Below is a listing of companies that offer green dwellings in the form of modular, prefab/manufactured, compact and/or mobile structures. These days, there are many such options available that are not only green, but also beautiful, well-made, and often low-cost. Some of these structures are homes or cabins/cottages, while others can be used as an addition, a backyard studio, office, in-law unit/guest house, or some other type of “accessory dwelling unit.”
They come in a wide range of sizes, from teeny-tiny one-room spaces (e.g., 100 sq. ft.) and small units (see the Tiny/Compact Structures section below) to conventionally sized homes. They are also available in a wide variety of styles; some have traditional designs, while others have a very modern look. Some are available as plans and/or DIY kits, and others have designated builders. Many can be modified or customized.
Prefab (factory-built) homes have many benefits. They can be built more efficiently (e.g., less material waste), more quickly, with more precision and durability (i.e., higher quality), and they typically have more predictable costs (and often cost less) than site-built homes.
The levels of greenness vary among the following options, but all of them tout some green features.
This is not a comprehensive listing; there are many other companies that make similar types of green structures. I’ve provided links below to other directories that list additional options. If you know of another green modular, prefab, mobile, or small home designer or manufacturer that you would recommend, please share it in the Comments.
Note: The asterisk (*) shown after certain listings indicates that those companies seem to offer at least one low-cost/affordable option. Some of the other companies might also offer such options, but specific pricing isn’t available on all of the websites; in some cases, one must contact the company for pricing information.
Blu Homes (offices in CA, MA, and MI)
BlueSky MOD (based in Toronto, Canada)
Clever Homes (based in CA)
Deltec Homes (based in NC)
Eco-Infill (based in CO)
EcoMod Structures (based in WV) *
IdeaBox (based in OR)
Jot House *
Lindal Cedar Homes (see Mod.Fab and Lindal Architects Collaborative; Lindal has an international network of dealers) *
Living Homes (based in CA)
C6 = their low-cost option*
Marmol Radziner Prefab (based in CA)
Method Homes (based in WA)
New Old Green Modular Home (from New World Home)
OHOME (Healthy Buildings Technology Group; based in CA)
OMD (Office of Mobile Design; based in CA)
Piece Homes (Davis Studio Architecture + Design; based in CA)
Rocio Romero LV series (based in MO) *
Stillwater Dwellings (based in WA) *
Studio 101 Designs (based in CA)
2morrow Studio (based in VT) *
weeHouses (Alchemy Architects, based in MN, with factories around the country) *
Xtreme Green Homes (based in NC, SC, and VA)
ZETA Communities (modular multi-family developments; based in CA)
For a listing of MANY other types of modular/manufactured homes (some of which have green features), see this compendium.
Books on green prefab homes:
Prefabulous + Almost Off the Grid: Your Path to Building an Energy-Independent Home, by Sheri Koones
Prefabulous + Sustainable: Building and Customizing an Affordable, Energy-Efficient Home, by Sheri Koones
Prefab Green, by Michelle Kaufmann
Prefab, by Allison Arieff
Tiny / Compact Structures *
(some of which are mobile)
Many of the companies listed above offer one or two options for small dwellings, while the following companies specialize in small structures:
Ecopods (based in Ontario, Canada)
GreenPods (based in WA)
kitHAUS (based in CA)
L41 Home (based in BC, Canada)
Leaf House (based in the Yukon, Canada)
Little Green Buildings (made w/ SIPs; based in WA)
Little House on the Trailer (based in CA)
Modern-Shed (based in WA, with dealers in all states)
Tumbleweed Tiny House Co. (house plans and some pre-built homes; some are mobile)
Wee Cabins (based in MN)
weeHouses (Alchemy Architects, based in MN, with factories around the country)
YardPods (based in CA)
m-ch (Micro Compact Home; based in Germany)
For a listing of many other types of small homes (some of which have other green features), see this Tiny House Directory.
Resources on small homes:
Tiny House Blog
Small House Society
The Small House Book, by Jay Shafer
Little House on a Small Planet: Simple Homes, Cozy Retreats, and Energy Efficient Possibilities, by Shay Salomon
And here’s a listing of other books on compact design.
* Low-cost/affordable option(s) available