Top 5 challenges when building in existing buildings?

What are the biggest everyday problems when building in and with existing buildings?
Architects in Switzerland face several challenges when building in existing structures that affect their day-to-day work.
Here are the top 5 challenges of our guests:

1. cost control: renovation and remodelling projects can involve unforeseen costs, especially if undiscovered defects or problems arise during construction. A study by ETH Zurich shows that the use of 3D planning can reduce the likelihood of cost overruns in renovation and remodelling projects by up to 15%.

2. dealing with historic buildings: Many existing buildings are listed, which places restrictions on renovations and extensions. Architects need to plan carefully to preserve the historic features while meeting modern standards. Laser scanning provides the best basis for this, as it enables precise and comprehensive recording of the current condition.

3. working with as-built plans: Incomplete or inaccurate plans complicate the planning and realisation of building projects. These problems can often go unnoticed during the planning stage, but become apparent at the latest during realisation. Outdated and inaccurate bases lead to planning errors that can significantly impair the progress of construction.

4. building codes and regulations: There are strict building regulations in Switzerland, which can vary from canton to canton. Architects must ensure that their plans comply with local building regulations, which may require additional adjustments. 3D planning facilitates a more efficient and precise adaptation to the different regulations.

5 Communication and coordination: Liaising with clients, conservationists, authorities and tradespeople can be complex. Clear and effective communication is crucial to avoid misunderstandings and delays. A 3D model and a 360-degree viewer help to better understand the construction project.