Section 01
Five systems, five different record holders
The drainage service line is shared: EPCOR publishes a division in which the property owner maintains and repairs the sewer line on the property while EPCOR's responsibility runs from the property line to the main. The electrical service and the heating and ventilating plant sit with the City's residential permit and inspection files. Radon is not a records question at all until someone has measured the dwelling to the federal protocol. Suspected hazardous building materials are answered by qualified sampling, with a separate provincial notification framework governing defined abatement work.
Owners routinely treat these as one topic called 'the systems' and then find that no single office can answer them. Splitting them into five named enquiries, each addressed to the body that actually holds the answer, converts a vague anxiety into five short, dated, answerable requests.
Section 02
What a permit record is, and what it is not
A permit record establishes that an application was made, that a defined process was engaged, and that inspections were requested and recorded at stated stages. Where a record shows a final inspection, it shows that the inspection occurred and what it recorded. That is a genuinely valuable fact and it is the backbone of a handover file.
It is not proof of workmanship, present condition, or capacity for a use you intend. The City describes its residential inspections as a point-in-time audit against minimum safety standards and states that they differ from third-party home inspections. A permit is therefore evidence about process, and the condition question stays open until a qualified trade or professional examines the installation itself.
A permit record and a condition assessment answer different questions. Neither substitutes for the other.
Section 03
Reading an absence honestly
The City's search of records examines defined files and gives no guarantee that a record exists; it states it holds no residential building plans before 1985 and does not release Real Property Reports or legal surveys because it does not hold the copyright. Files are also lost, mislabelled and archived under previous addresses.
So an empty result is a gap in the record, not a finding about the work. The correct response is to widen the request, ask the seller in writing what they know, and where the item matters, have the installation examined by a qualified person. Treating silence as either reassurance or accusation is the single most common error in this part of due diligence.
Section 04
The order to work in before an offer becomes firm
Start with what is cheap, fast and documentary: the permit history for electrical, heating and ventilating and general improvement work, the seller's own equipment inventory and service records, and any warranty or trade documentation the owner holds. Those arrive quickly and shape every later question.
Then commission what takes time. A long-term radon measurement follows a federal protocol measured in months, so it belongs on the ownership calendar rather than inside a short condition period. A drainage service line inspection, an electrical service assessment and any sampling of suspected materials are booked with qualified people and scheduled around access. Knowing which items are slow is what keeps a condition period realistic.
Section 05
The handover file a distinctive house should carry
For each of the five systems, the file should hold: the record itself with its date, who produced it, what it covers, and a plain sentence stating what it does not cover. Add the equipment inventory with model and serial identification, the service log, any camera inspection footage and report, any measurement report with its start and end dates, and any professional report with its scope and limitations page intact.
Assembled this way, the file is useful twice. It shortens every future service call and insurance conversation for the owner, and at sale it converts what a buyer would otherwise price as uncertainty into a documented history. Both benefits require the file to be built during quiet ownership rather than during a negotiation.
Section 06
Where the record stops and a professional starts
Condition of a buried service line is resolved by a camera inspection performed by a qualified drainage contractor. Electrical service capacity and panel condition are resolved by a licensed electrical contractor, and a permitted alteration is inspected by the authority having jurisdiction. Heating and ventilation performance is resolved by a qualified mechanical contractor who can measure what a permit never recorded.
Radon is resolved only by measurement to the federal protocol, and any question about the presence of hazardous material in a building assembly is resolved by qualified testing and advice, never by inspection of age or appearance. This atlas is editorial reference material: it does not diagnose a house, interpret a measurement, or give legal, engineering, insurance or medical advice.
Every unresolved item on this page ends with a named professional, not with a conclusion drawn here.