But unless you've been hibernating, you'll know that the only sensible reason to move house now is if you are on the run from the mafia. Generally, neither I nor my husband is au courant with trends in the property market. His first house, where I later came to join him, was in an area he described to me optimistically as up-and-coming north Islington. It turned out that the local police called it Murder Mile. And having bought at exactly the wrong time, negative equity saw us trapped there for two years.

So it was with uncharacteristic prescience that we took the decision a year ago not to sell our current home, but to stay put and rebuild. All we really needed was a bit more space, and my brother-in-law, who is in the building trade, persuaded us that this could be achieved relatively easily and without the stress and expense of moving. We took his advice, and embarked on an adventure that saw us moving twice in six months, alienating our neighbours and spending, at a conservative estimate, five billion times more than our budget. And strangely, I recommend it.

There are innumerable benefits to having your brother-in-law project-manage for you. He won't let you down because he cares; and anyway you know where he lives. The downsides, however, became evident early on, when he asked me for my thoughts on sanitary ware. Keen to see a man engaging with women's health issues, I began talking to him about the relative merits of towels with or without wings before realising that this is a builder's euphemism for lavatories. We met in a fancy lavvy showroom in, naturally, where after glancing at what was on offer — marble cisterns, antiqued pedestals — I said that, really, they all looked the same. "Well, you can't tell by looking," he replied. "You have to sit on them." Call me old-fashioned, but there are some lines I will not cross, and sitting on a lavatory in front of a man with whom I may share Christmas lunch is one of them.

We were then persuaded that mere loft conversions were for sissies, and we might as well have every internal wall of our home repositioned, the floors reinforced and the windows replaced. Consequently, we were not going to be able to live there. Our initial plan, to rent a room in a local motel for a fortnight, turned into a six-month lease on a flat. And everything would have to go into storage. Add in mortgage payments and rent, and there's no money left for luxury toilets.

The work went as smoothly as possible, barring a disastrous mishap involving 90 years' worth of soot falling into the newly decorated house next door. My brother-in-law behaved throughout like a rather charming pit bull. Our six-month exile seemed interminable and stressful, characterised as it was by two of my least favourite things: decision-making and expenditure. In the past, we had bought flats or houses on the basis that they weren't falling down and the decor was broadly acceptable to us. Thus, my experience of interior design was confined to putting up pictures where some previous occupant had left a nail in the wall. But now my bedside table and floor groaned with catalogues, fabric samples and order forms. We were faced with questions we had never before considered: different paint colours either side of the dado? Pleated or tab-topped curtains? Finally, at the end of our lease, we moved back in, despite the work not being finished. For a further month, we sat on sofas covered in plastic to protect them from the dust.

But now it's done, and more than anywhere we have ever lived, this feels like home. We have chosen everything in it. The children, who were always set against moving, got their way. And we, who wanted a proper family house, have got ours, too. Yes, it's been expensive, but considerably less so than moving would have been. Now we just have to make peace with our neighbours ... and get to work on the garden.

Claudia Winkleman is away