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14 Years
experience
Net-Zero & Passive House Architects in Dennis, MA
A3 Architects is a full-service architectural firm specializing in net energy zero design, passive house design, and environmentally sensitive construction on Cape Cod. Since 2012, we have designed numerous net-zero new construction homes and completed renovations and additions in historic village centers and rural sites. Our collaborative approach prioritizes creating functional spaces for clients ranging from single homeowners to commercial organizations. We specialize in integrating modern and traditional designs with local vernacular influences, from historic sea captains' homes to contemporary summer houses. Our expertise extends to flood zone construction, historic preservation, and energy-efficient systems, including LEED Platinum certifications and Energy Star for Homes compliance.

We guide clients through every project phase, from initial site meetings to construction supervision, ensuring regulatory compliance and sustainable outcomes. Our work with local nonprofits, such as the Association to Preserve Cape Cod, demonstrates our commitment to community and environmental stewardship. We utilize advanced energy modeling, HERS Index ratings, and passive solar strategies to achieve ultra-low energy consumption. Our team excels in balancing historic preservation with modern efficiency, as seen in our renovations of 1700s-era homes and accessory dwelling units. Contact us to explore how our expertise can bring your architectural vision to life.
Services
Net-Zero Design Passive House Architecture Historic Renovations LEED Certification Consulting Energy Star Compliance
Details
  • Year established: 2012
Highlights and features
  • We specialize in net-zero and passive house design since 2012.
  • Our team holds LEED Platinum certifications for sustainable development.
  • We combine historic preservation with cutting-edge energy efficiency.
  • We utilize HERS Index ratings to optimize building performance.
  • Our projects prioritize flood zone resilience and local architectural harmony.
Associations and certifications
  • LEED Platinum
  • Energy Star for Homes
  • Passive House Institute US (PHIUS)
Services
Net-Zero Design
Our net-zero design services create homes that produce as much energy as they consume. We integrate solar panels, super insulation, and energy modeling to achieve HERS Index scores of 0. Projects include modern and traditional styles tailored to Cape Cod's climate and regulations.
Passive House
Passive House designs reduce energy use by 90% through air-tight construction, thermal bridge-free detailing, and solar heat gain optimization. We use PHPP software to model performance, ensuring compliance with rigorous international standards while adapting to local building codes.
Historic Renovations
We specialize in renovating historic Cape Cod homes, including 1700s-era structures. Our approach balances preservation with modern efficiency, incorporating flood zone resilience and energy-efficient systems while maintaining architectural integrity and local vernacular aesthetics.
LEED Certification
Our LEED Platinum-certified projects meet comprehensive sustainability criteria, including energy efficiency, water conservation, and material sourcing. We guide clients through LEED for Homes requirements, achieving high-performance outcomes like 65% construction waste diversion in recent developments.
Energy Star Compliance
We implement Energy Star for Homes guidelines, combining design-phase energy modeling with construction-phase diagnostics like blower door tests. This ensures homes exceed code requirements, achieving HERS scores as low as the upper 20s for ultra-efficient performance.
Questions
What types of projects does A3 Architects specialize in?
We focus on net-zero homes, passive house designs, historic renovations, and LEED-certified developments on Cape Cod.
How does A3 Architects ensure energy efficiency?
We use HERS Index modeling, Energy Star guidelines, and Passive House standards to optimize insulation, ventilation, and renewable energy integration.
Can A3 work on historic properties?
Yes, we specialize in renovating historic Cape Cod homes while incorporating modern energy-efficient systems and flood resilience.
Do you offer LEED certification services?
Yes, we guide projects through LEED for Homes certification, achieving Platinum-level results with waste diversion and sustainable materials.
What areas do you serve?
We primarily serve Cape Cod towns including Dennis, Barnstable, Chatham, Hyannis, and Wellfleet.
How do you collaborate with clients?
We use visioning charrettes, 3D modeling, and regulatory expertise to align designs with client needs and local zoning requirements.