Sekisui House could have written the book on Zen and the art of house building. One of Japan's leading homebuilders, Sekisui House designs, prefabricates, and builds steel, wooden, and concrete houses and condominiums. It is also involved in selling land, detached houses, and condominiums. Its real estate operations include leasing and managing houses, low-rise apartments, and commercial and retail buildings. Other operations include contract remodeling and landscaping. The company is also focusing on green building and sustainability in its new line of homes, and adds such features as fuel cells to its houses. Sekisui Chemical owns 15% of the company, which dates back to 1929.

company specializes in heavy construction, infrastructure, transportation systems, and housing and recreation facilities in the western continental US and Hawaii. Goodfellow Bros. also offers earth moving and paving services. Its Blasting Technologies subsidiary blasts, drills, and demolishes rock and other structures. The company was founded in 1921 by brothers Jack, Bert, and Jim Sr. Their early business included the first excavation work on the Grand Coulee Dam in 1933. Now the company has a number of planned communities, public facilities, and other projects under its belt.

American Pan & Engineering Co. has its hand firmly planted in concrete. The privately-held specialty contractor, which does business as APEC, offers concrete formwork for commercial buildings in the southeastern US. The firm is involved in such construction projects as condominiums, hotels, and hospitals (the latter brings in about half of its annual revenue), as well as parking decks, office buildings, and schools. It has done work on Florida Memorial Hospital; Rosen Hotels and Resorts' Shingle Creek resort and convention center in Orlando; and science and engineering buildings at Georgia Institute of Technology. Founded in 1995 by president BJ Jarun, APEC has offices in Florida, Georgia, and Texas.

Joseph R. Loring & Associates provides mechanical and electrical engineering services. Its specialties also include heating, ventilation, and air conditioning (HVAC), plumbing, fire protection, and telecommunications installations for commercial and institutional building projects. The company has worked on office buildings, apartments, prisons, airports, schools, research facilities, and museums. Also doing business as Loring Engineers, it operates from offices in New York, New Jersey, and Washington, DC, but has worked on projects as far away as Australia and China. Joseph R. Loring & Associates was established in 1956.

Reyes Construction provides full construction contracting services for building bridges, retaining walls, and pipelines; storm drains, sewers, and water systems; and channels and flood control structures. The union contractor owns and maintains heavy equipment that includes dozers, excavators, loaders, backhoes, cranes, and a range of trucks (articulated, water, and boom trucks). Its clients include the City of Los Angeles, the County of Los Angeles Department of Public Works, Caltrans (the California Department of Transportation), and the US Army Corps of Engineers. CEO Joe Reyes founded the company in 1987.

Enka focuses on building airports, bridges, industrial plants, hospitals, petrochemical plants, power plants, shopping malls, and other large structures and complexes. Enka also rents and manages office and retail buildings. The company operated hypermart shopping centers in Russia, but handed over operations of the markets by renting the spaces to Auchan in 2007. The transaction signals Enka's move away from retail management. Other operations include machinery distribution and management of natural-gas power plants. Tracing its roots back to 1957, Enka was formally established in 1967.

Leighton Holdings provides engineering and construction services for mining, infrastructure, commercial, and environmental projects in Australia, the Asia-Pacific region, and the Middle East. Typical contracts include the maintenance and construction of pipelines, mines, highways, tunnels, and commercial buildings. The group's largest subsidiaries are mining, construction, and services firm Thiess and project management firm Leighton Contractors. The 45%-owned Al Habtoor Leighton division, formed in 2007, is one of the largest construction contractors in the booming Gulf region. Leighton also develops real estate and offers facilities management services. German construction firm HOCHTIEF owns 55% of the group.

Smith-Midland Corporation and its subsidiaries develop, manufacture, license, sell, and install precast concrete products for the general contractors in the construction, farming, and utilities industries, as well as federal, state, and local transportation authorities in the Mid-Atlantic, northeastern, and Midwestern regions of the United States. Its products include Easi-Set Slenderwall lightweight construction panels, which are prefabricated lightweight exterior cladding systems used for constructing the exterior walls of buildings; Easi-Set Sierra Wall that provides sound and sight barrier used around residential, industrial, and commercial properties and alongside highways; and Easi-Set J-J Hooks Highway Safety Barrier, a safety barrier for use on roadways to separate lanes of traffic. Smith-Midland Corporationalso offers Easi-Span expandable precast building; Easi-Set Precast building, a transportable, prefabricated, single-story, and concrete building for use in housing communication operations, traffic control systems, mechanical and electrical stations, inventory or supply storage, and restroom facilities or kiosks; and Easi-Set Utility Vault used for house equipment, such as cable, telephone or traffic signal equipment, and for underground storage. In addition, Smith-Midland Corporation provides Softsound soundwall panels, which are used to absorb highway noise; Beach Prisms, a shoreline erosion control product; and H2Out, a secondary drainage and street level leak detection product for panelized exterior cladding. Further, licenses its proprietary products to precast concrete manufacturers in the United States, Canada, Belgium, New Zealand, Australia, Mexico, Spain, and Chile. Smith-Midland Corporation was formerly known as Smith Cattleguard Company and changed its name to Smith-Midland Corporation in 1985. Smith-Midland Corporation was founded in 1960 and is based in Midland, Virginia.

Servidyne turns a dime by helping its clients keep their energy costs down. The company provides commercial and industrial energy engineering and management products and services to lower energy consumption and increase environmentally sustainable practices. Offerings include energy design, energy audit, and retrofitting of mechanical and electrical systems. Servidyne's Fifth Fuel Management demand response product tracks and optimizes energy usage to prevent brownouts and blackouts that occur during peak periods. The company also owns a handful of third-party-managed commercial property and land holdings. Members of the founding Abrams family, including CEO Alan Abrams, control Servidyne.

General builder Lee Lewis Construction has waltzed across Texas and beyond to keep in step with the top US contractors. The company provides construction-related services and construction management for commercial, institutional, and industrial projects. Among its projects is the Garland ISD Special Events Center in Garland, Texas; it also worked on the Grand Floridian Resort at Walt Disney World. The company earns much of its revenue from projects for Texas school systems. Projects for hometown neighbor Texas Tech University have generated a significant portion of the company's business. CEO Lee Lewis founded the company in 1976.

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