Best garage additions & conversions contractors in Ontario

★★★★★5 (185 reviews)score 94/100

Gracia Makeovers holds the highest composite score on this list, built on a perfect 5.0 rating across 185 reviews. Elijah and Daniel personally manage design and execution, balancing high-end finishes with realistic budgets and firm timelines. Homeowners describe premium pricing but say the lack of surprises or overruns makes it worth it.

• Magazine-worthy finishes on kitchens, baths, and basements
• Owners personally lead design consultation and project management
• Consistently on-time and on-budget with no cost surprises
• Transparent quoting and responsive communication throughout

Watch out: Pricing runs premium, though reviewers say the execution justifies it.

Services: custom finishes heated garages, detached garage construction, garage additions conversions

★★★★★4.9 (79 reviews)score 89/100

Toronto Garage Solutions is a pure garage specialist, turning bare concrete into organized, epoxy-finished storage space. Sikandar and Mujtaba's crew completes multi-day renovations with minimal disruption and a clean worksite, and reviewers note they'll return after the fact to adjust or move installed pieces. With 79 reviews at a 4.9 average, this is a solid, well-established track record.

• Clean epoxy flooring and finish work
• Efficient turnaround on multi-day garage renovations
• Willing to revisit and adjust installations after completion
• Organized shelving and slatwall storage systems

Services: garage additions conversions, detached garage construction, custom finishes heated garages, garage doors openers

★★★★★5 (49 reviews)score 88/100

D2 Build brings more than 30 years of experience to additions, porch enclosures, and full renovations, with particular strength in navigating permits, party walls, and the surprises that come with older East York and Leslieville homes. Jim, Steve, Peter, and Stephanie are named repeatedly for keeping jobs on budget and schedule. A perfect 5.0 rating across 49 reviews backs up the consistency.

• Deep experience with permits, party walls, and older-home conditions
• Transparent pricing with no cost overruns reported
• Named team across design, project management, and trades
• Clean, respectful worksite with post-project follow-up

Services: garage additions conversions, detached garage construction, custom finishes heated garages

★★★★★4.8 (86 reviews)score 86/100

Terzetto Homes pairs strong design consultation with daily project updates, drawing on more than 80 reviews that consistently praise coordinators like Taylor and Rodney for transparency and cleanliness. Design consultants Vivian and Abby are called out for suggesting layouts that fit how people actually live, not just how a space photographs. One unresolved billing dispute over $80,000 in unpaid fees is worth knowing about before you sign.

• Design team collaborates on layouts for daily usability, not just looks
• Project coordinators provide daily updates and clear timelines
• Worksite kept clean and protected throughout renovation
• Crew resolves issues quickly once flagged

Watch out: A significant billing dispute involving $80,000 in unpaid fees remains unresolved.

Services: garage additions conversions, detached garage construction

★★★★★4.8 (58 reviews)score 83/100

Grand Building and Contracting is a family-run outfit led by Adam, Jason, and Alex, handling everything from full detached garage builds to basement and exterior renovations. Reviewers point to clear communication from quote through handover and say the team still answers maintenance questions years after a project wraps. Permit delays have slowed a few jobs, but the crew picks up the pace once construction starts.

• Named, hands-on leadership (Adam, Jason, Alex)
• On-time and on-budget delivery reported consistently
• In-house design-build and permit expertise
• Thorough cleanup and long-term support after handover

Watch out: A few projects have been slowed by administrative permit delays.

Services: garage additions conversions, detached garage construction, custom finishes heated garages, garage permits design

★★★★★5 (20 reviews)score 83/100

Vicolo Construction is a smaller operation where Pirooz is on-site daily until the job is done, which shows up in reviewer comments about transparent budgeting and real-time problem-solving. With a perfect 5.0 rating, satisfaction runs high, though the review count of 20 is lower than the bigger names on this list. Clients say trades show up on schedule and issues get explained rather than hidden.

• Pirooz on-site daily through project completion
• Transparent budget set upfront, no hidden costs
• Pre-vetted, respectful trade network
• Reliable on-time completion

Watch out: Track record is based on a smaller pool of 20 reviews.

Services: detached garage construction, garage permits design, garage additions conversions

★★★★★4.9 (62 reviews)score 74/100

Padda Construction Group moves quickly on quotes, often within 24 hours, and Jugraj's hands-on project management earns praise for follow-through on renovation and garage work. Reviewers describe transparent, upfront contracts and skilled subcontractors for tile, electrical, and glass work. Pricing runs on the higher side, and the team is reportedly selective about taking on smaller residential jobs.

• Quotes typically turned around within 24 hours
• Transparent contracts and pricing signed upfront
• Skilled subcontractors for tile, electrical, and glass
• Jugraj Padda's direct, hands-on project leadership

Watch out: Pricing runs higher than competitors, and smaller jobs may be turned down.

Services: garage additions conversions, detached garage construction

★★★★★5 (11 reviews)score 75/100

MTP Construction Group has a perfect five-star record, though it's built on just 11 reviews so far. Reviewers describe Michael, the owner, coordinating trades personally on projects ranging from custom garages to 2,500-square-foot additions, with clean worksites and no pricing surprises. It's a smaller sample size than most on this list, but every review to date has been strongly positive.

• Owner Michael on-site daily coordinating trades
• Full-service: design, permits, and multi-trade coordination handled in-house
• Transparent pricing with no reported surprises
• Track record includes large additions and custom garage builds

Watch out: Reputation is based on only 11 reviews so far, all five-star.

Services: detached garage construction, custom finishes heated garages, garage permits design, garage additions conversions

★★★★★4.5 (947 reviews)score 81/100

NewAge Products is the product route rather than a build crew: garage cabinets, shelving, and outdoor kitchen units that reviewers say hold up well once installed. Named support staff like Karen Cubillan and Farhan Qureshi step in to resolve defective parts or shipping mix-ups, and with 947 reviews this is by far the largest sample on this list. Getting to that support can take patience, with reviewers flagging delivery tracking issues and busy phone lines before problems get sorted.

• Durable cabinet and appliance construction
• Named staff who follow through on warranty claims and replacements
• Largest review base on this list at 947 reviews
• Sources parts across multiple warehouses to resolve issues

Watch out: Delivery tracking and initial customer service can be inconsistent before issues get resolved.

Services: garage additions conversions, detached garage construction

★★★★★4.5 (18 reviews)score 68/100

BRIKS Design-Build Group draws mostly five-star feedback for fair quoting and a willingness to adjust plans mid-project without pushback. Set against that, a small number of reviews, two older and one more recent, describe flooring defects and slow response to fixing them. With only 18 reviews total, that mixed signal is worth weighing before committing to a larger scope.

• Accommodates plan changes mid-project
• Quoted prices reported to match final costs
• Skilled trades execute work to spec
• Delivers complex renovations on schedule

Watch out: A handful of reviews describe flooring defects and slow follow-up on repairs.

Services: garage additions conversions, detached garage construction

★★★★☆4.4 (30 reviews)score 71/100

RS Homes gives clients direct access to owner Ramtin throughout a project, which reviewers credit for quality finishes and follow-through on warranty issues after handover. Most feedback across 30 reviews is positive on build quality and communication once a project is underway. A minority of reviewers report a rougher initial inquiry experience, with pricing that wasn't fully clear upfront.

• Direct access to the owner for decisions and disputes
• Established trade network on active sites
• Major projects completed on schedule
• Warranty and post-project support follow-up

Watch out: Some reviewers found the initial inquiry process less smooth, with pricing not fully clear upfront.

Services: custom finishes heated garages, detached garage construction, garage additions conversions

★★★★☆4.2 (5 reviews)score 62/100

Home Services at The Home Depot connects homeowners to a licensed, insured contractor network for garage construction and conversion work, backed by a minimum $1,000,000 liability policy. Review evidence here is thin, just a handful of ratings, so there isn't much detail yet on specific project outcomes. The Home Depot backing offers a baseline of accountability that independent contractors don't always spell out.

• Licensed and insured contractor network
• Minimum $1,000,000 liability coverage

Watch out: Review volume is very limited, so there's little detail yet on actual project quality.

Services: detached garage construction, garage additions conversions

★★★★★4.5 (8 reviews)score 70/100

Luxe Garage Design specializes in epoxy and polyaspartic flooring that reviewers say holds its finish for years without fading, usually delivered on time and with a spotless worksite. Feedback is mostly positive across 8 reviews, but one recent complaint describes a technician showing up two hours early after a confirmed cancellation, raising questions about scheduling practices. It's a smaller sample, so weigh that alongside the strong finish quality reviewers describe.

• Epoxy and polyaspartic coatings built for long-term durability
• High attention to detail on finish work

Watch out: One recent review describes a scheduling mix-up involving an unconfirmed appointment.

Services: custom finishes heated garages, garage permits design, detached garage construction, garage additions conversions

★★★★★4.5 (2 reviews)score 54/100

This Home Depot Home Services listing offers licensed, WSIB-certified contractors with garage door installation among a broader home services menu. The 4.5 rating suggests solid satisfaction, but it's drawn from just 2 reviews, so there's not much to go on yet. The Home Depot affiliation brings standardized licensing and insurance to the table.

• Licensed and insured through Home Depot's network
• WSIB certified

Watch out: Only 2 reviews are on record, so there's very little project detail to evaluate.

Services: detached garage construction, garage additions conversions

★★★★★4.5 (2 reviews)score 54/100

Operating out of North York, this Home Depot Home Services listing offers the same licensed, WSIB-certified contractor backing and $1,000,000 liability coverage as its sister locations. The 4.5 rating comes from just 2 reviews, so there's minimal track record to assess beyond the credentials. It's a reasonable starting point if you want Home Depot's insurance and licensing standards behind the work.

• Licensed and insured with WSIB certification
• $1,000,000 liability coverage

Watch out: Only 2 reviews are available, so there's little independent feedback on actual project outcomes.

Services: detached garage construction, garage additions conversions