"How long will it take?" is often the first question a buyer asks the inspector on the phone. The correct answer, before getting into specifics: the time needed to meet the requirements of the BNQ 3009-500 standard. No more, no less.
Article 5.4 of the standard states the obligation in one sentence: "The building inspector must devote the time necessary to implement and comply with the requirements of this standard." That apparent simplicity hides a powerful rule — a too-fast inspection is not compliant.
Why the standard doesn't set a minimum duration
BNQ 3009-500 could have written "the inspection must last at least 3 hours." It didn't, for a specific reason: the time needed varies with the building. Inspecting a new 700 sq ft condo and a century-old 3,500 sq ft triplex don't require the same workload. Setting a minimum would either be unsuited to small buildings or insufficient for large ones.
The obligation is therefore functional: time spent must be enough for the requirements of the other articles — close examination (7.2), gathering objective evidence (7.1), appliance operation assessment (7.3), documenting findings (chapter 8) — to be genuinely met.
Realistic durations in Quebec
The ranges below are what experienced Quebec inspectors observe. They vary with building condition, system complexity, and access:
Condo or private unit in divided co-ownership
- New condo, < 1,000 sq ft: 1.5 to 2.5 hours on site
- Older or complex condo, 1,000–1,800 sq ft: 2 to 3 hours on site
- Plus 1 to 2 hours if the inspection includes common areas
Single-family home
- Newer bungalow, 1,200–1,500 sq ft: 2.5 to 3.5 hours
- Two-storey home, 1,800–2,500 sq ft: 3 to 4.5 hours
- Older home (pre-1970), multiple additions, unfinished basement: 4 to 6 hours
- Large property with detached garage, pool, outbuildings: 5 to 7 hours
Multi-unit Category 1 (2 to 6 units)
- Duplex: 3 to 5 hours
- Triplex: 4 to 6 hours
- Four- to six-plex: 5 to 8 hours, depending on unit access
Category 2 building (7 units and up)
For these buildings, the inspection also relies on the supplementary information required by Annex D of the standard (fire safety, sprinklers, elevators, ventilation systems). Typical duration runs 6 to 15 hours depending on unit count and complexity.
Important: these durations are time on site. Report writing averages as much or more — 3 to 5 hours for a condo, 5 to 8 hours for a full home. BNQ 3009-500 requires a descriptive report (article 9.1), which doesn't happen in 30 minutes.
Why a too-fast inspection is a red flag
If an inspector offers 45 minutes on site for a two-storey home, something is off. The standard's articles (chapter 7 on means of inspection, chapter 12 on the 8 systems to cover) cannot realistically be satisfied in that window. The result is usually a summary report that doesn't meet article 9 on form and content, and an incomplete file under chapter 10.
For a buyer, the watch-out: a suspiciously low price often comes with a suspiciously short inspection. Pre-purchase inspection isn't where you save a few dollars if that translates into a report that misses an apparent defect or a safety risk.
What the requester can reasonably ask for
Before booking the inspection, a buyer can ask:
- How much on-site time does the inspector plan? A specific estimate for the building in question is a good sign.
- How long for report writing? A report delivered within 24–48 hours of the inspection is typical. A report in 2 hours is suspect.
- How many photos are typically included? No magic number, but around 50 photos for a single-family home is a reasonable order of magnitude.
How Axiom³ supports the necessary time
The Axiom³ report editor lets the inspector accumulate objective evidence in the field — photos, notes, measurements — without wasting time on manual file organization. Report writing becomes faster because the BNQ 3009-500 structure is already in place: the inspector fills in rather than rebuilding. Result: the inspector can spend more time on the building and less on paperwork.
Try Axiom³ for free — 10 inspections, no credit card.
Common questions
Does the standard explicitly ban an "express" inspection?
Not through a duration rule. But an inspection that doesn't allow compliance with the other articles (close examination, evidence gathering, documentation) is not compliant — article 5.4 requires devoting the necessary time.
Does the inspector have to be alone the entire time?
No. The requester, seller, and authorized representatives can attend (article 5.5). They don't count toward "inspection time" — the inspector must still do the job in the time needed.
Does more hours always mean a better inspection?
Not necessarily. An efficient inspector with a well-structured tool can be more productive than a less organized one spending more hours. What counts: that every component is actually examined and documented.
Is the report part of the "time devoted"?
Yes. Article 5.4 refers to all the time needed to implement the standard's requirements, which includes report writing (chapter 9) and building the file (chapter 10).
Sources & references
- BNQ 3009-500 — Residential Building (articles 5.4, 7, 9, chapter 10, Annex D): bnq.qc.ca
- REIBH (B-1.1, r. 3.1): LégisQuébec
- QuebecProprio — 2026 pre-purchase inspection pricing: quebecproprio.ca
Last verified: April 22, 2026. Durations given are typical ranges; every building differs.