How much does it cost to finish a basement rec room in Toronto?

Hi there! I'm Chris, a General Contractor with 25 years in residential renovations.

From the photo you shared, you've got a fantastic clean canvas! Your basement has a nice walk-out sliding door on the right, some early rough framing around the stairs, concrete foundation walls, and open joists with exposed heating and cooling ducts.

Finishing a basement this size is a multi-trade job. To build a solid, reliable estimate, we'll walk the scope step by step, biggest and most complex trades first:

1. Framing, Insulation & Drywall (perimeter walls, partitions, and ceiling)
2. Electrical & Lighting (recessed lighting, outlets, switches, and code compliance)
3. Flooring & Baseboards (slab prep, underlayment, floor covering, and trim)
4. HVAC & Ventilation (framing bulkheads around ducts, adding heat registers/returns)
5. Doors & Trim (hanging doors for storage/utility areas)
6. Painting (walls, ceilings, and trim)
7. Smoke & CO Detectors (required safety upgrades)
8. Permits & Project Management (municipal approvals and trade coordination)

To start the walkthrough and set our main quantities and design direction, a few quick questions:

Question: What is your postal code?

Question: Roughly what are the dimensions (length and width) or total square footage of the basement area you want to finish?

Question: Which ceiling style do you prefer?

• Drywall with framed bulkheads — a classic finished look
• Drop/ suspended ceiling — easy access to pipes and wires
• Exposed painted joists — an industrial/loft style

Question: Which flooring would you like installed?

• Luxury Vinyl Plank (LVP) — durable and water-resistant
• Carpet — warm and cozy for a rec room
• Laminate — a budget-friendly wood look
• Engineered hardwood — a premium real-wood look

Thanks! That gives us a solid foundation: a 300 sq. ft. rec room (20ft x 15ft), a clean modern finished drywall ceiling with custom bulkheads framing the ductwork, and durable Luxury Vinyl Plank (LVP) flooring.

Now let's look at the existing conditions and the key municipal and safety triggers for Toronto (M5V). Locally, the age of the structure and the concrete's moisture performance are big factors that shape our structural, insulation, and moisture-proofing methods.

A few details so we can dial in the framing, moisture protection, and electrical design:

Question: Roughly what year was the home built?

• 1990 or newer
• Between 1980 and 1989
• 1979 or earlier

Question: Is this a single-family house, a duplex, or a townhouse?

• A single-family detached house
• Duplex
• Townhouse (condo-corporation or freehold)

Question: Has this basement ever seen leaks, moisture, dampness, or slab sweating?

• No — it stays completely dry year-round
• Yes — occasional minor dampness or sweating
• Yes — active or past leaks/ water intrusion

Question: Close in the under-stairs area as a storage closet with a door, and drywall both sides of the stair wall?

• Yes — drywall both sides and build a storage closet with a door
• Only drywall the stair wall; leave the under-stairs open
• No — leave the stairs area fully open as it is

Question: For the electrical layout, about how many recessed puck lights would you like, and do you want a dedicated TV wall-outlet setup (conduit, power, cable)?

Your project estimate

Project summary

Complete finish of a 20ft x 15ft unfinished basement in a post-1990 single-family detached home in Toronto. Covers perimeter wall framing/insulation, a drywall ceiling with bulkheads, new electrical branch circuits with 8 LED lights and 8 outlets, an under-stairs closet with a hollow-core door, LVP flooring with vapour underlayment, paint, and City of Toronto permit administration.

Estimate range

$18,505 - $28,940 This is a starting ballpark, not a final price.

Estimated work

Item	Details	Range
Site Protection & Floor Prep	Protect the walking paths, sliding glass doors, and adjacent transitions with temporary floor protection and drop sheets.	$98 - $195
PM & Trade Coordination	GC coordination, sequencing, schedule management, trade handoffs, and inspection sequencing for a multi-trade basement finish.	$1,805 - $2,755
Wall & Soffit Framing	Frame wood-stud perimeter walls, the stairway framing, the closet partition, and the custom drywall bulkheads/soffits around the HVAC ductwork.	$2,910 - $4,465
Insulate the Walls	Install R20 fibreglass batt insulation in all perimeter stud cavities.	$1,820 - $2,875
Vapour Barrier & Air Sealing	Install a continuous 6-mil poly vapour barrier on the perimeter walls, fully taped and sealed.	$860 - $1,340
Electrical Rough-In & Outlets	Rough in the branch wiring, boxes, and circuits for 8 recessed slim LEDs, a closet light, 8 outlets, switches, and 2 smoke alarms.	$1,280 - $1,970
Electrical Rough-In Materials	Supply the rough-in materials — branch-circuit wiring, junction boxes, and standard breakers.	$300 - $450
Extend the HVAC Ducts	Extend HVAC ducting off the existing trunk line, roughing in 2 heat supply registers and 1 return-air grille.	$815 - $1,300
Building Permit Filing	Prepare and file the City of Toronto Building Permit application, coordinate with inspectors, and represent the GC at the rough-in inspection.	$540 - $880
Electrical Permit Filing	Prepare and file the Electrical Permit with the city, coordinate inspections, and manage the rough-in review.	$410 - $660
Drywall Install & Level 4 Finish	Install 1/2 inch drywall on the walls and ceiling, 5/8 inch fire-rated drywall under the stairs, then tape, mud, and sand to a Level 4 finish.	$1,835 - $2,805
Under-Stairs Closet Door Install	Install 1 prehung hollow-core interior door for the under-stairs closet, complete with a passage latch set.	$290 - $485
LVP Flooring Install	Install the owner-supplied Luxury Vinyl Plank (LVP) over the concrete slab.	$1,760 - $2,715
Supply Acoustic Underlayment	Supply premium moisture-mitigating acoustic underlayment.	$175 - $275
MDF Baseboard & Trim Install	Install MDF baseboards around the room perimeter (70 lft) and mitered casing around the new closet door.	$575 - $955
Prime & Paint Walls	Prep, prime, and roll two coats of eggshell on all the new partition and perimeter walls (560 sqft).	$430 - $660
Prime & Paint Ceiling	Prep, prime, and roll two coats of flat ceiling paint on the drywalled ceiling and bulkheads (300 sqft).	$200 - $310
Paint Baseboards & Closet Door	Prep, prime, and paint the MDF baseboards and the closet door with semi-gloss trim paint.	$40 - $67
Electrical Trim & Fixtures	Install 8 recessed slim LED puck lights, switches, outlets, plates, and finish wiring connections at the breaker panel.	$1,385 - $2,125
Supply Closet Light Fixture	Supply 1 basic utility ceiling light for the under-stairs closet.	$50 - $80
Interconnected Smoke & CO Alarms	Install and test two interconnected hardwired smoke/CO combination alarms to meet local building code.	$320 - $520
Final Permit Closeout & Inspections	Prepare, schedule, and attend the final building and electrical inspections with City of Toronto inspectors to close out the permits.	$95 - $190
Post-Construction Clean & Disposal	Clean the whole basement, including window wipe-down and floor sweeping, and haul the debris away in a 14-yard bin.	$590 - $930

Cost summary

Category	Range
Materials	$4,815 - $8,475
Labour	$13,680 - $20,565
Total	$18,505 - $28,940

What is included

• Protect the walking paths, sliding glass doors, and adjacent main-floor transitions with drop sheets and floor protection.
• Erect 2x4 wood-stud perimeter walls set slightly off the concrete foundation, frame the structural stairway walls on both sides, and frame partitions for the new under-stairs closet. Frame custom soffits/bulkheads around all the exposed heating and cooling ducts.
• Install R20 fibreglass batt insulation in all perimeter stud cavities, plus a 6-mil polyethylene continuous vapour barrier on the warm side, taped and sealed to code.
• Rough in new branch circuits from the main panel, including wiring for 8 recessed LED slim puck lights, 1 under-stairs closet light box, 8 perimeter outlets (spaced to the Canadian Electrical Code), switches, and 2 interconnected hardwired smoke/CO alarms.
• Extend the HVAC ducting off the existing trunk line, roughing in 2 heat supply registers and 1 return-air grille for proper climate control and ventilation.
• Schedule and pass the trade rough-in inspections (building framing, electrical, and mechanical/HVAC) with the City of Toronto.
• Install 1/2" drywall on the walls and ceiling, including 5/8" fire-rated drywall on the underside of the stairs where code requires. Tape, three coats of compound, and sand to a Level 4 paint-ready finish.
• Supply and hang 1 prehung 24" or 30" hollow-core interior slab door for the under-stairs closet, with casing and a passage latch set.
• Clean the concrete slab, lay premium moisture-mitigating acoustic underlayment, and install Luxury Vinyl Plank (LVP) throughout the 300 sqft main space.
• Install MDF baseboards around the room perimeter (70 linear feet) and case around the under-stairs door.
• Prime all raw drywall and trim, then apply 2 coats (eggshell on walls, flat on ceiling, semi-gloss on trim and doors).
• Install the slim LED puck lights, closet light, receptacles, decorative switches, decorative faceplates, and complete the final wiring at the main breaker panel.
• Schedule and pass the final building and electrical inspections with the City of Toronto to close the permit.
• Do the full post-construction cleanup, window wipe-down, floor sweeping, and haul all the debris away in a 14-yard roll-off bin.

Permits or inspections

Item	Why it may be needed
Building Permit (Basement Finishing)	The City of Toronto requires a building permit to create finished living space, framing, and insulation updates.
Electrical Permit (New Circuits)	Required to install the new branch circuits, receptacles, light fixtures, and smoke detectors.

Possible add-ons

These items are not included in the estimate range above. They may change after an on-site review.

Item	Trade	Possible range	What would confirm it
Apply self-leveling subfloor compound if the concrete slab is found out-of-level.	Flooring Specialist	$350 - $550	An on-site floor-flatness check shows the slab varies more than 3/16 inch over 10 feet.
Apply a topical sub-slab moisture-mitigation system.	Flooring Specialist	$450 - $750	An on-site calcium-chloride moisture test shows a vapour-emission rate over 3 lbs / 1,000 sqft / 24 hours.
Upgrade the electrical panel or add a subpanel to fit the new circuits.	Electrician	$950 - $1,450	The breaker-panel inspection shows zero open breaker spaces or not enough main-service capacity to add the new basement circuits.

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