Port Arthur Refinery Complex Office/Warehouse 3835 Gulfway Dr 326 - 71,192 SF of Space Available in Port Arthur, TX 77642

This mezzanine-level observation office provides an unobstructed view of the entire first-floor middle warehouse, offering an elevated vantage point ideal for operational oversight. The second-level space features two private, full glass-walled offices with 16-foot ceilings, making it well suited for supervision, security monitoring, or warehouse management. A dedicated ground-floor storage room is included, allowing users to maintain visibility over operations while working from a private, functional command-style office.

This 1,855-square-foot fully independent fabrication shop features three double-size drive-in doors, allowing simultaneous access for large trucks and equipment with no shared entry or interference from other tenants. Designed for welding, fabrication, repair, or light manufacturing, the space includes high ceiling clearance, industrial-grade concrete floors, heavy power (3-phase where applicable), a private restroom, a separate side personnel door, and dedicated front and adjacent truck parking. The self-contained layout supports efficient, 24/7 operations and can be combined with adjacent flex space for an expanded footprint.

The 26,551-square-foot Left Flex space is the largest contiguous unit in the facility, offering exceptional flexibility for a single large tenant or multiple users with creative subdivision options and shared amenities. The space includes a double-truck unloading dock, two full-open double drive-in doors, and large industrial fans serving the common area. A unique hidden asset is an original glass storefront, currently protected behind exterior metal panels—that can be restored to create a professional, high-visibility presence along Gulfway Drive or retained for a more secure, utilitarian appearance, giving tenants control over branding and functionality without the cost of new construction.

The 2,230-square-foot lobby space occupies prime frontage along Gulfway Drive and is well suited for a standalone office, reception area, showroom, or client hospitality center. The space features a functional glass entry door and three walls of glass currently covered with wood paneling, which can be restored to create a bright, professional, client-facing environment with strong street visibility. Additional features include five private storage rooms, a private restroom, a side personnel door, and a large glass sliding door that provides optional access to the rest of the building. The space can operate fully independently or be integrated with adjacent warehouse or industrial areas, offering flexibility for a wide range of users.

The 10,750-square-foot Middle Flex space occupies the central core of the facility, offering a highly strategic layout with direct connectivity to nearly every other space while maintaining its own independent drive-in access. The space features a private roll-up door for truck and equipment access and three large rear rooms ideal for receiving, shipping, staging, or storage. Its central position provides direct access to the 2,230-square-foot Gulfway Drive lobby space, the 326-square-foot mezzanine observation office, the 1,855-square-foot fabrication shop, the 1,970-square-foot right flex space, and the 26,551-square-foot left flex space, making it ideal for tenants seeking a hub-and-spoke operation or future expansion flexibility within the building.

The 4,352-square-foot office/industrial space is configured as a true headquarters environment, featuring a two-story layout designed for companies requiring significant administrative capacity, client-facing space, and direct operational oversight. The first floor includes a large conference room seating approximately 50 to 80 people, four private offices, and open areas suitable for administrative staff or reception, while the second-floor mezzanine offers four additional private offices, a central lounge area, and three glass-walled offices with unobstructed views over the entire first-floor warehouse. With direct warehouse access, a separate professional office entrance, full fire sprinkler coverage, and the ability to integrate with adjacent industrial spaces, this move-in-ready suite is ideal for engineering firms, major contractors, manufacturers, or EPC companies seeking a centralized command-style headquarters.

The 1,970-square-foot Right Flex unit is strategically positioned to connect key areas of the facility while maintaining independent functionality. The space offers direct access to the 2,230-square-foot lobby at the front, the 1,855-square-foot fabrication shop at the rear, and the second-floor warehouse above, allowing tenants to move seamlessly between office, fabrication, and storage areas without leaving the building. Features include a private drive-in roll-up door for truck and equipment access and a private restroom, enabling the unit to operate as a fully self-contained space or as an integrated hub within the larger facility. The building is fully fire sprinklered, available for immediate occupancy, and conveniently located near major industrial users.

The 23,158-square-foot second-floor space offers an expansive office or flexible-use environment with two distinct access points and the ability to subdivide into separate front and rear zones. The space is served by three large industrial fans and is suitable for large engineering teams, administrative headquarters, training, or light industrial and flex use at the second-floor level. Access is provided via the 1,970-square-foot Right Flex unit on the ground floor or through the 4,352-square-foot two-story executive headquarters, allowing seamless integration with ground-floor operations. The layout can be leased as one contiguous suite or divided into a 12,524-square-foot front zone and a 7,393-square-foot rear zone, offering flexibility for single-tenant occupancy or multi-tenant configurations based on operational needs.