For me, that would also be too high a risk at that income. I would either save more or reconsider my own expectations.
In the time it takes to save more, prices have increased many times over, and on top of that, you don't know where interest rates will stand. In the last 10 years, at our company, at least 20 people have built homes that I know of. For the first ones, the interest rates were of course significantly higher, around 4-5%. They always complain about the "high" interest rates. They rarely realize that their house cost less than €300k. From that point on, interest rates have continuously fallen, but prices have risen at least!!! to the same extent. And now, with the first refinancing, they are naturally the ones laughing. People who could have afforded to build a house 3-5 years ago and therefore already bought a plot back then are now considering selling the plot again because, despite lower interest rates, new construction is no longer feasible for them. What I want to say is that equity is important, but starting to save now and building in 5 years hardly makes sense to me. If no significant salary increases are expected, you won't be able to afford it in 5 years either. Construction prices will hardly decrease, nor will interest rates. So, I would rather spread the financing over about 5 years and pay off part of my house instead of rent. It is important to consider what I absolutely need or where I can save, for example (house size, outdoor area, basement or attic development, garage, equipment, furnishings, own labor...).