They won't.
They will hit around 5.5, the level they were in 2006, and stay there.
Even when inflation drops, the banks will be creaming it in at those rates and there's NO way they will want to give up that shot in the arm.
Wages will catch up to make things more comfortable.
But those hoping for bargain homes will be disappointed, if prices fall, they won't stay down for long.
I think people (especially those now in their 20s) need to accept that the idea of owning their own home is now something of the past. Young people now will rent until the day they die. It's something they need to plan for. Maybe a new form of pension perhaps, far bigger contributions but also a bigger pay out. Enough to pay rental costs in retirement.
Or perhaps intergenerational living will become normal again, with people only marrying someone who can bring money or property to the table.
Those who do own their homes, by whatever means, will be considered the elite of society. Phrases such as "well they own their house" will be used to describe people who are above others in social standing.
But interest rates are not coming back down again.