Ranked by market capitalization, these ten contractors span power-grid work, HVAC, homebuilding, and infrastructure across the American economy.
America runs on the work these companies do — power lines, ductwork, highways, and houses. The Contractors industry sits inside the broader Building & Construction sector, and its biggest players now range from grid-hardening specialists to some of the country's most recognizable homebuilders. Below, the ten largest American contractors ranked by market capitalization in the 2026 data refresh.
A Houston-Rooted Leader
At the top sits Quanta Services, Inc., trading as NYSE: PWR, with a market cap of $104.3B. Headquartered in Houston, Texas, the company posted revenue of $28.5B in FY2025, putting it well ahead of every other name on this list.
A Second Houston Giant
Just behind is Comfort Systems USA Inc (NYSE: FIX), also based in Houston, with a market cap of $64.9B and FY2025 revenue of $9.1B. Two of the industry's largest companies calling the same Texas city home says something about where contracting capital has concentrated.
An International Name on a US Exchange
Ferrovial N.V. ranks third with a market cap of $47.9B, trading under NASDAQ: FER. It's the only company in the top ten without a US headquarters listed among the provided facts, a reminder that America's contractor market draws global players.
Texas Homebuilding at Scale
Horton D R Inc /DE/ (NYSE: DHI) comes in fourth, headquartered in Arlington, Texas. Its market cap stands at $41.3B, backed by FY2025 revenue of $34.3B — the highest revenue figure of any company on this list.
Connecticut's Mechanical Powerhouse
EMCOR Group, Inc. (NYSE: EME) holds the fifth spot, based in Norwalk, Connecticut. Its market cap of $36.3B is paired with FY2025 revenue of $17.0B, making it the largest contractor on this ranking headquartered outside Texas or Florida.
Florida's Infrastructure Contractor
Rounding out the middle of the pack, Mastec Inc (NYSE: MTZ) is headquartered in Coral Gables, Florida. It carries a market cap of $28.8B and FY2025 revenue of $14.3B.
Smaller Footprint, Real Scale
Sterling Infrastructure, Inc. (NASDAQ: STRL), based in The Woodlands, Texas, ranks seventh with a market cap of $27.1B. Its FY2025 revenue of $2.5B is the smallest on this list, yet its market cap still places it among the ten largest contractors in the country — a gap worth noting rather than explaining away.
Atlanta's Homebuilding Entrant
Pultegroup Inc/mi/ (NYSE: PHM) takes eighth place. Headquartered in Atlanta, Georgia, it reports a market cap of $22.6B and FY2025 revenue of $17.3B.
Miami's Building Giant
Lennar Corp /NEW/ (NYSE: LEN), based in Miami, Florida, sits ninth with a market cap of $22.3B. Its FY2025 revenue of $34.2B nearly matches Horton's, underscoring how large-scale homebuilding drives much of this industry's top-line size even when it doesn't top the market-cap chart.
Virginia Closes Out the List
Finishing at tenth is NVR Inc (NYSE: NVR), headquartered in Reston, Virginia. Its market cap of $16.7B comes alongside FY2025 revenue of $10.3B.
What the Ranking Shows
Taken together, this top ten reveals an industry split cleanly between infrastructure and mechanical-systems specialists clustered in Texas and Florida, and homebuilders whose enormous revenues don't always translate into the highest market valuations.
