Lean retrofit is an approach in lean construction that is based on the efficient renovation and modernization of buildings. The aim is to optimize the use of resources, save costs and extend the service life of buildings.

The main principles of Lean Retrofit are:

• Efficient refurbishment: Lean Retrofit optimizes refurbishment and modernization processes to reduce waste and maximize the use of resources.
• Sustainability: Lean Retrofit uses sustainable materials and technologies to reduce energy consumption and minimize the environmental impact of the refurbishment.
• Continuous improvement: Lean Retrofit pursues an iterative approach in which opportunities for improvement are constantly sought and implemented.

The benefits of Lean Retrofit in construction include:

• Cost savings: Efficient refurbishment and modernization can reduce costs and improve budget compliance.
• Extended service life of buildings: The optimized refurbishment processes in Lean Retrofit contribute to extending the service life of buildings and increasing their value.