April 2nd, 2009
A Green Modular HOM Away from Home
Stumble it!
For a few days last week, a rustic green cabin popped up in the middle of a metropolis. Behind the iconic Pacific Design Center and in front of the Museum of Contemporary Art in West Hollywood, designers and architects walked in and out of the HOM 1 manufactured home, taking a close look at the cork floors, FSC-certified walnut wood beds, and recycled glass-and-aluminum lamps.
HOM 1, the $235,000, 1000-square-foot, 2-bedroom, 2-bathroom modular home designed by KAA Design Group, was on display as part of WESTWEEK 2009: The Business of Design, a big annual symposium for the design world. Although the model drew a crowd in the city, the HOM 1’s intended as an escape home: “HOM is about living outdoors and in, with a close connection to nature,” declares the HOM website.
The modular home combines modern design with a rustic outdoorsy feel. Buy a HOM 1, and it’ll arrive 90% assembled as a single unit, fully equipped with the latest kitchen appliances, plumbing fixtures, and energy-efficient washer and dryer. According to HOM, the streamlined process of making this modular home means less wasted energy, construction waste, and transportation emissions.
Since HOM also makes eco-friendly furniture and accessories — all of which are designed to last a long, long time — you could get your HOM 1 fully furnished too. Then you can relax on your Wima Ottoman — made of FSC-certified ipe wood, turn on your Akira pendant lamp — made with 100% organic linen, FSC-certified walnut and recycled aluminum, creating the perfect relaxing setting for reading Thoreau’s Walden.
To see many other fine examples of green prefab homes, click here.
Popularity: 19% [?]
March 30th, 2009
Wedge House - Prefab Modular Plus Custom Design
The Wedge House in Durham, North Carolina is part modular home, part custom design. The home’s wedge shape was created by using 3 modular prefabricated homes. A single modular is on one side, while the other two are stacked opposite with a slanted roof connecting the two. As prefab homes have greater control on tightness and building quality, they are often considered to be more efficient homes built with less waste. Custom homes though, tend to fit the lifestyle of the inhabitants better. This wedge house is a great example of a blending of the two design styles - prefabricated modules worked into a custom design.
Studio B, a Durham-based architecture firm is responsible for the wedge design and BuildSense took care of the construction of this 1,829 sq ft home. A nearby factory built the three modulars, in a controlled environment with the aid of computers and specialized machines that helped maintain building integrity. Factory fabrication has many advantages over on-site building, like minimizing waste, higher tolerances, less gaps in the building envelope, properly installed insulation and less exposure to moisture and the elements. By the time the modulars were delivered on-site, they were ready to be dropped into place.
Before the modulars even arrived, careful site work was done to determine the optimum orientation for the house to maximize solar passive design. A concrete crawl-space was poured and then the modulars were placed on top and then sealed tightly. A shed roof was laid over the modulars to create an open, airy living space.
The kitchen, dining and laundry occupy the single modular, while the bedrooms are placed in the stacked modulars - the master bedroom and bath are downstairs, and two bedrooms with a shared bath are upstairs. The living room is airy, open and still cozy at the same time. Because the house is modestly sized, what would seem like a giant space, is actually quite comfortable. An outdoor/indoor screened-in patio sits right off the living room for a nice place to sit and relax.
High efficiency windows and doors were installed along with 2 x 6 wall framing for larger insulation cavities in order to improve energy efficiency. The homes floor plan was designed for energy efficiency, comfort, usefulness and natural ventilation. Rain screens were installed along with the exterior siding to prevent moisture damage and improve the efficiency of the envelope. Exterior cladding and materials were chosen not only for their looks but also because they were low maintenance. Polygal Fenestration, Galvalume corrugated metal siding, and Cyprus wood were used as cladding materials. With the busy lives we lead now, spending time and money maintaining homes these days takes away from quality time with our families.
Inside the home, modern finishes and rapidly renewable materials give the home a clean yet natural look. Interior rooms were well designed to maximize the space, which included built in cabinets, study nooks, and a screened-in porch. The large windows in the living and kitchen area provide ample daylight to minimize the use of lighting during the day. And to top it off, the house was built on a modest and very affordable budget.
via Jetson Green
Popularity: 10% [?]
February 14th, 2009
GreenPods: Small, Lovely Eco-Homes
If you are interested in green architecture then please spend a moment welcoming GreenPods on to the market. These are wonderful, small, highly eco-smart dwellings.
GreenPod Developmentis based in Washington and they seek to design and construct affordable, sustainable, modular homes. At right you see one of their “SoloPods”, but the also have other designs that are equally compelling. Below you see the model called the “Floating Pod.”
The Pod designs range from 300 to 800 square feet. But if you need additional square footage, the Pods can be joined or stacked. Pod designer Ann Raab uses movable walls, multi-use furnishings, lighting, and windows to visually enlarge the Pod’s living spaces.
The Pods boast many environmentally-savvy features. All Pods utilize passive-solar design principles to cut energy use. Every Pod features low air infiltration design,energy-efficient windows, energy saving appliances, low-flow plumbing and LED lighting. They also make extensive use of daylighting.
The uber-green can go beyond these elements and opt for such additions as greywater recycling, rain water storage, roof gardens or green roofs.
Currently GreenPods is working on projects in Washington and California, and they can also service Oregon. Founder Ann Raab told me that they hope to be able to serve more parts of the country next year. I also asked her about costs and she said that depending on the size and features one selects for the their Pod, the cost would range between $150-$250 per square foot.
In case you are in Washington, you can stop by the GreenPod showroom. It’s at Artisans on Taylor, which is located at 236 Taylor Street, Port Townsend, WA, 98368 (across from the Rose Theater).
Popularity: 26% [?]
February 25th, 2008
Green Prefab: pieceHomes
Recently I had the good fortune to interview Jonathan and Mary Jo Davis, co-founders of Davis Studio Architecture + Design and the new line of modular houses, pieceHomes. They have been working in the sustainable architecture field for many years, and have recently launched pieceHomes as a new venture.
Q. How did you get into green architectural design?
Jonathan: The first house I designed –right after college– was in Shreveport, LA. It was a custom home and a really a green home. It was located on a lakefront, so it was designed to be raised up for flooding, sited to take advantage of the views of the lake, and we carefully surveyed the trees and sited the house to save as many as we could. We incorporated solar hot water panels, geo-thermal wells for heating and cooling, heat-recovery units behind the fireplaces, into the design, as well as a self-contained sewage treatment plant that put out pure water right at the lakefront. We also used recycled brick throughout the house.
I was also into camping, being outdoors, and sailing….it all tied together and made sense. After grad school I went to work for Frank Gehry….we did a building for a utility company over in Germany that was a showcase for green technologies… I was very much involved in that building. After leaving Gehry, I completed many projects with recycled materials and sustainable systems. These elements have always been part of my palette. And six years ago when Mary Jo and I met and started Davis Studio A+D, we made this our mission. We design for sustainability and we educate our clients about sustainability.
Mary Jo: Two years ago we built our own house and we wanted to use our house as a showcase to show clients that you could build it green and build it affordably. And now it is a prototype for our pieceHomes concept.
Q: Great—please tell us a bit more about the genesis of pieceHomes and where it is heading.
Jonathan: Through interactions with a client of ours several years back we were working through some ideas related to modular homes. We were interested, but we weren’t ready to try to break into the market. Prefab is a huge industry—especially on the East Coast—so to break into that market isn’t easy. But as we designed and built our own house we started to work with these modular concepts more. Then at West Coast Green we met Tim Schmidt who is the CEO of XtremeHomes. He was starting a new factory that builds green homes….and they are very flexible about what they will build. They will basically build a custom home in a factory—or 20 versions of a house, in modular pieces. So when we saw that they could provide the flexibility that we were looking for, we decided to move forward with pieceHomes. From their factory location, we’ll be able to serve the West Coast. Interestingly though, we’re seeing huge demand on the East Coast…particularly in North and South Carolina. It’s amazing. I never would have predicted it. That’s a market that has surprised us…and we’ll have to figure out how to serve it.
What’s interesting to us—we’re a small architecture firm and all of a sudden we come out with this line of factory-built homes and we’ve gotten exposure all over the world. We’re on peoples’ radar, which we never would have been able to do as a small architecture firm. It exciting but it also presents some challenges for us. We’re used to dealing with clients on a one-to-one basis, and now we have so many people coming to us on the modular front. It’s a different way of doing business. And we’re having to having to adjust our practices to meet the demand.
Mary Jo: I’m excited because off-site built has the potential to change the entire architecture industry. Home building has essentially not changed in centuries…but this is a real departure. Prefab could bring architecture to so many more people. We love that aspect of it.
Jonathan: And for us affordability is key. A lot of companies are selling their factory-built work at $400-500/suare foot—and they are gorgeous, but very expensive. Our goal is to produce some homes at the $200/sq foot level….we’d prefer to sell more smaller, affordable homes to more clients than a big, expensive home to a really wealthy client. We’re also looking at selling the whole package…we’re not selling a kit, we’re delivering the whole house, lock stock and barrel. In the future that would include furniture, linens… we want to create the full package—the client can say check, check, check, and get the whole thing delivered.
Q. Tell us about the projects you are working on now.
Jonathan: We are working on several homes now….the first one is a custom design. It’s called Rindge. It started off as a conventionally built house. But we realized we could build it in modules with some minor changes to the structural engineering. We realized we could save money and time going that way. It’s going to be in Playa Del Rey and we’re signing contracts now with the builders, so we hope to be done by the end of the summer.
Q. Are you hitting any roadblocks—challenges?
Jonathan: It’s a bit more work to do the permitting for off-site built—you have to get two permits—one for what’s built in the factory—and one for what’s done on the site. Two sets of drawing. But it’s not insurmountable. In California at least it’s a fairly clear process.
The second project we’re working on, we’re in early design phase. The client has an old one story house in Venice, LA. Right now they want a new garage and a studio space….but they eventually want a new house. So we’re going to take it in stages. First we’re going to do the garage with a studio module on top of it. That’s the first phase. Then we’re going to do a 2-story addition to the existing house—2 modules—which we would lift over the existing house. The third phase will involve deconstructing the existing house and then with another set of modules we would build a new house, which would connect to the 2-story addition. It would be a seamless integration. The new house will be much better related to the site in the end. Using modules allows us to do it in stages, and it allows the family to continue to live there while this construction is going on. We’re planning to do Phase 1 this summer.
Mary Jo: We’re also talking to people in SF, Seattle, Denver, Texas….and for some reason a lot of people were asking about building homes in Hawaii. But shipping these homes to Hawaii would be a trick!
Q. Tell us about the materials for the homes you’re working on.
Mary Jo: As much as possible, the exterior materials will be installed in the factory. This reduces cost and on-site work. We’ll be using materials such as cementitious panels, galvanized corrugated steel siding, Mangeris wood (from sustainably managed forests). We’re also looking into other materials such as Ecoclad.
As for the interior items, for all of the living spaces we’d offer cork or bamboo floors as the basic. We offer Expanko as well, which is a rubber-cork composite. Or Forbo. We use EcoTop for the counters. No VOC paints and finishes. We use vegetable-based oils on exposed woods. We’ll use formalhyde-free MDF cabinets. Of course Energy Star appliances and a tankless water heater. LED lighting as an upgrade. Whole-house water filters. Dual flush toilets, low flow water fixtures. In our house we used wheatboard…but now the price has gone way up. There are many upgrades available—Kirei board or Palmwood for example.
Q. Will you seek LEED certification for pieceHomes?
Jonathan: We’re talking about it….certainly if the client wants it, we will do it. And all of our homes will be Build-It-Green certified. We can offer the possibility of homes getting LEED certification but not do it as a standard process. If the client wants it, we can go for it. Build it Green is more flexible. It’s a California based rating system and it’s an easier process. We’re planning to do that for all of the homes. A highly rated Build It Green house it’s quite comparable to a LEED house.
Q. Well thank you so much for your time and insights. We’ll be very interested to see PieceHomes popping up across the landscape over the next few years!
Mary Jo: Thanks—we’re excited. Green and modern are merging. It’s a great time.
Popularity: 7% [?]
September 24th, 2007
Green Prefab Homes - Prefabulous!
Prefabricated, or modular, home construction is enjoying a renaissance in the booming green building market. Some people may think that prefab or modular building connotes cold uniformity, but in this newsletter we’ll introduce you to companies that are making this new breed of green prefab homes beautiful, comfortable, and most importantly very light on the planet! (when you’re done reading, visit this new article with more information about the latest prefab trends and products)
What is Prefab?
The basic principle of prefab construction is that sections of a home, or modules, are built in a controlled factory environment, transported to a project site upon completion, and then connected and placed onto a foundation. Depending on the complexity of the home, designers can employ anywhere from two to 50 structurally connected pieces.
Most often prefab is associated with highly modern design. Modern design is typically characterized by clean lines, strong forms, use of materials in their natural state, and little to no added decoration. Modular building allows modern design to be brought to mainstream markets because it generally reduces construction and design costs significantly when compared to a similar custom-built home. Recently, a much broader range of prefab home options has emerged, especially some of those designed using “green” building principles.
Why is Prefab Green?
The primary goal of building a green home is to reduce its environmental impact while also creating a healthy environment for occupants. Architects and builders do this by emphasizing energy efficiency, reducing fresh water use, selecting materials that are healthy and sustainable, and choosing sites that minimize environmental disturbance.
Prefab design & construction offers a number of unique opportunities to accomplish these goals. First, the control available in a factory environment allows the designer / builder to be very precise with material planning and use – there is very little waste left over when compared to standard construction techniques. Second, hard-to-find green materials can be bought in bulk and used over many projects, minimizing delays and ensuring that no “short cuts” are taken due to unavailable materials. Third, this bulk purchasing and the delivery of a small number of completed modules to the home site dramatically reduce pollution from transportation to and from the site. And finally, the disturbance of the home construction site can be minimized because there is no need to stage and store large amounts of material onsite for extended periods. A good prefab contractor might clear only the house footprint itself and enough room to deliver the completed modules.
In addition to being green, these elements also help to keep costs down and shorten the overall project timeline. Materials can be bought in bulk at attractive prices. Skilled craftsmen can be fully employed and can work on modules for many prefab homes at a time. And, the indoor construction process eliminates delays and damage due to weather conditions.
So, What Do Green Prefab Homes Look Like?
Green prefab homes come in all shapes and sizes. Smaller is better for the Wee House by Alchemy Architects. Alchemy offers a wide selection of green materials, technologies and styles in their prefab house line. They come in small “solitaire” units or in multi-module larger “companions” if you need more space. While Wee Homes arrive on site nearly ready to live in, the homeowner needs to get a contractor to complete the foundation, utility hookups and cabinetry. You’ll save time, money and dramatically lower your environmental impact with a dwelling like the Wee House.
Another beautiful example of the modern-style prefab home is Michelle Kaufmann Design’s (MKD) Sunset Breezehouse (pictured at the top of this article). Designed through a partnership between MKD and Sunset Magazine, the Breezehouse has a “BreezeSpace” at the center which is situated under a distinctive butterfly-shaped roof. This breezeway or porch allows you to “let the green in” to your main living and dining areas, blurring the boundary between interior and exterior and increasing your functional living space without building more walls and ceilings. The home is Energy Star certified and highly efficient, relying on open cell foam insulation and thorough caulking to eliminate air leakage. The Breezehouse also features water-saving plumbing fixtures, on-demand water heaters, and a mechanical ventilation system that is 30% more efficient than typical forced-air systems. It’s efficient and gorgeous.
Another innovative prefab design is the Solaleya Home. Solaleya homes actually rotate to track the sun in order to use passive solar energy for heating. This rotation is highly energy efficient, provides a constant change of scenery, and brings warming natural light into the living space. The structure is made of a central pillar and arches, giving the home excellent hurricane and earthquake resistance. It is also Energy Star rated and is truly the house of choice for anyone who follows the sun all year round.
One last example for those looking for a slightly less modern approach is the house pictured here from Bamboo Technologies in Hawaii. These green prefab homes are made almost entirely out of bamboo, one of the most sustainable of building materials. You can customize versions for any climate zone, so fear not if you don’t happen to live in the tropics! And, these homes are incredibly strong and stand up to both earthquakes and hurricanes. Although these homes are built far away, they are transported by ship, which is one of the less carbon-intensive methods of moving materials. The other environmental benefits of a bamboo structure certainly counter this one drawback.
How Can I Get A Prefab Home?
The easiest way to get a green prefab home is to call a design firm that specializes in prefab such as one of the ones mentioned above. Here are some of the other options in green prefab design:
- pieceHomes (Los Angeles, CA)
- Blu Homes (Boston, MA)
- Eco Structures (Maidsville, WV)
- Eco-Infill (Denver, CO)
- kitHAUS (CA)
- Hive Modular (Minneapolis, MN)
- Modular Homes, Inc. (Edison, NJ)
- h-haus (Santa Fe, NM)
To find more companies that create and build prefab homes, please visit our green prefab housing directory.
What If I’m Already Building a Home?
Some of us might want to have it both ways – the individuality of a custom home or the benefit of working with a trusted architect / builder, combined with the cost and environmental benefits of prefab approaches. If this is you, don’t fret – you can now find green prefab elements to employ in more customized designs. Some of these include:
- Structural Insulated Panels (SIPs). SIPs are preconstructed wall and roof elements that combine insulation, structural elements and often channels for wiring & plumbing in one piece. They are much easier to assemble than typical walls, are very strong, and are incredibly energy efficient. Premier Building Systems is one of the leaders in this area, with over twenty years of experience.
- Precast, predesigned foundations. Check out the Oasis Foundation Wall System. Foundation, insulation, and interior walls combined into one piece, and installed in one day. And, you achieve indoor air quality and material efficiency savings too.
- Precast or prefabricated countertops. Several companies produce integrated counter and sink elements out of sustainable materials. Lithistone produces beautiful sink and countertop units out of materials that contain recycled content and require low energy use to make when compared to traditional cement-based products.
- Pre-packaged solar PV systems. A large portion of the cost of solar PV installations is labor. You can cut that significantly with a pre-packaged solar system from ReadySolar. Their “Solar in a Box” system comes with all of the needed components, ready to install.
And, last but not least, try to check out Modern Cabana’s line of green prefab accessory structures – perfect for that home office, guest suite or relaxation space in the back yard!
Related features:
To explore some new products and services in the green prefab market, check out this new post.
Looking for something smaller? A prefab office, or a retreat cabin? Check out this post on small prefab (weefab) options.
Read an interview with the co-founders of pieceHomes, Jonathan and Mary Jo Davis.
If you are interested in building a custom green home, find a green builder near you.
Popularity: 68% [?]
