One year ago, Kiplinger's Personal Finance featured an article on Fabulous Prefabs.

The article details homeowners Scott and Lisa McGlasson's decision to purchase an Alchemy Architects' weeHouse as a summer home for a lot they own in Minnesota:

LiveModern is a website for "anyone interested in modern and sustainable design for housing products and services." EcoSteel, aka EcoContempo, contributes content to the site. Especially worth a look is the construction blog by architect Greg La Vardera:

"Our blog is for tracking the development of new Modern House designs which are available at our catalog house plan site lamidesign.com/plans. We also cover the prefab house products we work on such as EcoContempo, EcoSteel, custom modular, and IBU container based housing."

The blog covers the variety of projects, detailing developments in the ongoing planning and construction of each. A recent post focused on a project in New Mexico, including photos of the site and renderings of the structures:

"The project consists of a trio of buildings - a residence, a garage/shop, and an observatory structure. Yes! That's right. More detail about that later. The three structures are located in proximity to each other at one corner of the site."

At the Vermont Plat House, interior finishes are going in:

"The owner moves in to the house in a matter of days. No doubt there will be more loose ends, but we will see it almost done very soon."

Other projects, like the Virginia Plat House, or the Colorado Plat House just have photos of the site.

Greg also covers other projects his firm, LaMi Design, is working on. He recently wrote about a competition entry for a multi-unit building composed of a number of single bedroom container homes:

"The proposal was for a student housing village composed of a series of these [stacked] IBU structures. As the competition was being held in concert with a conference on green building, the student housing was proposed as a test bed for new sustainable energy and building systems. It was proposed that the units serve the Engineering school allowing for the students to live in and work at innovating and optimizing the new systems being designed at the school."

Glossary: IBU (Inter-modal Building Units) - Greg La Vardera's name for container housing

Treehugger reported on a BBC story about the micro compact home we've mentioned a couple times before. The BBC report includes a video, and some insight into the home's design:

"It's a very tranquil place but at the same time it's a bit of an adventure - there's always something to slide out or under, pull down, tuck away, generally fiddle with, if only out of the need for space. To live here you have to be ordered: to do one thing, you have to finish another first and put it away. And that may be my and other compact-livers' downfall."

The Maison Tropicale sale made a couple more headlines. An AP story about the sale showed up on quite a few sites, like ABC Money UK:

"Its last owner, Eric Touchaleaume, a French antiques dealer, has said he plans to use the sale proceeds to finance a Prouve museum that will travel inside another Maison Tropicale."

"Prouve's aluminum and steel home was designed for French colonists living in Brazzaville, now the capital of the Republic of the Congo."

Future House Now likes A Prefab Project as much as I do, especially the site's detailed budget page:

"It's been recently updated, and gives a lot of detail, the kind of detail you don't get from glossy magazine articles."

Apartment Therapy eyes V2world's V2flat:

"They say it has no geographic limitations. So, we say set it up for semi-outdoor summer living anywhere."

I've really been enjoying the posts on A Prefab Project. Homeowners Chris and Sarah track the construction of their prefab home, designed by Resolution: 4 Architecture.

One of the downsides of the modular building method is that modules are limited to a size that fits on a flatbed truck. Chris offers some perspective after a visit to the factory:

"When we were first looking around at the different prefab options, we had no real perspective on what 14' wide or 16' wide would be like for the whole length of a house - those are both obviously fine dimensions for a single room, but how does it feel to have a whole house fit into that width?...yesterday it was reassuring to actually stand in ours and feel how open and comfortable the space is..."

Resolution 4's 16' module width is fairly typical, e.g.
Hive Modular: 16'
Alchemy Architects: 14'
OMD: 12' - 14'
Marmol Radziner: 12'

Chris answered some user comments and questions by listing some of the finish and fixtures they chose. Their goal: "modest and genuinely cost effective (and of course largely unspectacular)".

Another post compares photos of the actual modules in the factory and the renderings that Resolution 4 had provided to the homeowners in the design process.

Last Monday, Chris relayed a funny story about his Grandpa's take on modernist design.

A blog named DO Research showed up in a few places around the blogosphere. The blog is an "online note-to-self occasionally posted up on the internets for the unbuilt prefab home of Nicole Dotin and Eric Olson." They've been writing for a while; their coverage of the Aperture House, mentioned here last week, got attention. Treehugger enjoyed the photos:

"We love showing pictures of modern prefab, hoping that someday it will make good green design accessible and affordable. Nichole Dotin and Eric Olson plan to build a prefab and are clipping their own pictures of favourites. Where others might stick them in a file folder, they store them online as they move around the world from Minneapolis to Reading, UK."

I happened upon a blog that "tracks the building of our house, the first NextHouse by Empyrean." The house is almost complete, and this week, the authors discussed the last-minute craziness of the project:

"As move-in date draws nearer, all the things that need to be handled seem to be converging and conspiring to eat up all of our free time on weekends, and a bunch of time on weekdays as well."

Prefab Update discusses the efficiency of the 7.83 Hz House:

"It only requires two truck loads of materials to assemble, is built with sustainable materials, and is extremely energy efficient. The home is reconfigurable and low cost."

The Sander Architects Hybrid House showed up on Treehugger. Lloyd Alter wondered about the prefab-ness of the home:

Treehugger also showed off a new green home built with shipping containers:

"The R4House prototype consists of two bioclimatic homes (one of 150 m2 and a mini-flat of 30m2) made from materials that close the loop. The energy consumption of both is zero due to its bioclimatic design, the solar panels and the geothermal energy source. The waste production during construction is also zero. Both homes are modular and built from six recycled shipping containers; low-cost and allowing flexibility."

The University of Kansas School of Architecture and Urban Design runs a website/blog tracking their projects. They've been posting weekly on the construction of a new prefab in Kansas City. This week (week 19 of the project), they're nearing completion:

"Our goal was to be finished this week and have all of next week to tidy up and prepare for the open house on the 19th. With the exception of minute detail work, we have reached our goal. All of the siding is finished, the south deck is completed, and the ramp is being clad with Cumaru today. We can now finish our site work by bringing in sod in once high-trafficked areas to the south and between the house and garage."

It was exciting to get over to CA Boom yesterday, meet the vendors and see the Prefab Zone in person. Some initial impressions:

What was the deal with the H-Haus booth? For all of Sunday, they had some heated window product set up, joined by a representative from the window company, but no h-haus folks (and the window rep was explaining that there was no h-haus literature and she knew nothing about the product!). By about 2 pm (the show didn't end till 5), the entire booth was packed up (see the above picture!) and it was basically deserted.

I always have a little trouble remembering which is which between LivingHomes and CleverHomes and they were passing out info in identical folders, which didn't help. CleverHomes' booth never seemed to die down. Folks were pouring in to talk to the reps and learn about the their product (which seems to have the most models currently completed or under construction for any of the vendors at CA Boom.)

Free candy is always a positive, and V2world was offering up building block-shaped candy. Good stuff. However, their product line sounds like it's in flux, according to ceo Tim Russell. At this point, the v2shell line, and the v2flat sound like they been pushed aside for a larger/more custom line of products. Oh, and their steel framing system, which I earlier reported as having the ability to be disassembled and moved...apparently one would need to cut all welded joints to be able to do so.

More soon...

names: H-Haus, CleverHomes, and V2world

Many of the prefab models coming onto the market, like the CleverHomes, are built with a technology called SIPs. The acronym SIP stands for Structural Insulated Panel; the lowercase "s" is usually added to pluralize.

A SIP contains a 4" - 6" foam layer sandwiched between two layers of rigid material, usually oriented strand board (like plywood, but each layer is made of many small wood chips), plywood, or fiber cement board. This sandwich is the total thickness of your wall, roof or floor, minus the finishes.

The benefits of SIP include the ability to ship a wall panel to your house site that is cut to size and ready to install. Insulation and framing are handled in one step. Compared to standard stud-framing, the SIP is more likely to be the right dimensions, be flatter (compared to the waviness of the studs) and to have a built-in insulation system. The crew on site just fits the panels together.

The general critique of SIP construction in the home-building world is the initial cost, due to most of the labor being offsite in the factory. Considering we are discussing prefab, however, most of the labor for any product will be in the factory. Environmentally conscious folks might take issue with the use of such large quantities of foam in the panels. However, SIPs save construction waste on site, and ensure that your home will have one of the best energy efficiencies possible for the given wall thickness.

If you decide to build a home with SIPs, prefab or not, you need to make sure your contractor has prior experience with this method, as SIP construction is different from traditional construction. And, if the designer doesn't provide oversight, the contractor must make sure that drawings are accurate prior to approving for manufacture. Additionally, installation of electrical, plumbing and mechanical systems will require special techniques.