Sean O'Kane AIA, Architect P.C. is an architectural firm specializing in custom residential design, new homes, additions, renovations, and historic restoration. The firm, established in 1986, is located on historic Main Street in Ridgefield, CT and has worked on many diverse projects located throughout Connecticut, New York City and State, Pennsylvania and Rhode Island.

At Sean O’Kane AIA, a very individual approach to design is taken, with personal involvement from the initial client meeting to project completion. Exceptional attention to detail is of the utmost importance while working to fulfill the client’s needs and desires. From site planning through final hardware and tile selection, all aspects of the project design are thought out in advance before they are executed. Regular site visits to check on the progress and quality of the work and consulting with contractors on a daily basis enables Sean O’Kane AIA to see that the firm’s designs and client’s wishes are implemented to achieve the highest quality possible.

Historic Restoration

The Northeast is rich in history and communities that care about maintaining the fabric of where they live. As a firm, Sean O’Kane AIA Architect PC is committed to preserving this ideal. The firm has been working with the Keeler Tavern Museum and History Center in Ridgefield since 1983 to help them in their efforts to preserve their historic buildings and create a vision for expanding the facilities. The museum is listed on the National Registry of Historic Places. As residential work also is a large part of the firm’s commissions, we take great pride in having worked on many new and existing homes within historic districts in Connecticut and Rhode Island. The same attention to detail is taken as we work to fulfill the client’s needs and desires while respecting the past.

Community Involvement

Sean O’Kane AIA Architect PC enjoys giving back to the community through pro bono work and involvement with non profit groups. In addition to working with the Keeler Tavern Museum and History Center and helping to promote the museum as an important part of the Ridgefield Community, the firm also designed the local animal shelter for cats and dogs. The ROAR (Ridgefield Operation for Animal Rescue) Shelter was so successful that a few years later we designed an addition that doubled the size of the original building.



President and founder of the firm, Mr. O’Kane received his BSC Architecture from Queens University Belfast and his graduate degree in 1979 from Heriot Watt University, Edinburgh Scotland. Mr. O’Kane emigrated to the USA after graduation, working in New Hampshire on adaptive reuse and historic preservation projects. In 1981 he moved to Ridgefield, CT and after practicing in Rye with a firm for five years, left to establish his own firm. Mr. O’Kane is a member of the American Institute of Architects, the Institute for Classical Architecture, the Connecticut Trust for Historic Preservation, a board member of the Ridgefield Historic District Commission and has been a registered architect in Connecticut since 1983.


Mr. Adamski received a Bachelor of Architecture in 1986 from the University of Minnesota-Twin Cities. Before moving to Connecticut in 1993, he worked in a Minneapolis firm specializing in the restoration of historical buildings. Mr. Adamski has been a member of the firm since 1994 and is a registered architect in the states of Connecticut, Rhode Island and New York.


Crystal Chandler received a B.S. in Building Sciences from Rensselaer Polytechnic Institute in Troy, New York in 2001. She is a registered architect, a member of the American Institute of Architects and a LEED Green Associate. She has been with the firm since 2001.


"Sean, Crystal, Rich and the team have subtly blended new renovations into the classic architecture of our 1904 Victorian in a way that has increased its functionality and aesthetic features. In addition to great architecture, they keep cost and efficient project management in the forefront. They are a pleasure to work with."


"Sean is a great talent. My wife and I worked with Sean and his team on three distinct and very different projects with two different general contractors. In the redo of our Manhattan apartment he was very aware and respectful towards the historic 1920’s building elements, and our redone apartment looked like an original.

In our homes in Connecticut he demonstrated a wonderful affinity for the natural landscape while designing two very different style buildings.

In all cases the attention to detail was what made the projects so successful."