Contract clause for subsequent purchase price adjustment in the new development area

Ok, may be. I would still be cautious whether that is so easily possible. Assuming that the original poster only wants to sell if he has to pay additional tax, there would be a profit.

After 3 years of personal use, the capital gains tax also no longer applies. That would really be the last thing I would worry about here.

Yes, exactly, for personal use. But now it depends on whether there is a separate purchase contract for the property or not. If yes, then he has not lived there himself. And then it is 10 years. I would just be careful with this, especially if the OP thinks they are already at the limit of what they can afford. Better to consult a lawyer specifically about this.

After 3 years of personal use, the speculation tax no longer applies.

??? Either personal use or not. There is no 3-year rule.

I hardly believe that the notary was so careless and does not ensure that the obligations also apply in the event of resale. These are really standard clauses in the contract.

How would that then work? Would the future buyer have to pay the difference to the investor based on the purchase price of the original poster, even if he has actually already paid a higher price to the original poster?

??? Either owner occupation or not. There is no 3-year rule.

No idea if we are talking about different terms here, but moving into the property for 1 month is not enough to then sell it tax-free with a profit.

No idea if we are talking about different terms here, but moving into the property for 1 month is not enough to then sell it tax-free with a profit.

Where does it say that? In § 23 of the Income Tax Act it literally says "Excluded are assets that are used exclusively for own residential purposes during the period between acquisition or completion and disposal ...". Yes, it is actually enough to live in the property for just one month.