Basement Renovation

Unlock the full potential of your home with professional basement renovation services from GDS Landscaping and General Contracting. We transform dark, underused basements into bright, functional living spaces that add comfort and value to your home. Serving Barrie, Innisfil, Orillia, Alliston, Bradford, and surrounding Simcoe County communities.

Your basement is the cheapest square footage you will ever add to your house — the foundation, roof, and structure are already paid for. What it needs is the right sequence of work: moisture dealt with first, a layout that works around the furnace and ductwork, permits and inspections in the right order, and finishes that feel like the rest of your home instead of an afterthought. With 12 years in the trade, that is exactly how we run every basement renovation in Barrie: one team, from the first measure to the final walkthrough.

Planning your project for this winter? Read our guide: Basement Renovations in Barrie: Why Winter Is the Best Time to Finish Your Basement.

Our Basement Renovation Services in Barrie & Simcoe County

Legal Basement Apartments / Secondary Suites
Turn your basement into rental income with a code-compliant secondary suite. We handle the full picture: permit drawings and applications, proper ceiling height and fire separation, egress windows, interconnected smoke and CO alarms, a separate entrance where the lot allows, a full kitchen, and a bathroom. A legal suite commands better rent, insures properly, and adds real resale value — an unpermitted one does none of those things.

Recreation Rooms & Family Rooms
The classic for a reason. Open family space for the kids, a big sectional, and room to actually live downstairs. We build around your ductwork and support posts so the layout feels planned, not squeezed in, with pot lights, proper heat runs, and flooring that can take real use.

Home Theaters & Media Rooms
Custom lighting on dimmers, soundproofing between the joists, a wet bar or kitchenette, and comfortable finishes designed for movie nights and game days. We rough in speaker and projector locations before the drywall closes, so there are no surface wires later.

Home Offices & Gyms
Dedicated space to work and train without taking over the kitchen table. Offices get proper lighting, sound insulation so calls stay quiet, and enough outlets where you actually need them. Gyms get the right flooring, ventilation, and mirror and equipment planning.

Basement Bathrooms & Laundry Rooms
Add a three-piece bathroom or move the laundry downstairs to free up the main floor. We handle the plumbing rough-in — including breaking and repouring concrete where drains need to go — tiling, waterproofing, and fixtures. A basement bathroom is the single biggest convenience upgrade in most finished basements.

Wet Bars & Kitchenettes
From a simple bar fridge and sink to a full kitchenette for guests or a suite, plumbed and finished to match the room around it.

Basement Renovation Gallery

See our recent basement renovation work across Barrie and Simcoe County:

Family Room

Bar Area

Our Basement Renovation Process

A finished basement is a small house built inside your house, and it rewards doing things in the right order:

1. Visit, measure, and design — we walk the basement with you, talk through how you want to use the space, check ceiling height, moisture, and mechanical locations, and sketch a layout that works.
2. Itemized quote — you get a written quote that spells out the scope: framing, electrical, plumbing, drywall, flooring, finishes. No vague allowances that balloon later.
3. Permits — where permits are required (and they are for most finished basements, and always for a legal suite), we prepare and submit the application and schedule inspections.
4. Moisture check and prep — any water issues are dealt with before a single stud goes up. Boarding over a damp basement is how good renovations go bad.
5. Framing and rough-ins — walls framed and bulkheads built around ductwork, then electrical, plumbing, and HVAC rough-ins, followed by the rough-in inspection.
6. Insulation, vapour barrier, and drywall — comfort and sound control go in, then board, tape, mud, and sand to a paint-ready finish.
7. Finishes — flooring, doors, trim, paint, bathroom tile and fixtures, and final electrical and plumbing trim-out.
8. Final inspection and walkthrough — we close out inspections, walk every room with you, and hand over a basement that is ready to use the same day.

Every basement we finish includes professional drywall — as a drywall contractor in Barrie, our crew hangs, tapes, and muds to a smooth, paint-ready finish.

It Starts Dry: Moisture and Waterproofing

More basements in Barrie and Simcoe County have had water than most owners realize — spring melt and heavy rain find the cracks. Finishing over a moisture problem traps it against your new framing and drywall, and the mould that follows can cost more than the renovation. That is why every GDS basement project starts with an honest look at the foundation: cracks, grading, window wells, and weeping tile. As waterproofing contractors ourselves, we can deal with issues from the exterior waterproofing side or interior drainage where that is the right call — before the first stud goes up, not after the first stain appears.

Legal Basement Apartments, Explained Simply

A legal secondary suite in Ontario has to meet building and fire code, and usually needs: a permit with drawings, minimum ceiling heights, an egress window in each bedroom big enough to escape through, fire-rated separation between the suite and the main home, interconnected smoke and CO alarms, and proper heating and ventilation. Many Barrie homeowners also add a separate side entrance, which tenants strongly prefer. The process takes longer than an informal finish because of drawings and inspections, but it is the difference between an asset and a liability — legal suites rent for more, are insurable, and can be disclosed when you sell.

Basement Ideas That Add Real Value

After hundreds of basement conversations, the layouts that age best share a few choices. An open family room anchored at the foot of the stairs gives the space a centre instead of a corridor. A roughed-in bathroom — drains and water lines in the concrete — is cheap during construction and very expensive later, so even owners not finishing a bathroom today usually rough it in. Pot lights on dimmers make low ceilings feel higher, and a large egress-style window on the brightest wall changes the whole feel of the room. If a future suite is even a maybe, we plan the kitchen wall and entrance route now so it can be added without demolition. And storage: build it into the plan — under-stair closets, a mechanical-room wall of shelving, and one unfinished storage room beat a finished basement with nowhere to put anything.

Soundproofing, Lighting, and Making It Feel Like Upstairs

Two things separate a basement that feels finished from one that feels like a basement: sound and light. We insulate between the joists with sound-absorbing insulation so footsteps and voices upstairs do not follow you down — and so a home theater does not shake the kitchen. Around the stairs and under living areas we can add resilient channel or double drywall where real quiet matters. For light, pot lights on dimmers spread even light that low ceilings need, a lighter paint palette keeps it bright, and wherever the lot allows, enlarging a window or adding a proper egress window does more for the feel of the room than any finish choice. Warm flooring underfoot — LVP or carpet over proper underlay — finishes the job of making downstairs feel like the rest of the house.

What Does a Basement Renovation Cost in Barrie?

Most full basement finishes we quote land between $35 and $75 per square foot, depending on finishes and whether a bathroom or kitchenette is included. A straightforward rec room with flooring, pot lights, and paint sits at the lower end; a legal apartment with a separate entrance, kitchen, bathroom, and fire separations sits at the higher end. The big cost drivers are plumbing (especially moving drains in concrete), ceiling height work, and finish level. You can try our cost calculator for a rough number, then call 647-767-1986 for an itemized in-home quote — free, written, and with no pressure.

Phasing a Basement Renovation to Fit Your Budget

A basement does not have to be finished in one pass. Many Barrie owners phase the project: phase one gets the bones done properly — permits, framing, electrical and plumbing rough-ins, insulation, and drywall — and phase two adds finishes like the bathroom tile, bar, or built-ins when the budget is ready. Phasing works because the expensive-to-change work (what sits inside the walls and under the concrete) is done once, in the right order, while the visible finishes can be upgraded room by room. What we advise against is phasing backwards: finishing surfaces first and opening walls later to add a bathroom or move a drain. Our staged payment schedule follows the same rhythm, so you are never paying far ahead of completed work, and we will happily quote your basement both ways — complete, and phased.

Why Renovate Your Basement with GDS?

• 12 years in the trade — full-service general contracting, including subtrade work for other builders across Simcoe County.
• One team, start to finish — framing, electrical, plumbing, insulation, drywall, flooring, tile, and paint coordinated by us. No chasing five trades on your own.
• Moisture handled first — we are waterproofing contractors too, so the basement is dry before it is finished.
• Permits done properly — applications, drawings, and inspections scheduled and closed out.
• Written, itemized quotes — the full scope priced before we start, so the budget holds.
• Local and reachable — based in Barrie and working across Simcoe County. You call, we answer, and we show up when we say we will.

Areas We Serve

We renovate basements across Barrie — including Ardagh, Holly, Inish-Shore, East Bayfield, Wellington Street, and the south-end subdivisions — and throughout Simcoe County: Innisfil, Springwater, Oro-Medonte, Essa (Angus), Bradford West Gwillimbury, New Tecumseth (Alliston), Collingwood, Wasaga Beach, Midland, and Orillia. See our full list of service areas.

Basement Renovation Mistakes We See (and Fix)

The expensive basement mistakes are almost always hidden ones. Finishing over a foundation that takes on water, then watching mould grow behind new drywall. Building a beautiful suite without a permit, then being told to open walls for inspection — or remove it — when the house is sold. Carpet laid directly on concrete that wicks moisture and smells by the second winter. A finished ceiling with no access panels, so the first plumbing repair means cutting drywall. Pot lights installed against insulation without proper boxes, creating cold spots and condensation. Every one of these costs more to fix than to prevent, which is why our process starts with moisture, permits, and rough-in planning before a single finish is chosen.

Basement Renovation Questions We Hear Often

Do I need a permit to finish my basement?
In most cases, yes — and always for a legal secondary suite, a new bathroom, or structural changes. We handle the application and inspections as part of the project and will tell you plainly what your project requires.

How long does a basement renovation take?
A typical full finish runs four to eight weeks depending on size, plumbing work, and whether it is a legal suite (permits and inspections add time). Your quote includes a realistic schedule.

Can we live in the house during the renovation?
Yes. Most of our basement clients do. We seal off the work area, control dust, and keep the stairs and work zone contained.

My basement has had water in the past. Can it still be finished?
Usually, yes — after the water problem itself is fixed. We assess the foundation first and recommend exterior or interior waterproofing where needed, so the new space stays dry.

How much ceiling height do I need?
Living space generally needs about 6’11” of finished ceiling height under the Ontario Building Code, with some allowances around beams and ducts. We measure and design around your ductwork to keep the ceiling feeling as high as possible, and we will tell you honestly if a legal suite is realistic in your basement.

Is a legal basement apartment worth it?
For most owners, yes. Legal suites rent faster and for more, are insurable, and add documented value at resale — and you avoid the risk of being ordered to remove an unpermitted unit.

Do you offer financing?
We keep it simple: staged payments through the project, and we accept all major payment methods. Call and we will walk you through how payment schedules work on our projects.

Frequently Asked Questions

Get a Free Basement Renovation Quote

Ready to transform your basement? Call us at 647-767-1986 or use our Get a Free Quote form. We will walk your basement with you, talk through the layout, and give you an itemized written quote — free, no pressure.

Planning more than the basement? We also renovate kitchens and bathrooms across Barrie and Simcoe County — see our kitchen & bathroom renovations.