Structural engineering,
permits, and assessments across Ontario.

An engineering letter is a signed and stamped document from a Professional Engineer, addressed to a specific recipient such as a city, lender, insurance carrier, or buyer's lawyer. The letter confirms a specific structural fact within the engineer's professional opinion. Common examples include confirming that a basement modification is structurally adequate, that a previous repair was completed properly, or that an existing roof framing system can carry the loads in question.

Kernel Engineering Canada Inc. holds a Certificate of Authorization from Professional Engineers Ontario, the practice authorization required to offer engineering services in the province. The firm also carries professional liability insurance and commercial general liability insurance at the levels required for site attendance and inspections.

The engineering and drawing work usually takes one to three weeks after the site visit. City review time varies by municipality and project type:

• House additions and basements: 2 to 6 weeks in Toronto, 2 to 4 weeks in Mississauga and Brampton
• Two-unit suites and basement legalizations: 3 to 8 weeks depending on the city's current queue
• Commercial Part 3 work: 6 to 12 weeks is typical

The Ontario Building Code prescribes initial review periods (10 business days for Part 9 housing) but real timelines depend on the city's workload. Each file is tracked and followed up directly with the plans examiner.

Drawings can only be stamped after a full engineering review of the design. The Professional Engineers Act limits stamping to work the engineer has personally directed or verified. In practice, if the existing drawings are sound and complete, the review is brief. If they are incomplete or non-compliant, redrawing them is usually the faster path. Either way, the scope is confirmed in writing before any review work begins.

Yes. Coordination with contractors, framers, drafters, architects, home inspectors, and insurance adjusters is part of most projects. The engineer also corresponds directly with the city's plans examiner where required. Bringing the other parties into the conversation early helps the file move without duplicated questions or conflicting instructions.

Cost depends on the scope. A short engineering letter, a basement legalization, and a custom-home design are very different pieces of work. After the first conversation a written quote is issued that lists what is included, the timeline, the fee, and any optional extras. Quotes are typically valid for 30 days. Additional fees only arise where the scope changes — see the FAQ entry below on changes for what counts as a scope change versus a minor revision, and the terms for the full definitions.

The practice is based in Mississauga and the majority of projects sit inside the Greater Toronto Area. Projects elsewhere in Ontario are accepted case-by-case. Send the property address and a description of the scope, and we will confirm whether travel and the project make sense to take on within your timeline.

Yes. Most home inspection reports list structural items as "consult a Professional Engineer." We attend the property, review the item, and write either a short letter confirming there is nothing to worry about or a written report with a repair scope. The output is meant to be used directly in the buyer-side or seller-side conversation, and it is usually turned around inside a week.

The default issue is a sealed PDF, which is what the city receives. DWG and RVT exchange is available on request for designers, contractors, and trades who need the working files. Tell us what software your team uses and we will issue accordingly.

A written change order is issued before any new work begins. A change order describes the additional scope, the additional fee, and any impact on the timeline, and it is not actioned until you confirm by email.

Some things stay inside the original fee and do not trigger a change order: dimension clarifications, call-out additions on issued drawings, up to two rounds of small markup-style revisions per sheet, and plans-examiner responses that fall within the original code analysis.

Some things do trigger a change order: relocating walls, beams, or columns after issuance; changing the footprint, ceiling heights, or opening sizes; switching structural material; adding a storey or addition; city-driven requirements outside the original code analysis; or re-design after construction has started. The complete definitions, along with how discovered hidden conditions are handled, are in the terms, section 3.

No engineer can guarantee that a municipality will issue a permit, grant a variance, or accept a heritage or conservation request. What we do guarantee is that the package will be assembled to the requirements of the Ontario Building Code, the applicable CSA standards, and the documented submission policies of the city at the time of filing, and that plans-examiner comments inside the original code analysis are answered as part of the quoted fee. The terms cover this in section 7.

Letters and structural reports are addressed to a named recipient — for example, a specific homeowner, lender, insurer, buyer's lawyer, or municipality. The letter is prepared for that recipient's use and that use case. Other parties may not rely on the letter without written authorization. This is how engineering reliance works in Ontario and is the standard the firm operates to.

Site visits inside the GTA core (Mississauga, Toronto, Brampton, Oakville, Vaughan, Markham) are usually available within the same week. Urgent visits for insurance claims, closing-condition deadlines, or active permit reviews are accommodated when scheduling allows. Let us know the deadline up front so we can plan around it.