Commercial New Builds

From retail and healthcare spaces to multi-unit developments — we build with precision, compliance, and accountability.

Building for Business Performance

At MJ Ontario Constructions, we deliver turnkey commercial construction solutions that meet the highest standards of efficiency, safety, and structural integrity. Every commercial project we undertake adheres to the Ontario Building Code (OBC), maintains WSIB coverage, and is backed by comprehensive liability insurance. From project planning and permitting to interior build-outs, we manage every detail with precision and professionalism.

Sectors We Build

We serve diverse commercial sectors that demand performance, precision, and compliance.

Offices & Corporate

Professional spaces built for productivity, functionality, and a modern corporate image.

Fitness & Wellness

Studios, gyms, change rooms, acoustic treatments, and resilient flooring.

Medical & Dental

Hygienic, regulated facilities built with precision for healthcare operations.

Education & Institutional

Classrooms, labs, libraries, and student services with robust durability.

Restaurants & Hospitality

Custom-built dining and hospitality spaces optimized for efficiency and ambiance.

Retail & Showrooms

Visually appealing spaces designed to elevate customer experience and brand visibility.

Our Capabilities

We tailor our delivery model to your scope — whether it’s a fast‑track tenant improvement or a full design‑build engagement.

  • Design‑Build and Construction Management
  • Tenant Improvements and Adaptive Re‑Use
  • New Commercial Construction and Additions
  • Structural, Electrical, and HVAC Upgrades
  • Millwork, Finishes, and Brand Implementation
  • Permit Coordination and Code Compliance

Our Commercial New Build Process

1) Planning & Permitting

We start by assessing your project scope, securing permits, and aligning with OBC and municipal codes.

2) Foundation & Structure

Our team constructs a strong foundation and core framing, ensuring safety and long-term integrity.

3) MEP Systems Installation

Installation of advanced mechanical, electrical, and plumbing systems to meet industrial-grade demands.

4) Interior Finishing

Custom finishes that balance brand identity, functionality, and aesthetics for your business environment.

5) Final Inspection & Handover

We complete a full quality review, ensuring code compliance and readiness for occupancy.

Why Choose MJ Ontario Constructions

Efficient Turnarounds

We deliver projects on time — every time. Our streamlined construction process and hands-on management ensure fast, reliable results without ever compromising quality.


 

Licensed & Insured Professionals

As a fully licensed and insured contractor, MJ Ontario Constructions brings trusted expertise, compliance, and peace of mind to every build.


 

In-House Craftsmanship

Our in-house trades and skilled professionals guarantee consistent quality, precision detailing, and superior results on every project — commercial, industrial, or residential.


Comprehensive Project Management

From concept to completion, our dedicated project managers coordinate every detail, giving you a seamless and stress-free construction experience.


 

$10 Million Liability Coverage

Your investment is fully protected. We maintain up to $10 million in liability insurance, ensuring the highest level of safety and accountability across all job sites.


 

Quality Assurance & Warranty

We stand firmly behind our craftsmanship. Every project is backed by MJ Ontario Constructions’ workmanship warranty, reflecting our confidence in the quality we deliver.


 

How Commercial New Builds Differ from Residential

1) Stricter Regulations

Commercial buildings must meet additional standards for fire safety, accessibility, zoning, and structural load requirements — often exceeding those for residential homes.

2) Advanced Project Coordination

Commercial projects involve more disciplines — architects, engineers, inspectors, and tenants — requiring precise scheduling and communication.

3) High-Capacity Infrastructure

Mechanical, electrical, and plumbing systems in commercial buildings are designed for continuous use, scalability, and compliance with industrial-grade safety standards.

4) ROI and Functionality

While residential projects focus on aesthetics and comfort, commercial builds prioritize efficiency, operational flow, and long-term investment value.

Manjeet did our new vinyl flooring and handrails plus a deck for the stairs. He did an amazing job. He is good at communication and prompt in answering our questions. Got the work done quick. Would recommend him 100%
Sreekant VijaykumarSreekant Vijaykumar
19:46 04 Mar 25
Sharing my recent experience with MJ Ontario Constructions Inc We recently hired Manjeet and his team for remodeling our basement along with setting up a kitchen. I couldn't be happier with the results!From the initial design consultation to the final installation, their professionalism and attention to detail were exceptional. Manjeet is extremely humble and approachable, and he offered creative suggestions while always keeping our budget in mind. The quality of workmanship is excellent, and everything looks amazing.I highly recommend MJ Ontario Constructions Inc to anyone looking for a seamless and high-quality construction and renovation work.
Joel GJoel G
22:54 14 Feb 25
Installed a shower as I requested and on the agreed price and timeframe I am a happy customer they did a great job! Well done!
Deep SadhDeep Sadh
04:30 23 Jan 25
I recently had the pleasure of working with MJ Ontario Constructions to create a basement ADU (added a full kitchen, a new bedroom, and fire separation drywalls) in Ontario, and I couldn't be more satisfied with the experience and the outcome. From start to finish, Manjeet was a fantastic person to work with. He provided fair quotes and was incredibly flexible throughout the entire project.What stood out the most was his ability to listen to our needs, keep our budget in mind and suggest only what was absolutely required without cutting any corners. This honesty and reliability made the entire process stress-free. Manjeet also has a strong knowledge of the Ontario Building Code, which proved invaluable. His expertise helped us save a significant amount of money by demonstrating relevant OBC guidelines to the city's building official, which avoided the need to remove bathroom walls.We had pulled a permit for the basement ADU, and Manjeet took charge of scheduling inspections and worked seamlessly with the City of Windsor inspectors, ensuring that all inspections were passed without any issues. He interacted with the city several times regarding the permit, making sure that only the necessary work was done and that it was done correctly. He remained committed and focused until the very end, accommodating city inspection comments patiently until we received our occupancy permit.Moreover, I have referred Manjeet to three of my friends, and each one of them has been just as happy with his work as I am. This consistency in delivering exceptional service speaks volumes about his professionalism and dedication. He also made sure to engage the right licensed trades for electrical, plumbing, and other critical work, ensuring everything was done to the highest standard.A big shoutout to his crew as well, who were professional, skilled, and hardworking. They showed up on time, were respectful of our home, and contributed significantly to the success of the project.Overall, I highly recommend Manjeet and his team at MJ Ontario Constructions for any construction project. Their professionalism, expertise, and dedication are unmatched. Thank you for making our basement ADU project a success!
Vasanthan KARUNANIDHIVasanthan KARUNANIDHI
21:52 07 Aug 24
Manjeeth is committed person, he stick to his words, I got my work done on time which helps me to move in on scheduled date.
Sathishkumar SahadevanSathishkumar Sahadevan
23:03 06 Aug 24
Manjeet and his team did a great job for our house. We wanted to get few issues fixed with no time. Have approached many contractors, but Manjeet was very friendly, helpful and importantly did the work timely. I would recommend MJ Ontario Construction. Thank you.
karankaran
00:28 07 May 24
MJ was awesome to deal with. Very professional and great quality of work done. My basement was fully renovated including the entrance and the workmanship was the best you can get. I would definitely recommend this business to my friends and family. I was only recommended the work that was needed for my basement to look updated and it was completed in a very timely manner. They even helped me to move the heavy furniture aside which was a big relief.
Mount ZionMount Zion
23:45 14 Mar 24
⭐⭐⭐⭐⭐I cannot speak highly enough of the exceptional service and craftsmanship provided by this construction company. From start to finish, their team exhibited professionalism, expertise, and attention to detail that surpassed all expectations. Our project was completed on time, within budget, and the results are simply outstanding. I wholeheartedly recommend them to anyone seeking top-notch construction services.
BB
22:08 15 Feb 24
I contracted MJ Ontario Construction for significant home renovations. The team completely transformed the space - I was extremely impressed with the quality of work, craftsmanship, and ease of communication. Manjeet was always pleasant to deal with and accommodated my requests wherever possible. I will certainly be working with him again on future renovation projects. I highly recommend MJ Ontario Construction!
bradley trudeaubradley trudeau
02:56 23 Aug 23
I first want to say after calling every contractor in Windsor and surround area MJ construction was the cheapest rates, him and his team built me a custom pantry, which was the best quality I have ever seen. His professionalism and honesty along with his quality workmanship is what made me want him to do further work on my home. Want to say you won’t be disappointed hiring this company, I promise!Thanks again from Amanda and Bradley🙏🏼
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FAQ

Yes. Our team manages every aspect of permitting, zoning, and code compliance to ensure your commercial project progresses without delays.

Every project is assigned a dedicated project manager and site supervisor to oversee daily operations, timelines, and safety compliance.

Yes! We stand behind our craftsmanship. Our work is backed by a warranty to ensure your peace of mind and the long-term quality of your build.

We offer turnkey delivery — design, engineering, permitting, construction, MEP systems, finishing, and handover.

Absolutely! We are experienced in handling commercial builds of all sizes, from small offices to large-scale buildings. Our team of skilled professionals is equipped to meet the unique demands of commercial spaces.

Absolutely. All construction meets or exceeds OBC standards, including accessibility, fire safety, and structural integrity.

Every project is assigned a dedicated project manager and site supervisor to oversee daily operations, timelines, and safety compliance.

Yes. We specialize in medical clinics, offices, retail plazas, and other commercial spaces that require precision and regulatory compliance.

Depending on project size and complexity, timelines range from 6 to 18 months. We provide detailed schedules and updates throughout the process.

Absolutely! We work closely with you to understand your budget constraints and design a solution that maximizes your investment. Our team will help prioritize key elements of the project to ensure you get the best value without compromising quality.