I don't think it is easy to ride out large increases in housing though, however savvy (or 'opted in' to awareness) you are.
I've done a quick Google of costs, and found some figures for Mr and Ms Average buying an average house, with and without average childcare costs:
The average house price in the UK is £285,000 (YouGov) with huge regional variations.
With a 10% deposit (which would be difficult to save on that salary), a mortgage of £256,500 would cost £1425 per month at 4.2% (moneysavingexpert calculator) assuming that no fees have been added to cover arrangement costs, solicitor, estate agent and removals.
The median salary is £31,000 (Indeed.com) across all age ranges, and this will, of course, be lower in younger groups who are likely to have newer mortgages.
A salary of £31k would give Mr/Ms Average, assuming a pension contribution of 6% and a student loan repayment of £27 a month, a take-home of £1965.82 (thesalarycalculator.co.uk).
This would leave about £540 a month for food, transport, council tax, energy, water, phone, TV etc for a single person.
It would take a rise of only 4% on the £256,500 mortgage to take the repayments to £1980, which is more than the take-home pay before any other expenses.
Even if we assume that most houses are bought by couples with two salaries, and that both partners earn the average of £31k with the same offtakes, we are looking at a disposable household income of £2505 a month ((£1965x2=£3930, minus £1425), and childcare may well have to be paid out of that £2505. According to day nurseries.co.uk the average cost of a full time nursery place per child is £14836 pa for an under-two, and £14539 for a two year old, which comes to £2448 per month for a family with one of each. This would more than wipe out one of the salaries, and even on the 4.2% mortgage there would be little or nothing left for expenses. State help for childcare doesn't kick in until over 3, and even then will not cover full-time places.
£2448 (childcare) + £1425 (mortgage) =£3873, leaving the princely sum of £57 a month for everything else, and if the mortgage went up even a tiny bit even that would be wiped out.
I don't think that either common sense or a knowledge of brain surgery could make that work.