Meet The Team

Gregg has spent the last forty years as an Industrial and Commercial Real Estate Contractor and Developer in Southern California, specializing in green building. His zero-carbon footprint, concrete house in Julian, called “StoneHaven,” won the 2015 ACI Award for Excellence in Construction. Gregg has also been the founder and/or part owner of numerous other businesses including an aluminum extrusion company, a surgical glove manufacturing company and various food-related businesses. He has numerous business interests in Mexico and East Asia.

Gregg has been a member of the International Palm Society since 1990. His 1.5 acre garden in El Cajon boasts around 600 species of palms and cycads from all around the world. His interests include music (oboe, English Horn, piano and harp), scuba diving, underwater photography, hiking (with an emphasis on native plants) and travel.

Chad serves as Chief Operating Officer at Hamann Construction, where he focuses on delivering high-quality projects, strengthening teams, and supporting the growth of San Diego communities the company serves. He is passionate about building organizations that operate with clarity, accountability, and collaboration, enabling people to perform at their highest level.

Chad brings a diverse background in construction, electrical contracting, engineering, and business leadership. He holds a Mechanical Engineering degree from Purdue University and an MBA from San Diego State University. Earlier in his career, he held leadership roles within the aerospace industry, helping guide engineering and operations teams responsible for complex technical projects.

As the founder of Caliber Contracting San Diego, Chad built a company specializing in remodels, ADUs, solar, and electrical upgrades. That experience reinforced his belief that construction is ultimately about people and partnerships.

Outside of work, Chad enjoys spending time with his family, coaching high school basketball, and supporting local business, church, and community organizations throughout San Diego.

Mario has been with Hamann for 15+ years as a Journeyman and Lead man completing and running 20+ projects. Mario was promoted to Hamann’s Estimator and coordinates all estimating and bidding. Prior to Hamann Mario served 8 years in the Marine Corps working in multiple countries.

Jake has spent time in every field in the New Construction division, including apprentice, carpenter, foreman, superintendent, estimator, and project manager. He leverages his field experience by creating cost savings for Hamann clients and driving projects to completion. Jake is also an entrepreneur with a successful tax business and a veteran in the US Army as an Airborne Combat Medic.

Luke has managed over $100 million in construction renovation and previously worked for the largest privately held property management company in California. He has an MBA with emphasis in Finance. In his spare time he enjoys surfing, hiking, and spending time with his wife.

Bob’s brother introduced him to construction while working for a tilt-up contractor in Orange County in June 1978. Bob joined Hamann after 5 years in construction and has been in the trade for over 40 years. Bob is one of Hamann’s most senior superintendents with over 120 buildings and 5.5 million sq/ft built under his leadership. Bob won a Tilt-Up Achievement Award in 2012 and has an Environmental Engineering degree from UC Santa Barbara. He aspires to develop younger technicians and plans to finish his career at Hamann.

Frankie earned a baseball scholarship and graduated with a degree in Sports Medicine. While he was evaluating several career options, one of his siblings (also a Hamann superintendent) piqued his interest in the company. Frankie joined and has been with Hamann for 15 years. His diligence and focus on excellence always leave clients extremely pleased with his work.

Frank has been in the trade and with Hamann for 16 years. He runs and manages all concrete pours under Hamann’s purview.

Victor’s construction experience spans almost 15 years. His proven delivery and execution make him a great leader and outstanding superintendent for Hamann.

Rick has 21 years in the construction industry and has been with Hamann 5 years working as a foreman
and then superintendent. Prior to joining Hamann he ran a precast facility. Outside of work Rick enjoys
time with family and recently became a proud grandfather.

Amanda has 17 years of experience in Payroll/HR/Accounting, 7 of which were under the Hamann umbrella of companies. She now serves as Hamann Construction’s Manager of Finance and oversees all back office duties.

Amanda enjoys national park road trips with her two boys and her husband.

Tim Fisher is an Accounting Specialist with eight years of experience in bringing order to chaos for startups and small businesses. At Hamann, he is responsible for managing Accounts Payable, financial audits, and maintaining accurate financial records. Always ready for a challenge, Tim uses his positive attitude and proactive nature to solve problems and help others succeed. In his free time, Tim likes to cycle, run, or enjoy leisurely walks on the beach with his wife.

Teresa is the Administrative Assistant for Hamann Companies. She brings 15+ years of administrative, accounting, and property management experience. Teresa managed a portfolio of properties for 12 years, working with Boards and Owners to manage assets, maintain a favorable financial position and develop long-term goals. She obtained professional credentials in property management and conducted training programs.

Teresa provides excellent service with a high level of professionalism as she maintains successful business relationships. She has lived and worked abroad and done volunteer work, both in the U.S. and internationally. Teresa enjoys traveling, hiking, and exploring.

Derwin started wiring track homes for his stepdad right out of high school. He has been in the trade for 36 years and with Hamann for 22 years. He is an early bird and usually first in the office at 4am. Derwin is an Electrical & Solar Superintendent and manages a variety of special projects for Hamann. His goal would be to retire at Hamann or work for one of their many other businesses.

Joel has been in the trade for over 10 years, 8 of which were with Hamann. In addition to being a Superintendent, Joel is also learning estimating for the Electrical Division. His goal is to able to build his own house someday.

Mario got started in the trade 22 years ago via way of his father. He has been with Hamann 5 years. As a foreman for the electric team Mario manages jobs ranging from new construction to building rehab and maintenance.

Michael leads the Electrical and Solar design for Hamann. He is passionate about photography and videography and hopes to start a professional company for video production in the future.

Aaron has 23 years of experience working in a variety of trades. Aaron has been with Hamann Construction five years as a Superintendent for the Tenant Improvement Division and manages projects ranging from 500 sq/ft to 50,000 sq/ft.

Mark started his construction career by shoveling gravel as a laborer, then carrying lumber. An older carpenter told him to buy some nail bags and he wouldn’t have to carry so much lumber. Mark bought the bags, became a carpenter, a superintendent, and then project manager. He started in construction in 1987 and has been with Hamann for over 25 years.

A fun fact about Mark – in 1984 he was a paper boy for The Daily Californian when they were located in what is now Hamann’s headquarters on Pioneer way. He says it’s possible he’ll start and end his career in the same building. Mark desires to honor God in his work.

Jose started working for Hamann construction in 1995. In 2009, following the steps of his mentor Joe Graves, Jose became a superintendent. Since becoming a superintendent Jose has lead 20+ projects for both new construction and the TI division. Jose is happy to say that Hamann construction has been able to keep him busy and challenged with new projects for the last 26 years, which says a lot about Hamann Construction as a company.