Designing the entrance to an apartment building is often a complicated task due to the many demands placed on its design and construction. Everything from accessibility, safety during evacuation and fire safety, to the ability to follow the current local and zoning plan and finally, to look aesthetically pleasing and fit into the building's design language. The challenge becomes even more complicated when an entrance is to be developed as a module in a product platform where additional requirements are set based on the product platform's limitations and structure. This study maps out the requirements and presents an approach to developing an entrance module in a product system.   The purpose of the work was to design a concept for an entrance that can be manufactured as an entrance module similar to other modules in the customer's product platform. Today, they are usually built in a conventional way, i.e., on site with conventional building materials and techniques. The proposed solution must meet all legal and regulatory requirements, be able to be transported on the Swedish road network and meet all customer requirements. The module must also fit into the existing product platform.  The method used to design the entrance was to conduct interviews and workshops with experts. Benchmarking of existing entrance was done to analyze the construction. Their drawings were also studied and thematically analyzed. Concept generation was carried out continuously, resulting in a final concept.   The work resulted in a conceptually presented solution proposal that meets all legal and regulatory requirements and further customer and product requirements. The proposed solution is not fully developed when it comes to its design, i.e., the exact structure and construction needs to be designed in accordance with other modules in the product platform, before it is ready for production. However, the proposed solution contains all the critical dimensions, instructions, and reasoning for the various design decisions so that the detailed construction can begin immediately.