Custom home builders

The 10 Best Custom Home Builders in Ottawa, ON

Updated 81 firms checked10 ranked

This list ranks 10 custom home builders in Ottawa, ON. It starts from Google Maps searches for custom home builders and related building work in Ottawa: 81 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 4 carry a badge for what each suits best, and places 5 to 10 run in order. Ratings and review counts are Google's, checked October 14, 2026. How we rank

Modello Homes

Best overall

Ottawa custom home builder that handles design, from first concept to architectural drawings, and then builds the house.

Updated

Why it ranks here

  • Has been building custom homes in Ottawa for over two decades.
  • Three partners with backgrounds in construction, design and finance founded the company.
  • Design work runs from concept to architectural drawings, with the firm's architect brought in for detailed plans once a client signs on.
  • The company's team includes architects and designers as well as tradespeople.
  • Named builds in its portfolio include Queens, South Beach, Cedarlakes, Red Castle and Rideau.
  • Offers its design and build services in Ottawa and the surrounding area.
Custom homes · Custom home design · Design-build Ottawa
Visit website Call 613-316-2103
5.0 from 46 Google reviews

IK Home Improvement

Best for builds with your own architect

Ottawa general contractor handling major renovations, home additions, heritage renovations and new custom homes across the city and surrounding area.

Updated

Why it ranks here

  • Founded in 2015 by Igor Kraizgur, who moved into renovation after working in IT procurement and project management.
  • Sets out the agreed scope, materials, responsibilities and schedule in a written Statement of Work before construction starts.
  • One project manager stays the client's main contact from start to finish.
  • Builds second-storey and rear additions, converts garages into living space and adds suites for parents or relatives.
  • Heritage renovations update older homes while keeping their architectural character and proportions.
  • Also offers project management on its own for clients who already have architects, engineers or trades lined up.
Custom homes · Major home renovations · Home additions · Heritage renovations · Project management Ottawa
Visit website Call 613-519-0684
5.0 from 31 Google reviews

Terzetto Homes

Best for one design-build team

Ottawa design-build remodelling company doing kitchens, bathrooms, basements, additions and full-home remodels, plus custom homes, through one team.

Updated

Why it ranks here

  • Its designers, project managers, trades and construction crew follow one coordinated plan, giving the owner a single point of contact.
  • Focuses on one project at a time.
  • Plans projects in 3D and supplies kitchen and bathroom fixtures as well as home furnishings itself.
  • Project types include full home remodels and additions, kitchens, bathrooms, basement and secondary dwelling unit conversions, and home organization.
Custom homes · Design-build remodelling · Home additions · Kitchen remodels · Basement conversions Nepean
Visit website Call 613-226-6886
4.8 from 88 Google reviews

Pagi Construction

Best for estate lot builds

Ottawa custom home builder that designs, manages and builds new homes from client blueprints, original designs or its own model plans.

Updated

Why it ranks here

  • Owned by husband and wife Patrick and Paula Macorig.
  • Clients can build from their own blueprints, design from scratch, or adapt one of four model home plans.
  • Combines design, construction and project management under one roof, and helps with interior design and decor.
  • Builds on estate lots such as those in Manotick as well as in city neighbourhoods like Westboro.
Custom homes · Home design · Project management · Interior design Ottawa
Visit website Call 613-697-1672
5.0 from 22 Google reviews

Holland Homes & Renovations

Ottawa design-build firm doing additions, open-concept renovations, coach houses and custom homes, plus kitchens, basements and bathrooms.

Updated
  • More than ten years of building and renovating homes in the National Capital Region.
  • Gallery lists new homes such as Sherbourne, Griffith and Beachvale, plus additions including Royal, Crossfield and Farnham.
  • Does open-concept renovations, with Stewart, Churchill and Hyde Park projects shown in its gallery.
  • For additions, it can provide visual representations of the finished work during the design phase.
Custom homes · Home additions · Open-concept renovations · Coach houses · Basement renovations Ottawa
Visit website Call 613-884-7366
5.0 from 16 Google reviews

Sunter Homes

Ottawa custom home builder led by a carpenter, also doing renovations, additions and custom woodwork such as cabinets and crown moulding.

Updated
  • Founded in 2010 by Adrian Sunter, its president, and draws on a background in carpentry.
  • Custom builds in its portfolio include homes in Calabogie, the Glebe, Britannia and Ottawa South, plus a multiunit build in New Edinburgh.
  • Builds on empty lots or rebuilds existing homes, and works with a client's own architect or designer.
  • Its carpentry covers custom woodwork, cabinets, furniture, crown moulding and baseboards.
  • Also renovates and adds on to existing homes, such as a flooring, kitchen and stairway renovation in Kanata.
Custom homes · Home additions · Home renovations · Custom carpentry Kanata
Visit website Call 613-913-9697
5.0 from 12 Google reviews

Ranks 07 to 10

Ottawa Carleton Construction

Ottawa design-build company building custom homes and multi-unit projects, with designs drawn by an in-house architectural technologist.

5.0 613-295-5253CallWebsite

RND Construction

Ottawa custom home builder focused on net zero and energy-efficient green homes, also selling new homes and doing custom renovations.

4.8 613-523-8598CallWebsite

TSH Custom Homes

Carp-based builder of new custom homes and major renovations for clients in the Ottawa Valley and Eastern Ontario.

4.8 613-986-5951CallWebsite

Casa Verde Construction

Ottawa builder of high-end custom homes that also does large-scale renovations, timber-frame cottages, ski chalets and small commercial projects.

5.0 613-421-8333CallWebsite

Compare the firms

FirmBest forServicesGoogle ratingArea
01Modello HomesCustom homes designed from first conceptCustom homes · Custom home design · Design-build5.0Ottawa
02IK Home ImprovementBuilds with your own architectCustom homes · Major home renovations · Home additions · Heritage renovations · Project management5.0Ottawa
03Terzetto HomesOne design-build teamCustom homes · Design-build remodelling · Home additions · Kitchen remodels · Basement conversions4.8Nepean
04Pagi ConstructionEstate lot buildsCustom homes · Home design · Project management · Interior design5.0Ottawa
05Holland Homes & RenovationsAdditions and open-concept layouts in Ottawa homesCustom homes · Home additions · Open-concept renovations · Coach houses · Basement renovations5.0Ottawa
06Sunter HomesCustom homes with detailed carpentry workCustom homes · Home additions · Home renovations · Custom carpentry5.0Kanata
07Ottawa Carleton ConstructionCustom homes and multi-unit buildings in OttawaCustom homes · Design-build · Multi-unit buildings · Construction management5.0Ottawa
08RND ConstructionEnergy-efficient and net zero custom homesCustom homes · Net zero homes · Green building · Custom home renovations4.8Ottawa
09TSH Custom HomesOttawa Valley custom homes and major renovationsCustom homes · Major renovations · Design-build4.8Ottawa
10Casa Verde ConstructionCustom homes, cottages and timber-frame buildsCustom homes · Large-scale renovations · Timber-frame homes · Cottages and chalets · Project management5.0Ottawa

What to check before hiring a custom home builder in Ottawa

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

    Building permits for homes in Ottawa come from the City of Ottawa, 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 Ottawa

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.

Design-build firms5

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

Home builders4

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

General contractors1

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

Custom home builders in Ottawa: 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 Ottawa 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 Ottawa?

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

Has something on this list changed?

Send the detail that is out of date, or the name and website of a firm that belongs here.

Request a correction Suggest a firm