The 10 Best Custom Home Builders in Toronto, ON

Updated Oct 2026132 firms checked10 ranked

This list ranks 10 custom home builders in Toronto, ON. It starts from Google Maps searches for custom home builders and related building work in Toronto: 132 firms were checked, and building and renovation firms with their own website and an open Google listing went forward. Firms are weighed on their Google rating, the number of reviews behind it, how closely their services match custom home building, and their portfolio. The strongest firm overall sits at place 1, places 2 and 4 carry a badge for what each suits best, and the rest run in order. Ratings and review counts are Google's, checked October 14, 2026. How we rank

Why it ranks here

Established in 2013 and run with founder-led guidance on its projects.
Recognized by the Quality Business Awards as Toronto's Best General Contractor in 2024.
Named in Best of Houzz for service in both 2023 and 2024.
Is affiliated with RenoMark, BILD and the NKBA.
Its renovations come with a one-year workmanship warranty from handover.
Clients get a single point of contact rather than separate contractors, designers and consultants.

Why it ranks here

Won the Consumer Choice Award for Toronto Central in 2021, 2022, 2023 and 2025.
Holds the Top Choice Award Mark of Excellence for 2022, 2023, 2025 and 2026.
Received the Best of Houzz award for service in 2020, 2021, 2022, 2023 and 2024.
Has 20+ years of experience behind its custom home and renovation work.
Tracks each build by milestones, documents decisions early and sets out the schedule impact of change orders.
Has built custom homes in North York, Thornhill and Whitchurch-Stouffville.

Why it ranks here

Rated 5.0 from 69 Google reviews, level with the top rating on this list
Based in Concord, outside Toronto
Its 4 services include home additions, custom homes, general contracting and interior construction

Why it ranks here

Family-owned and established in 2000, the company builds custom homes in the Greater Toronto Area.
Its service list runs from demolition, excavation and foundations to framing, roofing, siding and eavestroughs.
Roofing work covers shingle, flat and metal roofs, including repairs and restoration across the GTA.
Its project history spans residential, commercial and municipal work around Toronto and nearby cities.
Coordinates the contractors, builders and architects involved in bringing a custom home to life.

Founded by Yiannis Goniadis, who comes from a family of builders and started in construction at seventeen.
Accepts only new builds, home additions and full-scale renovations in Toronto and the GTA at present.
The company reports completing hundreds of projects for its clients.
Lists insulated concrete form construction among its services, next to custom homes and additions.
The team includes an architectural designer and a tile installer working with the general contractor.
Service area takes in Ajax, Pickering and Scarborough through to Vaughan, Brampton, Mississauga and Oakville.

Ranks 07 to 10

Number 7: MBC Homes

North York custom home builder and construction company that also takes on home additions.

5.0 647-484-7366Call Website

Number 8: Blue Mahoe Design and Build

Toronto design-build firm doing basement renovations, kitchen and bathroom remodels and custom homes.

5.0 647-807-2889Call Website

Number 9: Stonebrooke Homes

Custom home builder doing architecture-led homes, cottages, renovations and additions in Toronto, Oakville and Muskoka.

5.0 905-851-2772Call Website

Number 10: South Park Design Build

Toronto custom home builder that also works as a construction company and general contractor.

5.0 647-274-3186Call Website

Compare the firms

Rank	Firm	Best for	Services	Google rating	Area
01	Astaneh Construction	Rear extensions and second-storey additions	Custom homes · Full-home renovations · Home additions · Architectural drawings · Project management	Rated 5.0 out of 5 from 119 Google reviews	Toronto
02	KingsGate Luxury Homes	Custom builds with interior design	Custom homes · Major renovations · Home additions · Construction management · Interior design	Rated 5.0 out of 5 from 94 Google reviews	North York
04	JP Lucky Construction	Building to an architect's plans	Home additions · Custom homes · Framing · Foundations · Roofing	Rated 4.9 out of 5 from 149 Google reviews	Toronto
05	Eastern Western Construction	Full-scale renovations and new builds	Custom homes · Home additions · Full-house renovations · Insulated concrete forms · Design-build	Rated 5.0 out of 5 from 67 Google reviews	Toronto
08	Blue Mahoe Design and Build	Design-build kitchens and custom homes	Kitchen remodels · Custom homes · Bathroom remodels · Basement renovations · Commercial renovations	Rated 5.0 out of 5 from 47 Google reviews	Toronto
09	Stonebrooke Homes	Passive House and net zero custom homes	Custom homes · Cottages · Renovations and additions · Design consulting · Construction management	Rated 5.0 out of 5 from 44 Google reviews	Vaughan, serves Toronto

What to check before hiring a custom home builder in Toronto

Five things to confirm with any firm, on this list or not, before you sign. The rules below are Ontario's and Toronto's.

Registration with the WSIB
Ask the firm for a clearance certificate from the WSIB, which confirms it is registered for workers' compensation and its account is in good standing. The certificate confirms the firm is registered with the WSIB and up to date on its premiums, so check its dates cover your job.
Liability insurance
Ask for a certificate of insurance that names the firm and shows commercial general liability coverage in force for the dates of your job, and check that the subcontractors it brings in are covered too.
The building permit from Toronto
Building permits for homes in Toronto come from the City of Toronto, and a new house needs one before construction starts. Agree in writing who applies for the permit and books the inspections.
A written contract
Get the scope of work, the payment schedule tied to stages of the work, start and finish dates, how changes are agreed and priced, and who handles permits and cleanup, all in one signed contract before any work starts.
The new home warranty
A new house in Ontario must be built by a builder licensed by the Home Construction Regulatory Authority (HCRA) and comes with Tarion's warranty: one year on workmanship and materials, two years on items such as water penetration and the electrical, plumbing and heating systems, and seven years on major structural defects.

Types of custom home builder in Toronto

The 10 firms on this list fall into 3 groups, read from what each firm's own site says it does and how it is listed on Google.

Home builders7

Home builders build new houses as their main work, and some take on additions and major renovations too.

Number 2: KingsGate Luxury Homes
Number 3: Route Homes
Number 4: JP Lucky Construction
Number 6: Xavieras Custom Homes
Number 7: MBC Homes
Number 9: Stonebrooke Homes
Number 10: South Park Design Build

Design-build firms2

Design-build firms design the project and build it under one contract, so one firm answers for the drawings and the work.

Number 5: Eastern Western Construction
Number 8: Blue Mahoe Design and Build

General contractors1

General contractors run building projects of many kinds and bring in the trades each job needs.

Number 1: Astaneh Construction

Custom home builders in Toronto: common questions

What is the difference between a custom home builder and a production builder?

A custom builder builds one home to your plans, on your lot or a lot you choose together. A production builder sells homes from a set range of plans in its own developments, with a fixed list of options and upgrades.

Does a new home come with a warranty?

In British Columbia, Alberta and Ontario, new homes must carry third-party home warranty coverage, and the builder registers each home before construction starts. Ask the builder which warranty provider covers its homes and what the coverage includes.

Should the builder or an architect design the house?

Either can work. Many custom builders offer design and build under one contract, with a designer or architect on their team. Others build to plans you bring from an independent architect. Ask to see finished homes built from both routes.

What should I ask a custom home builder before signing?

Ask to walk through homes it has finished and to speak with past clients, which warranty provider covers its homes, who will design the house, how changes are handled once building starts, and who applies for the permit and books the inspections.

How do I check that a contractor in Toronto is registered with WSIB?

Ask the firm for a clearance certificate from the WSIB. The certificate confirms the firm is registered with the WSIB and up to date on its premiums, so check its dates cover your job.

Who issues building permits in Toronto?

Building permits for homes in Toronto come from the City of Toronto. For custom home building, a new house needs one before construction starts. Many firms apply for the permit as part of the job, so agree who does it before you sign.

Before you get quotes

Corrections

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The 10 Best Custom Home Builders in Toronto, ON

Number 1: Astaneh Construction

Number 2: KingsGate Luxury Homes

Number 3: Route Homes

Number 4: JP Lucky Construction

Number 5: Eastern Western Construction

Number 6: Xavieras Custom Homes

Ranks 07 to 10

Number 7: MBC Homes

Number 8: Blue Mahoe Design and Build

Number 9: Stonebrooke Homes

Number 10: South Park Design Build

Compare the firms

What to check before hiring a custom home builder in Toronto

Registration with the WSIB

Liability insurance

The building permit from Toronto

A written contract

The new home warranty

Types of custom home builder in Toronto

Home builders7

Design-build firms2

General contractors1

Custom home builders in Toronto: common questions

Before you get quotes

Building a Custom Home in Canada: Steps and Timeline

Cost-Plus vs Fixed-Price Contracts: Which Suits Your Build

Cost to Build a House in Canada: Per Square Foot by Province

Has something on this list changed?