For people building homes in wildfire country, a useful protection step can happen early in the build: install the fire-suppression piping before any concrete around the house is poured.
That was the takeaway from one Australian homeowner, who said their bushfire-prep system ended up costing far less than an earlier version while delivering much better coverage.
Here's what to know
In a post on Reddit's r/preppers, the homeowner said they installed 1.26-inch (32-millimeter) rural poly pipe around their newly completed house ahead of the concrete paths. That let them bring roof-sprinkler risers up through the slab rather than add them afterward.
They contrasted the new design with an older system that relied on copper piping and firefighting roof sprinklers, saying the cost gap was dramatic. In their words, "the one ive done for my new house is 1/10th of the price and a shit load better."
According to the post, the setup uses an electric pump connected to a 5,300-gallon (20,000-liter) metal tank and a petrol pump connected to a 43,600-gallon (165,000-liter) rainwater tank. The OP said the two pumps can operate together, so one can help cover the load if the other stops working.
They added that the home itself meets at least a BAL 19 standard, and said the sprinkler system is intended to cool both the roof and the area surrounding the house.
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More background
A big theme of the post was making these decisions while the house is still being built. Installing pipe before the hardscaping is done can make sprinkler placement easier, cut labor, and avoid having to rip up concrete later.
Bushfire-hardening measures can get costly quickly. Based on the OP's account, choosing larger rural poly pipe and working the layout into the build from the start can reduce expenses substantially while also boosting flow and coverage.
Commenters on the thread also shared additional tips. One commenter wrote, "Make sure your system isn't overshooting and your gutters are feeding back to your fire system water tanks, that way you are recycling most of that water to enable your system to run for several times as long as it otherwise could."
Another commenter flagged a problem that can affect petrol pumps during major fires: "Make sure you have a fresh air intake (inside the top of the water tank is good) for any petrol pumps. The fires here in Oz can cause pumps to stall due to oxygen starvation."
What can be done?
Building wildfire protection into a project before construction wraps up can lower future costs. Even without funding for a full roof-deluge system, mapping out pipe runs, sprinkler positions, tank access, and pump backup early may make later upgrades cheaper.
The homeowner said they tested the setup and found some weak spots, including dependence on an inverter and the fact that one pump still has to be started manually. Testing like that can help expose failure points before a fire emergency happens.
As the OP put it, "Hopefully that helps someone save some coin, and some ideas on what to run."
Where can I learn more?
A few related articles look at adjacent parts of the home-protection puzzle, from sprinkler failures and water damage to the cost of system upgrades. They add useful context on how homeowners plan for, maintain, and pay for residential water infrastructure.
• An HOA's refusal to adjust sprinklers led to water damage, leaving one homeowner replacing floors.
• A sluggish HOA left a homeowner with a leaking sprinkler valve and rising repair costs.
• In California, a utility provider expanded cash incentives to revamp homes for water-saving upgrades.
Small infrastructure choices can have an outsized effect on a home's resilience. For anyone planning wildfire defenses, it's worth weighing cost, water, and maintenance early.
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