In most mid sized marketing teams here, the money for SEO was taken from somewhere else, and that somewhere else was usually paid search. This matters more than anyone admits during a pitch, because it means the two channels are not neutral colleagues. They are competing for the same budget, frequently reporting to the same person, and sometimes bidding on the same words. Buying well starts with understanding that relationship rather than pretending it does not exist.
Sydney SEO budgets are usually carved out of a paid search line
The consequence is that your organic programme will be judged against a channel that reports results within days, attributes them confidently, and can be switched off if the quarter goes badly. Organic work does none of those things. It takes a quarter or more to show anything, its attribution is messier, and its value accrues slowly.
Say that out loud before you sign, and agree a review horizon that matches the work rather than the habits of the team next door. A supplier who accepts a monthly performance comparison against paid media is either inexperienced or planning to show you visibility charts instead of outcomes.
Brand terms are where the two channels quietly fight
Almost every account in this market is buying its own brand name in paid search, and almost nobody has tested whether it is necessary. Sometimes it clearly is, because a competitor is bidding on you or a reseller is outranking you. Sometimes it is a large monthly payment for clicks you were going to receive anyway from the organic result directly beneath.
The test is cheap and almost never run: pause brand bidding in a controlled way, in one region or on one set of terms, and measure total enquiries rather than channel enquiries. Ask a prospective SEO agency whether they would recommend that test. Their answer tells you whether they think in channels or in customers, and it is one of the better qualification questions available.
Incrementality questions a good SEO agency should welcome
The uncomfortable version of the same problem runs the other way. If a phrase is producing enquiries through paid placement and you then win the organic position for it, some of that traffic moves rather than adds. The total may barely change while both channels report success.
You do not need a research department to handle this. You need one shared view where the same enquiry cannot be counted twice, and a habit of asking what the total did rather than what each channel claims. Any agency that becomes uncomfortable at this question is telling you how it intends to be measured.
One supplier for both channels, or two specialists
A shop selling both SEO and paid media makes coordination easy and the incentives awkward, because the same firm advises on how to split a budget it earns from either way. Two specialists give you sharper work and a coordination problem that lands on your desk, plus a tendency for each to blame the other when results are flat.
Neither is right in general. What matters is who arbitrates. If you go with two, you need someone internally who owns the total number and can overrule both. If you go with one, ask how the fee changes when the budget moves between channels, and get the answer in writing. A percentage of media spend is the model to scrutinise hardest, because it gives the agency a standing reason to prefer the channel that spends.
Fee structure when the same team advises on spend
Ask for the fee to be stated separately from media, and for the fee itself to be split into direction, production and running the work. Ask what happens commercially if SEO performance improves so much that paid spend can be cut. If the honest answer is that the agency earns less, you have found a conflict worth managing, and the fix is usually a flat retainer rather than a percentage.
Rates in this city are the highest in the country, so ask the unglamorous question too: how many hours does this buy, and who is doing them. If running that comparison across several firms is the part you would rather not manage, put the requirement out once and ask for answers in a fixed shape.
A shared measure that stops both channels claiming the same sale
Agree one primary number owned by the whole marketing function, defined in your own terms rather than a platform's, with a rule for how a customer who touched both channels is counted. Then report cost per qualified enquiry at the total level first and by channel second. Reversing that order is how teams end up optimising two dashboards and shrinking one business.
Keep position data and impression share in the pack as diagnostics. They are useful for understanding what happened. They are not the score, and an SEO report that leads with them is avoiding the conversation.
On the practical side, the analytics property, the search console, the tag container, the advertising accounts, the content system and the domain must all sit in accounts your business owns, with agencies granted access. That is doubly important when two suppliers are involved, because shared infrastructure held by one of them turns a routine change of vendor into a negotiation. For the wider picture of how these firms are structured, start from the overview of SEO agencies, and if you are weighing a combined arrangement, compare against firms that run both channels together or communications teams that earn coverage instead. If your market extends beyond this city, look at agencies in the southern capital or firms further up the coast.