One of the most common questions homeowners ask before starting a renovation is whether they need a building permit. The answer is: it depends on the scope of work.

Many bathroom renovations are cosmetic and can be completed without a permit. However, once you begin altering the structure of your home, changing plumbing locations, or modifying building systems, a permit may be required.

Bathroom renovations that typically do not require a permit

In many municipalities, you can usually complete cosmetic updates without obtaining a building permit. These may include:

• replacing a vanity in the same location

• installing a new toilet in the existing location

• replacing a bathtub with another bathtub of similar size

• updating faucets and plumbing fixtures without relocating plumbing

• installing new flooring

• painting

• replacing tile

• installing new cabinetry or shelving

• updating mirrors, lighting fixtures, or accessories (however, electrical work may still require a licensed electrical contractor where applicable)

While a building permit may not be required for these projects, the work should still be completed safely and in accordance with applicable guidelines.

Bathroom renovations that may require a permit

A permit is often required when the renovation affects the structure or building systems. Examples include:

• removing or adding walls

• enlarging or creating a new bathroom

• relocating plumbing fixtures such as the toilet, shower, or bathtub

• installing new plumbing where none previously existed

• altering structural framing

• creating new window or door openings

• converting another room into a bathroom

• adding heated floor systems or other work involving significant electrical changes

When should you involve a BCIN-qualified designer?

If your bathroom renovation involves structural changes, alterations to the layout, or requires a building permit, involving a BCIN-qualified designer early in the planning process can help prevent costly revisions later. A qualified designer understands the Ontario Building Code and can prepare permit drawings that meet municipal requirements while considering how the space will function day to day.

Even if your renovation doesn’t require a permit, thoughtful planning can improve storage, circulation, lighting, and the overall usability of the space - oftnen making a greater impact than simply replacing finishes.

Planning a bathroom renovation?

Whether you’re updating a single bathroom or reimagining your entire home, thoughtful planning makes all the difference. If you’re unsure where to start or whether your project requires a permit, LARK is here to help.

A kitchen renovation is one of the most exciting improvements you can make to your home - but it’s also one of the most complex. From planning and design to ordering materials and construction, the process often takes longer than expected.

Understanding the timeline before you begin can help you make informed decisions, reduce stress, and avoid costly delays.

While every project is different, here’s what a typical kitchen renovation looks like.

Planning & Design (2-8 weeks)

Every successful renovation starts long before the first cabinet is removed.

This is the stage where you’ll define your goals, establish a budget, and determine how you want your kitchen to function. You’ll also begin selecting finishes, appliances, lighting, plumbing fixtures, and cabinetry.

This is often the most important phase of the project because thoughtful planning helps prevent expensive changes once construction begins.

This phase involves:

• measuring the existing space

• exploring layout options

• developing a design concept

• selecting materials and finishes

• establishing a realistic budget

• finalizing appliance selections

Construction Drawings & Permits (2-6 weeks)

If your renovation involves removing walls, changing the layout, relocating plumbing, or making structural changes, permit drawings may be required.

Construction drawings communicate your design to both the municipality and your contractor, helping ensure everyone is working from the same plan.

Depending on your municipality, permit review times can vary, so it’s important to allow time for approvals before construction begins.

Ordering Materials (4-12+ weeks)

Many homeowners are surprised to learn that ordering materials can take longer than construction itself.

Custom cabinetry, specialty plumbing fixtures, appliances, windows, and certain finishes may have lead times ranging from several weeks to several months.

Whenever possible, materials should be ordered before demolition begins to minimize delays.

Demolition (3-7 days)

Once permits have been approved (if required) and materials are available, demolition can begin.

This usually includes removing:

• cabinets

• countertops

• flooring

• backsplash

• fixtures

• drywall where necessary

At this stage, it’s common for previously hidden issues such as outdated wiring, plumbing problems, or water damage, to be discovered.

While unexpected discoveries can affect the schedule, planning for a contingency helps keep the project moving forward.

Rough Construction (2-4 weeks)

With the space opened up, contractors complete the work hidden behind the finished surfaces.

This may include:

• framing

• plumbing

• electrical

• HVAC modifications

• insulation

• drywall repairs

Insepections are completed where required before work continues.

Installation (2-4 weeks)

Once the rough work is complete, the kitchen begins to take shape.

Installation typically includes:

• flooring

• cabinetry

• trim

• countertops

• tile backsplash

• plumbing fixtures

• lighting

• appliances

• painting

• final hardware

As each element is installed, the vision you’ve spent months planning finally comes together.

Final Details & Completion (1-2 weeks)

The final stage focuses on the finishing touches.

This may include:

• paint touch-ups

• adjusting cabinet doors and drawers

• installing accessories

• final inspections

• cleaning

• addressing of any remaining deficiencies

Before considering the project complete, take time to walk through the space with your contractor to ensure everything meets your expectations.

The bottom line…

From initial consultation to the finished kitchen, it’s not uncommon for the entire process to span 3 - 6 months, particularly for projects involving custom cabinetry or structural changes.

Many homeowners assume the fastest way to begin a renovation is to start demolition as soon as possible.

In reality, the opposite is often true.

Taking the time to finalize the layout, select the finishes, coordinate drawings, and order materials before construction begins can significantly reduce delays, change orders, and unexpected costs.

A well-planned renovation is almost always a smoother renovation.

Planning your kitchen renovation?

At LARK, we believe every successful renovation begins with thoughtful planning. Whether you’re updating finishes, reimagining your layout, or undertaking a complete renovation, we help homeowners develop functional designs, prepare permit drawings when required, and create spaces that work beautifully for everyday life. If you’re looking for a partner who can guide you through the technical details while creating a home that feels uniquely yours, LARK is here to help.

Adding onto your home can be a great way to gain the space you need without leaving a property or neighbourhood you already love. Whether you're considering a larger kitchen, a new primary suite, an extra storey, or additional living space, an addition can completely change how your home functions.

But before you start planning the perfect new space, there are a few important questions to answer first.

Start With What’s Possible

One of the most valuable steps in planning an addition happens before the design is fully developed: determining what can reasonably be built on your property.

In Ontario, an addition generally requires a building permit, and the proposed work must comply with both the Ontario Building Code and applicable municipal requirements. Local zoning bylaws can regulate things such as setbacks, building height, lot coverage and where an addition can be located on the property.

Depending on the property, there may also be additional considerations such as conservation authority requirements, septic systems, easements or other applicable approvals.

This is why a feasibility review can be so valuable early in the process. Identifying these requirements before investing heavily in a design can help avoid costly redesigns later.

Understand the Existing Home

An addition isn't designed in isolation—it has to work with the house that's already there.

Existing floor levels, rooflines, foundations, structure, windows and doors, mechanical systems, and circulation through the home can all influence the design.

Just as importantly, an addition should improve the way the existing home functions. Sometimes gaining more square footage creates an opportunity to rethink an awkward kitchen, improve circulation, bring in more natural light, or make better use of spaces that aren't working well now.

Carefully documenting and understanding the existing conditions provides the foundation for making those decisions.

Think Beyond Square Footage

It's easy to begin an addition by thinking, We need another 500 square feet.

But more space isn't necessarily better space.

Before determining how large an addition should be, consider what isn't working in your home now. Is the kitchen too small? Do you need another bedroom? Is there nowhere for coats and shoes to land? Does the main floor feel disconnected?

Good architectural design looks beyond simply adding rooms. The goal is to understand how the new and existing spaces can work together to create a home that functions better as a whole.

Establish a Realistic Budget Early

Construction costs can vary significantly depending on the size and complexity of the addition, site conditions, structural requirements, materials and level of finish.

Your budget should also account for more than the construction itself. Depending on the project, there may be costs for design and permit drawings, municipal fees, engineering, surveys, other consultants and interior finishes or furnishings.

Having an honest conversation about budget early allows the design to develop within realistic parameters rather than designing first and discovering later that the project is significantly beyond what you intended to spend.

Know That Other Professionals May Be Involved

Residential additions often require input from more than one professional.

Depending on the project, your design team may include a qualified architectural designer, structural engineer, surveyor, HVAC designer or other consultants. The exact requirements depend on the building, property and scope of work.

Identifying these needs early makes it easier to coordinate the design and understand the overall project requirements before permit submission.

Plan for the Building Permit

A building permit is generally required for an addition in Ontario. Permit drawings communicate the proposed construction and allow the municipality to review the project for compliance with the Ontario Building Code, zoning and other applicable requirements.

A typical drawing package will vary by project but may include existing and proposed floor plans, elevations, building sections, construction details, schedules and other supporting documentation.

Permit approval is an important milestone, but it shouldn't be the starting point of the design process. By the time drawings are submitted for permit, the major architectural decisions should already be carefully considered and resolved.

Give Yourself Enough Time

A home addition takes time to plan well.

Before construction can begin, there may be feasibility research, site measurements, design development, engineering and consultant coordination, permit drawings and municipal review. More complex properties may require additional approvals before a building permit can be issued.

Starting the design process well ahead of your desired construction date gives you time to make considered decisions instead of rushing through them simply to meet a construction deadline.

Start With the Right Questions

If you're considering an addition, you don't need to have everything figured out before speaking with a designer. In fact, determining what's possible should be one of the first steps.

At LARK Drafting & Design, our architectural process can begin with a Feasibility & Project Assessment to review your goals, property and applicable requirements before moving into architectural design. From there, services can be tailored to the needs of your project—from design development and permit drawings through permit coordination and construction support.

A successful addition isn't just about creating more space. It's about making sure the space you add works with your home, your property and the way you want to live.

If you're planning a renovation, addition, or new home in Ontario, figuring out who you need to hire can be surprisingly confusing. Do you need an architect? An engineer? A BCIN-qualified designer? And what exactly is the difference?

The answer depends on your project, the type and size of the building, and the work being proposed.

Here’s a simple overview of the different roles and where each may fit into a residential project.

What Is a BCIN Designer?

BCIN stands for Building Code Identification Number. In Ontario, certain designers who prepare drawings for building permit applications must meet qualification and registration requirements established by the province.

BCIN-qualified designers can provide design and permit-drawing services within the categories for which they are qualified.

For many houses and residential renovation projects, this means a qualified designer can develop the architectural design, prepare the required permit drawings, and help coordinate the application without the project necessarily requiring an architect.

The qualifications required depend on the type of building and scope of the proposed work, so it's important to work with a designer who holds the appropriate qualifications for your particular project.

When Might I Need an Architect?

Architects have extensive education, training, and professional licensing and can provide a broad range of architectural services.

However, hiring an architect isn't automatically required simply because you're renovating your home or building an addition.

Ontario legislation establishes circumstances where an architect is required, based on factors such as building use, size, and occupancy. Many typical houses and residential renovation projects fall within exemptions that allow appropriately qualified designers to prepare the design and permit documents instead.

For larger or more complex projects, an architect may be required or may simply be the most appropriate professional for the work.

What Does a Structural Engineer Do?

An architectural designer and a structural engineer have different roles.

Your architectural designer develops the overall design—how the spaces are arranged, how the proposed work connects with the existing building, and how the project is documented for permit and construction.

A structural engineer focuses specifically on the structural components of the building.

For example, an engineer may become involved when a project requires complex beams, significant structural alterations, foundation design, unusual loading conditions, or other structural work requiring engineering.

Not every renovation requires an engineer. When one is needed, your designer can often identify this during the design process and coordinate the engineer's information with the architectural drawings.

Can I Just Have a Contractor Draw It?

A contractor can be an invaluable part of your project, particularly when it comes to construction methods, scheduling, pricing, and actually building the work.

But designing the project and constructing it are different services.

Depending on the project, drawings submitted for a building permit must be prepared by someone who meets Ontario's applicable qualification requirements, unless an exemption applies.

Having the design properly developed before construction also gives contractors clearer information to price and build from, reducing the number of important design decisions that have to be made on site.

Who Should I Contact First?

If you're not sure which professional your project requires, you don't necessarily need to figure it out yourself before getting started.

For many residential projects, beginning with a qualified architectural designer can help establish the scope of work, review the existing property, identify applicable requirements, and determine whether additional professionals such as an engineer, surveyor, or architect will be required.

This is one of the reasons an early feasibility or project-assessment stage can be valuable—particularly for additions, major renovations, conversions, and projects involving structural changes.

What About Interior Design?

For renovation projects, there's often another consideration: the architectural design may only be one part of the overall project.

Once the layout and building design are established, decisions still need to be made about cabinetry, millwork, lighting, plumbing fixtures, flooring, tile, materials, finishes, and other interior details.

Some homeowners hire separate professionals for architectural and interior design. Others may benefit from a more integrated approach where both are considered together.

At LARK Drafting & Design, we offer both Architectural Design and Interior Design pathways, allowing services to be tailored to the needs of each project. For projects requiring both, the architectural and interior details can be developed as part of one cohesive design process.

The Right Professional Depends on the Project

There isn't one professional that's right for every renovation.

A relatively straightforward residential project may be well suited to a BCIN-qualified designer, while another may require engineering or architectural involvement. More complex projects may involve several professionals working together.

The important thing is to determine those requirements early—before investing significant time or money in a design that may need to change.

If you're considering a renovation, addition, or other residential project in Ontario, starting with a Feasibility & Project Assessment can help establish what's possible, what approvals may be required, and which professionals should be involved before the project moves into design.