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Napa County Mosquito Abatement District

American Canyon, California

Since Napa County Mosquito Abatement District was formed in 1925, it effectively minimizes the effects of the Napa and Sonoma valleys’ most numerous resident, the mosquito. When the District was forced to relocate from their old Quonset-hut office, Hayashida Architects was hired to design a new office that is modest and spacious, affordable and comfortable, rustic and charming.

Within a tight footprint of 40 x 40 ft, this compact laboratory and office building contains a welcoming reception area, a meeting room completed with library and kitchenette, a technician room that fits five cubicles, a laboratory with island and L-shape counters equipped with chemical fume hood, multi-occupancy restrooms and an office. With careful planning, the natural warmth of wood materials and plenty of natural light makes the most of every precious square inches. The custom designed millwork houses the extensive library of etymological books and the General Manager’s generous collection of gemstone formations.

Poor soil condition proves to be another challenge. Instead of removing the native soil and bringing new engineered soil, a more cost effective solution was found by treating the existing soil with lime, making it more suitable for the building foundation, carports, and a parking lot.

With the effective use of materials and structure, such as a combination of structural insulated panels (SIPs) and scissor trusses for the roof, the entire interior is under a more comfy vaulted ceiling and well-lit with clerestory windows. The high ceiling can also accommodate pendant and direct/indirect light fixtures. A front and rear porches extend the living spaces of the office building, while shielding the occupants from rain and sun, a necessity in the Napa Valley climate.

photo: Ken Rice