A lot of heat is lost through old and/or leaky windows. Is it worth replacing older windows with triple-glazed insulation ones?
Building is generally prohibited in Switzerland. That's why you need a permit. Even for small building projects like a garden shed or a wall.
If you own a house that was built before the 1980s, a renovation may make sense. How much does a total renovation cost in Switzerland?
Is your mortgage expiring in 12 to 18 months? Then you should slowly but surely consider whether an extension or redemption makes more sense.
In the golden October, enjoy your garden and prepare all the plants for the winter. Read everything about October's gardening.