Through the re-programming of an old parking garage and disused central water heating facility in Kärrtorp, a southern suburb in Stockholm, Sweden. Långe Jan is a spatial design concept for a new type of indoor allotment garden, a space to socialize, eat, learn, experiment and develop conventional and hopefully unconventional types of indoor gardening. A place to connect people and spread wider knowledge about gardening and food production.  The concept is rooted in the historical context of allotment gardens, which have transformed from their 19th-century origins to meet modern needs for local food production and social interaction. Långe Jan transforms the building’s existing structure into a contemporary community hub, promoting social gatherings, sustainability and self-sufficiency.   The design process includes background research, a search for the hearth, investigations to understand the building and the area around it, the reprogramming of the house, a design proposal, documentation of the final exhibition and conclusions of the project.  The reprogrammed building features different floors dedicated to semi-public conservatories, professional farming areas, a restaurant and social spaces. Each floor combines conservation, demolition, and new additions according to its function.  I have produced this architectural proposal with a social and ecological foundation that hopefully can be used to develop the site, the city, and in the best of worlds somebody's life for the better in the future.