The proposed renovation and expansion of the HTBA plant in Murcia, designed by architect Martín Lejarraga, represents a milestone in the history of an organization with over 40 years of experience. Two buildings flanking the main entrance, along the road connecting Beniel and La Zeneta, create a unified facade that reinforces the company's corporate identity.

Conceived as a kind of assembly line that precisely manages the flow of people and materials, the building combines efficient construction solutions with an organization that enhances functionality, transforming the HTBA complex into a welcoming and comfortable workspace that not only meets the company's operational needs but also promotes the well-being of its employees. The project was selected for the 2025 Architecture Awards of the Higher Council of Architects of Spain (CSCAE).

As a premise, the industrial complex developed by Martín Lejarraga is structured around the idea of ​​functional efficiency: the program layout strives to optimize circulation routes to improve the company's operations. To the north, the new service pavilion houses the changing rooms and general support spaces, which are essential to the company's operations. To the south, the administrative heart of the complex repurposes and complements the old service building, resulting in an office complex that effectively meets contemporary usage requirements.

The white ceramic cladding on the exterior not only enhances the project's energy efficiency but also creates a homogeneous, continuous image that unifies the complex. As a complement, a red metal cornice crowns the buildings, underscoring and reinforcing HTBA's corporate identity.

HTBA office and services complex by Martín Lejarraga. Photograph by David Frutos.

HTBA office and services complex by Martín Lejarraga. Photograph by David Frutos.

Project description by Martín Lejarraga

The HTBA office and services complex represents a milestone in the evolution of the Beniel orchard industrial plant, organically reflecting the identity and values ​​of a company with over 40 years of experience in the citrus flavonoid and active forms of vitamin B12 sector.

The architectural design is structured around functional efficiency, optimizing production flows, conceived as an assembly line that precisely organizes the flow of people and materials. This organization not only improves operations but also establishes a fluid relationship between the different elements of the complex, where each space responds to a logic that facilitates both circulation and work.

Complejo de oficinas y servicios de HTBA por Martín Lejarraga. Fotografía por David Frutos.
HTBA office and services complex by Martín Lejarraga. Photograph by David Frutos.

The intervention, acting as an architectural interface, is distributed across two buildings located on either side of the access control point, creating a built facade that, beyond its practical function, also reinforces the company's corporate identity.

At the main entrance, located on the road connecting Beniel with La Zeneta, a large red canopy, HTBA's signature color, structures the circulation within the facility. This element becomes a key visual feature, serving as a landmark and orientation point for users.

Complejo de oficinas y servicios de HTBA por Martín Lejarraga. Fotografía por David Frutos.
HTBA office and services complex by Martín Lejarraga. Photograph by David Frutos.

The buildings, with their ventilated facades clad in white ceramic tiles, contribute to the overall efficiency and continuity of the complex. A red metal cornice that runs the length of the buildings underscores the corporate identity, achieving a homogeneous and distinctive image that blends seamlessly with the industrial surroundings.

To the north of the access control point, the new pavilion houses the changing rooms and general services, crucial to the complex's operation. It serves as the beginning and end of the workday for employees. Its design not only facilitates internal circulation but also provides a functional environment that prioritizes employee well-being, incorporating ergonomic solutions that enhance user comfort and comfort. This approach, so relevant to the complex's internal organization, reinforces the layout of the spaces that complement the work environment.

HTBA office and services complex by Martín Lejarraga. Photograph by David Frutos.
HTBA office and services complex by Martín Lejarraga. Photograph by David Frutos.

To the south, the office pavilion, which repurposes and expands the former service building, serves as the administrative heart of the complex. Maintaining the original structural elements, the renovation complements it with new construction systems and installations that make it fully operational, returning it to use and enabling it to meet contemporary needs.

Its entrance is marked by an orange tree, HTBA's signature tree due to its strong association with citrus flavonoids, which leads visitors into a spacious, double-height lobby. This space acts as a visual and functional connection point between the two office levels, fostering an open and collaborative atmosphere.

HTBA office and services complex by Martín Lejarraga. Photograph by David Frutos.
HTBA office and services complex by Martín Lejarraga. Photograph by David Frutos.

The workspaces have been designed to encourage interaction and teamwork, using materials efficiently and sustainably that contribute to acoustic and visual comfort, creating an environment that is not only efficient but also welcoming and comfortable.

This comprehensive approach, which combines typological innovation, efficient construction solutions and an organization that enhances functionality, makes the HTBA complex an example of service architecture that not only responds to the company's operational needs, but also promotes the well-being of its inhabitants, merging aesthetics, efficiency and comfort in the same space.

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Project team
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Architects.- Martín Lejarraga, José Botí.
Collaborators.- Fátima Saavedra, Pedro José Sánchez, Guillermo Naranjo.

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Collaborators
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Technical Architecture.- PM Architecture and Management, Antonio Pérez.

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Client
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HTBA. 

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Dates
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2025.

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Location
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Beniel-Zeneta Highway, Murcia, Spain.

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Photography
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Martín Lejarraga. Architect by Superior Technical School of Architecture of Madrid (ETSAM) 1987, with office in Cartagena, Murcia, since 1991. Associate professor in the Architecture School of Cartagena. Guest professor in Architecture Schools such as Alicante, Madrid, Barcelona, Valencia, and i42 Institute of Murcia. Interferences and Collaborations with Plastic Artists and other disciplines. Creator of the "Fachadas" project. Co-Director / Editor of La Naval.

Works selection:
- New buildings:
Loop Inn Hostel (Cartagena), Public and primary school ^Nuestra Señora del Rosario^, Library and Reading Park (Torre Pacheco), University Campus (Lorca), MUCAB (Blanca), House for a Swimmer (Espinardo), Elevator - Access - Civil War Shelters and mixed-use building (Cartagena), 8 Social Housing (La Unión), Rural Activity Center (Cartagena), General Services Building and Support Centre for Research and development - CAID (Murcia) and Military Navy Headquarters (Cartagena).
- Rehabilitation:
Tivoli building restoration and extension (Cartagena), Loop Homes Palace – Rehabilitation of palatial patio houses from 19th century for residence (Granada), Rehabilitation and adaptation of the building for Student Center ^Casa del Estudiante^ (Cartagena), Casa Dorda building restoration and extension (Cartagena), Housing-Study for a painter (Cartagena), Housing for a painter and two cats (Cartagena), MURAM – Aguirre Palace restoration and extension (Cartagena), Public Library – Rehabilitation of San Joaquin and San Pascual Convent (Cieza) and Rehabilitation of Military Navy Hospital and Antigones Barracks (Cartagena).
- Interior design:
CANANA LA Brew Pub (La Aljorra), El Cuervo Jazz Bar (Cartagena), MARINO Take Away (Cartagena), iGarpe Offices (San Javier), Principal Bar 1-2 (Cartagena).
- Creative and Exhibition Spaces:
Art Galleries My Name´s Lolita Art (Valencia, Madrid), T-20 (1-2) (Murcia), Espacio Artes Visuales (EAV-Murcia),
Stands in Orgatec and Marmomacc, Arco Stand 2007/00, Chicago 2003/02, La Naval Art Gallery (Arco’08).

Awards selection:
BOY Awards 2018/14, Murcia Regional Architecture Award 2015/11/07/05/03/1997/95/92, BIGMAT Award 2011, FAD Award 2011(Finalist 2019/11/05/04/03/01), Spanish Architecture Biennale 2011/09/05/1998, SIMA Cities Award 2008, COAM Award 2005, Saloni Award 2004, Comunidad Valenciana Architecture Award 2001- finalist, 5th Biennal European of Landscape - Selection, Metápolis 2-3 Encounters.

Act.>. 11-2012/10-2019

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Published on: April 20, 2026
Cite:
metalocus, AGUSTINA BERTA
"Well-being and operability. HTBA office and services complex by Martín Lejarraga" METALOCUS. Accessed
<http://www.metalocus.es/en/news/well-being-and-operability-htba-office-and-services-complex-martin-lejarraga> ISSN 1139-6415
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