About OCCA Offsite

It is all agreed that persistent problems of construction industry such as time and budget overruns, waste of resources and lack of close collaboration between design teams and construction companies can only be addressed by:

  • More involvement of manufacturing practices into construction,
  • Convergence of design both with 3D technologies and digitization technologies,
  • Adoption of holistic approach to construction, especially by integrating collaborative design platforms, in turn eliminating ‘silo thinking’ amongst designers, engineers, construction companies and project owners as well
  • In the coming years it is evident that off-site construction will challenge traditional construction practices. Designers and decision makers will question whether their projects can be ‘manufactured’ as oppose to be ‘constructed.

OCCA Offsite, as a young and dynamic offsite construction company, aspires to adapt itself to the above game changing trends.
As a spin-off from Galpan Steel Structures (www.galpan.com), Turkey’s one of the largest structural steel company with more than 30 years of experience in design, manufacturing and installation company having successfully completed many complex projects, OCCA Offsite benefits at large from manufacturing and design experience of Galpan.

East Broadway Residences, Manhattan, New York City
East Broadway Residences, Modules Under Production
East Broadway Residences, Living Room & Kitchen

Our Approach

OCCA believes that there cannot be ‘one-fits-for-all’ approach once a construction project is considered for suitability to offsite construction. The level of employment of off-site practices differ largely from one project to other and moreover trying to employ highest levels of offsite thinking may result with counter productivity.

OCCA embraces a range of offsite design and manufacturing techniques that may suit well with the particularities of each project that will be undertaken. In its simplest terms, OCCA tries to answer the below questions before suggesting any route to its clients:

  • Does the project suit well for offsite design thinking?
  • If so, how much offsite design and manufacturing can be employed?
  • Whether the suggested ways will result with shorter project delivery, reduced cost, reduced waste and improved health and safety at the construction site?

Most off-site companies are not versatile in their propositions and in many cases they are adept at one offsite manufacturing proposition namely volumetric off-site  or hybrid off-site. However, OCCA Offsite has the capacity to design and manufacturing for delivering projects with either of the two techniques. This enables OCCA to become a very flexible solution provider.


The success of off-site engineering and production largely depends on close collaboration among project partners including structural engineers, architects, Mechanical/Electrical/Plumbing(MEP)  designers, production department and Project owner.

OCCA has an in-house structural, architectural and MEP team that embrace off-site design thinking. All major design decisions that can help to facilitate smooth project delivery are jointly taken by these design departments. This collaborative design philosophy is supported by the use of 3D software such as Autodesk REVIT. Design staff at OCCA are all capable of designing with such state of the art software.

The high level of cooperation between design and manufacturing also critical for delivery of successful offsite construction projects. At OCCA preliminary decisions on the critical offsite aspects are jointly taken with the production teams. Manufacturability and installability must be ensured just from the inception of the project in order to prevent costly changes during production. Also, all members of design team are encouraged to assist and observe production to understand how the design comes into reality and what aspects of design can be improved on the forthcoming projects.

Manufacturing teams at OCCA are all trained to use Autodesk’s BIM 360 Document Management Software, a software that acts as a common information platform between design and manufacturing departments. All production supervisors are trained to look and follow architectural and structural design in 3 D format on BIM 360 software and they can post questions on the same platform through mark-ups in order not to deviate from the design during steel production and fit outs.

Our design and manufacturing teams are highly aware of the importance of local codes and regulations on the design and detailing for international projects. On the materials part, our design team has in depth knowledge on the utilization of code compliant materials. However, in order to prevent use of non-compliant materials in the production, our Teams submits technical data and testing reports to our Clients during the design phase.