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ZeroEnergy DesignThis LEED Platinum certified house reflects the homeowner's desire for an exceptionally healthy and comfortable living environment, within a traditional neighborhood.
INFILL SITE. The family, who moved from another area of Wellesley, sought out this property to be within walking distance of the high school and downtown area. An existing structure on the tight lot was removed to make way for the new home. 84% of the construction waste, from both the previous structure and the new home, was diverted from a landfill. ZED designed to preserve the existing mature trees on the perimeter of the property to minimize site impacts, and to maintain the character of the neighborhood as well as privacy on the site.
EXTERIOR EXPRESSION. The street facade of the home relates to the local New England vernacular. The rear uses contemporary language, a nod to the family’s Californian roots, to incorporate a roof deck, solar panels, outdoor living space, and the backyard swimming pool. ZED’s careful planning avoided to the need to face the garage doors towards the street, a common syndrome of a narrow lot.
THOUGHTFUL SPACE. Homes with dual entries can often result in duplicate and unused spaces. In this home, the everyday and formal entry areas are one and the same; the front and garage doors share the entry program of coat closets, mudroom storage with bench for removing your shoes, and a laundry room with generous closets for the children's sporting equipment. The entry area leads directly to the living space, encompassing the kitchen, dining and sitting area areas in an L-shaped open plan arrangement. The kitchen is placed at the south-west corner of the space to allow for a strong connection to the dining, sitting and outdoor living spaces. A fire pit on the deck satisfies the family’s desire for an open flame while a sealed gas fireplace is used indoors - ZED’s preference after omitting gas burning appliances completely from an airtight home. A small study, with a window seat, is conveniently located just off of the living space. A first floor guest bedroom includes an accessible bathroom for aging visitors and can be used as a master suite to accommodate aging in place.
HEALTHY LIVING. The client requested a home that was easy to clean and would provide a respite from seasonal allergies and common contaminants that are found in many indoor spaces. ZED selected easy to clean solid surface flooring throughout, provided ample space for cleaning supplies on each floor, and designed a mechanical system with ventilation that provides a constant supply of fresh outdoor air. ZED selected durable materials, finishes, cabinetry, and casework with low or no volatile organic compounds (VOCs) and no added urea formaldehyde.
YEAR-ROUND COMFORT. The home is super insulated and air-tight, paired with high performance triple-paned windows, to ensure it is draft-free throughout the winter (even when in front of the large windows and doors). ZED designed a right-sized heating and cooling system to pair with the thermally improved building enclosure to ensure year-round comfort. The glazing on the home maximizes passive solar gains, and facilitates cross ventilation and daylighting.
ENERGY EFFICIENT. As one of the most energy efficient houses built to date in Wellesley, the home highlights a practical solution for Massachusetts. First, the building enclosure reduces the largest energy requirement for typical houses (heating). Super-insulation, exceptional air sealing, a thermally broken wall assembly, triple pane windows, and passive solar gain combine for a sizable heating load reduction. Second, within the house only efficient systems consume energy. These include an air source heat pump for heating & cooling, a heat pump hot water heater, LED lighting, energy recovery ventilation, and high efficiency appliances. Lastly, photovoltaics provide renewable energy help offset energy consumption. The result is an 89% reduction in energy use compared to a similar brand new home built to code requirements.
RESILIENT. The home will fare well in extreme weather events. During a winter power outage, heat loss will be very slow due to the super-insulated and airtight envelope– taking multiple days to drop to 60 degrees even with no heat source. An engineered drainage system, paired with careful the detailing of the foundation, will help to keep the finished basement dry. A generator will provide full operation of the all-electric house during a power outage.
OVERALL. The home is a reflection of the family goals and an expression of their values, beautifully enabling health, comfort, safety, resilience, and utility, all while respecting the planet.
ZED - Architect & Mechanical Designer
Bevilacqua Builders Inc - Contractor
Creative Land & Water Engineering - Civil Engineering
Barbara Peterson Landscape - Landscape Design
Nest & Company - Interior Furnishings
Eric Roth Photography - Photography
HELTThis lakefront diamond in the rough lot was waiting to be discovered by someone with a modern naturalistic vision and passion. Maintaining an eco-friendly, and sustainable build was at the top of the client priority list. Designed and situated to benefit from passive and active solar as well as through breezes from the lake, this indoor/outdoor living space truly establishes a symbiotic relationship with its natural surroundings. The pie-shaped lot provided significant challenges with a street width of 50ft, a steep shoreline buffer of 50ft, as well as a powerline easement reducing the buildable area. The client desired a smaller home of approximately 2500sf that juxtaposed modern lines with the free form of the natural setting. The 250ft of lakefront afforded 180-degree views which guided the design to maximize this vantage point while supporting the adjacent environment through preservation of heritage trees. Prior to construction the shoreline buffer had been rewilded with wildflowers, perennials, utilization of clover and meadow grasses to support healthy animal and insect re-population. The inclusion of solar panels as well as hydroponic heated floors and wood stove supported the owner’s desire to be self-sufficient. Core ten steel was selected as the predominant material to allow it to “rust” as it weathers thus blending into the natural environment.
John Cole ArchitectThe goal set by the owners, a couple with farm family backgrounds, for a vacation and ultimately retirement home on 30 acres in the Mount Washington Valley was a high performance, low maintenance, Greek Revival inspired farmstead. The program included an open plan living/dining/kitchen area, first floor master suite, open and screen porches, mudroom, second floor guest bedrooms, and a barn to house farm equipment, recreational vehicles and a bocce court.
The building envelope includes continuously insulated R-32 walls, R-60 roof, R-18 foundation walls, and R-20 under the basement slab. Dense packed cellulose in wall and roof assemblies minimized the use of spray foam. A blower door test of 0.76 ACH50 confirmed a tightly constructed envelope. Traditional details, using non-traditional synthetic and composite products, were developed to clad the exterior and a 23 kW PV array was added to the south facing barn roof.
Energy efficient heating and cooling systems, along with balanced ventilation using an energy recovery ventilator (ERV), were integrated with the interiors. The second floor hallway is partitioned off from the stair to reduce heating and cooling loads when the guest rooms aren’t occupied. All LED lighting, including a cove light tucked into custom ceiling moldings, and Energy Star appliances reduced the electrical load. Two 30-yard containers of wood, plastic and cardboard were recycled during construction. The home achieved a HERS (Home Energy Rating System) rating of -30 (negative 30!), an order of magnitude below the 52 HERS average for New Hampshire and climate zone 6A in 2020. The electric meter has been running backward since the project was completed.
The result is a home that is healthy, comfortable, durable, and efficient, with electricity produced on site that more than offsets its use of fossil fuels.
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The Rinfret GroupExample of a mid-sized transitional freestanding desk dark wood floor and brown floor study room design in New York with beige walls and no fireplace
AJW Designs, Inc.Christina Wedge Photography
Great room - mid-sized transitional light wood floor and beige floor great room idea with no fireplace and beige walls
Great room - mid-sized transitional light wood floor and beige floor great room idea with no fireplace and beige walls
Sustainable Design GroupThis 3,300 square foot, LEED Platinum, Zero Energy Home sits on a hill with a beautiful view of rural Frederick County. The walls are Aerated Autoclaved Concrete (AAC). Deep overhangs and careful siting maximize passive solar heating and natural cooling; all south facing glazing has a very low U value and high solar heat gain coefficient to maximize solar heat in the winter. The East, North and West windows also have a very low U values and low solar heat gain coefficient to reduce cooling load. Systems include 4.3 kW solar, 1.8 kW wind turbine, batteries for backup power, geothermal heating and cooling, Energy recovery ventilation and 3000 gallons of rainwater collection.
HELTThis lakefront diamond in the rough lot was waiting to be discovered by someone with a modern naturalistic vision and passion. Maintaining an eco-friendly, and sustainable build was at the top of the client priority list. Designed and situated to benefit from passive and active solar as well as through breezes from the lake, this indoor/outdoor living space truly establishes a symbiotic relationship with its natural surroundings. The pie-shaped lot provided significant challenges with a street width of 50ft, a steep shoreline buffer of 50ft, as well as a powerline easement reducing the buildable area. The client desired a smaller home of approximately 2500sf that juxtaposed modern lines with the free form of the natural setting. The 250ft of lakefront afforded 180-degree views which guided the design to maximize this vantage point while supporting the adjacent environment through preservation of heritage trees. Prior to construction the shoreline buffer had been rewilded with wildflowers, perennials, utilization of clover and meadow grasses to support healthy animal and insect re-population. The inclusion of solar panels as well as hydroponic heated floors and wood stove supported the owner’s desire to be self-sufficient. Core ten steel was selected as the predominant material to allow it to “rust” as it weathers thus blending into the natural environment.
Sustainable Design GroupThis 3,300 square foot, LEED Platinum, Zero Energy Home sits on a hill with a beautiful view of rural Frederick County. The walls are Aerated Autoclaved Concrete (AAC). Deep overhangs and careful siting maximize passive solar heating and natural cooling; all south facing glazing has a very low U value and high solar heat gain coefficient to maximize solar heat in the winter. The East, North and West windows also have a very low U values and low solar heat gain coefficient to reduce cooling load. Systems include 4.3 kW solar, 1.8 kW wind turbine, batteries for backup power, geothermal heating and cooling, Energy recovery ventilation and 3000 gallons of rainwater collection.
HELTThis lakefront diamond in the rough lot was waiting to be discovered by someone with a modern naturalistic vision and passion. Maintaining an eco-friendly, and sustainable build was at the top of the client priority list. Designed and situated to benefit from passive and active solar as well as through breezes from the lake, this indoor/outdoor living space truly establishes a symbiotic relationship with its natural surroundings. The pie-shaped lot provided significant challenges with a street width of 50ft, a steep shoreline buffer of 50ft, as well as a powerline easement reducing the buildable area. The client desired a smaller home of approximately 2500sf that juxtaposed modern lines with the free form of the natural setting. The 250ft of lakefront afforded 180-degree views which guided the design to maximize this vantage point while supporting the adjacent environment through preservation of heritage trees. Prior to construction the shoreline buffer had been rewilded with wildflowers, perennials, utilization of clover and meadow grasses to support healthy animal and insect re-population. The inclusion of solar panels as well as hydroponic heated floors and wood stove supported the owner’s desire to be self-sufficient. Core ten steel was selected as the predominant material to allow it to “rust” as it weathers thus blending into the natural environment.
ZeroEnergy DesignLincoln Farmhouse
LEED-H Platinum, Net-Positive Energy
OVERVIEW. This LEED Platinum certified modern farmhouse ties into the cultural landscape of Lincoln, Massachusetts - a town known for its rich history, farming traditions, conservation efforts, and visionary architecture. The goal was to design and build a new single family home on 1.8 acres that respects the neighborhood’s agrarian roots, produces more energy than it consumes, and provides the family with flexible spaces to live-play-work-entertain. The resulting 2,800 SF home is proof that families do not need to compromise on style, space or comfort in a highly energy-efficient and healthy home.
CONNECTION TO NATURE. The attached garage is ubiquitous in new construction in New England’s cold climate. This home’s barn-inspired garage is intentionally detached from the main dwelling. A covered walkway connects the two structures, creating an intentional connection with the outdoors between auto and home.
FUNCTIONAL FLEXIBILITY. With a modest footprint, each space must serve a specific use, but also be flexible for atypical scenarios. The Mudroom serves everyday use for the couple and their children, but is also easy to tidy up to receive guests, eliminating the need for two entries found in most homes. A workspace is conveniently located off the mudroom; it looks out on to the back yard to supervise the children and can be closed off with a sliding door when not in use. The Away Room opens up to the Living Room for everyday use; it can be closed off with its oversized pocket door for secondary use as a guest bedroom with en suite bath.
NET POSITIVE ENERGY. The all-electric home consumes 70% less energy than a code-built house, and with measured energy data produces 48% more energy annually than it consumes, making it a 'net positive' home. Thick walls and roofs lack thermal bridging, windows are high performance, triple-glazed, and a continuous air barrier yields minimal leakage (0.27ACH50) making the home among the tightest in the US. Systems include an air source heat pump, an energy recovery ventilator, and a 13.1kW photovoltaic system to offset consumption and support future electric cars.
ACTUAL PERFORMANCE. -6.3 kBtu/sf/yr Energy Use Intensity (Actual monitored project data reported for the firm’s 2016 AIA 2030 Commitment. Average single family home is 52.0 kBtu/sf/yr.)
o 10,900 kwh total consumption (8.5 kbtu/ft2 EUI)
o 16,200 kwh total production
o 5,300 kwh net surplus, equivalent to 15,000-25,000 electric car miles per year. 48% net positive.
WATER EFFICIENCY. Plumbing fixtures and water closets consume a mere 60% of the federal standard, while high efficiency appliances such as the dishwasher and clothes washer also reduce consumption rates.
FOOD PRODUCTION. After clearing all invasive species, apple, pear, peach and cherry trees were planted. Future plans include blueberry, raspberry and strawberry bushes, along with raised beds for vegetable gardening. The house also offers a below ground root cellar, built outside the home's thermal envelope, to gain the passive benefit of long term energy-free food storage.
RESILIENCY. The home's ability to weather unforeseen challenges is predictable - it will fare well. The super-insulated envelope means during a winter storm with power outage, heat loss will be slow - taking days to drop to 60 degrees even with no heat source. During normal conditions, reduced energy consumption plus energy production means shelter from the burden of utility costs. Surplus production can power electric cars & appliances. The home exceeds snow & wind structural requirements, plus far surpasses standard construction for long term durability planning.
ARCHITECT: ZeroEnergy Design http://zeroenergy.com/lincoln-farmhouse
CONTRACTOR: Thoughtforms http://thoughtforms-corp.com/
PHOTOGRAPHER: Chuck Choi http://www.chuckchoi.com/
Cascade BuiltCLTHouse is one Washington’s first homes of its kind. Constructed using Passive House techniques and built to exceed BUILT GREEN 4*requirements, the single-family home will deliver healthy indoor air, thermal comfort and easy accessibility to the city. Designed by atelierjones, the Madison Park home is built using cross laminate timber (CLT), a high performance material composed of layered wood and non-toxic glue to maximize energy efficiency, reduce waste and increase structural durability. The unique 1,485sf, 3bd/2ba home will feature a stunning cantilevered second story to provide space for the ground-level carport paved with salvaged foundation bricks, shou sugi ban fir siding and a rooftop terrace with neighborhood views and built-in planters for urban gardening.
Images courtesy Lara Swimmer Photography
Sustainable Design GroupThis 3,300 square foot, LEED Platinum, Zero Energy Home sits on a hill with a beautiful view of rural Frederick County. The walls are Aerated Autoclaved Concrete (AAC). Deep overhangs and careful siting maximize passive solar heating and natural cooling; all south facing glazing has a very low U value and high solar heat gain coefficient to maximize solar heat in the winter. The East, North and West windows also have a very low U values and low solar heat gain coefficient to reduce cooling load. Systems include 4.3 kW solar, 1.8 kW wind turbine, batteries for backup power, geothermal heating and cooling, Energy recovery ventilation and 3000 gallons of rainwater collection.
Sustainable Design GroupThis 3,300 square foot, LEED Platinum, Zero Energy Home sits on a hill with a beautiful view of rural Frederick County. The walls are Aerated Autoclaved Concrete (AAC). Deep overhangs and careful siting maximize passive solar heating and natural cooling; all south facing glazing has a very low U value and high solar heat gain coefficient to maximize solar heat in the winter. The East, North and West windows also have a very low U values and low solar heat gain coefficient to reduce cooling load. Systems include 4.3 kW solar, 1.8 kW wind turbine, batteries for backup power, geothermal heating and cooling, Energy recovery ventilation and 3000 gallons of rainwater collection.
Sustainable Design GroupThis 3,300 square foot, LEED Platinum, Zero Energy Home sits on a hill with a beautiful view of rural Frederick County. The walls are Aerated Autoclaved Concrete (AAC). Deep overhangs and careful siting maximize passive solar heating and natural cooling; all south facing glazing has a very low U value and high solar heat gain coefficient to maximize solar heat in the winter. The East, North and West windows also have a very low U values and low solar heat gain coefficient to reduce cooling load. Systems include 4.3 kW solar, 1.8 kW wind turbine, batteries for backup power, geothermal heating and cooling, Energy recovery ventilation and 3000 gallons of rainwater collection.
Sustainable Design GroupThis 3,300 square foot, LEED Platinum, Zero Energy Home sits on a hill with a beautiful view of rural Frederick County. The walls are Aerated Autoclaved Concrete (AAC). Deep overhangs and careful siting maximize passive solar heating and natural cooling; all south facing glazing has a very low U value and high solar heat gain coefficient to maximize solar heat in the winter. The East, North and West windows also have a very low U values and low solar heat gain coefficient to reduce cooling load. Systems include 4.3 kW solar, 1.8 kW wind turbine, batteries for backup power, geothermal heating and cooling, Energy recovery ventilation and 3000 gallons of rainwater collection.
Sustainable Design GroupThis 3,300 square foot, LEED Platinum, Zero Energy Home sits on a hill with a beautiful view of rural Frederick County. The walls are Aerated Autoclaved Concrete (AAC). Deep overhangs and careful siting maximize passive solar heating and natural cooling; all south facing glazing has a very low U value and high solar heat gain coefficient to maximize solar heat in the winter. The East, North and West windows also have a very low U values and low solar heat gain coefficient to reduce cooling load. Systems include 4.3 kW solar, 1.8 kW wind turbine, batteries for backup power, geothermal heating and cooling, Energy recovery ventilation and 3000 gallons of rainwater collection.
Sustainable Design GroupThis 3,300 square foot, LEED Platinum, Zero Energy Home sits on a hill with a beautiful view of rural Frederick County. The walls are Aerated Autoclaved Concrete (AAC). Deep overhangs and careful siting maximize passive solar heating and natural cooling; all south facing glazing has a very low U value and high solar heat gain coefficient to maximize solar heat in the winter. The East, North and West windows also have a very low U values and low solar heat gain coefficient to reduce cooling load. Systems include 4.3 kW solar, 1.8 kW wind turbine, batteries for backup power, geothermal heating and cooling, Energy recovery ventilation and 3000 gallons of rainwater collection.
Sustainable Design GroupThis 3,300 square foot, LEED Platinum, Zero Energy Home sits on a hill with a beautiful view of rural Frederick County. The walls are Aerated Autoclaved Concrete (AAC). Deep overhangs and careful siting maximize passive solar heating and natural cooling; all south facing glazing has a very low U value and high solar heat gain coefficient to maximize solar heat in the winter. The East, North and West windows also have a very low U values and low solar heat gain coefficient to reduce cooling load. Systems include 4.3 kW solar, 1.8 kW wind turbine, batteries for backup power, geothermal heating and cooling, Energy recovery ventilation and 3000 gallons of rainwater collection.
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