving clients needing warehouses, distribution centers, and manufacturing plants. With over 70 years of experience, we deliver durable, cost-effective structures that meet exact business requirements.
Tenant Improvement
Our TI division handles projects from $20k to $3M+, transforming existing spaces for modern business needs. We manage complete building remodels or smaller office refreshes while minimizing operational disruption. Our team ensures code compliance and optimized space utilization for commercial tenants.
Solar Installations
Hamann Solar offers rooftop systems and carport shade structures with battery storage solutions. We provide PPA financing options and cash purchase alternatives for commercial clients seeking energy cost reduction. Our 12+ MW of installed solar capacity demonstrates expertise in scalable renewable energy implementations.
Land Development
We develop industrial land parcels for build-to-suit opportunities across San Diego and Riverside Counties. Our 280+ acres of available land includes sites in Otay Mesa, Murrieta, and El Cajon. We coordinate site preparation and infrastructure development to support client-specific construction projects.
Property Management
Our full-service team manages millions of square feet of commercial/industrial properties throughout Southern California. Services include maintenance coordination, tenant relations, and operational oversight for office parks, industrial complexes, and investment properties.
People
Gregg Hamann
President
Fourth-generation construction leader with 40+ years in industrial real estate. Developed award-winning green buildings and owns 500+ palm species in El Cajon garden.
Matthew Sanders
Chief Operating Officer
Former Fortune 100 consultant who stabilized $150M+ food distribution company. Holds finance degree from Baylor and Lean Six Sigma certification. Oversees Hamann's operational strategy.
Paul Giese
Chief Architect
25+ year architectural veteran coordinating design teams for commercial projects. Graduated from Cal Poly SLO in 1980 with expertise in construction documentation and client coordination.
Rich Anderson
Vice President Solar & Electrical
Licensed electrical contractor managing solar and electrical divisions. Holds Title 24 lighting certification. Oversees design and installation of energy-efficient systems.
Aaron Armstrong
Vice President Tenant Improvement
20-year process improvement specialist leading TI division since 2019. Focuses on client communication and project delivery optimization. Certified canine training specialist.
Questions
What construction services does Hamann offer?
We provide commercial/industrial new construction, tenant improvements, solar installations, electrical services, and land development across Southern California.
Do you offer financing options for solar projects?
Yes, we offer PPA financing with no upfront costs and cash purchase options for commercial solar installations.
How long has Hamann been in business?
Since 1954, making us a fourth-generation San Diego construction company with 70+ years of local experience.
What areas do you serve?
Primarily San Diego and Riverside Counties, with property development opportunities in Otay Mesa, Murrieta, and El Cajon regions.
Can you handle large-scale industrial projects?
Yes, we've built over 50 million sq ft of structures up to 350,000 sq ft with specialized expertise in tilt-up concrete construction.
