Let's talk about money honey - about the real costs behind building a home.
Not the costs on the brochure. Not the cost the sales consultant keeps mentioning to get you through the door.
The advertised base price that caught your attention on the builder's website at 10pm - while you were scrolling through floor plans with a glass of wine and a Pinterest board full of coastal homes and outdoor woodfired BBQ's.
This is the number that grabs you. That pulls you in thinking - 'damn, maybe we should just build?'
However - that number is not your build cost. Not even close. And I want you to know the REAL costs that make up the total for your build.
And please do read on, before you hand over a deposit, sign a tender or fall completely in love with a floor plan.
The gap between the advertised base price and the real number is where thousands of dollars quietly appear and where most people get the shock of their lives - somewhere between pre-construction and handover.
◆ Base Price:
The base price covers the bare bones of your home. The standard structure. The basic functionality. What it almost certainly does not include is site preparation, upgrades, electrical beyond basic inclusions, landscaping, driveways, permits, statutory fees, legal costs or appliances.
So when a builder advertises a home from $350,000 - that's where the luring conversation starts. Not where it ends.
Ok – So What Are the Other Costs?
Every builder packages these costs differently and labels them in their own way. But the fundamentals don't change.
◆ Prime Costs:
These are allowances built into your contract for items not yet selected - tapware, tiles, light fittings, appliances. The problem is - these allowances are often set optimistically low.
The moment you walk into that showroom and start choosing actual products for your actual home - you blow straight through the allowance and the difference comes back as a variation.
Surprise. Not the good kind.
Before you sign your tender ask your builder to set prime cost allowances that reflect what you actually intend to spend. If you want stone benchtops don't accept a laminate allowance. Simple.
◆ Provisional Sums:
Work similarly - they're estimates for work that can't be fully priced yet because the conditions aren't known. Think excavation and earthworks. If the actual cost comes in under the allowance you get credited. If it comes in over, you pay the difference. Both exist to give your budget a starting framework - but if the estimates are unrealistic from the start your budget is already working against you.
◆ Site Costs:
This is the one that blindsides people most consistently. Site costs cover everything involved in preparing your block for construction - soil testing, excavation, levelling, retaining walls, drainage and utility connections. On average they range from $14,000 to $20,000. But a sloping block, reactive soil or poor drainage - can push that number significantly higher. Sometimes $40,000 or more before a single wall goes up.
And you often don't get the full picture until after you've signed your contract.
◆ Statutory Costs:
Are building permits, council fees, energy efficiency reports, bushfire attack level assessments if your block is in a risk zone. Not optional. Not free.
◆ Variations:
Any change made after signing your consolidated tender - will be a pre-contract variation or post-contract variation. These will cost you anywhere from $1,000 to $3,000 just in admin fees per change and weeks of processing time.
This is why making every possible modification before you sign is so critical.
Before the signature changes are free. After it everything has a price tag.
◆ Coastal/Wind Ratings:
If you're building near the coast, add material warranty implications to your list. Yes.
Salt air accelerates corrosion of metals and most manufacturers start reducing warranties (Colorbond roofing in particular) within a certain distance of marine environments. And if you're in a high wind region your home will need to meet specific construction requirements - reinforced framing, impact resistant windows, specialised roofing - all of which cost more than standard options.
◆ Developer Guideline Costs:
Finally if you're in a new estate - read the developer guidelines before you fall in love with a design. They dictate your facade, materials, landscaping and fencing. Non-compliance means redesigns, delays and costs you didn't budget for.
The advertised base price is never the final number. It's the bait.
Knowing everything that sits above and beyond it - before you sign anything - is the difference between a build that stays on budget and one that doesn't.
You now know the list - you can get ahead of the game and ask the right questions.
