The second house fit-out

I bought the bunk beds before I bought a kettle. That tells you where my head was. The kids were arriving on Friday and the second bedroom had nothing in it but a stack of moving boxes and the kind of echo you get when a room is asking you a question you can't answer yet.

The fit-out of a second house is a rite of passage no one warns you about. You've already done the hard part (or so you tell yourself), which is the leaving. Now you have to make a place where two small people, who didn't ask for any of this, can put their stuff down and feel okay. That sounds simple. It isn't.

Start with sleep, then food, then everything else

The order matters. Get this wrong and you'll spend a weekend watching your kids be tired and hungry while you fuss over the colour of a feature wall.

Sleep first. A real bed, not an air mattress, not a pull-out, not "they'll be fine on the couch for a few weeks." A mattress that doesn't cost less than the sheets. Pillows that aren't the freebies the removalist gave you. Blackout curtains if the room faces east, because kids who already feel unsettled don't need a 5am sun to finish the job.

Food second. A fridge with actual things in it. Milk that isn't UHT in the cupboard pretending to be milk. Bread, eggs, a couple of bits of fruit that aren't bananas already going brown. The fridge is the thing kids open first when they walk in. An empty fridge says you don't live here. A real fridge says you do.

Everything else can wait. Honestly. The lounge, the rug, the wall art (please, for the love of God, no wall art yet), the matching towels. Those are projects for month three. Right now you are buying time, not interiors.

What to spend money on

A short list. Concrete. The things that actually move the needle on whether the second house feels like a real second home or a holiday rental with your name on the lease.

• Beds and bedding: proper mattress, proper sheets, doona that suits the season, two pillows each. Spend here. Cheap sleep is expensive in the morning.
• A working kitchen: one good pan, a sharp knife, a chopping board, plates that aren't paper. You will cook for these kids. Set yourself up to cook well.
• Kid-height storage: a low drawer for clothes, a hook at their height for the school bag, a basket for the random rubbish that comes out of pockets. Autonomy at the second house is gold.
• Toothbrushes and toiletries that live there: not the travel kit, the real kit. Their own. Always there. The toothbrush staying behind is a small thing that does enormous work.
• A reading lamp by the bed: because kids who can't sleep at the new house often can read themselves into sleep, and the overhead light is too clinical for that.
• One ordinary couch: not a designer piece. Something you can flop on with a sick kid and not panic about a Milo spill.

That's the spend list. Add to it if you want. But don't skip from it.

What not to spend money on (yet)

The temptation is to overcompensate. To make the second house better than the first one, plusher, more fun, the cool dad's place with the trampoline and the gaming TV. Don't. The kids will see it for what it is, even the little ones, and the older ones will say so out loud. Worse, you'll have set a tone you can't sustain.

Skip, for now: the matching dinner set, the rugs that look great on Instagram, the second TV in the kid's room (a generation of divorced dads has learnt the hard way), the elaborate art on the walls, the new appliances when the old ones still work, the "feature" anything. You're not building a magazine spread. You're building a home that holds two routines a week.

The other thing not to spend money on, and this one's structural, is matching the other house. If your ex has a particular brand of cereal, a particular sheet thread count, a particular rule about what colour the towels are, leave it alone. Your house. Your standards. The kids will adjust faster than you think. The houses don't have to be the same. They have to each be real.

The "this is not a holiday house" rule

This is the rule I write on a Post-it the day I move in and stick to the inside of the pantry door, because I will forget. The second house is not a holiday house. It is not a place where the rules go on pause. It is not where bedtime drifts to 10pm because we're "having fun." It is not where homework doesn't happen because Dad's place is the relaxed place.

If the second house becomes the holiday house, three things go wrong. The kids start to dread the return to the other house, which sounds like a win until you realise it makes them anxious all week. The other parent gets, fairly, frustrated, and starts treating handovers as a reset rather than a continuation. And the kids learn that you are the parent who is fun but not load-bearing, which is a role you don't want and they don't actually need.

So the rule. Bedtime is bedtime. Homework happens. Vegetables show up at dinner. The screen comes off when it's meant to come off. There's a Saturday job list because that's what living somewhere looks like. STAND BY THE RULES even when you're tired, especially when you're tired, because a tired Friday-night dad who caves on the bedtime is a tired Saturday-morning dad fighting a sugar-crashed seven-year-old.

The second house has rules because it's a house, not a hotel. The kids don't love this in the moment. They feel it later.

The weekend bag and the slow vanishing

In the early months, the kids arrive with a weekend bag. Pyjamas, a change of clothes, a favourite toy, a toothbrush. The bag is a symbol. It says, "I am visiting." Your job, over time, is to make the bag smaller and smaller until one day it's just a school bag because everything else lives at your place too.

This is slower than you'd like. The first time you suggest leaving the pyjamas behind, you'll get a look. The first time you buy a second copy of the favourite teddy (or, more honestly, the second-favourite teddy, kept at your place as the understudy), you'll feel like a fraud. Push through. Each item that stops travelling is a brick in the wall of "this is also home."

A useful test, six months in: does the kid know which drawer holds the underwear at your place without asking? Have they got a friend they invite over here, not just at the other house? Have they argued with you about a wall colour, or asked for a particular dinner because "we always have it on Wednesdays"? Those are the markers. Ownership comes through small frictions, not through grand gestures.

How long until it feels like home

Honest answer, for most kids: six to nine months before it feels normal, twelve to eighteen before it feels like home. Younger kids tend to acclimatise faster (less narrative about what a "real" house is supposed to look like), teenagers slower (more complicated allegiances, more sense of being uprooted, more pride about not letting on either way).

Some signs you're getting there. They walk in and don't ask where things are. They argue with you about household stuff (a fight about whose turn it is to empty the dishwasher is, perversely, a milestone). They bring a friend over without asking permission first. They leave a half-built Lego thing on the dining table and expect it to still be there next time. They complain about something at the house, the carpet, the shower pressure, the Wi-Fi, like a person who lives there.

You'll know. It won't be the day you finish unpacking. It'll be a Sunday afternoon, a few months in, when one of them is reading on the couch and you're cooking and you suddenly realise no one has asked, "Is it nearly time to go back?" That's the moment. Don't make a fuss of it. Just take the win.

Make the bed. Stock the fridge. Hold the line.