Kieffer Structural Engineering

Kieffer Structural Engineering operates as a firm of engineers and technology consultants in Toronto, Ontario, part of the city's dense network of professionals who turn architectural drawings into buildings that actually stand. For homeowners and developers alike, a structural engineering firm is the professional who confirms whether a wall can come down, whether a foundation needs underpinning, or whether a rooftop addition will hold. This kind of work is rarely glamorous and almost never optional — it is the technical due diligence that stands between a renovation idea and a building permit.

What a structural engineering firm does day to day

From site visit to stamped drawings

A structural engineering firm's core job is to assess loads, materials, and code compliance, then produce the stamped drawings a municipality requires before issuing a permit. In practice that means a mix of desk work — calculations, drafting, code review — and field work, where an engineer visits a site to inspect existing conditions before signing off on a design.

Most projects follow a similar arc. A client calls with a project in mind: an addition, a structural repair, a change of use for a commercial space, or a new build. The firm reviews the scope, often asks for existing drawings or a site visit, and scopes out the engineering deliverables needed — anything from a single-page letter confirming a beam size to a full set of structural drawings for a multi-storey building. Toronto's older housing stock, especially in neighbourhoods full of early-20th-century semis and duplexes, tends to generate a steady stream of this kind of work: buyers renovating a century home want to know if a load-bearing wall can be opened up, and permit offices want an engineer's stamp before they'll approve it.

Services typically offered

Engineering support across residential, commercial, and civil projects

Firms in this category generally offer a range of structural and civil engineering services suited to Toronto's mixed building stock — from century homes to mid-rise infill.

• Structural assessments and inspections of existing buildings, including foundations, framing, and load-bearing elements
• Structural design for new construction, additions, and renovations, including calculations and stamped drawings for permit submission
• Underpinning and foundation engineering for basement lowering or waterfront and soil-sensitive sites
• Renovation support, such as confirming whether interior walls can be removed or altered
• Civil engineering input on grading, drainage, and site servicing where a project touches municipal infrastructure
• Consulting reports for real estate transactions, insurance claims, or due diligence ahead of a purchase

Not every firm offers every item on that list, and the exact scope of what Kieffer Structural Engineering provides is best confirmed directly with the firm before a project begins.

Typical hours, budget, and how a visit unfolds

Engineering consultations run on business hours and start with a scoping conversation

Structural engineering firms generally operate on standard weekday business hours, since their work depends on coordinating with permit offices, contractors, and site access — most site visits and inspections happen during daylight hours on weekdays rather than evenings or weekends. Anyone planning to reach out should expect the first contact to be by phone or through the firm's website, since this kind of consulting work is rarely a walk-in service.

Budget for structural engineering work varies enormously depending on the scope of a project, and no firm can give a meaningful number without first understanding what's being built or repaired. A single consulting letter confirming a small structural change costs far less than a full stamped drawing package for a multi-unit addition, and underpinning or foundation work involves its own separate engineering scope. Prospective clients are best served by asking for a quote once they can describe the project — square footage, whether walls are load-bearing, whether the work touches the foundation — rather than expecting a flat rate. Various payment methods are typically accepted for invoiced consulting work, as is standard across the profession.

A first engineering visit typically follows a predictable sequence: an initial phone or email discussion to understand the scope, a site visit to inspect existing conditions and take measurements, then a period of calculation and drafting back at the office before drawings or a report are delivered. For permit-driven projects, timelines depend heavily on the complexity of the structure and the responsiveness of the client in providing existing plans or granting site access. Clients who come prepared with existing drawings, photos of the area in question, and a clear description of what they want to change tend to move through this process faster than those starting from scratch.

The city's building stock and permit system make engineering sign-off a near-constant requirement

Toronto's mix of century-old low-rise housing, mid-rise infill, and high-density new construction means structural engineering demand touches almost every kind of project. In older neighbourhoods with narrow lots and shared party walls, even modest renovations can require an engineer to confirm that changes won't compromise a neighbouring structure.

Seasonal patterns also shape the work. Spring and summer bring the bulk of construction activity, as contractors and homeowners try to get foundation work, additions, and structural repairs done before winter frost complicates excavation. Firms serving the Toronto market tend to see a rise in inquiries in late winter and early spring, as homeowners plan renovations and developers line up permits ahead of the busy building season. A firm located centrally, as Kieffer Structural Engineering is on Sherbourne Street, is well positioned to serve clients across the downtown core and surrounding neighbourhoods without long travel times for site visits.

Frequently asked questions

Do I need a structural engineer for a home renovation in Toronto?

Any renovation that involves removing or altering a load-bearing wall, modifying a foundation, or adding significant weight to a structure typically requires a structural engineer's stamped drawings before the City of Toronto will issue a permit. Smaller cosmetic renovations usually don't require this step, but it's worth checking with a firm directly if there's any doubt.

How long does a structural assessment take?

Timelines depend on the size and complexity of the project. A straightforward consulting letter for a single wall removal can be turned around relatively quickly, while a full structural design package for an addition or new build takes longer, since it involves calculations, drafting, and coordination with an architect or contractor.

What information should I bring to a first consultation?

Existing architectural or structural drawings, if available, along with photos of the area affected and a clear description of the intended changes, help a firm scope the project accurately and provide a more precise estimate.

Does a structural engineering firm handle the permit application itself?

Typically the firm provides the stamped drawings and supporting documentation needed for a permit, while the property owner or their contractor submits the application to the municipality. Some firms may offer additional support through the permit process, which is worth confirming directly.