We are starting to think about launching ourselves into the real estate market here in Switzerland and buy a house. (i.e. we are in the initial research steps)
Of the options regarding the state of any house we may be interested in, obviously we could choose from new build (no renovation) or a run-down pile of bricks (full-scale renovation)
This leads to a question. For renovation/DIY topics in Switzerland, does anybody know - or have experience of - the following : What can you legally do yourself, what can you not legally do, what work is notifiable to the Gemeinde / Bauamt, how willing are tradesmen willing to work with you, etc.
Reason is, of course, cost. A friend of mine had a plumber in to move a radiator from the left-hand side of the vertical pipes to the right-hand side. Easy job and all went exactly to plan. Cost was 2500,-SFr. Yikes.
From my experience in the UK, I give an example - gas central heating. My house had no central heating. I did some research on installing central heating myself. Most people gave many different stories about what you can do, ranging from everything to nothing at all. I gave up and spoke directly to CORGI/HSE at the time and their line was that the legal regulations stopped short of forbidding DIY gas installations (in addition, they sent me the regs). The reality is that they only recommend an official gas installer to do the work, but it is complelety legal to do it all yourself -- so long as you are competent to do the job in hand. The regs did not define competent (in the sense of you must have such and such qualifications, etc), so a long, explanatory, discussion with CORGI followed. Essentially, "competent to do the job in hand" applies to anything you do and "job in hand" is relative - you don't need to do a four year diploma course to be able to change a light switch. OK, this was all in 2000, so maybe things have changed since.
The caveat of all of this is that if an accident occured, (in the UK) there would be an investigation and you could end up in court to have your competence assessed (scary prospect). But, this actually applies to anything you do yourself - DIY garden wall collapses resulting in injury, and so on.
So, that was that experience, and I suspect it may be similar here.
I have briefly rummaged around some German / Swiss forums (mainly regarding electrical stuff), but the replies to people's queries are equally confusing and it seems sometimes that electricians here can be highly protective of their industry and severely condone people for even daring to ponder the thought of replacing a single light switch.
A funny thing to finish - I find people here to drop jaws and almost faint in sheer astonishment when they see you doing even the most simple of 'diy' things. Even changing the wheels on my car results in this effect, followed by a highly smug attempt to discredit your work by asking if you have a torque wrench, at which point the smugness evaporates when they see I have one in my hands. Suprisingly, nobody has asked if it has a current and tracaeable calibration certificate ;-)
Cheers,
Chris