328 Koser

Iowa City, Iowa
Builder
  • McComas Lacina Construction; Smith and Wood Construction
Photographer
  • Cameron Campbell
Location
  • Iowa City, Iowa
  • Structure
  • House (Single Residence)
  • Type
  • Midcentury
  • Year
  • 2016
  • Square Feet
  • 2500
  • Lot Size
  • 1/3 Acre
  • Bedrooms
  • 4
  • Full Baths
  • 4
  • Partial Baths
  • 1
  • A family of four invests in a walkable neighborhood by unlocking a neglected bungalow’s carbon-neutral potential.

    Rather than retreat to the suburbs, this family looked to a central neighborhood near a university campus. They saw promise in a 1,300 sf 1960’s home referred to locally as “the shack”—the kind of small, under-maintained house prone to a downward spiral of high-turnover rent that can fracture a flourishing community.

    The shack’s intensive renovation updates the house’s layout, materiality, envelope, and supporting systems. It enables full use of the 500 sf existing basement and expands the main level to 2,500 sf with a slab-on-grade addition. Both original building and addition utilize post and beam construction, with steel columns and wood framing. A tongue-and-groove bleached cedar ventilated rain screen serves as exterior cladding. Foamed-in-place insulation and insulated sheathing achieve a high-performance envelope, yielding an R-40 roof and R-24 walls. Reconfigured windows imbue mid-century character and maximize daylight, while a minimalist approach throughout eliminates non-essential elements. New, highly efficient climate control systems include a closed loop, horizontally-bored geothermal system with fresh air energy recovery, LED lighting, and EnergyStar appliances. An 8.4kW photovoltaic array powers the mechanical system as well as the house’s all LED lighting and EnergyStar appliances.

    The family measures their success in the surplus of energy and credit received from the utility company, the quality of life they enjoy, and the positive influence the house has had on the neighborhood. A nearby property has already begun renewal with the same goals: quality, sustainability, and design excellence.

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    Modern home with House, Wood Siding Material, Metal Siding Material, Outdoor, Rooftop, and Wood Patio, Porch, Deck. Restrained use of materials and crisp detailing reinforce a modernist feeling exterior. Photo  of 328 Koser

    Restrained use of materials and crisp detailing reinforce a modernist feeling exterior.

    Modern home with Front Yard, Hardscapes, Walkways, Small Patio, Porch, Deck, Wood Patio, Porch, Deck, Exterior, House, Metal Siding Material, and Wood Siding Material. The previously concealed entry is reoriented toward the street and redefined by meandering pavers and a receding opaque glass entrance. Photo 2 of 328 Koser

    The previously concealed entry is reoriented toward the street and redefined by meandering pavers and a receding opaque glass entrance.

    Modern home with Outdoor. Lower and upper floor plan drawing of the completed house. Photo 3 of 328 Koser

    Lower and upper floor plan drawing of the completed house.

    Exploded axonometric drawing illustrating the new and renovated parts of the house. Photo 4 of 328 Koser modern home

    Exploded axonometric drawing illustrating the new and renovated parts of the house.

    Modern home with Exterior, Wood Siding Material, Metal Siding Material, and House. The refreshed exterior utilizes tongue-and-groove bleached cedar siding with black aluminum accents. Photo 5 of 328 Koser

    The refreshed exterior utilizes tongue-and-groove bleached cedar siding with black aluminum accents.

    Modern home with Kitchen, White Cabinet, Porcelain Tile Floor, Ceiling Lighting, Recessed Lighting, Pendant Lighting, Refrigerator, Wall Oven, Cooktops, Microwave, Dishwasher, and Undermount Sink. The kitchen is positioned in the center of the house and serves as the primary space of domestic convergence. Photo 6 of 328 Koser

    The kitchen is positioned in the center of the house and serves as the primary space of domestic convergence.

    Modern home with Living Room, Sofa, Ceiling Lighting, Accent Lighting, and Porcelain Tile Floor. Black aluminum-covered beams and a clean white ceiling work together to pull the exterior into the living spaces. Photo 7 of 328 Koser

    Black aluminum-covered beams and a clean white ceiling work together to pull the exterior into the living spaces.

    Modern home with Bedroom, Bed, Lamps, Shelves, Storage, Ceiling Lighting, Recessed Lighting, and Porcelain Tile Floor. Reconfigured windows maximize daylight in the bedrooms. Photo 8 of 328 Koser

    Reconfigured windows maximize daylight in the bedrooms.

    Modern home with Office, Study, Chair, Lamps, Porcelain Tile Floor, and Desk. A small office separates the master bedroom from the kitchen. Photo 9 of 328 Koser

    A small office separates the master bedroom from the kitchen.

    Modern home with Exterior, House, Metal Siding Material, and Wood Siding Material. A large deck provides exterior living space off the kitchen. Photo 10 of 328 Koser

    A large deck provides exterior living space off the kitchen.