What does a $30,000 commission actually buy?

Sell the median Auckland home through the city’s biggest agency and the commission comes to about $30,600 including GST at published rates; RNZ put the figure at just under $30,000 on a $1 million sale in July 2025. Whether a real estate commission is worth it in NZ usually gets argued in the abstract, and abstractions are kind to big numbers. So treat it like any other invoice instead. Ask what’s on it, line by line, and what each line costs when you buy it on its own.

Most of what a commission covers can be bought separately in 2026: professional photography from about $180, a private Trade Me listing from $599, a conveyancing lawyer from about $1,500, staging from around $2,000 if you want it. The one service with no shelf price is the agent’s negotiation, and the best like-for-like studies found it didn’t produce higher sale prices. The bundle is real. The bundle’s price is the question.

Where the $30,000 comes from

Barfoot & Thompson, Auckland’s largest agency and one of the few that publish a rate card, charges 3.95% on the first $400,000 and 2% on the balance, plus GST, with no admin fee (checked July 2026). On the REINZ Auckland median of $940,000 (July 2026), that’s $15,800 plus $10,800, so $26,600, plus $3,990 GST: $30,590 all up. On the national median of $760,000, the same card gives $23,000 plus $3,450 GST, about $26,450 including GST. Most other agencies add an admin fee of about $500 as well, and a vendor-paid marketing campaign of $2,000 to $5,000 usually sits on top of everything. We’ve worked the fee maths through tier by tier in a separate post; this one is about what arrives in exchange.

The bill, itemised

Here’s what a full agency service provides, next to the 2026 price of buying each piece independently.

Two things stand out once it’s on paper. The biggest professional costs aren’t inside the commission at all: your lawyer is paid in any sale, and most agencies bill marketing separately on top of the fee. And if you bought every buyable line at the generous end, meaning the full photography package, a top-tier Trade Me listing, staging and a sign, you’d land somewhere around $5,000 to $7,000. That’s straight arithmetic on the sourced prices above, set against a commission of $26,450 to $30,590 including GST on a median or Auckland-median home.

The line you can’t buy off the shelf

Which brings us to negotiation, where the honest case for agents lives. A good agent negotiates property every week; you’ll do it a handful of times in your life. They’re a buffer between you and the buyer who just called your kitchen “a project”, and they’ve watched deals die in ways you haven’t imagined yet.

The trouble starts when researchers test whether that skill shows up in the sale price. Two studies have done it properly, comparing similar homes in the same market sold with and without agents. Stanford economists Bernheim and Meer studied university housing, where staff could sell through an agent or a free listing service: agents sold homes faster but did not achieve higher prices, and after commission their sellers netted less (NBER working paper 13796). In Madison, Wisconsin, where a for-sale-by-owner website competed directly with the agents’ MLS, Hendel, Nevo and Ortalo-Magné found the same pattern: agent listings sold faster and more often, but not for more money (NBER w13360, published in the American Economic Review). Both are American studies of single markets, and their sellers were probably better organised than average. They’re also the only like-for-like evidence anyone has, and neither found the premium. No NZ study has compared like with like; we’ve written separately about the local Cotality data and its property-mix caveats.

Fairness wants the other number too. Over the past decade in New Zealand, 76% of agent-listed homes sold, against 65.1% of private listings (Cotality data via RNZ, 15 July 2025). Agents earn a real part of their fee on completion and speed. The buyable preparation priced in the table is how private sellers close most of that gap.

So is a real estate commission worth it in NZ?

For some sellers, yes. If you’re short of time, selling from another city, or dealing with a complicated property, a professional running the whole campaign has real value, and nothing in the table says an agent’s work is worthless. What the itemised view changes is the question you’re answering. On a median home, the buyable parts of the service cost a few thousand dollars at market rates, while the commission runs $26,450 to $30,590 with GST included. The difference pays for coordination, accountability, and a negotiation advantage the best available evidence can’t find in the final price. In a market that eased 0.7% over the past year (REINZ, July 2026), that difference is the biggest cost you control in the entire sale.

Celby was built on that arithmetic. Our flat fee is $8,000 including GST, and it covers the buyable lines done properly: professional photography, your Trade Me listing, a conveyancing lawyer, signage, and a process that tells you what to do when an offer arrives. The negotiation stays yours, which the evidence suggests is no handicap. So does the difference.

Celby is not a licensed real estate agent. You’re selling your property privately, and all decisions about your sale are your own.

Sources

1. Barfoot & Thompson commission rates (checked July 2026)
2. REINZ July 2026 market data
3. RNZ / Cotality — Is it worth paying a real estate agent to sell your house? (15 July 2025)
4. Trade Me Property fees (fetched 13 July 2026)
5. Photography market rates, July 2026: Property Profile, Bashco, The Way Home
6. Cost of selling a house in NZ 2026 — Leanne Stewart, Harcourts (marketing, staging)
7. Property lawyer costs — LawyerFinder
8. Agency admin fees comparison — patmat.co.nz
9. Bernheim & Meer, NBER w13796 · Hendel, Nevo & Ortalo-Magné, NBER w13360
10. Real Estate Agents Act 2008, s4