A good brief is short, factual and earlier than you think. The inspector does not need your life story, your maximum bid, or a theory about the vendor. They need to get into the house, onto the roof if that is safe, under the floor if there is one, and they need to know which particular stain you are already losing sleep over.
Most of the quality in a pre-purchase inspection is decided before anyone opens a ladder. Access is either arranged or it is not. The agreement is either read or it is not. The extra services you might actually need — a moisture meter used properly, a camera on a pole, a second visit for a locked roof space — are either priced and scoped or they become a surprise on the invoice. Briefing is the unglamorous half of choosing a building inspector. The other half is competence. Neither half works if the laundry is full of dog and the manhole is under a wardrobe.
This is not a script for getting a softer report. It is a working method for getting a more accurate one. If you want the house to “pass”, you are in the wrong process.
Access, keys, and the person who is home
The inspector cannot inspect what they cannot reach. That sentence should be printed on every agency door. In practice, access is a chain of other people’s habits. The selling agent holds a key, or does not. The vendor is home, or is “just finishing a phone call” in the room you need. Tenants have a right to notice and a right not to have their afternoon destroyed. None of that is the inspector’s fault. All of it becomes the inspector’s limitation if you do not deal with it first.
Write down, in the booking, who will let them in. If the property is tenanted, ask the agent to confirm the inspection window in writing. If it is vacant, ask who has the alarm code. If it is a battleaxe block, say so. If the only manhole is in a locked wardrobe, say that too. These are not fussy details. They are the difference between a roof-space sentence and a roof-space inspection.
Keys that live in a lockbox are fine until they are not. Dead batteries, the wrong code, a box that the last tradesperson moved, are common enough to be boring and still common enough to waste the visit. If you are the buyer, you cannot fix a lockbox from another suburb. You can ask the agent, the day before, to confirm that the key works. It is a small, unromantic email. Send it.
Vendors, pets, and occupancy
A vendor who stays for the inspection is not automatically a problem. A vendor who narrates is. Some owners are helpful: they will move the car, open the side gate, and show you the crack they already know about. Some will follow the inspector from room to room explaining that the stain is “just old” and that the last plumber was a family friend. The inspector will be polite. The inspection will be worse.
Ask, if you can, that pets be contained. A dog that is friendly to the agent is not always friendly to a stranger with a torch. A cat that vanishes into the roof space is a delay. Stock on a rural block is a safety issue, not a charm issue. None of this needs to be hostile. It needs to be arranged.
Occupancy changes what can be seen. Furniture against walls, clothes in cupboards, a home office that cannot be disturbed, stored boxes in the subfloor — these are normal, and they are also concealment. The standard expects the inspector to say so. Your job is not to empty the house. It is to avoid pretending that an occupied house is a vacant one. If a particular room matters to you, ask that it be made visible. That is a reasonable request. Asking that the vendor’s life be packed into the garage for your convenience is not.
Ask about the thing you already know
Every buyer has one. A crack above the lounge door. A yellow circle on a bedroom ceiling. A musty smell in the built-in. A roof that looks tired from the street. Put it in the brief, in one sentence, with a photograph if you have one from the open home.
You are not telling the inspector how to do the job. You are telling them where your attention is, so that the report does not treat your actual question as a general remark about age. AS 4349.1 already requires them to look at the accessible building. It does not require them to read your mind.
Be specific. “We’re worried about the roof” is weaker than “the rear valley above the kitchen has staining on the ceiling, and we want to know whether that is active”. “Is the house structurally sound?” is not a brief. It is a wish. Structural soundness, as a phrase, does more harm in this industry than most defects.
If you have the contract, send the special conditions. If there is a building clause with a dollar threshold, the inspector should know that the threshold exists. They should not write the report to the threshold. Those are different instructions. The first is context. The second is a request to fudge.
Paying extra, and what the extra actually is
The base inspection is a visual look at readily accessible areas. Plenty of useful work sits just outside that sentence, and plenty of marketing language pretends it does not.
Roof interior is not always an extra, but safe access to a low or packed roof space sometimes is. If the inspector will need a second person, a different ladder, or a return visit, that should be said up front. Elevated cameras and poles are now ordinary on two-storey houses and on roofs nobody should walk. They are not magic. They see what the lens can see. They do not replace a walk on a safe roof, and they do not see through tiles.
Moisture mapping is a phrase that covers everything from a competent use of a meter at a wet-area junction to a theatrical parade of coloured screens. Ask what they will do, and what they will not claim. A meter reading is not a diagnosis of a leaking shower tray. It is a reason to look harder, or to send a tiler.
A sewer camera is a plumber. It is not a building inspector with a dearer invoice. If you want the drains seen, book a licensed plumber who does that work, and give them the same access notes. The building report and the drain report will not be one document. They should not be. The standards and reports problem here is scope creep: one person cannot honestly hold every licence the house might need.
Drone footage, thermal cameras and “360 walkthroughs” are optional tools. Some inspectors use them well. Some use them as a substitute for getting dirty. Brief for the finding you need, not for the gadget you saw in an advertisement.
Attend, but do not direct the play
Attending the inspection is the single most useful thing a buyer can do, provided they can be quiet. You will learn which cupboards were full, which gates were locked, and whether the inspector actually went into the roof. You will be able to point at the crack. You will also hear, in real time, the difference between a person thinking and a person performing.
Do not live-stream it to a group chat. Do not ask for a running commentary that will later contradict the written report. Do not invite the agent to stand in the hallway and joke about inspectors who “always find something”. The report is the work product. Conversation is perishable, and it is a gift to anyone who would like to misremember it.
If you cannot attend, appoint someone who can take instructions and not give them. A parent who wants you to buy the house is a poor substitute. A friend who builds for a living can be a good one, if they understand they are not the inspector.
What not to do
Do not instruct them to make it pass. The sentence comes out of people’s mouths more often than they admit, usually dressed as humour. It is a request for a dishonest report. A decent inspector will ignore it. A less decent one may remember, later, that you asked.
Do not hide information you already have. If last year’s pest report found activity, say so. If the vendor mentioned a repaired leak, say so. The inspector is not a prosecutor, and you are not improving your position by testing whether they can find a problem you have already been told about. You are wasting the hour.
Do not shop for a second inspector solely because the first one was gloomy, unless you have a reason to think they were incompetent. A second opinion is legitimate when the first report is thin, internally contradictory, or outside the author’s depth. It is not legitimate as a search for a prettier PDF. Missed defects cut in both directions. Soft reports miss things too.
Do not treat the inspector as a negotiator. They can describe a defect. They cannot tell you what the vendor will accept. If you want a cost range, ask whether they will give one, and understand that a range in a visual report is not a quote.
Pre-auction time is not private-treaty time
Auctions compress everything. There is no building clause in the usual sense, no cooling-off in some states, and a crowd that would like you to feel late. The brief, in that setting, is also a timetable. Inspect early enough to read the report twice. Early enough to get a plumber or an engineer if the first document requires one. Early enough to decide that you will not bid, which is a decision the process is designed to make uncomfortable.
Private treaty looks calmer and is often just as rushed. A 24-hour “first right” is not a due-diligence window. A building clause that expires on Friday is only useful if the inspector has already been through the house. Apartments and townhouses add strata documents to the same clock. The lot inspection is not the building. The building is not the lot. Brief for both, or admit you have only done one.
In either market, tell the inspector the date that actually matters: auction day, or the day your clause expires. They cannot invent time. They can tell you, honestly, whether the booking you want is a real inspection or a gesture.
The inspector’s job is to see the house you are about to buy. Your job is to get them into it, and then to let them write. Everything else is noise.
If you do those two things — access and silence — the rest of the brief can be a paragraph. Address. Particular concerns. Contract dates. Whether you want the extras that are actually extras. The climate of the place, if it is flood, fire or cyclone country, belongs in that paragraph too, because the inspector will only spend a moment on the landscape unless you have asked them to look. This is not legal advice, and it will not make a bad house good. It will make the report you paid for look more like the house you were shown, which is the modest aim of the whole exercise.
