Where is the best place to start?
Not with the bathroom, but with a sober walk through the home. Where do you need to steady yourself? Where is it too dark in the evening? Where do you trip over an edge, a rug, a cable? These points cost little to fix and prevent exactly the falls that most often lead to a hospital stay.
Only then is it worth looking at the big items. Many advice centres offer an on-site home check for this – often free or for a small fee.
What does a barrier-free bathroom cost?
Replacing a bathtub with a level-access shower is the classic conversion and usually the most expensive single item. It involves more than the shower itself: the floor has to be opened, the waterproofing renewed and the drain repositioned, often with new tiling and a new door.
Allow several weeks of lead time and a few days without a usable bathroom. Get at least two quotes and have the dimensions confirmed in writing – the manoeuvring space in front of the WC and the clear door width determine whether the bathroom will still work later with a walking frame or wheelchair.
Who contributes to the costs?
There is no single pot but several, some of which combine. Certain aids are covered through the state and disability insurance schemes – the scope differs depending on whether entitlement arose before or after retirement. Supplementary benefits can cover costs that support independent living. On top come cantonal and municipal programmes, which vary widely.
Advice centres such as Pro Senectute or the cantonal offices for accessible construction know the local situation and help with the application. That route is almost always faster than researching it yourself.
What does standard SIA 500 require?
Standard SIA 500 «Barrier-free construction» sets out how homes must be built to be usable with a walking frame or wheelchair: door widths, manoeuvring spaces, threshold heights, operating heights. It is not mandatory for a private conversion in an existing building, but it is the best available benchmark.
In practice: if you are converting anyway, follow those dimensions even if you do not need them yet. The extra effort during the work is small and very hard to make up later.
And if I rent?
Then you need the landlord’s consent in writing. Small adaptations that can be removed without trace are usually unproblematic. For structural work, the decisive question is whether removal will be required when you move out – put that explicitly in the agreement.
Many co-operatives and institutional landlords contribute to such adaptations, because they improve the property lastingly and secure long tenancies. Asking is almost always worthwhile.