Prefab construction, while a beneficial process with tons of green advantages, has up until now been dominated by single-family residential buildings. We’ve seen great non-residential conceptual projects by Jennifer Siegal and others, but have yet to be wowed by an actual brick-and-mortar prefab school, store, or office. But now, San Francisco-based Project Frog may be changing all that. With their full line of prefabricated, modular, and customizable classrooms, schools may finally have a high-quality green option for classroom construction.

Advertising the structures as “high performance environments engineered for learning,” Project Frog goes beyond the temporary classroom trailer to offer two basic options, the “Dragonfly” and “Turtle,” both simple, open, customizable floorplans that boasts some great sustainable features such as low or no-VOC carpet tiles, high ceilings and abundant natural light, plenum floors for improved ventilation and thermal environment, and expertly-engineered building frames that exceed California seismic codes. While each module is a single classroom, the modules can be easily combined to create larger networks of classrooms.

+ Project Frog


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  1. Matt February 12, 2008 at 1:16 pm


    Good day! We are looking to buy Prebuilt Classroom in a large quantity order ,would you contact me when you have free time!!
    We thank you in advance for your prompt reply.

    My direct Number is:416-832-7803 Canada

    With Best Regards

    Matt Mostafavi

    Member of the Board /Operational Manager

    95 Mural 6th Floor

    Richmond Hill Ontario ,Canada

    L4B 3G2, Canada

    Tel (905) 882 3098

    Fax (905) 882 3132

  2. BLOG DEL DEPARTAMENTO D... June 20, 2007 at 7:01 am

    […] los meses quiere alguna vez ponernos aulas prefabricadas en el Instituto, por favor, que ponga una de estas. Digg […]

  3. Max June 15, 2007 at 7:11 pm

    Ask them how many they have actually completed. The answer is 0.

    They come in thousands of pieces, some require additional design work just to make them work. They look great on paper. I would give these a miss until they have worked out the actual construction bugs.

  4. rick bradner March 5, 2007 at 10:50 pm

    I often read about the lack of multi-family, office, schools,etc.

    you might want to check out british firm Yorkon, specifically “the murry grove apts”.
    link –

    they’ve been doing this stuff for at least 10 years…

  5. AoK March 3, 2007 at 11:03 pm

    I’ve checked out their website. While the pictures displayed may show a large amount of exterior glass – ideal for daylighting and visual openess – Project FROG’s units utilize an interchangeable window wall system. Each 2′x4′ section of the window wall can be fit with either Low-E glass or aluminum panels filled with R-15 insulation to meet the demands of nearly any climate. The glass panels themselves are double-paned, insulating and and durable. Although I didn’t see anything on their website about tornados specifically, they do mention they are engineered to withstand hurricanes and earthquakes.

  6. anna March 2, 2007 at 9:31 pm

    kudos to project frog for validating the correlation between the built environment and the learning environment for students. and given the lower threshhold for general obligation bonds, more school districts in california have been able to modernize their campuses. suburban districts like ours would certainly look into these forward thinking structures as an alternative to more traditional stick construction assuming that the price point is competitive and if the construction process were more streamlined.

  7. Richie March 2, 2007 at 10:15 am

    A poorly conceived design. Yes…heating, cooling… and too easy to be broken into. Cost effective modulor designs are desired by lower income to poor areas. Many of these areas are flood plains, tornado alleys, and hurricane & storm surge areas. This design, while visually appealing, seems unsuited for these types of locations. In high crime areas, this design allows too much access for theives…unless pull down gates are an option ?

  8. PaulS. March 2, 2007 at 2:57 am

    I have looked at their website. I like the appearance of these structures and I think many students would prefer the visual openess of these buildings versus both standard school buildings with modest fenestration, and the often windowless temp trailer classrooms.
    I would be concerned about the cost of heating and cooling these structures. Here in northern Utah we have some very cold winter days and I suspect the heating bill would be high despite using the best insulating glass available (for the price).
    Finally, the news yesterday, March 1, out of Enterprise, Alabama, is that a school had been severely damaged by a tornado, with possible deaths. If these Frogs are built in tornado prone areas they dam well better have a basement.

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