Head offices
| Photo | Company | Address | Headquarters size |
|---|---|---|---|
 | APA CorporationPrincipal executive office | 2000 W Sam Houston Pkwy S, Suite 200, Houston, TX 77042 | 350,000 sq ft (32,516 m²) |
 | Group 1 AutomotiveHeadquarters | 730 Town & Country Boulevard, Suite 500, Houston, TX 77024 | — |
 | HalliburtonHeadquarters campus | 3000 N. Sam Houston Pkwy E., Houston, Texas | — |
 | Phillips 66Global headquarters | 2331 CityWest Blvd., Houston, TX 77042 | 1,100,000 sq ft (102,193 m²) |
Sizes are the companies’ own figures, as shown on each profile with the source. “—” means the company does not publish one.
Houston in headquarters history
- 2022Hewlett Packard Enterprise · A new campus in Spring
HPE spent two years building a campus in Spring, Texas, just outside Houston, and celebrated its grand opening on April 4, 2022. Its address is 1701 East Mossy Oaks Road.
- 2021PNC Financial Services · Coast to coast
PNC combined BBVA USA, headquartered in Houston, with its own franchise in October 2021, giving it a presence in 29 of the 30 largest U.S. markets. In January 2026 it added FirstBank.
- 2020Hewlett Packard Enterprise · To Houston: 11445 Compaq Center West Drive
HPE moved its headquarters to Texas. The 10-K filed in December 2020 gives 11445 Compaq Center West Drive in Houston as the global headquarters.
- 2016Phillips 66 · One campus in Houston
The 14-acre headquarters campus opened in 2016 as Phillips 66's first permanent global headquarters.
- 2014ExxonMobil · The campus north of Houston opens
A 385-acre campus in the woods at Springwoods Village opens, built for more than 10,000 employees and visitors from offices across greater Houston and the U.S.
- 2012Phillips 66 · A standalone company
Phillips 66 began trading on the New York Stock Exchange on May 1, 2012, after ConocoPhillips separated its downstream businesses. Its Houston employees worked in four separate offices.
- 2007Dropbox · Two founders, a two-hour meeting
Y Combinator told Drew Houston he needed a co-founder, with three weeks to the deadline. A friend introduced him to Arash Ferdowsi, then an MIT student; they met in the coffee house at the student center and, after about two hours together, moved to California. Dropbox was incorporated in May 2007.
- 2005AT&T · SBC becomes the new AT&T
SBC bought AT&T Corp. and took the AT&T name; BellSouth followed in 2006. The 10-K filed in February 2008 still gave 175 E. Houston, San Antonio, as the head office, with about 310,000 employees.
- 1997AT&T · 175 E. Houston, San Antonio
SBC Communications listed its principal executive offices at 175 E. Houston in San Antonio, Texas, in its annual report.
Questions
Which big companies have their headquarters in Houston?
On eciffo, 4 of the biggest companies have their head office in Houston: APA Corporation, Group 1 Automotive, Halliburton and Phillips 66.
What is the biggest company headquarters in Houston?
Of the head offices on eciffo, Phillips 66's Global headquarters is the largest at 1,100,000 sq ft (102,193 m²), as reported by the company.