Case studies · Berlin

What we actually find.

Real inspections, anonymised. Each one shows what was hidden, how we found it, and what it meant for the buyer before they signed.

Altbau, CharlottenburgThe brand-new bathroomBuyer guides
Case study 01 · Altbau, Charlottenburg

The apartment looked great. The building didn’t.

The apartment itself was in good condition, but we do not just check your four walls. Walking the staircase to the top floor, we found mould and a saturated damp wall. That is a building-wide issue, not a cosmetic one.

  • Top floor: mould and a saturated damp wall
  • Basement: unresolved sanitary issue, insurance claim rejected

Without reading the assembly minutes, the buyer would have had no idea the insurer had already refused the claim. Potential collective repairs: €20,000+, outside the maintenance reserve, which means a Sonderumlage for every owner.

Stairwell + minutesfound by
€20,000+shared repairs
Before signingoutcome
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Peeling paint and damp on a shared wall in a Berlin Altbau stairwell
Case study 02 · The brand-new bathroom

The renovation was flawless. The wall was still wet.

A burst riser, an insurance repair, a gleaming new bathroom. But next door, paint was peeling off the shared wall, the repair had sealed the moisture in, and the pin meter proved it.

FLIR + pin meterfound by
Sealed too sooncause
Costed pre-signingoutcome
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Thermal image of the renovated shower showing a cool zone at the tray
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The process in twenty seconds
What you get

Documents first, then the building, then the numbers.

Twenty seconds, no sound needed: how an inspection runs, and what lands in your report at the end of it.

  • 01Document check, before anyone opens a door
  • 02On-site check, damp and defects, measured
  • 03Each defect costed, so you can negotiate
Buyer guides
A

Damp & mould: a buyer’s guide

The four ways water gets into a building, and what to notice at a viewing.
B

What a Baugutachten actually is

Survey, valuation or agent appraisal: which one you need before signing.
C

Is the flat as big as they say it is?

How Wohnfläche is calculated under the WoFlV.
D

Energieausweis: what changes in 2026

What the certificate proves, and the GEG rules on heating replacement.
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