OffGrid Masterplan

— Mick. It'll still be standing in fifty years.

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Tiny Home Service Core Planning

Build a safe, functional off-grid shelter with Australian standards and realistic budgets.

Mick O'Brien, OffGrid Masterplan author

By Mick O'Brien · carpenter & builder · sheds-to-homes, cabins and things that stay up in a storm

“My first 4x3m shed slid two metres in the storm because I forgot to pour a 150mm concrete slab.”

Sorting the Wet Trades, Wiring and Frame

Budget Ranges in Australian Dollars

ComponentCost Range
Power System$2,000–$5,000
Water System$1,500–$3,000
Structural Frame$3,000–$7,000
Insulation & Cladding$2,500–$5,000
Permits & Legal Fees$500–$1,500

Common Mistakes

Service Intervals I Set on Every Tiny Home

TaskFrequency
Solar panel cleaningEvery 6 months
Water filter replacementEvery 12 months
Battery health checkEvery 3 months
Structural inspectionEvery 12 months
Electrical system auditEvery 24 months

The Tools I Run on Site

What People Ring Me About Before We Cut Any Timber

Council Sign-Off: What the Planner Looks for First

Yes, but check local council regulations. Minimum 15m² and AS/NZS 1170.1 compliance required.

How I Cut Power Costs on Tiny Home Builds

Solar + battery system (AUD $2,000–$5,000). Avoid diesel generators due to maintenance costs.

Pressure, fittings, backflow: the three water checks I run before handover

Use a 100L rainwater tank with a 1-micron filter and UV treatment. Regularly test for contaminants.

Council Bylaws and Off-Grid Builds: A Lesson the Hard Way

Register with local council, obtain a building permit, and ensure compliance with AS/NZS 3000 for wiring.

Service Core Jobs I Won't Let Clients Touch

DIY for non-critical tasks (e.g., insulation). Hire licensed electricians for wiring and plumbing.

Conclusion

Get the budget, compliance, and safety sorted before you touch a saw. I run every job against AS/NZS first and keep a maintenance float tucked aside, because cutting corners early means paying for them later. Learned that the hard way on a 4m2 slab where a council's drainage bylaw got overlooked in the original paperwork. Spent three weeks arguing my case and forked out for an engineer to redraft the whole thing — ate a solid chunk of what should've been profit. So do yourself a favour: check every local bylaw yourself. Skip that step and the redraft will blow your numbers before the first piece of timber is even ordered.

The Permits and Safety Items I Sort Before the Frame Goes Up

Stick to AS/NZS standards and your local council regs — that's not optional, it's the baseline. Electrical work goes to a licensed sparkie, full stop. I don't touch it, you shouldn't either, and Off-Grid Master carries no liability for dodgy installs or paperwork you failed to lodge.

⚠️ SAFETY WARNING: Working with electrical systems, structural modifications, or gas installations carries inherent risks. If you are not confident in your abilities, always engage a licensed professional.

Worth a watch: Architect’s Advice: 7 Common Layout Mistakes + What to Do Instead · baixu

He walks through seven layout mistakes that can trip you up with Aussie codes, and shows the simple fixes that keep your structure sound. I use his checklist before I frame any wall. — Mick O'Brien

When to Ring the Engineer

While many off-grid projects are achievable as DIY, certain situations require licensed professionals:

Always check local regulations and obtain necessary permits before commencing work.