Top general Contractor in st. thomas, ON
Home Renovations and Commercial Construction Since 1987
For over 35 years, MD Construction has delivered expert craftsmanship and reliable service. Whether you’re renovating your home or upgrading a commercial space, we bring your vision to life—on time and on budget.
Schedule Consultation
"*" indicates required fields
A+ Rating
4.8 Rating
Our Services
From renovations and exteriors to full additions and commercial build-outs, we bring expert craftsmanship and dependable service to every project.

Home Renovations
Bring your vision to life with full-service home renovation and upgrades that blend quality craftsmanship and functional design.

Additions & Extensions
Expand your home with seamless additions—sunrooms, garages, and full-room extensions—built to match your space and growing needs.

Exterior Upgrades
Boost curb appeal with expertly built decks, fences, siding, and more. We take care of every detail—no matter the season.

Trusted Since 1987
With over 35 years of roots in St. Thomas and Elgin County, MD Construction has built a reputation for quality, reliability, and care. Originally founded in 1987, the company is now proudly led by Tom Baines and Jocelyn McTaggart (Baine’s Contracting) — long time partners in life and business continuing the tradition of craftsmanship while bringing a fresh, personalized approach to every project.
Recent Projects
What Our Clients Say
Proven Process
Our streamlined process keeps your project on time, on budget, and stress-free. From permits to final finishes, we handle every detail—so you can feel confident every step of the way.
Step one
Discovery & Estimate
We begin by understanding your goals, budget, and vision. You’ll receive a clear, detailed estimate—no surprises, just a solid foundation for your project.
Step two
Design & Planning
Our team works with you to finalize layouts, select materials, and coordinate any permits or approvals, ensuring everything is ready to go.
Step three
Build & Execute
We manage the construction from start to finish—coordinating trades, keeping you informed, and ensuring every detail meets our high standards.
step four
Project Completion
Once the work is complete, we’ll walk through it together to make sure everything exceeds your expectations. Your satisfaction is our final step.
Proudly Serving St. Thomas, ON and Surrounding Areas
MD Construction is proud to call Port Stanley home—serving clients across St. Thomas, London, and the surrounding region. With local roots and a commitment to quality, we deliver dependable craftsmanship wherever your project takes us.
St. Thomas
Port stanley
aylmer
glencoe
Shedden
iona
dutton
rodney
west lorne
If you’re nearby but don’t see your town listed, reach out—we likely serve your area too.
Frequently Asked Questions
Still have questions? Get in touch.
We’re a full-service general contractor specializing in home renovations, additions & extensions, exterior improvements, commercial construction, and maintenance/repairs. From kitchen remodels and basement finishes to storefront upgrades, we deliver quality craftsmanship from start to finish.
Timelines vary based on project size and complexity. Small renovations may take 1–2 weeks, while larger builds or additions can span several months. We’ll walk you through a clear schedule before work begins.
Just schedule a consultation or give us a call. We’ll learn about your goals, take measurements if needed, and provide a detailed estimate outlining the scope and costs—no pressure.
Yes—we are fully licensed and insured. You can have peace of mind knowing your home or business is in the hands of certified professionals who meet all local building regulations.
Absolutely. We handle permits for you and offer design support to ensure your project aligns with your vision, local bylaws, and budget.
We stand behind our work. Most services include a workmanship warranty, and materials may be covered by manufacturer warranties too.
MD Journal
Learn what it’s like to work with a general contractor, including timelines, communication tips, and how to ensure your project stays on track and within budget.
Not sure whether to build a deck or patio? Compare costs, maintenance, lifestyle benefits, and resale value to choose the best backyard upgrade for your Ontario home.
Drafty windows and doors cost more than comfort. Learn how to spot issues, when repairs are enough, and when to repair or replace old windows and doors for long-term value.