To assess the humidity issues you're describing in the property, let’s break down the visible problems and their potential causes. ### Observations and Concerns 1. **Humidity Spots on the Facade**: - The humid spots on the top facade, especially due to the attic owner's watering of plants, suggest possible **water infiltration or poor drainage**. If water is consistently directed towards the facade, it can lead to moisture buildup, which can percolate through the walls. 2. **Ceiling and Wall Damage in the Toilet**: - The photo shows signs of water damage, including potential mold growth and deterioration of materials. Stains on the ceiling are indications that water is either condensing, leaking, or being transported from another area. 3. **Ground Floor Capillary Humidity**: - Capillary action in building materials can occur when moisture from the ground is drawn up through porous materials like concrete. If there are holes and crumbling concrete, these are red flags indicating that the integrity of the waterproofing might be compromised. ### Linking the Issues - **Connection of Upper and Lower Moisture Problems**: - The moisture from the top (due to watering or roof issues) can travel down through the building, especially if there are cracks or poor sealing in the walls. - Additionally, if the facade isn’t properly sealed or has poor waterproofing, it can introduce water into the building structure, contributing to lower-floor humidity issues. ### Potential Risks and Complications 1. **Structural Concerns**: - Continuous water exposure can weaken structural components, especially in concrete and brick. - Mold infestation is a health concern and can cause structural damage, necessitating costly remediation. 2. **Complicated Repairs**: - Fixing these issues could range from simple to complex, depending on the extent of the damage: - **Surface treatment** (painting or sealing) is easier but may not resolve underlying issues. - **Structural repairs** (e.g., cracking or reinforcing walls) are more involved and costly. 3. **Monitoring and Maintenance**: - Long-term solutions may include improving drainage, installing vapor barriers, or enhancing facade waterproofing. Each of these solutions can vary in complexity and cost. ### Verdict Given the visible signs of humidity and potential structural issues: - **Red Flag**: Yes, these humidity problems are a significant concern. They indicate potential structural integrity risks and possible health hazards due to mold. - **Recommendation**: Before proceeding with the purchase, consider conducting a **detailed inspection by a qualified engineer** to evaluate the extent of the damage and the need for repairs. Understanding the root causes and the necessary remediation will be crucial in making an informed decision about this property.