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FeaturedRenovation Contractors in Kitchener, Ontario

King Street Construction

Top Spot in Kitchener Today 5.00 (31 reviews)(519) 721-5618

King Street Construction

King Street Construction is a Kitchener-based general contractor specializing in additional dwelling units (ADUs), multi-family construction and major renovations. It also handles additions and commercial renovations and serves Kitchener-Waterloo and surrounding areas. For ADUs, it handles permits, utility servicing, foundation work and construction through finishes.

Business Highlights
  • It is a family-owned local business.
  • It is an HCRA-licensed builder (#B63947).
  • It offers a two-year warranty for setbacks, including labour and materials.

Service Area

Kitchener-Waterloo, Cambridge and surrounding communities.

Featured Local Business

King Street Construction is one of 11 renovation contractors ProsGrade lists in Kitchener, Ontario.

Featured
Featured on ProsGrade
Listing details

5 services listed, including Additional dwelling units (ADUs), Multi-family construction and project management and Commercial renovations. Open weekdays, closed on weekends. Rated 5.0 from 31 reviews.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

How King Street Construction compares with the other 10 renovation contractors on ProsGrade in Kitchener, using public Google ratings and review counts.

  • Ranks in the top half of the 11 Kitchener renovation contractors on ProsGrade by Google rating and review volume.
  • Rated 5.0 on Google, at or above the 4.9 average of other Kitchener renovation contractors on ProsGrade.
  • One of 11 Kitchener renovation contractors on ProsGrade rated 4.7 or higher from at least 10 reviews.

Services Covered

5 services
  • Additional dwelling units (ADUs)Three pre-designed models: 425 sq. ft. (1 bed/1 bath, electric mini-split heating/cooling); 850 sq. ft. (2 bed/1 bath, gas furnace/electric AC); 1,720 sq. ft. (860-sq.-ft. main floor + 860-sq.-ft. basement, 3 beds/2.5 baths, gas furnace/electric AC); custom builds.
  • Multi-family construction and project managementProjects from 2 to 10 units; purpose-built duplexes, multiplexes and small apartment buildings.
  • Commercial renovationsOffice fit-outs, interior office remodelling and commercial additions.
  • Home additionsMain-floor and second- or third-story additions; attached or detached garage conversions.
  • Major renovationsFull-home renovations, basement finishing and structural changes.

Reviews

What customers say

Customers praise Kevin and his crew for helpful guidance and clear communication. One customer says they have completed three ADUs together and are planning a fourth; another appreciated that the window crew set each new window in place before removing the old frame to limit heat loss.

Customer Reviews

Eric Martin

It's been almost a year since I wrote my first review for King Street Construction. When I wrote that review, my tenant had just moved into the first ADU Kevin and the team had built for me. Since then, they've completed the second and third ADUs. I moved into the second one in September and the third one will be occupied tomorrow. The first two ADUs were the one-bedroom model and the third one is the two-bedroom model. All three ADUs are in Guelph. No matter what random changes the city added to the permit from the one before or what the weather sent our way, Kevin adjusted and still finished in four months. In each instance Kevin and his team provided excellent service and delivered outstanding results. I think the best review is that we've complete three ADUs together and we are planning the fourth.
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Gareth Evans

These guys are fantastic too work with. Initial contact was smooth and easy. They arrived on time, answered all my questions and gave feedback and suggestions for my work. Quote was quick and accurate. One delay due to manufacturer but Kevin let me know as soon as he knew what was happening. And on the coldest week of the year they turned up, started work quickly and efficiently (Window replacement). Keeping in mind how cold it was they had each ne window at the opening before removing the old frame, minimizing heat loss in the home. Cleaning the site as they left for the day and respectful when entering and exiting the property. Could not have asked for a smoother install. I will reach out to them again if I need more work. Highly Recommended
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Jenn Wi

After a devastating water leak and damage we decided to enlist King Street Construction for a quote. From the moment we met Kevin we knew we wanted him and his crew to do our renovations. He was honest and sincere. Kevin and all of his crew were fantastic! Professional, Polite, knowledgeable and when we asked for options and opinions they were never too busy to give honest feedback. Kevin’s whole crew was professional and so easy to deal with. We can’t put into words how thrilled we are with the finished product and how everything turned out. We are thrilled to finally start using our new space! We HIGHLY recommend King Street Construction.
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Stephanie Langford

We met with Kevin to explore the possibility of building an ADU on my mother’s property. Our goal was to create a home that would bring us closer to her while also accommodating my mobility needs. From our first meeting, it was clear we were in capable, trustworthy hands. Kevin worked with us to thoughtfully customize one of his standard designs. We modified the main bathroom to include a walk-in shower in place of a bathtub, added a powder room, and converted a window into a sliding door. The adjustments were seamless and reflected a deep understanding of both form and function. Throughout the project, I truly appreciated the ongoing communication. Kevin kept us informed at every stage, which gave us peace of mind and confidence in the process. The professionals Kevin partners with are exceptional. We especially appreciated his recommendations to work with local vendors for flooring, tile, and cabinetry—each one delivered outstanding service and quality. It’s evident that everyone involved in the project takes great pride in their craft. Our new home is everything we had envisioned, and more. Our only regret is not having done this sooner. Kevin, thank you for your guidance, expertise, professionalism, and patience throughout the entire process. It was truly a pleasure working with you!!
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The Contractor Coach

One of the first things that comes to mind when I think about Kevin at King Street Construction is his integrity. He is focused on exceeding client expectations and delivering value while maintaining a community-driven approach. Kevin is leading the industry in the ADU space, making it about more than just construction he’s creating opportunities for families. Whether it’s providing a safe and comfortable space for aging parents or a place for kids to stay close to home, his work is truly impactful. Kevin isn’t just building great spaces; he’s bringing families closer together. If you’re considering building an ADU with King Street Construction, you can be confident your expectations will be exceeded across the board!
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Frequently Asked Questions

How does King Street Construction keep clients updated?

It provides weekly online project reports and says it will be upfront about possible timeline or budget changes.

Can King Street Construction adjust its pre-designed ADU models?

It can make minor changes, such as moving window and door locations.

What approvals might King Street Construction's ADU projects require?

All ADUs require a building permit, and some may need additional approvals or minor variances depending on the design. Requirements vary by municipality.

How does King Street Construction prepare multi-family project budgets?

It prepares budgets from the scope shown in available project documents. When design information is preliminary, it uses allowances and defined assumptions that are refined as drawings and trade pricing develop.