Overview
Six windows, in the order they occur, and the order is the argument. Each opens, allows a particular set of things, and closes — and when it closes, some options close permanently rather than becoming more expensive. Grouping the sixteen occasions by when they happen shows that better than grouping them by who commissions them, because the most consequential decision in the whole subject is timing.
Stated once, plainly, because the rest of this page elaborates on it: find out early. Not because early findings are different findings, but because early findings arrive attached to a remedy and late ones arrive attached to nothing.
Before you offer
Everything is still possible here and nothing is owed to you. You can learn as much about a house as any inspection will ever tell you, and you can walk away for free. What you do not have is an access paragraph obliging the seller to open the door or turn the utilities on, a deadline protecting you, or any remedy attached to what you find. This is where the pre-offer inspection, the decision about a house sold as-is, and foreclosure and auction purchases sit. Two of those three are shaped by the same hard fact: the examination is paid for once per attempt rather than once per purchase, and at an auction there is usually no examination to buy at all.
Under contract
This is the only window in which access and remedy exist at the same time, and that combination is what makes it the ordinary moment for an inspection rather than a matter of custom. The contract obliges the seller to permit access; the contingency or option period gives you the right to reprice, demand repairs or terminate. Both have a deadline, no state located in this research sets it for you, and it is typically shorter than the work requires — the most common scheduling failure on the purchase side. The buyer's inspection, buying a property to rent out, buying a renovated or flipped house and inspecting a condominium unit all live here. What closes at the end of this window is not the ability to inspect. It is the ability to do anything about it.
Before closing
Access remains, and almost nothing else does. The new-build pre-closing inspection is the last moment at which a defect is a builder correction rather than a warranty claim, and the difference between those two words is the difference between a trade returning to the site and a homeowner writing a notice within a period they did not set. The final walk-through sits at the very end and is not an inspection: no inspector, no standard of practice, no report. It compares the house to paper — agreed repairs, contracted condition, items that were supposed to convey. Within those limits it catches real things, particularly systems the sellers switched off and damage the move-out caused. Outside them it catches nothing, because nobody is obliged to find anything.
While it is being built
This window is a detour rather than a stage, and it belongs to new construction. It is not on the calendar at all; it is on the build, and it is the only group on this site whose scheduling is driven by a superintendent rather than by a contract date. Phase inspections during construction run pre-pour, pre-drywall and final, and the pre-drywall window can be a few days wide between the rough-in approvals and the insulation crew. What is possible here is simply observation: reinforcement in a trench, the frame with its wiring and piping exposed, flashings and the weather-resistive barrier all visible at once. What closes is the observation itself. Afterward, nothing anyone writes about those items is an observation — it is an inference drawn from symptoms upstairs, and every standard of practice in the field excludes concealed conditions.
The cost of missing it compounds in three steps. Before drywall, a correction is a correction. After drywall, the same item is three jobs and a dispute about who pays for the finish work. After closing, it is no longer a correction at all but a claim, made against a builder, about something nobody can see.
After you own it
Four occasions, and every deadline in this group belongs to somebody else. The 11-month builder warranty inspection runs against the expiry of the broadest coverage a new house will ever carry. Move-in and move-out inspections run against a state deposit statute and the periods it attaches. The four-point insurance inspection runs against an underwriting decision that will be made in minutes by someone who never sees the property. Only the annual maintenance inspection has no external clock, which is exactly why it is the one most often skipped — and why its case has to be made on its own merits rather than on a rule.
What is still possible here is prevention and documentation. What has closed is the purchase. Nothing commissioned in this window changes the price you paid or restores a contingency, and an inspection ordered now that would have been useful eighteen months ago is a maintenance document rather than a negotiating one. That is not a reason to skip it. It is a reason to be clear about which it is.
Before you sell
The last window is the only one the owner chooses. The pre-listing inspection and the inspection of an inherited property are both commissioned with no deadline, no counterparty and no right of termination anywhere. Everything about that position is favorable except one thing: what the report finds becomes something you know, and knowledge is what a disclosure duty attaches to. The window is also narrower than it looks, because its value lives entirely in the interval between the report arriving and the listing going live. A pre-listing inspection delivered the week you go on the market has lost most of what it was bought for, and one commissioned after an offer is accepted has lost all of it — the obligations arrive without the timing advantage that was the whole point.
Reading the sequence as a whole
Each window is defined less by what it allows than by what the previous one has already spent. Before an offer, every option and no protection. Under contract, briefly both. Before closing, access and little else. During construction, a view that will not come back. After you own it, deadlines set by other parties. Before you sell, control and a disclosure consequence.
The practical instruction that falls out of all six is the same one: establish the deadline before you book anything, and work backward from it. In a purchase the deadline is a contract term rather than a statutory right. On a new build it is the warranty date, which is not necessarily your closing or move-in date. In a tenancy it is a statute you should read this year rather than last year. In an insurance file it is whatever the carrier's own rules say, which are frequently not published and should be requested in writing. Every page on this site names its clock, because the clock, far more often than the inspection, is what decides the outcome.
The six windows, and what each one can still do
Before you offer — 3 occasions
This window is for learning before you are bound. You can inspect as thoroughly here as at any later point, and you can walk away at no cost, which makes the best outcome of a pre-offer inspection the offer you never write. What it cannot do is give you any remedy. There is no access paragraph obliging the seller to open the door or turn the utilities on, no deadline protecting you, and nothing to act on if the report is bad except the decision not to proceed. It is also paid for once per attempt rather than once per purchase, so in a competitive market the arithmetic has to be done before the first booking rather than after the third.
Under contract — 4 occasions
This is the ordinary window, and it is the only one in which access and remedy exist together. The contract obliges the seller to permit entry; the contingency or option period gives the findings somewhere to go — a repricing, a repair demand, or a termination with the deposit intact. What this window cannot do is extend itself. No state located in this research sets its length, the parties negotiate it, and it is routinely shorter than a general inspection plus a sewer scope plus a specialist callback actually takes. It also cannot reach what the standards exclude by rule: concealed conditions, latent defects, remaining useful life, code compliance and the cost of repairs.
Before closing — 2 occasions
The last look, and a narrow one. On a new build this is the final moment at which a defect is a builder correction rather than a warranty claim — the same item, before and after a line that moves it from a trade returning to the site to a homeowner filing a notice. On a resale, the final walk-through confirms that agreed repairs exist, that the property is in the condition contracted for, and that nothing conveying has been removed. What this window cannot do is restore a lapsed contingency or substitute for the inspection that should have happened weeks earlier. Realistic outcomes here are a delayed closing, an escrow holdback or a credit, and the seller may decline all three.
While it is being built — 1 occasions
This window is set by the build rather than the calendar, and it exists because each stage of construction covers up the one before it. Pre-pour, pre-drywall and final each look at work that will shortly be permanently invisible, and the pre-drywall opening can be a few days wide between the rough-in approvals and the insulation crew. Its value is the observation itself, and the photographs are worth as much as the findings. What it cannot do is produce a code opinion, which belongs to the building department, or a structural opinion, which belongs to an engineer. It also cannot happen later: after the walls close, nothing written about what is behind them is an observation.
After you own it — 4 occasions
Four occasions, and in three of them the clock belongs to somebody else — a warranty tier that closes on an anniversary, a deposit statute with a return deadline, an underwriter who will not write the policy without a form. The fourth, the annual maintenance inspection, has no external clock at all, which is precisely why it is the one most often skipped and the one whose case has to be argued rather than cited. What this window can do is prevent, document and satisfy a requirement. What it cannot do is change the purchase. Nothing commissioned here restores a contingency or revisits a price, so an inspection ordered now is a maintenance document rather than a negotiating one.
Before you sell — 2 occasions
The one window the owner controls. There is no deadline, no counterparty and nobody holding a right to terminate, so a finding can be repaired at retail with three bids rather than conceded under a clock nine days before closing. That is the whole argument for the pre-listing inspection, and for inspecting an inherited property before the inventory and the listing. What this window cannot do is stop the buyer commissioning their own inspection, whose report will not match yours item for item. Nor can it be undone: the report does not create defects, it creates your knowledge of them, and a disclosure duty attaches to what a seller knows.