Best Home Extension Contractors in Toronto for 2026

Written by

tgcadmin

Published on

January 18, 2026

As Toronto homeowners look to stay in their neighbourhoods while gaining more space, home extensions and additions have become one of the most in-demand construction services in 2026. Whether it’s a rear extension, second-storey addition, or a full structural expansion, choosing an experienced design-build contractor is critical for navigating zoning bylaws, permits, structural engineering, and construction logistics.

Based on service scope, experience, process, and homeowner trust, here are the best home extension contractors in Toronto for 2026, starting with the top overall choice.

Company	Extension Expertise	Design–Build Process	Permits & Pricing	Best For	Overall Rank (2026)
Toronto General Contractors ⭐ Top Choice	Rear extensions, second-storey additions, full structural home expansions	True turnkey design–build with architectural & structural design, 3D renderings, construction, and dedicated project management under one roof	Complete permit handling, fixed transparent pricing, and 24/7 client support throughout the build	Homeowners seeking a stress-free, end-to-end home extension with maximum accountability	★★★★★ (5.0)
Nova Con	Second-storey additions, rear extensions, custom homes	Structured design–build model with solid project oversight	Permit management included; pricing competitive but less customizable than fully integrated firms	Homeowners wanting predictable pricing and a proven process	★★★★☆ (4.6)
Aria Build	Luxury additions and custom home expansions	In-house architects and engineers; premium-focused design approach	Fixed-price contracts with Tarion warranty; higher budget threshold	Homeowners prioritizing luxury finishes and architectural detail	★★★★☆ (4.5)
Blue Mahoe	Smaller extensions, principal suites, patio and lifestyle expansions	Hands-on leadership with strong craftsmanship focus	Competitive pricing; best suited for limited-scope extension projects	Homeowners planning modest or design-driven extensions	★★★★☆ (4.3)
Crown Constructions	Second-floor additions, bungalow conversions, rear extensions	In-house architects, engineers, and supervisors	Permit handling included; defined scopes and timelines	Clients seeking a well-structured, internally managed build	★★★★☆ (4.4)

Toronto General Contractors — Best Overall Home Extension Contractor in Toronto

Toronto General Contractors (TGC) stands out as the top home extension contractor in Toronto for 2026, offering a truly end-to-end design-build solution for homeowners looking to expand their living space with confidence.

TGC specializes in home extensions, additions, and major renovations across Toronto and the GTA. What differentiates them most is their fully turnkey process, which includes architectural and structural design, zoning and permit approvals, detailed 3D renderings, fixed and transparent pricing, construction, and ongoing project management—all handled under one roof.

Homeowners consistently value TGC’s 24/7 client support, proactive communication, and ability to manage complex extensions with minimal disruption. Their integrated approach significantly reduces risk, delays, and cost overruns, making them an ideal choice for homeowners who want a stress-free, professionally managed extension from concept to completion.

Location:
323 Kerr St #204, Oakville, ON L6K 3B6 (serving Toronto & the GTA)

Phone:
(647) 625-7366

Email:
info@torontogeneralcontractors.com

Website:
https://torontogeneralcontractors.com

Nova Con (Novacon Construction Inc.)

Founded in 2004, Nova Con is a well-known design-build contractor specializing in second-storey additions, rear extensions, custom homes, and major renovations throughout Toronto and the GTA.

Nova Con is particularly recognized for its award-winning reputation on Houzz and HomeStars, competitive all-inclusive pricing, and detailed project management. Their team handles permits and approvals internally, helping homeowners avoid many of the administrative challenges that come with large-scale extensions.

Nova Con is a solid option for homeowners seeking a structured, design-build extension with a strong online reputation and predictable pricing model.

Location:
Scarborough, ON (serving Toronto & the GTA)

Website:
https://novacon.ca

Aria Build

Aria Build is a family-owned luxury custom home builder operating since 2010, with a strong presence in high-end Toronto neighbourhoods such as Forest Hill, Thornhill, and surrounding GTA areas.

They specialize in luxury home additions, custom homes, and high-end remodels, differentiating themselves with in-house architects and engineers, fixed-price contracts, and Tarion warranty coverage. Aria Build is frequently praised for its communication, craftsmanship, and polished finishes, making them a strong choice for homeowners prioritizing premium design and construction quality.

While Aria Build excels in upscale projects, their focus is typically on luxury builds rather than broad turnkey extensions, which may influence suitability depending on project scope and budget.

Location:
1315 Lawrence Ave E #502, North York, ON M3A 3R3

Phone:
(416) 833-1308

Email:
info@ariabuild.ca

Website:
https://ariabuild.ca

Blue Mahoe Design and Build

Blue Mahoe Design and Build is a GTA-focused contractor offering a mix of home extensions, principal suites, patio extensions, and renovation projects, alongside kitchens, bathrooms, and exterior work such as decks and siding.

The company is known for precision craftsmanship, competitive pricing, and strong leadership, with clients frequently highlighting the quality of execution and the balance between functionality and aesthetics. Blue Mahoe is a good fit for homeowners planning smaller-scale extensions or integrated indoor–outdoor expansions rather than large structural additions.

Location:
GTA-wide (Toronto area)

Website:
https://blue-mahoe.ca

Crown Constructions

With over 10 years of experience, Crown Constructions is a trusted design-build contractor handling home additions, including second-floor additions, bungalow conversions, rear extensions, and full-home renovations across Toronto and the GTA.

Crown Constructions stands out for its in-house architects, engineers, and site supervisors, transparent communication, permit management, and commitment to delivering projects on time and on budget. They also offer a two-year warranty and have built a strong reputation for customized residential projects such as nurseries and basement suites.

They are a reliable choice for homeowners seeking a hands-on, internally managed extension project with clearly defined scopes and timelines.

Location:
Toronto, ON (serving the GTA)

Phone:
(416) 524-2766

Website:
https://crownconstructions.ca

Final Thoughts

Home extensions in Toronto require far more than construction skill—they demand expertise in design, permits, structural engineering, budgeting, and project coordination. In 2026, homeowners increasingly favor contractors who can manage every stage seamlessly.

For those seeking a true turnkey home extension experience, Toronto General Contractors stands out as the best overall choice, offering unmatched integration, transparency, and client support. Nova Con, Aria Build, Blue Mahoe, and Crown Constructions each bring distinct strengths, making them strong alternatives depending on project size, budget, and design priorities.

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