Trillium Architects is a 12 person, full service, boutique architectural firm specializing in Passive House, Net-Zero and off-the-grid new homes, additions, and renovations. Based in Ridgefield, Connecticut, we primarily work in Fairfield and Litchfield Counties in Connecticut and Westchester County in New York.

In 2015 and 2016 we won awards for Best Energy Efficient Home in America from the United States Green Building Council (USGBC) and the Department of Energy (DOE.) We won a Third Place International Innovation award which we accepted at the United Nations Framework Convention on Climate Change in Morocco in 2016, and we won Best Emerging Firm in Connecticut from the American Institute of Architects (AIA,) also in 2016.

With the end goal of marrying beauty, usability, and the cutting edge of efficient design, we strive to always exceed our clients’ expectations.

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We're planting new seeds! New location, bigger offices, more talent and resources. Come visit, or contact us to start your own #green dream! ⠀ LINK IN BIO⠀ ⠀ #greenbuilding #architecture #sustainability #ecofriendly #design #sustainable #sustainabledesign #sustainablearchitecture #sustainablebuilding #sustainableliving #trilliumarchitects #greenarchitecture

Trillium developed SEED homes to offer pre-designed prefab green homes in a predictable, cost-efficient and easy way. Learn more at LINK IN BIO⠀ #greenbuilding #architecture #build #sustainability #design #prefab #sustainablearchitecture #modularhome #netzero #passivehouse #trilliumarchitects #trilliumseed

Trillium's new office space is taking shape! (This is before we moved all of boxes of stuff over yesterday.) Stay tuned!

Your #greenhome can be pre-designed, prefab, cost efficient and healthy. Take a look at our SEED home designs! ⠀ LINK IN BIO⠀ ⠀ #greenbuilding #architecture #build #sustainability #design #prefab #sustainablearchitecture #modularhome #netzero #passivehouse #trilliumarchitects ⠀ #trilliumseed

Beautiful and sustainable in Stamford. We took cues from the family's Scandinavian heritage and used solid wood, natural light, clean lines & bright, soothing colors throughout. ⠀ LINK IN BIO⠀ ⠀ #pridemonth2021 #greenbuilding #architecture #sustainability #trilliumarchitects #design #sustainable #sustainabledesign #sustainablearchitecture #sustainablebuilding #sustainableliving #interiordesign #greenarchitecture

Thinking green? Planning a home or a renovation? Clarify your needs, wants and goals with our pre-design questionnaire! LINK IN BIO⠀ ⠀ #greenbuilding #architecture #sustainability #ecofriendly #design #sustainable #sustainabledesign #sustainablearchitecture #sustainablebuilding #sustainableliving #trilliumarchitects #greenarchitecture

Yes, it's #prefab. It's also healthy, #sustainable, super energy-efficient, cost efficient, low maintenance and filled with natural light. Meet our Red Fox SEED home at LINK IN BIO ⠀ ⠀ ⠀ ⠀ #greenbuilding #architecture #build #sustainability #design #prefab #sustainablearchitecture #modularhome #netzero #passivehouse #trilliumarchitects #trilliumseed

Trillium's SEED homes are pre-designed, prefab and super energy-efficient. But what do they cost? Learn more at LINK IN BIO - and call us to customize your own! ⠀ ⠀ ⠀ #greenbuilding #architecture #build #sustainability #design #prefab #sustainablearchitecture #modularhome #netzero #passivehouse #trilliumseed

This month, and every month, we recognize and applaud the LGBTQ+ pioneers in architecture and design who brought so many historical and important contributions to our field. LINK IN BIO ⠀ ⠀ #pridemonth2021 #greenbuilding #architecture #sustainability #ecofriendly #design #sustainable #sustainabledesign #sustainablearchitecture #sustainablebuilding #sustainableliving #interiordesign #greenarchitecture

Our SEED #prefab homes are super energy-efficient, sustainable & healthy houses in the 800 sf to 4,000 sf range. View our designs on the LINK IN BIO, and write your favorite model in the comments! ⠀ ⠀ ⠀ #greenbuilding #architecture #build #sustainability #design #prefab #sustainablearchitecture #modularhome #netzero #trilliumseed