After 100+ Renovations, I Finally Understand Where the Money Actually Goes

A property in Glen Waverley made $500,000 profit in six months. Sounds like a fairy tale, right? It's not. But the profit wasn't because of some magic renovation formula. It came down to two things I've learned the hard way after renovating over a hundred properties across Melbourne.

And the kicker is, most of the renovation advice you see on social media gets both of them completely wrong.

Principle one: renovate for your buyer, not for yourself

The Glen Waverley property sat in a pocket where entry-level houses start around $1.3 million but premium renovated homes push $3 million to $4.5 million. The buyers in this bracket — dual-income professional families, typically — spend their Saturdays inspecting three or four properties in the $2.5M to $3M range. They know what $3 million buys. They've formed a mental template.

So when we renovated this property, we didn't design for what we liked. We designed for what a $3 million buyer expects. That meant demolishing a load-bearing wall to create an open-plan living area — $30,000 including engineering and permits. I didn't even blink. Because I knew that without an open-plan layout, a buyer with a $3M budget turns around and walks out the door before they've seen the bedrooms 1.

The kitchen was full timber cabinetry with Taj Mahal quartzite benchtops. That stone choice was deliberate — the market is saturated with all-white Caesarstone kitchens. Every second renovation in Melbourne looks identical. The wood-tone kitchen with a premium natural stone broke the pattern. Differentiation sells.

Now contrast that with a first-home buyer property in the southeast — say a three-bedroom house in Cranbourne priced at $650,000. The buyer profile is completely different. These are young families or couples who care about three things: is it clean, is it functional, and is the price right?

For that property, you spend $15,000 on new SPC flooring ($50-62 per square metre), a full interior repaint, new tapware, and maybe new cabinet handles in the kitchen. You don't touch the bathroom beyond a deep clean and maybe a new vanity. You absolutely do not install stone benchtops. You do not reconfigure the layout. Every dollar you spend above functional-and-clean is wasted, because the buyer can't pay you for it 2.

"If you've renovated an investment property so nicely that you want to live in it yourself, you've spent too much," I tell our renovation team. "The moment it feels like home, the numbers don't work."

Principle two: the profit is locked in before you swing a hammer

Read this sentence twice: the profit on any renovation or development project is determined before you start work. Not during. Not after. Before.

If you pay market price for a property — or worse, if you buy at auction and overbid by $100,000 to $200,000 — your renovation margin is already gone. You're spending $80,000 on a renovation to get back to zero.

The Glen Waverley property worked because we bought it below market through a private sale negotiation. The vendor was motivated (divorce settlement), the property presented poorly (original 1990s condition, terrible photos in the listing), and there was no auction pressure. We controlled the price.

This is fundamentally a numbers game. You need to be inspecting properties consistently — every Saturday, without fail. Based on my experience, roughly one in twenty auction outcomes produces a genuine bargain where the final price lands below fair value. Sometimes the auction passes in and the vendor accepts a lower post-auction offer. Sometimes there's only one bidder. Sometimes the marketing campaign was poorly targeted and the right buyers didn't show up 3.

You cannot manufacture these opportunities from your couch. You manufacture them by showing up, repeatedly, until the statistics play out in your favour.

The small details — whether your stone costs $180 per square metre or $220, whether your flooring is $50 or $70 per square metre — these are marginal. They might save or cost you $10,000 across a whole project. The purchase price determines whether you make $300,000 or $500,000. It's not even close.

The renovation cost hierarchy (what actually moves the dial)

After a hundred-plus renovations, here's my hierarchy of what impacts value, from most to least:

1. Layout and flow — 60% of value impact. Open-plan living is the single biggest value driver in any renovation above $1M. Below $1M, it matters less because the buyer profile is different. But in the $1.5M+ bracket, a closed-off kitchen is a deal-breaker. Budget $20,000-$30,000 for a load-bearing wall removal including structural engineering.

2. Kitchen — 25% of value impact. The kitchen sells the house. Full replacement with quality cabinetry, stone benchtops, and integrated appliances runs $25,000-$45,000 depending on size and specification. For investment properties below $800K, a kitchen refresh (new handles, new splashback, maybe new benchtop) at $3,000-$5,000 achieves 80% of the value uplift at 10% of the cost 4.

3. Flooring and paint — 10% of value impact. These are the lowest-cost, highest-perception-change items. SPC flooring at $50-$62/sqm including installation. Full interior repaint at $5,000-$8,000 for a standard three-bedroom house. Combined cost: under $15,000. Makes a 1990s house look like 2024.

4. Bathrooms — 5% of value impact. This surprises people. Bathrooms are expensive to renovate (minimum $15,000-$20,000 for a full gut-and-rebuild) but have a low return-on-investment for most property types. For an investment property, replacing the vanity, tapware, and mirror ($2,000-$3,000) achieves 90% of the visual upgrade.

The numbers I'm seeing consistently: a $20,000-$30,000 cosmetic renovation on a sub-$800K property adds $50,000-$80,000 in market value. A $80,000-$120,000 structural renovation on a $1.5M+ property adds $200,000-$350,000. The key is matching your spend to your buyer profile 5.

Three renovation disasters I've seen (and how to avoid them)

Disaster 1: The over-capitaliser. A client came to us after spending $180,000 renovating a house in Mitcham that he'd bought for $950,000. The renovation was stunning — custom joinery, heated bathroom floors, landscaped Japanese garden. He listed it at $1.35 million, expecting a $220,000 gain. It sold for $1.12 million. He lost $10,000 after costs because his renovation exceeded what the suburb would pay for. Mitcham's ceiling at the time was around $1.1M to $1.15M for a renovated house. No amount of heated floors changes that ceiling 6.

Disaster 2: The DIY hero. Another client tried to renovate a Frankston property himself to save money. Twelve months later, the renovation was half-finished, the property had been vacant the entire time (costing $30,000 in lost rent and holding costs), and the quality of work was so poor that we had to strip most of it out and start again. Total cost including the redo: $95,000. A professional renovation would have been $45,000 and taken eight weeks 7.

Disaster 3: The suburb ceiling ignorer. Possibly the most common mistake. Every suburb has a price ceiling — a maximum that buyers will pay regardless of what you've done to the property. Spending $80,000 on a renovation in a suburb where the ceiling is $50,000 above the purchase price means you're spending $30,000 for the privilege of creating a nicer house that someone else will enjoy. You need to know the ceiling before you start. We check comparable sales of renovated properties in the same pocket before we budget a single dollar.

The lesson across all three: renovation is not a creative exercise. It's a financial exercise. Every dollar has to be justified by a return. If you can't point to comparable sales data that supports the spend, don't spend it.

When renovation beats development (and when it doesn't)

People often ask me whether they should renovate or develop (subdivide and build). The answer depends entirely on the numbers, not your preferences.

Renovation works when:

• The property is in a suburb with a price ceiling at least 30% above the current unrenovated value
• The renovation cost is under 15% of the expected post-renovation value
• You can complete the work in under 12 weeks (longer timelines eat your holding costs)
• The buyer profile in the suburb responds to the type of renovation you're doing

Development works when:

• The land size supports two or more dwellings under GRZ or RGZ zoning
• The frontage is 15 metres or more (for dual-occupancy) or 18 metres+ (for three lots)
• The end-value of multiple dwellings exceeds the cost of construction plus the land purchase by at least 20%
• You have the capital to fund a 12-18 month timeline without rental income from the site [8]

For most of our clients in the $600K-$900K bracket in Melbourne's southeast, renovation plus a granny flat addition is the sweet spot. You keep the existing house rented during construction ($450-$550/week income), build a 60sqm granny flat for $130,000-$160,000 in the backyard, rent the granny flat at $350-$500/week, and your combined yield jumps from 3.5% to 5.5-7% 9.

That approach generates income from day one, doesn't require a long vacancy period, and preserves the development option (subdivision) for later when the numbers improve further.

The renovation game is simpler than people make it. Buy below market. Match your renovation to your buyer. Don't exceed the suburb ceiling. And for investment properties, remember: functional beats beautiful, every time.