Why Your Capital Improved Value Climbed While Property Prices Fell

I nearly filed an objection over 12% once. My Melbourne unit's capital improved value (CIV) jumped from one rates notice to the next, and in the same month two identical units in the building sold for less than the previous year's asking price. I couldn't square that circle until I understood how statutory valuations are actually produced. They're a different animal from the market value an agent quotes you.

What a capital improved value actually is

A capital improved value is the total value of your land plus any improvements on it—the dwelling, shed, fences, the lot. Councils in most states use CIV to calculate rates, and state revenue offices often use it for land tax. A site value is just the land component. When your CIV rises, your rates and potentially land tax follow.

It's a statutory value. A market appraisal is a different animal. A licensed valuer acting for a buyer or bank inspects the property, checks condition, looks at tenancy status, and compares recent sales of similar places. The valuer-general's office does none of that for your rates notice.

Why it can rise while sale prices fall

Two things drive the gap. First, the valuation date is lagged. Many councils value your property as at 1 January the year before the notice lands. That means a rates notice issued in mid-2025 might reflect the market as it stood in early 2024. If prices fell after that date—which they did in plenty of pockets—your CIV can still be climbing because the snapshot predates the drop.

Second, mass appraisal. The valuer-general's office values thousands of properties at once using computer-assisted modelling and broad sales data. They don't walk through your unit or check whether your bathroom is original from 1987. I once saw a CIV for a property with a failed retaining wall that would have cost a five-figure sum to fix. The statutory value didn't reflect that defect because nobody had looked.

Then there are the legal assumptions. A statutory valuation often assumes the property sold as an unencumbered freehold with vacant possession, on the open market, with no tenancy in place and no urgent repairs needed. Those assumptions can push the number higher than what you'd actually get from a buyer who sees a tenant with six months left on a lease and a cracked driveway.

Don't assume statutory values are always low. I've seen CIVs come in below market too, because the mass appraisal model missed a recent renovation or a view premium. The two numbers measure different things.

When objecting is worth your time

Objecting is reasonable if you can show real market evidence. Pull the last three to six months of comparable sales—same suburb, similar size, similar condition. Not the listing price, the sold price. If your CIV is more than 10 to 15 percent above those sales, you've got a case worth taking to the objection stage.

You'll need more than a gut feeling. I'd order a private valuation from a certified practising valuer before lodging anything. That costs money, so weigh it against the rates increase you're trying to reverse. If your CIV jumped $50,000 and the rates increase is only $200 a year, a $600 valuation fee might not pay for itself for three years. Run that arithmetic first.

The objection window is usually about two months from the date on your notice, but check the fine print. Some states allow you to object to the valuation, then separately apply for a rates remission. I'm not a lawyer, and the process varies by council and state, so check your local rules before you commit to it.

What I'd do

I wouldn't object just because the number went up. I'd object because the number doesn't match reality. Get the comps, get a valuation if the gap is big enough, and lodge within the window. If you can't produce evidence, you'll lose and waste the fee.

One last thing: a high CIV isn't always bad news. If you're selling, some buyers conflate a high council valuation with a high market value. I've seen that confusion help a vendor once—though I wouldn't count on it. For most landlords, it's just another line on the rates notice. The trick is knowing when that line is wrong.