"Sebastian is one of the best - if not the best - general contractors with whom Robert A. M. Stern Architects (RAMSA) has had the privilege to work with in our private residential practice. John Sebastian, his staff and his crews have a deep understanding and command of the skill sets, management and quality control required to build technically complex, meticulously detailed houses and residential compounds."

Roger H. Seifter
Partner
RAMSA

"My personal training of many years under I. M. Pei created a very high level of expectation on both craft and assembly, to very tight tolerance levels, which is difficult to find in the residential market....We have worked with many contractors over the past 35 years and have built projects in 24 countries around the world. John Sebastian and his team have unparalleled success in their project type of the high end custom residential division."

Timothy B. Blonkvist, FAIA LEED
Founder/Chairman
Overland Partners Architects

"Artisanship permeates throughout their culture as they 'group' together to execute the vision of architects and owners. Their understanding of materials and processes pushes the architect to even greater understanding of the possibilities of design."

David Stocker, AIA
Principal
SHM Architects

"I have known John Sebastian and the Sebastian Construction Group for over twenty-five years and I still consider them to be the best of the best…. Under the leadership of John Sebastian, the Sebastian Construction group continues to be the one of the best contractors in the country. His dedication to excellence and craftsmanship are the ideals that make the Sebastian Construction Group so special."

Russell Buchanan, FAIA
Founder
Buchanan Architecture

"As a design-driven firm, we appreciated Sebastian Construction Group's ability to adapt to design changes and their design sensitivity. As an out-of-state architect, we trusted their project team to ensure that the workmanship was up to par and reflected our design intent, which they exceeded. They were creative and resourceful and brought solutions to the table, rather than problems."

Kirby Lee, AIA
Principal
Backen & Gillam Architects

"Project management is a key area that sets this company apart. They are remarkable at executing effectively and securing multiple trades to ensure the project runs smoothly without interruption. They go above and beyond to find the experts to achieve the most unique architectural details for a project."

Svend Christian Fruit, AIA
Principal & Co-Founder
Bodron / Fruit

"Sebastian not only follows the details in detail, but often makes suggestions that improve the weatherability, solidity, and economy of the details....The remarkable thing about John Sebastian's organization is that he has somehow figured out a way to orchestrate a large organization to function at the high level of a small shop."

Max Levy, FAIA
Founder
Max Levy Architect