[quote=“Jopinaattori, post:4286, topic:1478, full:true”]Do I understand correctly that by investing 250 euros per month in an index since 1997, the value of the investment would currently be 300 k€?
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Over 300k, if invested since 1993 in the SP500, which is probably one of the most invested-in indices in the “world”:

[quote=“Jopinaattori, post:4286, topic:1478, full:true”]From experience, I know that in the 00100 - 00210 postal code area, apartment prices have risen by at least 600% since 1997, meaning 8000 mk/m2 has changed to 8000 euros/m2.
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Yes, prices have developed approximately like that in those areas, as you said, but 400% is the average price increase in the Helsinki area; individual areas develop differently. It’s not relevant to compare the best areas, it’s like comparing individual stocks to this.
[quote=“Jopinaattori, post:4269, topic:1478, full:true”]In hindsight, it is clear to me that it would have been a mistake to have been a tenant from 1997 to this day.
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I agree with you on your 80k apartment at least, as my calculations for rent were a bit straightforward for the period 1997-2006. But as a generalization, I still wouldn’t say that owner-occupied housing or real estate investing is in any way a winner compared to stocks.
[quote=“Jopinaattori, post:4266, topic:1478, full:true”]This only works when, at the same time, apartment prices have risen and every month “rent” has been paid to the bank in the form of amortizations and interest, and maintenance fees to the housing company.
This is reality, and alternative investments are just theoretical calculations where the new monthly capital is very small.
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These investments in the index continue to rise due to the compound interest effect, and I don’t believe that the value of the example 320k apartment would grow faster. But an apartment bought in 1997 in valuable areas of Helsinki can indeed be considered a successful investment!