Full-home renovations
Complete interior transformations across multiple floors, including structural work, kitchens, bathrooms and mechanical systems.
Full home renovations in Toronto →
Full-home renovations + additions / Toronto
Full-Home Renovations
and Additions in Toronto
For Toronto homeowners. Planning a major renovation or addition? Work directly with Cory from early feasibility and budget planning through completion.
Tell us aboutyour house↘
What we do
Major Toronto Renovations,
Led by One Accountable Builder
Keep the neighbourhood, neighbours and routines you value. We can rework the layout, add space, bring in more light or transform the entire house around the life you want to live there.
Y&CO Build takes on a small number of Toronto projects at a time. Owner Cory Yefet remains directly involved from feasibility and budgeting through construction and completion.
Built for consequential projects
Full Home Renovations and Home Additions
Y&CO Build is structured for renovations where the layout, systems, structure and investment need to be considered together.
Home additions
Lead rear, upper-floor, and layout-expanding additions, coordinating designers, engineers, consultants, permits, and construction to integrate seamlessly with the existing home.
Rear and second-storey additions →
Galley Avenue / Roncesvalles
A Full-Home Renovation in Roncesvalles
The family wanted to remain in the Roncesvalles / High Park area they loved, but the narrow, disconnected house no longer supported daily life. Y&CO Build gutted and rebuilt the interior across three levels, opened the main floor, added a contemporary rear extension and created a private primary suite.
The project included permitting, a new kitchen, bathrooms, finished lower level, structural upgrades, new mechanical systems, new decks, and landscaping — all delivered through a complete trade team managed and coordinated under one budget and schedule.
Have a house you want to rethink?
See the Galley Avenue full-home renovation ↘Meet your builder
Work Directly With Cory Yefet
Cory Yefet leads every Y&CO Build project—from the first feasibility conversation to the last detail on site. You work directly with the person responsible for the budget, schedule and trades.
His background combines hands-on renovation experience with more than twelve years leading complex teams and budgets. That discipline helps turn an ambitious vision into a plan that can actually be built.
Read Cory’s story +
Before Y&CO Build, Cory spent more than twelve years as an executive leader in technology. He was responsible for teams, operating plans and complex budgets—work that taught him how to align specialists, make decisions with incomplete information and remain accountable for the final result.
His path into construction began at home. Cory and his wife renovated their own house and experienced the process from the homeowner’s side: the excitement of seeing its potential, the pressure of consequential decisions and the importance of always knowing where the budget stood.
That renovation led to buying and transforming other Toronto houses. With his own money at risk, Cory learned where budgets quietly drift, which early decisions protect a schedule and why an inexpensive shortcut can become a costly correction. He fell in love with both the finished homes and the challenge of coordinating hundreds of decisions into one coherent result.
Friends began asking for help. Those early client projects became Y&CO Build, built around what Cory believes homeowners need most: an experienced, accessible person who understands both construction and the business required to run it well.
What that means for your budget
No responsible contractor can promise that an older Toronto house will reveal no surprises. Cory’s commitment is to make costs visible early, identify risk before construction, track the budget against real decisions and price changes before work proceeds. You know what is being recommended, what it costs and why.
Early cost guidance
What Does a Major Toronto Renovation Cost?
Every older Toronto home carries different conditions. These 2026 per-square-foot planning ranges are organized by project type and refined after the property and scope are reviewed.
A full interior remodel in Toronto can transform multiple rooms or floors within the existing footprint, including layout changes, kitchens, bathrooms, electrical, plumbing, HVAC, insulation, drywall, millwork and finishes.
Pricing depends on structural scope, existing conditions, design complexity, material selections and the level of finish.
Typically 200–300 sq. ft. added. Pricing varies based on foundation and structural requirements, exterior finishes and the complexity of integrating the addition with the existing home.
Renovations or reconfiguration of the existing main floor are priced separately.
A complete new second storey, with pricing depending on structural requirements, layout, bathrooms, mechanical upgrades, exterior work and level of finish.
For larger additions that expand both the footprint and upper level of the home. Pricing varies based on addition size, structural complexity, approvals, interior scope and finishes.
What moves the number: project type, zoning and approvals, structural work, existing conditions, kitchen relocation, mechanical systems, access, material selections and professional fees.
All figures are approximate Canadian-dollar planning ranges based on the supplied 2026 Toronto Home Addition Cost Guide. They are not quotes; the property, scope and finish level must be reviewed before a project-specific budget is established.
Not sure what your scope means for your budget?
Start with a feasibility conversation ↘From agreement to completion
Our Eight-Stage Home Renovation Process
A clear sequence keeps hundreds of decisions manageable. Explore our renovation process to see what happens and what we review with you before moving forward.
Explore each stage Select any box below to see what happens and what we review with you.
Stage 01
Agreement + design work
We confirm the working relationship, project goals, preliminary scope and budget framework. Cory coordinates measurements, existing-condition reviews and the design team as layouts and priorities take shape.
Stage 02
Design Approval + Permitting
The drawings, key specifications and selections are resolved far enough to build with confidence. Required permits and engineering work are coordinated, and the construction budget and schedule are brought into focus.
Stage 03
Demolition
The site is protected, services are made safe and the existing interior is carefully removed. Opening the house confirms concealed conditions and shows what must be repaired or adjusted.
Stage 04
Structure + new layout
Structural changes, framing, openings, stairs and additions establish the new form of the house. This is when the approved plans begin to become rooms you can physically experience.
Stage 05
Electrical, plumbing + HVAC
Wiring, plumbing supply and drainage, heating, cooling and ventilation are installed behind the walls. Fixtures, switches, lighting and equipment locations are coordinated before close-in.
Stage 06
Close In
Insulation and drywall define the finished rooms. Wet areas are prepared and waterproofed, followed by tile and foundational surface work before cabinetry and final finishes arrive.
Stage 07
Flooring, millwork + stone
Flooring, cabinetry, built-ins, trim and stonework bring precision and personality to the home. These installations are sequenced carefully to protect finished work and maintain momentum.
Stage 08
Fixtures, appliances + completion
Appliances, plumbing and lighting fixtures, hardware and final paint are installed. Exterior work is completed as applicable, followed by testing, deficiencies, cleaning and final handover.
Have a house you want to transform?
Talk with Cory about the first step ↘What direct leadership changes
Your Vision, Managed
With Clarity
Cory connects the creative decisions to the budget, schedule and work on site—so you are not left managing the gaps between separate professionals.
With Y&CO BuildTypical experience
✓Cory leads your project from the first conversation through completion.—The person you meet may hand the project to a coordinator.
✓Feasibility, zoning and budget are reviewed early.—Property constraints may surface after drawings advance.
✓A limited number of active projects receive direct senior attention.—Attention is divided across a larger volume of projects.
✓Changes are priced and approved before work proceeds.—The budget impact of changes may become clear later.
✓One accountable lead coordinates designers, engineers and trades.—You may need to manage several separate conversations.
Want one accountable person from beginning to end?
Speak directly with Cory ↘Toronto renovation questions
Questions Toronto Homeowners Ask Before Renovating
When should we speak with a contractor?+
Before drawings are too far advanced. Early construction input helps test the scope against the property, budget and likely permit path while meaningful choices are still available.
How much should we plan to invest?+
Budgets vary by type and complexity. Full interior remodels commonly range from $250–$500 per sq. ft. Approximately $200,000–$350,000 may be required for a single-level rear extension, $400,000–$650,000 for many full second-storey additions, and $550,000–$950,000+ for combined or complex renovations or additions. These are early planning ranges, not quotes; zoning, structure, existing conditions, interior reconfiguration and finish level can move the total. Read the complete Toronto renovation cost guide.
Who will manage our project?+
Cory remains directly involved from the first feasibility conversation through construction and completion, coordinating the budget, schedule and trades.
Can you work with our architect or designer?+
Yes. Y&CO Build can coordinate with the professionals you have already selected or help assemble the designers and engineers your project requires.
How long does a major Toronto renovation or addition take?+
Plan for roughly 9–18 months from early feasibility through move-in. Allow about 0–6 months for design and permits and about 6–10 months for construction, depending on complexity and whether Committee of Adjustment approval is required.
Should we renovate or move?+
Renovating can make sense when you value your neighbourhood, the property can support the space you need and you have time for a proper planning and construction process. Compare the project budget with the full cost of moving, including land-transfer taxes, selling costs, legal fees and moving expenses.
How do we avoid budget surprises?+
Start with zoning and property feasibility before drawings advance, establish a realistic budget tied to your actual scope, resolve key selections early, and maintain clear, consistent communication with your contractor so costs, expectations and potential changes are understood throughout the project.
Will we need Committee of Adjustment approval?+
Possibly. If an addition exceeds zoning rules for setbacks, lot coverage, height or floor space, a minor variance may be required. Review zoning before design so the approval path, time and cost are understood early.
Will we need to move out?+
For a full gut renovation, homeowners should generally plan to relocate during active construction. The exact answer depends on the scope, which systems are affected and whether safe, functional living areas can be maintained.
What happens after we submit the form?+
Cory reviews the property location, scope, timing and budget range. If the project appears aligned, he contacts you directly for a conversation and recommends the most useful next step.
Begin
Tell Us About Your Home
You don’t need drawings or a finished brief. Tell us where the house is, what is not working and what you hope to change.