Shane Gibson is biding his time. The project manager, 55, sold his four-bedroom semi-detached home in Southgate, north London, in June 2022 for £1.5 million and moved into a rental house with his wife and two children. He’s looking for another fixer-upper in the area, but doesn’t want to pay more than £1 million. His chances look good. House prices in the UK fell for the sixth month in a row in September, according to Halifax, down to an average £292,000 — 4.7 per cent lower than this time...