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Case Studies

This library contains research reports produced by the Building America program and other building science resources used to support this Solution Center. The materials cover both new construction and existing homes. Use the search box and/or the filters to explore hundreds of residential building resources. Access to some references not produced by Building America may require purchase from the publisher. Documents are listed alphabetically. While we continually update our database, links may have changed since posting. Please contact our webmaster if you find broken links.

Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Evolutionary Homes Builders in Geneva, Illinois.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Glastonbury Housesmith in South Glastonbury, Connecticut.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Greenhill Contracting in New Paltz, New York.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015

Case study on a 2015 Housing Innovation Award-winner built by Habitat for Humanity South Sarasota County in Nokomis, Florida.

Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Hammer and Hand in Portland, Oregon.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Heirloom Design Build in Atlanta, Georgia.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by High Performance Homes in Gettysburg, Pennsylvania.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by KB Home in El Dorado Hills, California.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Mandalay Homes in Glendale, Arizona.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Mantell-Hecathorn Builders in Durango, Colorado.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Mutual Housing California in Woodland, California.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015

Case study on a 2015 Housing Innovation Award-winner built by New Town Builders in Wheat Ridge, Colorado.

Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Palo Duro Homes in Santa Fe, New Mexico.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Sunroc Builders in Lakeland, Florida.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by TC Legend Homes in Bellingham, Washington.
Author(s): Gilbride
Organization(s): PNNL
Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by United Way of Long Island Housing Development Corporation in Patchogue, New York.
Author(s): PNNL
Organization(s): PNNL
Publication Date: January, 2013

Case study about the first certified DOE Zero Energy Ready Home—the “Wilson Residence” in Winter Park, Florida.

Publication Date: October, 2015
Case study on a 2015 Housing Innovation Award-winner built by Amaris Homes in Maplewood, Minnesota.
Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in west Connecticut that scored HERS 39 without solar PV. The 3,000 ft2 two-story home has R-33 double-walls, R-72 flat roof with closed-cell foam and blown cellulose, an ERV, and LED lighting.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Exeter, Rhode Island, that scored HERS 43 without PV. This 2,000 ft2 custom home has a spray- foamed attic and walls, plus rigid foam sheathing, ducted mini-split heat pumps, and an HRV.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study about a Zero Energy Ready Home construction project in the marine climate.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Seattle, WA, that scored HERS 34 without PV. This 2,000 ft2 system home has R-45 double-stud walls, an unvented flat roof with 2 inches of spray foam plus 18 inches blown cellulose, R-42 XPS under slab, triple-pane windows, and a ductless mini-split heat pump.

Author(s): PNNL
Organization(s): PNNL
Publication Date: January, 2013

Case study of a DOE Challenge Home in Winter Park FL that scored HERS 57 without PV or HERS -7 with PV. This 4,305 ft2 custom home has autoclaved aerated concrete walls, a sealed attic with R-20 spray foam, and ductless mini-split heat pumps.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready in Long Island, NY, that scored HERS 43 without PV. This 5,088 ft2 custom home has R-25 double-stud walls, a vaulted roof with R-40 blown cellulose, R-10 XPS under slab, a hydro air system with 91% efficient boiler for forced air and radiant floor heat, and 100% LED lights.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Herriman, UT, that scored HERS 40 without PV, -1 with PV. This 4,111 ft2 production home has R-23 advanced framed walls, and a vented attic with R-60 blown fiberglass.

Author(s): PNNL
Organization(s): PNNL
Publication Date: April, 2014

Case study describing the first DOE Zero Energy Ready Home in Georgia that achieved a HERS score of 40 without PV and -10 with PV.

Author(s): PNNL
Organization(s): PNNL
Publication Date: October, 2013

Case study of a DOE Zero Energy Ready Home in Ithaca, NY, that scored HERS 50 without PV. These 1,160 ft2 affordable town houses have R-20 advance framed walls, R-52 blown cellulose in attic, radiant heat with 92.5 AFUE boiler, and triple-pane windows.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study about a DOE 2014 Housing Innovation Award winner.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2014

This certified DOE Zero Energy Ready Home, is the first home in the world to use a tri-generation system to supply electricity, heating, and cooling on site.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Ellenton FL that scored HERS 53 without PV, HERS 23 with PV. This 1,143 ft2 affordable home has R-23 ICF walls, a spray-foamed sealed attic, solar hot water, and a ducted mini-split heat pump.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Phoenix AZ that scored HERS 58 without PV or HERS 38 with PV. This 1,700 ft2 affordable home has R-21 framed walls, a sealed closed-cell spray foamed attic, an air-source heat pump with forced air, and a solar combo system that provides PV, hot water, and space heating.

Author(s): PNNL
Organization(s): PNNL
Publication Date: October, 2014

Case study about zero energy ready home construction project in the hot-dry climate.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study about a DOE 2014 Housing Innovation Award winner.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study about a DOE Zero Energy Ready Home in Frederick MD that scored HERS 43 without PV, HERS 28 with PV. This 4,516 ft2 custom home comes standard with a geothermal heat pump, SIP walls, spray-foamed unvented roof, and ERV.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2014

The home is the builder’s fi rst home certifi ed to the Passive House Institute standard and their fi rst certifi ed to the high energy performance standards of the U.S. Department of Energy’s Zero Energy Ready Home program.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study about a DOE 2014 Housing Innovation Award winner.

Author(s): PNNL
Organization(s): PNNL
Publication Date: April, 2013

Case study of a DOE Zero Energy Ready Home in Old Greenwich CT, that scored HERS 42 without PV or HERS 20 with PV. This 2,700 ft2 custom home has advanced framed walls with R-24 blown cellulose plus R-7.5 EPS rigid foam, membrane-coated OSB, a close-cell spray foamed attic, R-13 closed-cell spray foam under the slab and on basement walls, an...

Author(s): PNNL
Organization(s): PNNL
Publication Date: February, 2014

Case Study describing a DOE Zero Energy Ready Home construction project in Florida that recieved a HERS score of 49.

Author(s): PNNL
Organization(s): PNNL
Publication Date: October, 2014

Case study about a DOE Zero Energy Ready Home in the hot-humid climate.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Libertyville IL that scored HERS 45 without PV. This 2,763 ft2 custom home has advanced framed walls with R-20 of open-cell spray foam, R-49 open-cell spray-foam sealed attic, an HRV, and a tankless water heater for hydro coil furnace with high-velocity, small-diameter ducts.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study about a Zero Energy Ready Home construction project in the marine climate.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2017

Thrive Home Builders built this 2,780-ft2 townhome in Lone Tree, Colorado, to the high-performance requirements of the U.S. Department of Energy’s Zero Energy Ready Home (ZERH) Program. 

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2017

Thrive Home Builders built this 4,119-ft2 home at the Lowry development in Denver, Colorado, to the high-performance criteria of the U.S. Department of Energy’s Zero Energy Ready Home Program.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study about a DOE Zero Energy Ready Home in Devens MA that scored HERS 35 without PV or HERS -37 with PV. This 2,508 ft2 custom home has R-46 double-stud walls with open–cell spray foam, a vented attic with R-67 blown cellulose, plus R-10 rigid XPS under the slab, R-20 closed-cell spray foam on basement walls, triple-pane windows, and...

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Devens MA that scored HERS 34 without PV or HERS -21 with PV. This 3,168 ft2 custom home has R-46 double-stud walls, a vented attic with R-67 blown cellulose, plus R-10 rigid XPS under the slab, R-20 closed-cell spray foam on basement walls, triple-pane windows, and mini-split ductless heat pumps....

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2017

United Way of Long Island’s Housing Development Corporation built this 3,719-ft2 two–story, 5-bedroom home in Huntington Station, New York, to the rigorous performance requirements of the U.S. Department of Energy's Zero Energy Ready Homes Program.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Downers Grove IL that scored HERS 35 without PV. This 3,600 ft2 custom home has advanced framed walls with R-23 dense-packed fiberglass plus R-13 rigid polyiso, a sealed attic with open-cell spray foam, a pier foundation, and 95% efficient gas furnace.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study describing a 4,763 ft2 certified Passive House that achieved HERS 27 without PV through the construction of R-54 walls that use ICF plus fiberglass cavity insulation, an R-100 vented attic, extensive air sealing and flashing, triple-pane windows, ductless heat pumps, and solar hot water.

Author(s): Chan, Walker, Sherman
Organization(s): LBNL
Publication Date: August, 2015
Report on how airtighness changes as houses age.
Author(s): BSC
Organization(s): BSC
Publication Date: February, 2009
Case study describing a building project in the hot-humid climate zone.

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