BPC Green Builders ✓
Company Background
Pioneering sustainable, high-performance green homes in Connecticut and New York since 1998
About BPC Green Builders
Founded in 1998 by brothers Mike and Chris Trolle, BPC Green Builders was one of the very first builders in Connecticut to specialize in high-performance, sustainable green homes. Now a worker-owned cooperative, BPC is widely recognized as the leading custom green builder in Connecticut and adjoining areas of New York State, having completed 69 of the highest-performing and most energy-efficient custom home projects in New England, including 42 new homes and 27 deep energy renovations.
The Edgecraft Philosophy
BPC’s approach, called Edgecraft, fuses bleeding-edge building science with meticulous craftsmanship. This means designing vapor, thermal, and air barriers that align visually, creating mechanical systems that are both efficient and predictably comfortable, and selecting healthy, durable materials that support family well-being. At BPC, it’s not enough for a home to test well in performance metrics—it also has to feel right, look right, and last for generations.
Deep Energy Retrofit Expertise
BPC transforms existing houses into homes that provide similar high-performance benefits to new construction through Deep Green Retrofitting. This process involves changes to the home’s envelope, heating, cooling, ventilation, and hot water system upgrades, plus the use of green building materials throughout. BPC offers no-cost evaluations of your existing home’s potential for a green retrofit, providing guidance on certification standards so you can set the right goals for energy efficiency, sustainability, health, and comfort.
Award-Winning Certifications
BPC homes meet or exceed established green building certification requirements that far surpass local building codes. The company has pioneered adoption of programs including Energy Star, LEED for Homes, DOE Zero Energy Ready, and PHIUS Passive House. In 2015, a BPC faculty home for the Taft School won the top national award from the USGBC. Their commitment to staying on the cutting edge extends to using building materials with less embodied carbon and natural plant-based materials that act as carbon sinks.
Green Building Services
Comprehensive high-performance home construction and retrofit solutions
Deep Energy Retrofits
Transform your existing home into a high-performance green home with envelope upgrades, HVAC improvements, and sustainable materials. BPC’s retrofit expertise delivers exceptional energy efficiency and comfort.
Custom Green Home Construction
New custom homes built to the highest green building standards, featuring superior energy efficiency, healthy indoor environments, and sustainable materials that last for generations.
Zero Energy Ready Homes
DOE Zero Energy Ready certified homes designed to produce as much energy as they consume, with ultra-efficient envelopes, high-performance HVAC, and solar-ready infrastructure.
Passive House Certified
PHIUS-certified Passive House construction achieving the world’s most rigorous energy efficiency standards through superior insulation, airtight construction, and heat recovery ventilation.
LEED Certified Homes
USGBC LEED for Homes certified construction delivering sustainable, resource-efficient, and healthy living environments verified by independent third-party certification.
Whole House Renovations
Complete home renovations integrating deep green retrofits with interior reconfigurations and additions, maximizing efficiency while minimizing waste and duplication of effort.
Leadership Team
Pioneering green building in Connecticut for over 25 years
Michael N. Trolle
Mike Trolle founded BPC Green Builders in 1998, becoming one of Connecticut’s first green building specialists. He pioneered adoption of Energy Star, Health House, LEED, and Passive House certifications in the region. Mike built the first ALA Health House in Connecticut and the Northeast in 2000, earning feature coverage in the New York Times and Connecticut Magazine. His commitment to building science excellence and continuous learning has kept BPC at the cutting edge of sustainable construction for over 25 years.
Christopher T. Trolle
Chris Trolle joined BPC in 2000, bringing extensive mechanical engineering, consulting, and construction management experience. As a certified Home Energy Rating System (HERS) rater, Chris provides testing, inspection, and consulting services for homes seeking Energy Star and other certifications. His engineering expertise in thermal envelopes and HVAC system optimization has helped BPC clients achieve exceptional energy performance while reducing equipment costs. Chris manages project delivery for new custom homes and deep energy retrofits.
Service Areas
Green building services throughout Connecticut and adjoining New York State
Fairfield County, CT
Serving Westport, Greenwich, Stamford, Darien, New Canaan, Wilton, Ridgefield, and surrounding Fairfield County communities with green retrofits and new construction.
Litchfield County, CT
Headquartered in Newtown, serving Litchfield County including Washington, Roxbury, Woodbury, Bethlehem, and the scenic northwest hills of Connecticut.
New Haven County, CT
Deep energy retrofits and custom green homes throughout New Haven County, from the shoreline communities to inland towns.
Westchester County, NY
Extending services into adjoining New York State, serving Westchester County homeowners seeking high-performance green building solutions.
Putnam County, NY
Green building expertise available in Putnam County and the Hudson Valley region of New York for discerning homeowners.
Greater Connecticut
Custom projects considered throughout Connecticut for clients committed to high-performance, sustainable green building.
Frequently Asked Questions
Common questions about energy efficient retrofits and green home construction with BPC
Energy Efficient Retrofit Questions
Essential information about deep green retrofits and whole house renovations
What is a deep energy retrofit and why choose BPC Green Builders?
A deep energy retrofit transforms an existing home into a high-performance green home through comprehensive envelope improvements, HVAC upgrades, and sustainable material selections. BPC Green Builders has completed 27 deep energy retrofits over 25+ years, making them Connecticut’s most experienced green retrofit specialists. Their Edgecraft approach combines cutting-edge building science with meticulous craftsmanship to deliver homes that are energy efficient, comfortable, healthy, and built to last generations.
Can my existing home be converted into a certified green home?
The primary requirement is whether your home’s “envelope” (walls, floors, foundation, and ceilings separating conditioned from unconditioned spaces) can be reconfigured cost-effectively. BPC offers no-cost evaluations of your home’s green potential and will discuss the type and magnitude of renovations needed to meet your goals for energy efficiency, sustainability, health, air quality, and durability.
What certifications can a BPC retrofit achieve?
Depending on your home and goals, BPC retrofits can achieve certifications including Energy Star, DOE Zero Energy Ready, PHIUS Passive House, LEED for Homes, and National Green Building Standard. BPC was among the first builders in Connecticut to achieve each of these certifications and can guide you on which standards are appropriate and achievable for your specific home.
Should I combine a retrofit with a whole house renovation?
Yes, undertaking a deep green retrofit is the ideal time to renovate your entire home, and vice versa. Because of overlaps in what is done for each, combining a whole house renovation with a deep green energy retrofit reduces costs, duplication of effort, waste, time, and money compared to approaching them as separate projects. BPC specializes in integrating both for maximum efficiency and value.
What makes BPC different from other contractors?
BPC Green Builders is a worker-owned cooperative with over 25 years specializing exclusively in high-performance green building. Their team includes certified Passive House consultants, HERS raters, and engineers with specialized training in building science. They’ve pioneered adoption of the strictest green building standards in Connecticut, won national awards including the USGBC’s top honor, and maintain a commitment to using low-embodied-carbon and natural plant-based materials.
Client & Industry Recognition
What clients, architects, and industry professionals say about BPC Green Builders
Resources & Getting Started
Learn more about green retrofits and BPC’s approach to sustainable building
