We Design It. We Build It.
Home Additions in Thunder Bay, Built Start to Finish
Love your home but running out of room? SRL Contracting designs, permits and builds your addition, so you get the space you need without moving or managing a single trade.
- PERMITS & DRAWINGS
- FULLY LICENSED & INSURED
- RED SEAL CERTIFIED TRADES
- LOCALLY OWNED IN THUNDER BAY
More Space, Same Neighbourhood
Your family has grown. Your parents may be moving in. Maybe you need a real home office, or a kitchen that fits everyone at once. Whatever the reason, you've outgrown your space but not your home.
Moving means a new mortgage, realtor fees, land transfer tax and leaving a street you love. A home addition gives you the room you need and keeps everything else that works. It also adds lasting value to your property.
At SRL Contracting, we build home additions in Thunder Bay and the surrounding area for families who want it done right the first time. We handle the drawings, the permits, the build and the finishing, so you deal with one team from the first meeting to the final walkthrough.
Home Additions We Build
Second storey additions
Build up instead of out. Ideal for smaller lots, and it keeps your yard intact.
Single-storey and rear additions
Extend your main floor for a bigger kitchen, family room or dining area.
Learn more about single-storey and rear additionsPrimary bedroom suites
A private bedroom with an ensuite and walk-in closet, away from the busy parts of the house.
In-law suites and ADUs
Comfortable living space for aging parents or adult children, with its own entrance if needed. We also build ADUs (accessory dwelling units): fully self-contained units with their own kitchen, bathroom and entrance, for family or rental income. ADUs are built to Building and Fire Code requirements and permitted with the City.
Garage additions
An attached garage, or a garage with living space above it.
Learn more about garage additionsSunrooms and four-season rooms
Bright, insulated space you can use through a Thunder Bay winter, not just in July.
Not sure which type fits your home and lot? That's what the first consultation is for.
Book Your ConsultationHOW IT WORKS
We Handle Everything, Start to Finish
Most homeowners worry about the same things: who draws the plans, how the permit works, and who's accountable if something goes wrong. With SRL, the answer to all three is us.
Consultation and site visit.
We walk your property, listen to what you need, and talk through the budget and options honestly. You'll know early whether your idea is realistic.
Design and drawings.
We prepare the construction drawings for your addition in-house. You see the layout before anything is built and can make changes on paper.
Permits and approvals.
We prepare and submit the building permit application to the City of Thunder Bay/Municipality and deal with the building department for you. If your lot needs a zoning review, we guide you through that too.
Detailed quote and schedule.
You get a clear, itemized quote and a realistic timeline before work starts.
Build and finish.
Our crew handles everything from the foundation, framing and roof to the tie-in with your existing house, built for our northern winters. Then we complete the exterior finishing, electrical, plumbing, insulation, drywall, flooring and trim so the new space matches the rest of your home.
Final walkthrough.
We walk the finished addition with you and fix anything that isn't right.
Why Thunder Bay Homeowners Choose SRL Contracting
One team, full accountability. Design, permits and construction under one roof means nothing falls between the cracks.
Built for northern Ontario. Frost-protected foundations, proper insulation and air sealing, and roofs designed for heavy snow loads.
A seamless match. We match rooflines, siding and interior finishes so the addition looks like it was always there.
Clear communication. You'll always know what's happening, what's next, and who to call.
Local and established. 10+ years building in Thunder Bay, with a crew you'll get to know. About SRL
Recent Home Additions
View all projectsPlanning More Than an Addition?
Many addition projects pair well with other work. We also do kitchen and bathroom renovations, basement and interior renovations, and decks and porches, so your whole project stays with one team.
QUESTIONS
Home Addition FAQs
Every addition is different. Size, foundation type, number of storeys, plumbing and finish level all change the price. After a site visit we give you a detailed, itemized quote so there are no surprises.
Yes. Additions in Thunder Bay require a building permit, and some lots also need a zoning review for setbacks or lot coverage. SRL prepares the drawings and permit application and deals with the City for you.
In many cases, yes. The City of Thunder Bay allows additional dwelling units in many residential zones, but not every lot qualifies. A self-contained unit needs a building permit and must meet Building and Fire Code requirements for separation and exits. We check your lot's zoning, design the unit, and handle the permit and build.
Most additions take 3-6 months of construction, plus 4 weeks for design and permits beforehand. We give you a realistic schedule before work begins and keep you updated as it progresses. Size and complexity can vastly change timelines.
In most cases, yes. We build the addition first and open into the existing house as late as possible to limit dust and disruption.
Foundation work is best done before the ground freezes, but once an addition is framed and closed in, interior work continues through the winter. Planning in fall or winter often means you're first in line for spring construction.
That's the goal on every project. We match rooflines, siding, windows and interior finishes so the new space blends in, inside and out.
We provide the construction drawings needed for your permit in-house. For complex or larger projects, we can coordinate with an architect or engineer as required.
For many families, yes. You avoid realtor fees, land transfer tax and moving costs, keep your neighbourhood, and get a space designed exactly for how you live.
Ready to Make Room?
Tell us about your home and what you need. We'll set up a site visit, talk through options and give you an honest picture of cost and timeline. No pressure, no obligation.
Serving Thunder Bay
