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Detached Garage Construction in Ottawa

Detached Garage Construction in Ontario

A detached garage is its own structure, built from a new foundation with its own footings, framing, roof, and often its own electrical panel or subpanel. That makes it a bigger undertaking than a shed or a carport, closer in scope to a small addition. It usually involves a building permit, a site plan showing setbacks from your property line, and inspections at the footing, framing, and final stages. In Ottawa, frost depth matters a lot: footings typically need to go down around 4 feet to avoid heaving in our freeze-thaw winters.

We've looked at 34 detached garage builders working in and around Ottawa. The businesses that come out ahead in our scoring tend to pull permits themselves rather than leaving that to the homeowner, give a written scope covering foundation type, framing lumber, roofing, siding, insulation (if any), and electrical, and stand behind the work with a clear warranty on both labor and materials.

For the short list of who we'd call first, see our ranked guide to detached garage builders in Ottawa. Our scoring method, including how we weigh licensing, past project quality, and customer feedback, is explained on the methodology page.

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All detached garage construction in Ottawa, ranked by score and relevance

We found 34 businesses offering detached garage construction in Ottawa; 24 met the criteria for the scored directory. The order weighs each business's overall score by how much of its reviewed work is detached garage construction, so a lower-scored specialist can rank above a higher-scored generalist.

Roj building
#1
85

Roj building

5.0(32)✓ Google-verified

All 32 reviews award five stars. Reviewers consistently praise the team's professionalism, punctual delivery, and attention to detail. Work quality and communication stand out as defining strengths across projects.

Detached Garage Construction
PR Builder
#2
85

PR Builder

5.0(27)✓ Google-verified

Pawan and his team deliver consistent, detail-focused work across renovations and repairs. Reviewers praise swift project completion, transparent pricing, clean daily job sites, and respectful communication. Every single review is five stars, with clients often returning for additional projects. The business handles basement finishing, kitchen remodels, bathroom work, painting, flooring, and general home renovation. Their website lists detached garage construction, but reviews focus on interior and residential work. Licensed and insured in Ottawa, they serve Nepean, Barrhaven, Kanata, and Orleans.

Detached Garage Construction
FJA Construction
#3
89

FJA Construction

5.0(60)✓ Google-verified

All 15 reviews gave five stars. Reviewers consistently praise FJA for professionalism, reliability, and finish quality across multiple project types. Owner Anas and team members earn repeated mention for listening to clients, staying on budget, and maintaining long-term relationships with households.

Detached Garage ConstructionGarage Additions & Conversions
Magnolia Design & Build
#4
89

Magnolia Design & Build

4.8(126)✓ Google-verified

Magnolia's track record centers on owner Joey and his team delivering complex home projects exactly as quoted, often faster than expected. Bathrooms and basements dominate the work, but what stands out across reviews is their willingness to tackle difficult jobs-excavating bedrock, underpinning foundations, redirecting plumbing-and their responsiveness to calls on weekends. Staff are named frequently and praised by name: Richard, Faraz, Kevin, Pierre, Michelle, Giuseppe, and others appear in multiple reviews as patient, professional, and genuinely invested in the homeowner's satisfaction. Clients consistently note the team cleans up daily, communicates every step, and takes time to understand what matters to each household. Even long-term repeat clients and referrals from neighbors suggest Magnolia handles jobs of varying scale with the same care. The rare mention of a timeline slip (two weeks longer than estimated on one basement) was framed as worth the wait for quality.

Detached Garage ConstructionGarage Additions & ConversionsCustom Finishes & Heated Garages
Ottawa Contractors
#5
83

Ottawa Contractors

5.0(18)✓ Google-verifiedPublishes prices

Every review reflects the same experience: a well-organized crew that finishes on time, communicates daily, and sweats the details. Owners praise custom framing, trim work, and cabinet quality alongside their speed and willingness to adjust plans mid-project without drama. Staff keep job sites spotless and handle permits without fuss. The business states transparent pricing and offers labour at $45-$85 per hour; reviewers confirm no surprise costs and fair rates for the quality delivered. Their approach to matching homeowners with the right trades simplifies the hiring process itself.

Detached Garage Construction

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Perfect Work Done Inc.
#6
81

Perfect Work Done Inc.

4.9(46)✓ Google-verified

Most customers report Anas delivers kitchens, bathrooms, and basements on schedule at reasonable rates, with careful attention to detail and responsive communication throughout. One detailed complaint describes incomplete tile work, misaligned fixtures, and payment demands mid-project, suggesting inconsistency or quality lapses that warrant direct questions before hiring. The business does primarily interior renovations (kitchens, bathrooms, basements, cabinet refinishing) rather than garage builds. Review depth is strong: 46 total reviews, 96% five-star. Staff include Anas (B.Eng, PMP, president) and his father; work quality and cleanup are frequently praised.

Detached Garage Construction
RND Construction Ltd
#7
81

RND Construction Ltd

4.8(19)✓ Google-verified

Over more than three decades, RND Construction has built a reputation for meticulous custom homes and renovations centred on energy efficiency and sustainability. Reviewers consistently praise the team's attention to detail, professionalism, and willingness to communicate openly about costs and timelines.

Detached Garage Construction
OakWood Designers & Builders
#8
81

OakWood Designers & Builders

4.5(101)✓ Google-verified

OakWood's team consistently delivers polished custom homes, additions, and kitchen renovations with careful project oversight. Reviewers praise named project managers like Mike Ortis and designers Drew Mason and Alicia Genyn for translating visions into detailed 3D renderings and keeping builds on track. Expect higher-than-anticipated costs if your property needs substantial site work, though the firm's warranty on workmanship and transparent collaboration ease that stress. Their strengths lie in meticulous planning, clear communication from first contact, and willingness to guide owners through complex material and design choices. Since 1956, they've built a reputation as the region's top builder for both new construction and renovation, with long-standing client relationships.

Detached Garage Construction
Malok Build
#9
79

Malok Build

5.0(21)✓ Google-verified

Malok Build consistently delivers projects on schedule and budget, with crews who show genuine care for the work and the client's home. The owner, Evgeniy (also known as Yevhenii, Eugene, or Yudjin in reviews), actively listens and adjusts on the fly; teams clean as they go and address any post-completion issues without extra charge. Pricing ranks as fair and competitive against other local contractors, and the workmanship spans decks, renovations, fencing, and basement finishing. Reviewers name specific team members including Vitalii and Valerie, praise the crew's reliability and politeness, and highlight how the business manages the disruption of renovation. The backyard projects-composite decks, gazebos, fences, and stairs-receive particular praise for design and longevity. Several long-term clients have returned for multiple jobs, suggesting lasting relationships.

Detached Garage Construction
The Assembly Experts
#10
85

The Assembly Experts

4.7(155)✓ Google-verified

Most jobs run on time and finish to a high standard; repeat customers praise durable work and fast turnarounds. Named staff like Jeff and Shane show confidence and speed, completing gazebos, pergolas and sheds in hours rather than days. A small but vocal minority report problematic interactions with crew members and pushback when issues arise post-completion. The business assembles outdoor structures, furniture, and flat-pack items across Ottawa and Gatineau. Responses to negative feedback have sometimes escalated tension. Payment terms were muddled in at least one recent case, leaving a customer frustrated by shifting demands mid-job.

Detached Garage ConstructionGarage Additions & ConversionsGarage Design & Permit Drafting
C Tech Builders
#11
78 low data

C Tech Builders

5.0(23)✓ Google-verified

All 23 reviews are five-star. Reviewers consistently mention owner Shiyas's quick diagnosis of complex problems, transparent pricing, and ability to stay on budget. Projects span basements, kitchens, bathrooms, flooring, and plumbing work; teams kept work areas clean and met timelines without stress.

Detached Garage Construction
SS Carpentry and Renovations
#12
72 low data

SS Carpentry and Renovations

5.0(4)✓ Google-verifiedPublishes prices

All four reviews are five-star. Customers praise the team for clean finishes, custom work (walnut shelves, kitchen tiles, deck), and finishing ahead of schedule. Named technician Akash is credited for installing custom work well. No complaints are evident from the available reviews.

Detached Garage Construction
Ottawa Carleton Construction
#13
76 low data

Ottawa Carleton Construction

5.0(12)✓ Google-verified

Five-star ratings consistently reflect Frank Porcari's hands-on leadership, knowledge of Ottawa building codes, and ability to deliver custom homes and multi-unit projects on schedule and within budget. Reviewers praise workmanship quality, responsive follow-up, and a collaborative design process.

Detached Garage ConstructionGarage Additions & ConversionsCustom Finishes & Heated Garages
MASTER WORKS
#14
71 low data

MASTER WORKS

5.0(3)✓ Google-verifiedPublishes prices

Master Works delivers skilled renovation work with a strong focus on cleanliness and detail. Three five-star reviews highlight punctual completion, fair pricing, and tidy job sites across painting, decking, and fencing projects.

Detached Garage Construction
Ottawa General Contractors
#15
75

Ottawa General Contractors

4.4(240)✓ Google-verified

Long-term clients and recent kitchen/bathroom work praise detailed project management, quality finishes, and staff responsiveness-Murad and George stand out for their pace and problem-solving. However, a minority of reviewers report being quoted significantly above market, facing surprise invoices mid-project, and encountering unresponsive management when disputes arose. One reviewer cited Reddit discussion and alleged NDA pressure, raising questions about consistency between pre- and post-contract experience. Work spans major renovations (structural changes, full interior rebuilds, basement additions) and smaller finishing jobs. The business claims service across Almonte, Alta Vista, Ashton, Barrhaven, Blackburn Hamlet, Burritts Rapids, Carleton Place, and Carp. Their website lists kitchen, basement, and home addition design services; warranty and project-management models are mentioned favorably by satisfied clients.

Detached Garage ConstructionGarage Additions & ConversionsGarage Design & Permit Drafting
Caivan Conservancy Sales Gallery & Model Homes
#16
69

Caivan Conservancy Sales Gallery & Model Homes

4.3(24)✓ Google-verifiedPublishes prices

The sales gallery and model homes experience stands out to most visitors, who praise Caivan's staff (especially Gabe, Simon, and Fayja) for their knowledge and care in guiding first-time buyers. However, several owners report significant frustration with the completed homes: structural issues taking months to remedy, work finished weeks or months late, and inconsiderate job-site practices like early weekend work and debris left on lawns. Quality and reliability after purchase appear to be the dividing line. While recent visitors and new buyers enthuse about the design and the buying process itself, established residents voice concerns about warranty responsiveness and overall build standards. The business excels at the sales experience but struggles with post-completion accountability.

Detached Garage Construction
Monaco Construction
#17
68

Monaco Construction

4.1(59)✓ Google-verified

Most jobs result in solid finished work, with crews praised for skill and professionalism; however, 22% of reviews flag serious red flags. Problems cluster around project management: communication gaps stretch timelines dramatically (weeks promised become three months), unreturned calls, and loose site discipline leave debris on properties for months. One job went unpaid and unfinished. When things go right, people book them again; when they don't, the experience turns sour fast. Decks, kitchens, bathrooms, and foundation repair tend to land well. Crew members Stephan, Alex, and Adam drew specific praise. The gap between quick, quality jobs and painful delays suggests the workload or staffing varies; front-end communication and scheduling accountability are weak points worth clarifying upfront.

Detached Garage Construction
Urbandale Construction: Riverside South Experience Centre
#18
68 low data

Urbandale Construction: Riverside South Experience Centre

4.0(82)Publishes prices

Urbandale builds solid, energy-efficient homes with quality materials and thoughtful design support, but buyers report inconsistent after-sales service and communication gaps. Some experienced long delays and quality issues with fixtures; others praised staff like Giles and Mario for fixing problems after closing.

Detached Garage Construction
Glenview Homes - The Commons Orleans
#19
67

Glenview Homes - The Commons Orleans

4.0(39)✓ Google-verifiedPublishes prices

Glenview's sales, design, and pre-purchase experience earn consistent praise for attentiveness and knowledgeable staff like Jamie, Nichole, Derrick, and Greg. Yet post-closing satisfaction fractures sharply: warranty response is slow or dismissive, finish quality varies, and some homeowners faced unannounced work visits and unresolved defects months after possession. Named staff like Fabien and Rigo earned specific gratitude for aftercare, but senior management tone has disappointed some.

Detached Garage Construction
Holland Homes & Renovations Inc.
#20
70 low data

Holland Homes & Renovations Inc.

5.0(16)✓ Google-verified

Holland Homes delivers on major additions and renovations with owner Robert and project manager Scott driving consistent praise for design input, site responsiveness, and budget honoring across 16 five-star reviews. Strength lies in managing old-home challenges, coordinating trades, and keeping homeowners informed throughout.

Carriage House & Laneway GaragesDetached Garage ConstructionGarage Additions & Conversions
HN Homes Head Office
#21
66 low data

HN Homes Head Office

4.2(23)✓ Google-verified

HN Homes draws strong praise from buyers who value staff responsiveness and home quality, with several naming specific team members for going beyond typical builder care. However, recent complaints describe persistent quality control failures (flooring leaks, roof problems, tiling defects) and frustration with repairs that require multiple visits without lasting resolution. The builder appears to perform well during the sales phase but inconsistently after closing.

Detached Garage Construction
CB Home Construction
#22
63 low data

CB Home Construction

5.0(5)✓ Google-verified

All five reviews rate CB Home Construction at five stars. Work ranges from fences to decks to garage extensions; reviewers praise speed, fair pricing, and the named crew (Vincent, Dave, Eric, Mike). No complaints recorded.

Detached Garage Construction
Minto Barrhaven | New Homes Sales Centre
#23
61

Minto Barrhaven | New Homes Sales Centre

3.6(103)✓ Google-verified

Minto Barrhaven draws strong praise for certain sales staff like Lisa and Harry, and customers report homes closed on schedule with warranty issues resolved promptly. Recent complaints focus on post-purchase disappointment: multiple homeowners faced electrical damage from a storm and claim the builder denied responsibility without investigation, the sales team gave conflicting instructions on lot release day, and some visitors describe the office as unwelcoming.

Detached Garage ConstructionGarage Doors & Openers
Mattamy Homes - Ottawa Head Office
#24
47

Mattamy Homes - Ottawa Head Office

2.7(74)✓ Google-verifiedPublishes prices

Sales and design staff earn consistent praise for professionalism and attentiveness, particularly Tala and the Ottawa team. However, post-purchase experience is marked by serious gaps: warranty responses are slow, evasive, and dismissive, with roof leaks, water infiltration, and construction defects taking years to address or going unacknowledged. Buyers report substandard finishes, poor workmanship, and a warranty department that deflects responsibility rather than resolving issues.

Detached Garage Construction

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Common questions about detached garage construction

How much does a detached garage cost in Ottawa?
Most single-car detached garages run from the mid-$20,000s up, with two-car garages more commonly landing in the $35,000 to $60,000+ range depending on size, foundation depth, siding, insulation, and whether you add electrical or a finished interior. Concrete work, current lumber prices, and site access all move the number, so get at least two or three itemized quotes before deciding.
Do I need a permit to build a detached garage in Ottawa?
Yes, in almost all cases. The City of Ottawa requires a building permit for a detached garage over a certain size, and there are zoning rules around setbacks, lot coverage, and maximum height that a builder or you will need to check before pouring a foundation.
How long does a detached garage build usually take?
Once permits are approved, a typical detached garage takes roughly 4 to 8 weeks from breaking ground to a finished exterior, weather and crew scheduling permitting. Permit approval itself can add several weeks on top of that, so plan the timeline well before your target move-in date.
How do I judge the quality of a detached garage builder?
Ask to see two or three completed garages in person or in photos, check that footings are poured below frost depth (around 4 feet in this area), confirm they carry WSIB coverage and liability insurance, and get the warranty terms in writing before signing anything.

Last updated 2026-09-16