Custom home builders

The 10 Best Custom Home Builders in London, ON

Updated 131 firms checked10 ranked

This list ranks 10 custom home builders in London, ON. It starts from Google Maps searches for custom home builders and related building work in London: 131 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 to 3 carry a badge for what each suits best, and places 4 to 10 run in order. Ratings and review counts are Google's, checked October 14, 2026. How we rank

CCR Build + Remodel

Best overall

London, Ontario general contractor building new custom homes and taking on full-home renovations, additions, kitchens, basements and net zero builds.

Updated

Why it ranks here

  • Arne Madsen started the company in 1989 as Creative Carpentry Renovations, and it is still a family-owned business.
  • Is RenoMark verified, which commits it to following a nationally recognized code of conduct.
  • Offers net zero builds, and a 100% net zero build is among its featured projects.
  • Splits renovation work by floor, covering main, upper and lower levels, with additions and specialty projects as separate services.
Custom homes · Basement renovations · Full-home renovations · Home additions · Net zero builds Middlesex Centre, serves London
Visit website Call 519-472-7461
5.0 from 55 Google reviews

Forest City Renovations

Best for new homes designed in-house

London, Ontario renovator and home builder doing bathroom, kitchen and basement renovations, interior and exterior work, and new homes.

Updated

Why it ranks here

  • Has over 15 years of experience in home renovation and new home building around London.
  • Keeps design, initial blueprints, construction and clean-up in-house.
  • Prepares a detailed proposal for every project it takes on.
  • Covers both interior and exterior renovations, with basements, bathrooms and kitchens as its main rooms.
Bathroom renovations · New home builds · Kitchen renovations · Basement renovations · Exterior renovations London
Visit website Call 519-281-3077
4.9 from 40 Google reviews

Westdel Construction

Best for homes with site excavation

London, Ontario custom home builder and contractor that also takes on remodelling and excavation work.

Updated

Why it ranks here

  • Rated 5.0 from 21 Google reviews, level with the top rating on this list
  • Its 3 services include custom homes, remodelling and excavation
Custom homes · Remodelling · Excavation London
Visit website Call 519-670-9167
5.0 from 21 Google reviews

Gold Level Contracting

London, Ontario renovation contractor doing full home remodels, income suites, kitchens, bathrooms, basements, decks, porches and fences.

Updated

Why it ranks here

  • Counts 18+ full home remodels completed, along with 70+ renovations.
  • Builds basement income suites that owners can rent out or use for visiting guests.
  • New custom homes go through its sister company, Liersch Custom Homes.
  • Works in London, Dorchester, St. Thomas, Stratford and the surrounding area.
  • Exterior projects cover decks, porches, fences and outdoor living spaces.
Full home remodels · Income suites · Basement renovations · Kitchen renovations · Decks and porches London
Visit website Call 519-203-9501
4.8 from 57 Google reviews

Pro Home Contracting

London, Ontario general contractor building new custom homes, major renovations and additions, with design-build and project management services.

Updated
  • Bryan Serrador has worked in the London, Ontario building market for over 20 years.
  • Offers design-build services for custom homes and hands-on project management that coordinates trades and schedules.
  • Its portfolio includes a third-floor addition that added bedrooms and bathrooms for a growing family.
  • New-build work includes The Country Retreat, a custom residence built from the ground up.
  • Draws on a network of local trades for its new builds, major renovations and additions.
Custom homes · Major renovations · Home additions · Design-build · Project management London
Visit website Call 519-520-9968
5.0 from 21 Google reviews

Opal Building

London, Ontario design-build company doing home renovations, additions and custom homes, plus some commercial work, from concept design to construction.

Updated
  • The company is co-owned by Kevin Bartman and Tyler McIlroy.
  • The design stage comes with 3D renderings and material samples so clients can picture the result.
  • Completes the drafting and coordinates any engineering, so clients do not have to coordinate designers and consultants themselves.
  • For a custom home it can build on the client's lot or find an on- or off-market property.
Custom homes · Home renovations · Home additions · Design-build · Commercial projects London
Visit website Call 226-680-0603
5.0 from 20 Google reviews

Ranks 07 to 10

Crown Homes

London, Ontario custom home builder working on its own lots in communities such as Sunningdale Crossing, or on a client's infill land.

4.9 519-473-0723CallWebsite

Kuzyn Construction

Family-owned London, Ontario builder of custom homes, garden suites and other ADUs, multi-unit housing and renovations with in-house millwork.

5.0 519-694-4776CallWebsite

Royal Oak Homes

Construction company

4.7 519-317-7592CallWebsite

XO Homes

Custom home builder

5.0 833-964-6637CallWebsite

Compare the firms

FirmBest forServicesGoogle ratingArea
01CCR Build + RemodelNet zero builds and full-home renovationsCustom homes · Basement renovations · Full-home renovations · Home additions · Net zero builds5.0Middlesex Centre, serves London
02Forest City RenovationsNew homes designed in-houseBathroom renovations · New home builds · Kitchen renovations · Basement renovations · Exterior renovations4.9London
03Westdel ConstructionHomes with site excavationCustom homes · Remodelling · Excavation5.0London
04Gold Level ContractingFull home remodels and income suitesFull home remodels · Income suites · Basement renovations · Kitchen renovations · Decks and porches4.8London
05Pro Home ContractingCustom builds and large home additionsCustom homes · Major renovations · Home additions · Design-build · Project management5.0London
06Opal BuildingDesign-build custom homes and additionsCustom homes · Home renovations · Home additions · Design-build · Commercial projects5.0London
07Crown HomesCustom homes on Crown lots or infill landCustom homes · Infill builds · Development builds · Condo residences4.9London
08Kuzyn ConstructionADUs and custom homes in LondonADUs and garden suites · Custom homes · Interior renovations · Multi-unit builds · Steel roofs5.0London

What to check before hiring a custom home builder in London

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

  1. 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.

  2. 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.

  3. The building permit from London

    Building permits for homes in London come from the City of London, and a new house needs one before construction starts. Agree in writing who applies for the permit and books the inspections.

  4. 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.

  5. 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 London

The 10 firms on this list fall into 4 groups, read from what each firm's own site says it does and how it is listed on Google.

Home builders5

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

General contractors2

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

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.

Renovation companies1

Renovation companies renovate existing homes, one room at a time or all of it at once.

Custom home builders in London: 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 London 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 London?

Building permits for homes in London come from the City of London. 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

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