A family in Woonona signed a twelve-month lease the same week we booked the demolisher. Reasonable-looking decision at the time. The build ran a bit over, as builds do, and their lease ran out with the house at lock-up and a fit-out still to go. The rental they'd been in was already re-let. They moved into a smaller place for four months, with a garage full of boxes they'd already paid to store once, and then moved again into the new house.
Two removalists, two bonds, two lots of connecting utilities, and a stretch of everyone's life that was more stressful than any part of the actual build. The rent was never the issue. The lease term was, and nobody had sat down with the build program and the tenancy agreement side by side before signing either.
The house is the part everyone plans. Where you live while it happens is the part that gets sorted in a hurry about three weeks out, and it's worth more thought than that.
The clock doesn't start on demolition day
The first thing to get straight is how long you're actually out, because it's longer than the build.
You're out from whenever the site has to be clear for the service disconnections and the demolisher, which is usually a couple of weeks before anything comes down rather than the morning of. You're back in at occupation certificate, not at practical completion, and there's a tail after the trades leave. In between there's the build itself, and in front of the build there's the stretch after demolition that nobody budgets for — clearing and levelling, a geotechnical investigation now that a rig can reach where the footings go, the surveyor coming back to set out, the engineer finalising the footing design, and then the slab trades getting booked into a queue.
I've written that whole sequence out in the knockdown rebuild process in NSW, and the honest headline from it is that the gap between a cleared block and a poured slab is measured in weeks, not days. Add that to the build duration in how long it takes to build a house and you have the number to put in front of a real estate agent.
Then add a buffer. Not because your builder is planning to run late, but because wet winters here are real, because a variation you decide to make in month four has a schedule cost, and because the last ten per cent of a house always takes longer than the middle eighty. Ask your builder for a program by stage and ask what the realistic worst case looks like. A builder who won't give you a worst case is telling you something.
The lease is the decision, not the rent
Rental terms don't naturally line up with build programs, and the mismatch is where the money goes.
A twelve-month fixed term against a build you expect to run eleven months is the trap the Woonona family fell into. There's no slack in it, and the cost of being wrong isn't a month of rent, it's a whole second move. What you want instead is either a longer fixed term than you think you need, or a fixed term that rolls over into a periodic agreement you can end on notice when the house is ready. Landlords and agents differ on what they'll wear, and it's worth asking directly, early, before you're competing for a property in a tight week. NSW publishes the rules on starting and ending a tenancy, notice periods and bonds at nsw.gov.au, and reading that before you sign is twenty minutes well spent.
The other thing worth doing is telling the agent what you're actually doing. A tenant who is building a house down the road and will hand the place back spotless is a good tenant, and some agents will flex on the term for one. Plenty won't. Ask anyway.
If you have school-age kids, the catchment question decides the search area before anything else does, and it narrows the list quickly in some parts of the Illawarra. Work that out first and the rest of the search gets simpler.
Two housing costs at once
For most people the rebuild period means paying rent and a loan at the same time, and that overlap is a real line in the budget that sits outside the build contract entirely.
I'm a builder, not your lender or your accountant, so I'm not going to tell you how to structure any of it. What I will say is that the number of months matters more than people assume when they're doing the sums early, and the number of months is the one thing that moves. That's the argument for the buffer again. The build cost side of a rebuild is set out in what a knockdown rebuild costs in the Illawarra; the holding costs sit next to it and belong in the same conversation with whoever is financing you.
Two smaller ones in the same category. You still pay council rates on the block while there's no house on it. And your insurance changes the day the house comes down — the existing home policy has nothing left to cover, the builder's insurance covers the works, and the vacant land in between is its own question. Ring your insurer before demolition week rather than after, and get the answer in writing.
What to store, and what to let go
Storage for a year costs more than people expect, and a decent amount of what goes into it never comes out again in any useful sense.
The exercise worth doing, before you pay anyone to move anything: walk the new floor plan and work out what actually has a place in it. The old lounge suite that was bought for a room you're demolishing frequently doesn't fit the room you're building. Neither do most curtains, most rugs bought to a room's dimensions, and the wall unit that was built for a chimney breast you no longer have. Storing furniture for twelve months so you can not use it in the new house is a fairly expensive way to make a decision you could make now.
Measure first, then decide, then store what survived the cut. Sell or give away the rest while you still have a garage to sort it in, because doing it under time pressure with a demolisher waiting is nobody's good week.
One practical note: whatever you do keep, assume the storage unit gets opened once and everything you actually need in the meantime is in the wrong box. Pack a genuinely separate "living out of a rental" set — tools, documents, the kids' things, kitchen basics — and keep it with you.
Living on the block, and why it usually doesn't work
I get asked about the caravan option regularly, and the answer is almost always no.
Putting a caravan or a relocatable on your own block and living there through the build sounds like the obvious money-saver. The obstacles are that you need somewhere legal to connect to for power, water and sewer at a point when all three have just been disconnected or abolished; that occupying a caravan on a residential block as a dwelling has its own approval questions and council-by-council answers; and that an active construction site with your family living in the middle of it is a work health and safety problem that lands on the builder. Once the site fencing goes up, the site is the builder's, and having residents inside it changes a lot.
There are blocks where a version of this works — usually large, usually where the living area can be genuinely separated from the work zone, and always with the council question answered properly first. It's not the default and I'd want to look at the block before encouraging anyone down that path.
The staging move that does work
If your block can take a secondary dwelling, there's a sequence worth considering: build the granny flat first, move into it, then demolish the old house and rebuild the main dwelling around you.
You end up living on your own land through the build with no rent, and at the end you have a second dwelling you can put family in, rent out, or use as a home office. On the right block it's the best answer to this whole problem, and I've watched it work well a handful of times.
The conditions are specific, though. The block has to have the room and meet the requirements for a secondary dwelling, the granny flat has to be positioned so it isn't in the way of the new house's footings, access, crane or scaffold, and it has to be finished and occupiable before demolition starts, which means starting that approval a long way ahead. The approvals for both dwellings need thinking about together rather than one at a time. And there's a live construction site on the other half of your land for most of a year, which is dust and noise and trucks at seven in the morning.
If it appeals, the place to start is whether the block supports a secondary dwelling at all — that's how we run granny flats, and it's a question worth asking before you commit to a rental search.
The small things that catch people
Mail redirection, and the fact that you'll want it running to the rental and then to the new house, which is two redirections rather than one.
Deliveries during the build. Your address technically exists but there's no letterbox and nobody there, so anything ordered for the house needs a plan.
Pets, which narrow a rental search more than kids do in some markets, and which cope badly with two moves.
The car. If the rental has one space and you're storing a trailer, a boat or a second car somewhere, that's a cost and a phone call.
And the handover date itself. Don't book the removalist to the day. Book it with a week's grace after the occupation certificate is expected, because a house that's three days from finished is not a house you can move into, and rescheduling a truck is easier than sleeping among boxes in a house without a working kitchen.
How I'd sequence the decisions
Get the program from the builder before you look at a single rental listing, and get it by stage rather than as one number. Add your buffer to it and treat that as the real term.
Then work out the constraint that narrows the search hardest — schools, or pets, or staying near the block so you can drop past — and search on that.
Then take the lease term seriously and negotiate it, rather than accepting the standard twelve months because it was on the form.
Then do the furniture cull against the new floor plan, and store only what survived.
Then, once the rental is signed, put the demolition date, the disconnection dates and the removalist in the same calendar, and give yourself the fortnight of overlap at the front end. Moving out on the day the machine is booked is how people end up doing this badly.
If you're still weighing up whether to rebuild at all rather than work with the house you've got, renovate or knock down and rebuild has that call in it, and the living-arrangements question is a fair part of the decision — a renovation you can stay in through is worth something real.
We run knockdown rebuilds across Wollongong, the Illawarra and the Southern Highlands, and the program we hand you is by stage, with the realistic dates rather than the optimistic ones, precisely so you can sign a lease against it — that's set out on our knockdown rebuild page. If you're at the stage of working out timing, send through the address on the contact page or ring 0434 037 851 and I'll give you an honest read on how long you'd be out.
Want a hand with this at your place? Get a free quote or call 0434 037 851.