Frequently asked questions about our expert opinions

Approx. 4 to 6 weeks from commissioning and receipt of complete documents. As a rule, however, faster.

Here you will find an overview of the documents that we usually require from you. You can upload the documents directly when placing your order or alternatively provide them afterwards by e-mail or other means.

• Floor plans (e.g. from building file, partition plan, exposé or rental plans)
• Site plan (if available)
• Energy certificate (exceptions possible for commercial and listed buildings)
• Photos
  • Exterior view from the front (e.g. photo of the entire building from the street)
  • Exterior view from the back (e.g. photo of the entire building from the garden or backyard, if possible)
  • Staircase (if available)
  • Windows (material and condition should be visible, e.g., wood vs. vinyl vs. aluminum)
  • Bathrooms (condition of plumbing and tiling should be visible)
  • Interior finishes (e.g. photos of rooms showing walls, doors, floors, ceilings, radiators, etc.)
  • Roof inside (if attic is undeveloped and accessible)
  • Roof outside (e.g. from the side through skylights or from the street with sufficient distance so that the type of roof covering can be recognized)
  • Heating system (e.g. photo of central heating, gas floor heating, district heating transfer station or similar)
  • Damages / defects (if any)

All necessary documents as well as the free initial assessment can be found in our order form.