CL20: Suburban House Addition Prototype – Shubin + Donaldson

Josiah Hamilton

11 years ago

This year, for the Santa Barbara Design Awards, a jury from the AIA evaluated 74 entries for a design contest held every three years. In each entry, these aficionados judge on design resolution, ‘contextualism’ and innovation. They appreciate buildings that utilize new techniques and building materials, preserve natural resources, enhance the environment, add to the community and just lift the spirit overall.(SBSeasons.com)

The team of Shubin & Donaldson won the 2012 Honor Award for this incredible home! Here is a detailed description of the award winner as seen on Shubin & Donaldson’s website

Resource Efficiency:

The flat roof provides an excellent platform for a photovoltaic array to service the CL20 and existing residence. The interior walls and ceiling are reclaimed clear Douglas fir.

All lighting is LED, and heating/cooling is provided by a high efficiency Mitsubishi split system.

This is a question that most American homeowners face at some point, especially owners of post-war built tract and “ranch style” homes. Our answer is the following:
1. Pre-fab or modularize the construction as much as possible
2. Minimize impact on existing home and yard as much as possible
3. Maximize floor plan and wall adaptability
4. Maximize energy and resource efficiency
5. Use reclaimed construction materials where possibleThe 14 ft. x 34 ft.CL20 minimally connects to the existing house with a glass box connecting space. It deploys “off the shelf” structural steel moment frames that bolt to a standard concrete slab on grade. These 4 frames support the flat roof thus providing all the vertical and lateral support necessary for the entire structure. This allows floor plan flexibility and eliminates exterior shear walls. The CL20 exterior walls are custom installed dual pane insulated glass and proprietary sliding doors. This transparent glass box minimizes visual impact on the yard while providing maximum interior day lighting.

Resource Efficiency:

The flat roof provides an excellent platform for a photovoltaic array to service the CL20 and existing residence. The interior walls and ceiling are reclaimed clear Douglas fir.

All lighting is LED, and heating/cooling is provided by a high efficiency Mitsubishi split system.

SHUBIN + DONALDSON ARCHITECTS