How do I assess the structural condition of a property that I want to buy as my own home?

Systematic analysis: How to properly evaluate the substance

The building envelope: The expensive protective shield

If you want to assess the structural condition of a property , the work begins outdoors . The building envelope (roof and facade) is the most expensive part of the house. It protects your investment from the elements. Poor structural condition in this area can quickly cost six figures.

First, look upwards. Are any tiles missing? Does the roof appear wavy? A roof has a lifespan of approximately 40 to 50 years. Once this time has elapsed, the structural condition of the property must be critically examined. Also, check the facade for cracks. Small hairline cracks in the plaster are often harmless, but deep cracks can indicate foundation settlement, which can severely affect the building's structural integrity . Pay particular attention to the base of the building: Is the plaster peeling or is there any discoloration? These are early signs of rising damp, which can endanger the entire building's structural condition .

Dampness and basements: The invisible danger

structural condition of the property is often best assessed here , as there's less "makeup" in the basement. Trust your nose when you enter. Does it smell musty or earthy? A musty odor is a warning sign of mold or water damage.

Look in the corners and behind shelves. Damp walls are the number one enemy of a healthy building structure . If you see efflorescence ( white salt crystals) on the walls, there's water in the masonry. Repairing damp damage is complex and expensive. A sound building structure requires a dry basement. Also, ask about past flooding. A house that regularly gets damp is in a permanently precarious building condition .

Building technology and energy: The heart of efficiency

While walls can last for centuries, technology is more short-lived. The structural condition of a property is now largely defined by its energy efficiency. Take a look at the heating system. How old is the burner? An oil or gas heating system often needs to be replaced after 15 to 20 years. If the system is 25 years old, you need to add the cost of replacement (e.g., with a heat pump) directly to the purchase price to determine the true value of the property's structural condition .

Electrical installations are also crucial for the structural condition of a property . In older houses, wiring and fuse boxes often no longer meet today's safety and performance standards. Request a safety certificate (SiNa), which must be no more than five years old. An outdated electrical system significantly degrades the structural condition of a property , as walls often need to be opened up to install new wiring.

Windows and insulation: The comfort factor

Windows are the eyes of a house and crucial for the energy efficiency of a building . Check the year of construction, which is often stamped on the frame. Single-glazed windows are a no-go today and a sign of poor energy efficiency . But even double-glazed windows from the 1980s are often cloudy or leaky.

Open and close several windows. Do they stick? Is the wood rotten? Replacing all windows is a significant investment, but it immediately improves the building's condition . Also, ask about the insulation. An attic that becomes a sauna in summer and is freezing cold in winter indicates a lack of insulation. A well -maintained building saves you on heating costs every month. The cantonal building energy certificate (GEAK) provides you with detailed information about the building's energy efficiency .

Documents and lifespan: A look inside the files

Not every defect is visible to the naked eye. To make a final assessment of the property's structural condition , you need to review the documents. When were which renovations carried out? Are there any invoices?

A house is like a car: every component has a lifespan.

• Kitchen/Bathroom: approx. 20–30 years.
• Heating system : approx. 15–20 years.
• Windows: approx. 30 years.
• Roof: approx. 40–50 years.

Create a list of the building components and their ages. If everything dates back to 1970, you have a huge backlog of necessary investments. The visually appealing appearance then masks the factually poor technical condition of the property . Therefore, the structural condition of a property is also a mathematical calculation of its remaining useful life.

When you need an expert

As a layperson, you can spot obvious defects, but you can't see inside the walls. If you're unsure whether the property's condition justifies the price, consult a building surveyor or architect. The cost of such an inspection (usually around 500 to 1,000 Swiss francs) is money well spent. The expert will see cracks, thermal bridges, and dampness that you might otherwise overlook. They can give you a precise estimate of the cost of bringing the property up to modern standards. Never rely solely on the seller's or real estate agent's statements when assessing a property's condition .

Conclusion

Assessing the structural condition of a property is the buyer's responsibility. Don't be fooled by home staging or a fresh coat of paint. Proceed systematically: from the roof and facade to the basement, then on to the building services and windows. Poor structural condition isn't a deal-breaker, but it must be reflected in the price. Only those who know the costs of necessary renovations can negotiate realistically. Buying a house with deferred maintenance at the price of a new build is the biggest mistake you can make.

Take your time during the viewing and don't hesitate to ask critical questions. The structural condition of the property determines whether your home will be a haven of peace or a perpetual construction site.

If you would like to have the condition of a property professionally assessed or are looking for support in evaluating investment needs, Loft offers you competent analyses and assistance.

Glossary

• Structural condition of the property: The current technical status of a building, taking into account age, wear and tear, and maintenance work carried out.
• Investment backlog: The sum of postponed but necessary renovations that negatively affect the structural condition of the property .
• SiNa (Safety Certificate): A mandatory document confirming that the electrical installations are safe. Important for assessing the technical condition of a building .
• GEAK (Building Energy Certificate): A certificate that assesses energy efficiency and allows conclusions to be drawn about the energy-related structural condition of the property .
• Building fabric: The essential, durable parts of the building (foundation, walls, ceilings, roof) that form the core of the property's structural condition .