THE PARTNERS
THE PARTNERS
ANDREW CASAZZA
PARTNER | MANAGING PARTNER
Andrew facilitates and oversees daily operations of the commercial real estate, construction management and development activities. Prior
to founding Holcomb, Andrew worked for a Grosse Pointe Farms based real estate development and construction management company for over a decade. He has a bachelor’s degree in business administration
– finance from Wayne State University and is a licensed builder. Andrew is passionate about sustainable and affordable building techniques and solutions. He is a member of the board of trustees for the Grosse Pointe Farms Foundation and the Grosse Pointe Crisis Club. He resides in Grosse Pointe Farms with his wife Ellie and their golden retriever Lucy. He is an active sailor and enjoys racing on the Great Lakes in the summer.
ANDREW CASAZZA
PARTNER | MANAGING PARTNER
Andrew facilitates and oversees daily operations of the commercial real estate, construction management and development activities. Prior
to founding Holcomb, Andrew worked for a Grosse Pointe Farms based real estate development and construction management company for over a decade. He has a bachelor’s degree in business administration
– finance from Wayne State University and is a licensed builder. Andrew is passionate about sustainable and affordable building techniques and solutions. He is a member of the board of trustees for the Grosse Pointe Farms Foundation and the Grosse Pointe Crisis Club. He resides in Grosse Pointe Farms with his wife Ellie and their golden retriever Lucy. He is an active sailor and enjoys racing on the Great Lakes in the summer.
JAMIE MERTZ
PARTNER | DIRECTOR OF ARCHITECTURE AND DESIGN
Jamie facilitates and oversees the architectural and design operations for the company. Jamie works with our in-house design department and extensive outside engineering, architectural and design partners to deliver timely and beautiful design for construction management clients. Beyond this role, Jamie manages construction administration for our real estate development projects. Prior to founding Holcomb, Jamie owned and operated a renowned commercial and residential design firm located in Grosse Pointe, delivering design and architectural services nationwide. He studied architecture at the University of Colorado at Boulder and Lawrence Tech University. Jamie is passionate about traditional design and mass timber construction. He resides in Grosse Pointe Farms with his wife Heather, children Jane and Henry, and their black lab Louie. Jamie is an avid fly-fisherman and enjoys fishing on Michigan’s many rivers in all seasons.
JAMIE MERTZ
PARTNER | DIRECTOR OF ARCHITECTURE AND DESIGN
Jamie facilitates and oversees the architectural and design operations for the company. Jamie works with our in-house design department and extensive outside engineering, architectural and design partners to deliver timely and beautiful design for construction management clients. Beyond this role, Jamie manages construction administration for our real estate development projects. Prior to founding Holcomb, Jamie owned and operated a renowned commercial and residential design firm located in Grosse Pointe, delivering design and architectural services nationwide. He studied architecture at the University of Colorado at Boulder and Lawrence Tech University. Jamie is passionate about traditional design and mass timber construction. He resides in Grosse Pointe Farms with his wife Heather, children Jane and Henry, and their black lab Louie. Jamie is an avid fly-fisherman and enjoys fishing on Michigan’s many rivers in all seasons.
GENE CASAZZA
PARTNER | DIRECTOR OF CONSTRUCTION
Gene facilitates and oversees daily construction activities and on-site construction management and development work. Gene works with our large sub-contractor network and in-house construction team to deliver quality projects on budget and on time. Prior to founding Holcomb, Gene worked for a Grosse Pointe Farms-based real estate development and construction management company for over 15 years. Previously, he was an award-winning commercial real estate broker, and he has extensive experience in property management and lease negotiations. Gene has a bachelor’s degree in computer information systems from Siena Heights University. He is a licensed builder and has completed 30 hours of OSHA's construction-safety training. He resides in Grosse Pointe Farms with his fiance Marisa, children Elliott, Graham & Charlotte, and their dogs Roxy and Harry. Gene enjoys cooking and has an avid interest in the restaurants new and old throughout Detroit.
GENE CASAZZA
PARTNER | DIRECTOR OF CONSTRUCTION
Gene facilitates and oversees daily construction activities and on-site construction management and development work. Gene works with our large sub-contractor network and in-house construction team to deliver quality projects on budget and on time. Prior to founding Holcomb, Gene worked for a Grosse Pointe Farms-based real estate development and construction management company for over 15 years. Previously, he was an award-winning commercial real estate broker, and he has extensive experience in property management and lease negotiations. Gene has a bachelor’s degree in computer information systems from Siena Heights University. He is a licensed builder and has completed 30 hours of OSHA's construction-safety training. He resides in Grosse Pointe Farms with his fiance Marisa, children Elliott, Graham & Charlotte, and their dogs Roxy and Harry. Gene enjoys cooking and has an avid interest in the restaurants new and old throughout Detroit.
JARED CANTIN
PARTNER | FIELD OPERATIONS
Jared facilitates and oversees our on-site personnel and day to day project management. Jared works with our large sub-contractor network and in-house construction team to deliver quality projects on budget and on time. Prior to joining Holcomb Development, Jared was a successful general contractor in the Metro-Detroit area, and spent 21 years as a union carpenter for some of Michigan’s largest general contractors. It is with this in-depth knowledge of the industry that Jared is able to manage and ensure quality across many disciplines and with our staff. He is a licensed builder and has completed his 30 hours of OSHA's construction safety training. He resides in Grosse Pointe Farms with his wife Mary, and three children. Jared enjoys boating on Lake St. Clair in the summer and spending time at his cottage in on Huron's Canadian shore.
JARED CANTIN
PARTNER | FIELD OPERATIONS
Jared facilitates and oversees our on-site personnel and day to day project management. Jared works with our large sub-contractor network and in-house construction team to deliver quality projects on budget and on time. Prior to joining Holcomb Development, Jared was a successful general contractor in the Metro-Detroit area, and spent 21 years as a union carpenter for some of Michigan’s largest general contractors. It is with this in-depth knowledge of the industry that Jared is able to manage and ensure quality across many disciplines and with our staff. He is a licensed builder and has completed his 30 hours of OSHA's construction safety training. He resides in Grosse Pointe Farms with his wife Mary, and three children. Jared enjoys boating on Lake St. Clair in the summer and spending time at his cottage in on Huron's Canadian shore.
OUR TEAM
OUR TEAM
CHRISTIAN LEINNINGER
TITLE
MIKE DUKER
TITLE
ELLEN CASAZZA
OFFICE MANAGER
CHRISTIAN LEINNINGER
TITLE
MIKE DUKER
TITLE
ELLEN CASAZZA
OFFICE MANAGER
MATT LELLI
ARCHITECT
BECCA PRIESTER
INTERIOR DESIGNER
ALEX DECARIE
TITLE
MATT LELLI
ARCHITECT
BECCA PRIESTER
INTERIOR DESIGNER
ALEX DECARIE
TITLE
JOHN WALTON
TITLE
GARY BROWNELL
TITLE
JOHN WALTON
TITLE
GARY BROWNELL
TITLE
THE PARTNERS
ANDREW CASAZZA
PARTNER | MANAGING PARTNER
Andrew facilitates and oversees daily operations of the commercial real estate, construction management and development activities. Prior
to founding Holcomb, Andrew worked for a Grosse Pointe Farms based real estate development and construction management company for over a decade. He has a bachelor’s degree in business administration
– finance from Wayne State University and is a licensed builder. Andrew is passionate about sustainable and affordable building techniques and solutions. He is a member of the board of trustees for the Grosse Pointe Farms Foundation and the Grosse Pointe Crisis Club. He resides in Grosse Pointe Farms with his wife Ellie and their golden retriever Lucy. He is an active sailor and enjoys racing on the Great Lakes in the summer.
ANDREW CASAZZA
PARTNER | MANAGING PARTNER
Andrew facilitates and oversees daily operations of the commercial real estate, construction management and development activities. Prior
to founding Holcomb, Andrew worked for a Grosse Pointe Farms based real estate development and construction management company for over a decade. He has a bachelor’s degree in business administration
– finance from Wayne State University and is a licensed builder. Andrew is passionate about sustainable and affordable building techniques and solutions. He is a member of the board of trustees for the Grosse Pointe Farms Foundation and the Grosse Pointe Crisis Club. He resides in Grosse Pointe Farms with his wife Ellie and their golden retriever Lucy. He is an active sailor and enjoys racing on the Great Lakes in the summer.
JAMIE MERTZ
PARTNER | DIRECTOR OF ARCHITECTURE AND DESIGN
Jamie facilitates and oversees the architectural and design operations for the company. Jamie works with our in-house design department and extensive outside engineering, architectural and design partners to deliver timely and beautiful design for construction management clients. Beyond this role, Jamie manages construction administration for our real estate development projects. Prior to founding Holcomb, Jamie owned and operated a renowned commercial and residential design firm located in Grosse Pointe, delivering design and architectural services nationwide. He studied architecture at the University of Colorado at Boulder and Lawrence Tech University. Jamie is passionate about traditional design and mass timber construction. He resides in Grosse Pointe Farms with his wife Heather, children Jane and Henry, and their black lab Louie. Jamie is an avid fly-fisherman and enjoys fishing on Michigan’s many rivers in all seasons.
JAMIE MERTZ
PARTNER | DIRECTOR OF ARCHITECTURE AND DESIGN
Jamie facilitates and oversees the architectural and design operations for the company. Jamie works with our in-house design department and extensive outside engineering, architectural and design partners to deliver timely and beautiful design for construction management clients. Beyond this role, Jamie manages construction administration for our real estate development projects. Prior to founding Holcomb, Jamie owned and operated a renowned commercial and residential design firm located in Grosse Pointe, delivering design and architectural services nationwide. He studied architecture at the University of Colorado at Boulder and Lawrence Tech University. Jamie is passionate about traditional design and mass timber construction. He resides in Grosse Pointe Farms with his wife Heather, children Jane and Henry, and their black lab Louie. Jamie is an avid fly-fisherman and enjoys fishing on Michigan’s many rivers in all seasons.
GENE CASAZZA
PARTNER | DIRECTOR OF CONSTRUCTION
Gene facilitates and oversees daily construction activities and on-site construction management and development work. Gene works with our large sub-contractor network and in-house construction team to deliver quality projects on budget and on time. Prior to founding Holcomb, Gene worked for a Grosse Pointe Farms-based real estate development and construction management company for over 15 years. Previously, he was an award-winning commercial real estate broker, and he has extensive experience in property management and lease negotiations. Gene has a bachelor’s degree in computer information systems from Siena Heights University. He is a licensed builder and has completed 30 hours of OSHA's construction-safety training. He resides in Grosse Pointe Farms with his fiance Marisa, children Elliott, Graham & Charlotte, and their dogs Roxy and Harry. Gene enjoys cooking and has an avid interest in the restaurants new and old throughout Detroit.
GENE CASAZZA
PARTNER | DIRECTOR OF CONSTRUCTION
Gene facilitates and oversees daily construction activities and on-site construction management and development work. Gene works with our large sub-contractor network and in-house construction team to deliver quality projects on budget and on time. Prior to founding Holcomb, Gene worked for a Grosse Pointe Farms-based real estate development and construction management company for over 15 years. Previously, he was an award-winning commercial real estate broker, and he has extensive experience in property management and lease negotiations. Gene has a bachelor’s degree in computer information systems from Siena Heights University. He is a licensed builder and has completed 30 hours of OSHA's construction-safety training. He resides in Grosse Pointe Farms with his fiance Marisa, children Elliott, Graham & Charlotte, and their dogs Roxy and Harry. Gene enjoys cooking and has an avid interest in the restaurants new and old throughout Detroit.
JARED CANTIN
PARTNER | FIELD OPERATIONS
Jared facilitates and oversees our on-site personnel and day to day project management. Jared works with our large sub-contractor network and in-house construction team to deliver quality projects on budget and on time. Prior to joining Holcomb Development, Jared was a successful general contractor in the Metro-Detroit area, and spent 21 years as a union carpenter for some of Michigan’s largest general contractors. It is with this in-depth knowledge of the industry that Jared is able to manage and ensure quality across many disciplines and with our staff. He is a licensed builder and has completed his 30 hours of OSHA's construction safety training. He resides in Grosse Pointe Farms with his wife Mary, and three children. Jared enjoys boating on Lake St. Clair in the summer and spending time at his cottage in on Huron's Canadian shore.
JARED CANTIN
PARTNER | FIELD OPERATIONS
Jared facilitates and oversees our on-site personnel and day to day project management. Jared works with our large sub-contractor network and in-house construction team to deliver quality projects on budget and on time. Prior to joining Holcomb Development, Jared was a successful general contractor in the Metro-Detroit area, and spent 21 years as a union carpenter for some of Michigan’s largest general contractors. It is with this in-depth knowledge of the industry that Jared is able to manage and ensure quality across many disciplines and with our staff. He is a licensed builder and has completed his 30 hours of OSHA's construction safety training. He resides in Grosse Pointe Farms with his wife Mary, and three children. Jared enjoys boating on Lake St. Clair in the summer and spending time at his cottage in on Huron's Canadian shore.
OUR TEAM
CHRISTIAN LEINNINGER
TITLE
MIKE DUKER
TITLE
ELLEN CASAZZA
OFFICE MANAGER
CHRISTIAN LEINNINGER
TITLE
MIKE DUKER
TITLE
ELLEN CASAZZA
OFFICE MANAGER
MATT LELLI
ARCHITECT
BECCA PRIESTER
INTERIOR DESIGNER
ALEX DECARIE
TITLE
MATT LELLI
ARCHITECT
BECCA PRIESTER
INTERIOR DESIGNER
ALEX DECARIE
TITLE
JOHN WALTON
TITLE
GARY BROWNELL
TITLE
JOHN WALTON
TITLE
GARY BROWNELL
TITLE