- North York, Toronto & GTA
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- Home Additions
Home Additions Toronto
Grow your home without moving. Second storey additions, rear extensions, garage conversions, and bump-outs across Toronto and the GTA.
When your family outgrows your home, moving is not always the right answer — especially in Toronto’s competitive real estate market where upsizing means dramatically higher purchase prices, land transfer tax, realtor fees, and leaving a neighbourhood you love.
A home addition lets you stay put, gain exactly the space your family needs, and significantly increase your property value — often at a fraction of what buying a larger home would cost. Total Reno & Design has been delivering home additions across the GTA for over 25 years.
200+
Additions Built
25+
Years Experience
100%
Permit Managed
4.9★
Google Rating
What Makes Our Service Different
SECOND STOREY ADDITIONS
Double Your Space Without Moving
Adding a full second storey to a Toronto bungalow is the most transformative renovation you can make. You gain two to three bedrooms, full bathrooms, and generous ceiling heights without sacrificing a single square foot of your backyard. We manage every detail from structural engineering to the last coat of paint.
Existing roof removed, second floor framed on existing load path
Two to three bedrooms and one or two full bathrooms added
Master ensuite with walk-in closet integrated into the plan
New staircase designed to integrate seamlessly into main floor
Second storey addition — North York bungalow
Rear addition with kitchen extension — Etobicoke
REAR ADDITIONS
Rear Additions That Transform Your Main Floor
Extending the back of your Toronto home is the most cost-effective way to add meaningful square footage. A rear addition can deliver an enlarged kitchen, a genuine main floor family room, a mudroom and laundry area, or a main floor primary bedroom with direct garden access.
Seamless roofline and exterior cladding integration
Enlarged kitchen with full island, mudroom, or family room
Large glazed openings connecting interior to rear garden
In-floor heating and high-performance insulation as standard
OUR CONSTRUCTION STANDARD
Built to Last: How We Build Every Addition
Every home addition we construct uses engineered lumber — LVL beams, I-joists, and rim boards — for dimensional stability and long-term structural integrity. Exterior walls are insulated to R-24 or better, foundations are fully waterproofed, and all windows are Energy Star certified.
Engineered LVL beams and I-joists throughout the structure
R-24+ exterior wall insulation exceeding Ontario Building Code
Energy Star certified windows — triple-pane option available
Full waterproofing with dimple membrane and drainage tile
Structural framing — Vaughan home addition
Garage conversion to home office — Mississauga
GARAGE CONVERSIONS
Garage Conversions: Fast, Finished Living Space
An attached or detached garage conversion is often the fastest path to finished, heated square footage. We insulate walls and ceiling, install proper flooring over the concrete slab, run dedicated electrical and heating, add natural light, and finish the interior to full living space standards.
Spray foam or rigid insulation to eliminate cold transfer
Heated floor or ductless mini-split heating and cooling system
New windows, glazed doors, or skylights for natural light
Full electrical, lighting, and data wiring to living code
Full Permit Management
Every City of Toronto permit, engineering submission, and Committee of Adjustment application managed on your behalf.
Perfectly Matched Exterior
We source matching brick, siding, and roofing so your addition looks like it was always part of the house.
Design-Build Under One Roof
Architects, engineers, and all trades in-house. One contract, one team, one point of contact throughout.
What’s Included
- Architectural Design & 3D Visualization — Full design integrating seamlessly with your existing home — floor plans, elevations, and 3D renders
- Structural Engineering — Load-bearing work, foundation design, beam sizing — engineered and stamped for permit submission
- City of Toronto Permit Management — All permit drawings, engineering reports, and applications prepared and submitted on your behalf
- Foundation & Concrete Work — New reinforced foundation to current OBC with waterproofing, drainage, and insulation
- Structural Framing & Roof — Engineered lumber framing, roof tied into existing structure, weathertight at every stage
- Exterior Envelope — Roofing, cladding, windows, doors, and all flashings matched to your existing home
- HVAC Extension — Heating and cooling extended into the addition or supplemental mini-split system installed
- Electrical & Plumbing — All new wiring and plumbing for the addition — licensed, permitted, and inspected throughout
- Full Interior Finishing — Insulation, drywall, paint, trim, flooring, lighting, millwork, and all fixtures
- Final City Inspection — Building inspection passed and certificate of occupancy obtained before final handover
Our Process
01
Free Feasibility Consultation
We visit your home, review your lot survey, assess zoning bylaws, and advise on what type of addition is feasible.
02
Architectural Design
Detailed floor plans, elevations, and exterior material selections with full 3D visualization.
03
Structural Engineering & Permits
Structural drawings stamped by our engineers. Full permit application submitted to the City of Toronto.
04
Site Preparation & Foundation
Excavation, formwork, and new concrete foundation poured, cured, and waterproofed.
05
Structural Framing & Roof
Addition framed floor to roof. Roof tied into existing structure. Sheathing and roofing installed.
06
Exterior Envelope
Windows, doors, cladding, and all flashings installed. Matching brick or siding sourced and applied.
07
Mechanical Rough-In
All plumbing, electrical, and HVAC rough-in completed, inspected, and approved before closing walls.
08
Interior Finishing
Insulation, drywall, paint, flooring, trim, cabinetry, and all fixtures. A seamless part of your home..
09
Final Inspection & Handover
Final building inspection passed. Full walkthrough — every detail reviewed to your satisfaction.
Frequently Asked Questions
Yes. All structural home additions in Toronto require a building permit. Permits ensure structural design is sound, work is inspected at key stages, and the addition is safe and code-compliant. We manage the entire permit process.
A rear addition typically takes 5 to 7 months from permit approval to completion. A full second storey may take 7 to 10 months. City of Toronto permit processing currently takes 6 to 16 weeks depending on project complexity.
Costs vary significantly based on size, type, and finish level. We provide detailed free quotes for every project. Contact us for a free consultation and accurate itemized estimate tailored to your property and goals.
Yes. Matching your existing home is a primary design goal. We source matching brick, replicate roofline pitch, match window proportions, and ensure interior finishes transition seamlessly between old and new.
The Committee of Adjustment is a City of Toronto body that grants minor variances to zoning bylaws — for example, allowing an addition slightly larger than the standard bylaw permits. We manage the full application if required.
In most cases yes, especially with current Toronto real estate prices. An addition avoids substantial realtor and land transfer costs, keeps you in your neighbourhood, and is fully customized to your family’s needs.
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