green home design

Acton Passive House Achieves PHIUS+ Certification

ZED’s new home in Acton is now officially a PHIUS+ 2018 & Source Zero Certified Project! This 1,650 SF residence was constructed for small operational impact, vastly reduced embodied energy, and energy efficiency. In addition, rooftop solar panels will produce enough energy to arrive at net zero or net positive energy.

Passive Home certification requires very precise and tighter construction than what is used for typical built-to-code homes. The result is an exceptionally tranquil living space that is comfortable year-round, provides excellent air quality, and has extremely low energy use. ZED and contractor Adams & Beasley are incredibly proud of this achievement.

Source Zero is an additional recognition that advances community goals of carbon neutrality and climate resilience at the project level. Achieving PHIUS+ means dramatically reducing demand; achieving PHIUS+ Source Zero means meeting the small remainder with on-site renewable energy.

The Passive House Building Energy Standard is the most rigorous building energy standard in the world

In Progress: Net Zero sanctuary in Westport

ZED is nearing completion of a new energy efficient residence in Westport, MA. The design, which features two gable-roofed structures set in an open meadow, was inspired by the agrarian aesthetic of the area, creating a zen-like sanctuary for the owners.  

The client, a soon to be retired couple from Wayland, chose to relocate to Westport to find more community and gain more consistent access to the outdoors. They also desired a home with minimal energy consumption, minimal maintenance, and exceptional durability, with net zero or better performance. 

Lofty Spaces and Outdoor Connections.  ZED created a home consisting of two formal gray masses with natural material connections - a primary residence and detached barn-like garage connected by a covered walkway. The three-bedroom main house is open concept and window-filled, the entire home meant to feel like one giant room. The spacious kitchen flows into the living/dining room, which benefits from double-height ceilings, ample windows and giant lift/slide glass doors. On the other side of those doors is a large awning and shading device that helps filter out light and heat, as well as a substantive deck for outdoor entertaining.

Rooms Designed for Openness and Flexibility. One enters the primary bedroom on the second floor through a wide cased opening, making it feel completely open and seamlessly connected to the rest of the house. The two ‘guest’ rooms were designed to be adaptable, either as home offices, guest bedrooms, or exercise rooms. Additionally, the first-floor bedroom can be easily transformed into the primary bedroom suite, should the owners desire moving downstairs as they age in place. The two-car garage brings plenty of versatility as well, providing room for vehicle and outdoor equipment storage, a workshop, or ’tinkering’ space, and multi-purpose loft. 

Net Zero Energy Performance. The electric home was designed to be in line with net-zero or net-positive energy performance, featuring a super insulated enclosure, triple-glazed windows, air source heat pumps, balanced mechanical ventilation with heat and energy recovery, plus a large 51-panel solar array to offset energy consumption. Embodied energy was reduced by using minimal foam, wood fiber continuous exterior insulation, loose-fill cellulose for the roof, and mineral wool interior insulation on basement walls; the garage is not heated, utilizing only mineral wool in the wall cavities. These performance features, combined with the minimalist design, result in an exceptionally peaceful environment for the owners.

A floating staircase with a gentle rise provides access to the second floor

Living/dining room features lots of light

Large lift/slide doors open to the outside

The primary bedroom is open to the rest of the house through a large cased opening

Detached garage with covered connection

Covered passageway to garage

The addition of the orange awning and shading device will help filter out summer light and heat

In Progress: Acton Passive House

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New Home Targeting Passive House Certification. This newly constructed home nestled in the Acton woods is an exercise in restraint, simplicity and form, all working together to create a stylish, environmentally sensitive residence. The home is Passive House (PHIUS) pre-certified and is on its way to receiving full Passive House certification. As construction nears completion, we take a look at the blend of features that were carefully balanced to create a tranquil indoor environment with an efficient footprint. 

Designed for Respite from the City. ZED was engaged to design this custom home as a primary residence for the client, who desired quiet and respite from urban life. The client envisioned a combined living/kitchen/dining room as the home’s nexus, which we designed with a wall of continuous glass that wraps the southeast corner of the house, connecting the interior to the natural surroundings. The rest of the home’s 1,650 SF rectangular footprint is composed of two bedrooms, two bathrooms, an office and mechanical/laundry room, all of which follow a simple, modern aesthetic – polished concrete floors, minimalist fixtures, and glazed so as not to have to turn on a single light during the day.

Constructed for Small Operational Impact. Adhering to the Passive House standard means that this Acton home will have incredibly low operational energy. A floating raft of insulation beneath the concrete foundation, known as a mono form EZ slab, creates a thermal break as well as a form for the concrete slab. To complete the airtight foundation, Stego Wrap was installed as a vapor barrier before the concrete was poured. Construction wasn’t easy, interrupted more than once by major snowstorms and high winds, but contractor Adams + Beasley was up to the task, weathering the challenging elements without compromising on the super insulated envelope or energy features.

This Acton residence is a Pre-Certified Passive House (PHIUS+) and will target Passive House Certification once completed

This Acton residence is a Pre-Certified Passive House (PHIUS+) and will target Passive House Certification once completed

Vastly Reduced Embodied Energy. For the home’s walls, wood fiber continuous exterior insulation, combined with dense pack cellulose in the wall cavities, was used - not only is wood fiber 100% compostable at the end of its life, but also exceptional for acoustic insulation and fire safety. Air tightness was achieved through a continuous exterior air/water barrier. An 18-inch truss of dense pack cellulose was used to insulate the top-vented shed roof, minimizing the use of foam. Since there is no basement, there was far less concrete used to construct the foundation, meaning less embodied energy. The home also faces due south, so there will be exceptional solar access for the photovoltaic panels, which will produce enough electricity to arrive at net zero or net positive energy.

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Check out More Construction Imagery and Time Lapse Video from Adams + Beasley’s Portfolio Page.

Brookline Masked Modern - New Case Study - Custom Home Design

ZED is pleased to release our latest Custom Home Design Case Study - the Brookline Masked Modern home in Brookline, Massachusetts. Architecture and Mechanical Design by ZED.

Listed in the National Register of Historic Places in the Fisher Hill neighborhood, the home was originally built as a stable for a larger estate before it was relocated and converted to a residence in the 1920s. ZED’s new design revisions the space to better suit a growing family of five and creates a comfortable and environmentally sensible place to live with modern aesthetics, plenty of natural light, and multiple outdoor recreational spaces - all while preserving the historic exterior.

Full case study is linked below.

MORE: BROOKLINE MASKED MODERN CASE STUDY

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ZED's Concord Green Home in Forbes

We are excited to see ZED’s Concord Green Home featured in the new Forbes article on the role of the thermal envelope in limiting energy and water consumption. Describing the Concord, MA, project as “one of the best examples of thoughtful use of appropriate materials,” the writer explains how the use of small windows in the north-facing front of the house and the larger windows in the rear work together to optimize solar gain and minimize heat loss.

ZED designed the Concord home to be a healthy and energy-efficient home right from the start. Since indoor air quality was one of the highest priorities for the client, care was taken to specify building materials that would not emit irritating gases. ZED also used design and energy modeling to prioritize efficiency improvements (such as extra insulation, high-performance windows, and an efficient heating and cooling system) and help the owner evaluate numerous window layouts, window models/manufacturers, and glazing options to select a package that offered the most attractive total cost of ownership, daylit space, and a future upgrade path for renewable energy.

As a result, each room in the house has windows on at least two walls - ensuring two different light sources and optimal cross ventilation. The overall design is Energy Star Certified to consume 50% less energy than a typical brand new home.

Read more about Concord Green Home case study.

MORE: CONCORD GREEN HOME IN FORBES

ZED's Dartmouth Oceanfront in Green Building & Design Magazine

The architecture and construction focused “Green Building & Design” magazine (gb&d), just published a feature story on ZED’s Dartmouth Oceanfront project. The in-depth article highlights the home’s innovative modern design that embraces the challenging coastal site while also incorporating privacy, comfort, accessibility, and sustainability.

In an interview with gb&d, ZED’s Managing Director, Stephanie Horowitz, talked about many design decisions, such as the inclusion of an art wall to showcase the homeowners’ extensive art collection, the addition of an elevator to accommodate aging in place, or the use of exterior shades to both accent the design and manage heat gain.

Full article is linked below.

MORE: DARTMOUTH OCEANFRONT IN GB&D

Newton Net Zero Wins SILVER PRISM Award

We are proud to announce that ZeroEnergy Design’s high-performance, net-zero home in Newton, Massachusetts, won a Silver PRISM award for Best Passive Home/Sustainable Home Design at the 2019 PRISM Awards Gala.

Organized by the Builders and Remodelers Association of Greater Boston (BRAGB), the PRISM awards honor the finest projects and accomplishments of architects, builders, developers, and other professionals in the home building industry. Entries in this category were judged on operation at zero net energy performance as well as overall design, comfort, usability, and livability of the space.

The Newton Net Zero home was designed as a forever home for a couple who believed deeply in carbon-free lifestyle and wanted to set an example of conscientious, healthy living for future generations. With a super-tight building enclosure, high-efficiency mechanical systems, and a solar photovoltaic system for generating renewable energy, the home uses 96% less energy than a comparable home built to code with enough energy for charging the couple’s electric cars.

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The BRAGB is the region’s leading home building association and has represented the industry since 1944. The PRISM Awards Gala is the BRAGB’s flagship event of the year and winning an award is considered a sign of excellence and superior achievement. Each entry submitted in the PRISM awards competition is judged on its own merit by a national panel of distinguished industry professionals.

Matthew Genanze (Project Management/Architecture) of ZeroEnergy Design and Ryan McCathy of Auburndale Builders (Construction) received the award on behalf of the entire project team that also included ZED’s Stephanie Horowitz (Architecture) and Jordan Goldman (Energy and Mechanical Design).

MORE: PRISM AWARDS | NEWTON NET ZERO

Concord Green Home Featured in Houzz

ZED’s classically beautiful, healthy, and ecofriendly Concord Green Home was just featured in a Houzz editorial article on ‘sustainable homes created by design professionals for themselves’.

The residence was created for interior designer Lisa Tharp who wanted a home that not only blended in seamlessly with the traditional New England architecture in the Concord, Massachusetts, neighborhood, but also offered the highest indoor air quality and a low carbon footprint. Multi-functional living spaces such as the first-floor home office that could also serve as an ADA-compliant master suite or the alcove off the second-floor master bedroom that could work equally well as a secondary office space or a walk-in closet ensured that the home met the needs of the family and would also appeal to future homeowners.

The home won the EcoHome Design Award in 2011 and has been previously featured in Fine HomeBuilding and Design New England magazines.

For the the full article, click on the link below.

MORE: HOUZZ

Lincoln Net Positive Farmhouse Featured in Inhabitat

Top green architecture and home design website, Inhabitat, recently published a story on ZED’s Lincoln net positive farmhouse in Lincoln, Massachusetts. Designed and built in collaboration with Thoughtforms Corporation, this 2,800 sq. ft. modern farmhouse was inspired by the traditional farmhouses found in that area and proves that families can lead healthy, low-carbon lifestyles without compromising on style, space or comfort.

While flexible and spacious open-concept living areas provide plenty of space for the family to live, work, play and entertain, a high-performance design ensures low energy consumption and superior thermal comfort throughout the year. In addition to the 13.1 kW array of solar roof panels that produce more energy than required, the home also features plenty of other green amenities such as high-efficiency appliances, root cellar, and planning for rainwater catchment.

The Lincoln Net Positive project has won several awards, including a BSA Award for Sustainable Design and Gold PRISM awards for Best Net Zero Passive House and Best Energy Efficient Project.

MORE: INHABITAT NET POSITIVE FARMHOUSE ARTICLE

New Case: Modern Oceanfront 'Forever Home'

ZeroEnergy Design is pleased to release a case study in exceptional green modern architecture and mechanical design: the Dartmouth Oceanfront Residence in South Dartmouth, Massachusetts.

Nestling within a coastal New England setting, this modern home takes advantage of the site’s natural topography and stunning ocean views - providing the homeowners with the perfect home to entertain in style, showcase their love for art, and enjoy comfortable low-carbon living.

A super-tight building envelope, carefully-designed HVAC systems, and concealed exterior shades lower energy consumption and ensure year round thermal comfort, while a photovoltaic system on the roof generates almost enough energy to offset the home’s energy consumption. Covered outdoor spaces, charging ports for electric cars, and accessibility features add to this ‘forever home’ that will allow the owners to comfortably age in place.

The project won a PRISM Gold Award for Best Single Family Home at the 2018 Annual PRISM Awards Gala.

MORE: DARTMOUTH CASE STUDY

ZeroEnergy Design’s Farmhouse Wins a BSA Sustainable Design Award

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ZeroEnergy Design’s Lincoln Net Positive Farmhouse project was the recipient of a Sustainable Design Award from the Boston Society of Architects (BSA) presented at the 8th annual BSA Design Awards Gala on January 17, 2019. The BSA Design Awards Gala is the design community’s highest celebration of great design and is attended by architects, designers, developers, builders, and industry professionals.

The BSA jury stated that the “Lincoln Net Positive Farmhouse is an excellent example of what a new single family dwelling could – and should – look like, addressing food production and resiliency while delivering great metrics.

Designed to produce 67% more energy annually than it uses, the Lincoln Farmhouse in Lincoln, Massachusetts, demonstrates ZeroEnergy Design’s continued commitment to healthy and energy-efficient design practices. The 2,900 sq ft green home was built as a collaboration between ZED and custom homebuilder, Thoughtforms, and is designed to suit the client’s lifestyle with open concept living and family areas, an optional first floor guest suite, a separate craft area, and a root cellar for storing food.

The home consumes far less energy than a code-built house and has a 13.1 kW array of solar panels that produces more energy than needed to offset consumption annually, making it ‘net positive’. A super-insulated building envelope, high performance windows, an air source heat pump, an energy recovery ventilator, high-efficiency water fixtures, and ENERGY STAR appliances are some of the home’s other notable features.

The project is USGBC LEED Platinum certified and has received Zero Energy Certification and a REVEAL label from the International Living Future Institute. It previously won the 2017 Fine Homebuilding HOUSES Award for Best Energy-Smart Home and was also featured in HOUZZ magazine.

MORE: BSA AWARD

Chatham Magazine features energy efficient home by ZeroEnergy Design

ZeroEnergy Design’s award winning ’Chatham Mashview House’ is featured in the fall/winter edition of Chatham Magazine. The article includes an interview with both Stephanie Horowitz of ZED and the homeowners, Jeff Berg and Debra Paget.

Berg and Paget knew they wanted an energy efficient home and they knew of ZED from their time at Cornell University. The energy efficient features include a continuous air barrier, super-insulated building enclosure, air source heat pump, energy recovery ventilator, and triple glazed, tilt-turn windows. Constructed by Eastward Homes, the home is a single-story design that will allow the homeowners to age in place. The Cape Cod home was also honored with the Prism Award for Best Energy Efficient Project last year.

You can read more about the house and how the couple realized which features were perfect for aging in place by picking up a copy of the magazine, which is available at local bookstores and other retailers, or reading the article online.

MORE:  CHATHAM MAGAZINE

Fine Homebuilding - Environment for Retirement

Fine Homebuilding magazine’s latest issue includes the HOUSES by DESIGN section with a ZED project article called Environment for Retirement. As long term fans of the publication and winners of the 2017 Fine Homebuilding HOUSES award, ZED is thrilled to receive this continuing coverage.

MORE: FINE HOMEBUILDING

Boston Home Magazine Story

Boston Home magazine wrote a story about ZED's historic rowhouse in Boston's SouthEnd. 
(A renovated green home in Boston that is both modern + historic simultaneously.)

Boston needs more deep energy retrofits of brownstones and row homes like this!

Great job by John Mucciarone and Stephanie Horowitz of ZeroEnergy Design for beautiful architecture.

MORE:  ARTICLE  |  PROJECT CASE  |  BEFORE/AFTER

 

Homeowners Attend Newton Net Zero Tour

The Newton Net Zero tour was a strong success!  50+ attendees joined ZeroEnergy Design (the architect) and Auburndale Builders (the contractor) for a presentation and tour of the property while under construction. Both firms are grateful for the promotional cooperation of Green Newton and Historic Newton, helping to share the opportunity and enable homeowners to view a new house with exceptional energy performance, healthy indoor air quality, and resilient design.

Stephanie Horowitz AIA, Managing Director of ZeroEnergy Design, discusses the design process essential to achieving a net zero energy home.

Stephanie Horowitz AIA, Managing Director of ZeroEnergy Design, discusses the design process essential to achieving a net zero energy home.

Matthew Genaze, Project Manager & Designer at ZeroEnergy Design, discusses how to achieve an airtight enclosure.

Matthew Genaze, Project Manager & Designer at ZeroEnergy Design, discusses how to achieve an airtight enclosure.

Nick Falkoff, General Manager of Auburndale Builders, explains how his staff implemented the exterior rigid insulation, and when soon combined with cavity insulation, will achieve super-insulation for the home.

Nick Falkoff, General Manager of Auburndale Builders, explains how his staff implemented the exterior rigid insulation, and when soon combined with cavity insulation, will achieve super-insulation for the home.

Ryan McCarthy, Project Manager at Auburndale Builders, describes the wall assembly using a mock-up.

Ryan McCarthy, Project Manager at Auburndale Builders, describes the wall assembly using a mock-up.

A thermal image shows the warm attendees on the cold and stormy day.

A thermal image shows the warm attendees on the cold and stormy day.

PRISM Awards: 'Best Net Zero/Passive House’ and ‘Best Energy Efficient Project’

The 2016 PRISM Awards honored ZeroEnergy Design and Thoughtforms with two awards: ‘Best Net Zero/Passive House’ and ‘Best Energy Efficient Project’ for the Lincoln Farmhouse. Hosted by the Builders and Remodelers Association of Greater Boston, the PRISM Awards seek excellence in building, design, and industry related categories.

The Lincoln Farmhouse, a collaboration between Thoughtforms & ZeroEnergy Design, demonstrates that families who desire a green home do not need to compromise on style, space or comfort. With more than a year of measured occupancy to date, the home unquestionably provides exceptional energy performance, healthy indoor air quality, water efficiency, thermal comfort, and long term resilience, all within a welcoming, New England aesthetic.

MORE: PRESS RELEASE