Building supply for trade & home
Materials in stock. Projects on schedule.
Bathroom, flooring, doors, hardware and more — same-day yard pickup or delivery to the site.
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Everything for the project, room by room.
- Bathroom
- Plumbing
- Doors & Trim
- Electrical
- Flooring
- Hardware & Fasteners
- Tools
- HVAC & Ventilation
Best sellers
What the GTA is buying this week.
Best seller
Interior Door
2-Panel Square Hollow Core Interior Door Slab — Smooth Primed White
From $72.99
View optionsBest seller
Interior Door
1-Panel Bevelled Shaker Hollow Core Interior Door Slab — Primed White
From $74.99
View optionsBest seller
Plumbing Fittings
LESSO ABS Hub Coupling — Hub × Hub DWV Connector, cUPC Certified
From $0.69
View options
Plumbing Fittings
LESSO ABS 90° Elbow — Short-Turn Hub × Hub DWV, cUPC Certified
From $0.99
View options
Plumbing Fittings
LESSO ABS Trap Adapter — Hub × Slip-Joint with Nut DWV, cUPC Certified
$1.79
View optionsWhy shop with Good Day Building Supply
- Certified to Canadian code
- Local delivery within 100km
- Free shipping over $100 CAD
- Google reviews
NorthLine Signature
Our in-house line.
Spec'd, sourced, and stood behind by us — the quality of a premium brand, priced for the project.
- Signature
4PL3CCT
Luvelle 4″ Ultra-Thin LED Pot Light — Canless Wafer Downlight, Energy Star, ETL, IC Rated
Some ceilings just won't take a normal pot light — the joist sits too shallow, the bay'...
View product: Luvelle 4″ Ultra-Thin LED Pot Light — Canless Wafer Downlight, Energy Star, ETL, IC Rated - Signature
L702SNPA
Vellum Hardware Quadra Door Lever — Square Rosette, Keyed, Privacy, Passage & Dummy
Some doors want a curve. The Quadra doesn't. It's a flat, straight interior door lever ...
View product: Vellum Hardware Quadra Door Lever — Square Rosette, Keyed, Privacy, Passage & Dummy - Signature
POPDSN
Cascena Oversize Pop-Up Sink Drain with Overflow — 1-1/4″, Push-Button
Most pop-up drains are an afterthought — a small cap dropped into a raw hole. The Casce...
View product: Cascena Oversize Pop-Up Sink Drain with Overflow — 1-1/4″, Push-Button - Signature
L802SNPA
Vellum Hardware AeroCurve Door Lever — Keyed, Privacy, Passage & Dummy Functions
Reach for it and you feel the difference before you see it. The AeroCurve is an interio...
View product: Vellum Hardware AeroCurve Door Lever — Keyed, Privacy, Passage & Dummy Functions
Get inspired
Real projects, shoppable down to the last fixture.
Shop the look
A small bathroom, fully refreshed
Vanity, fixtures, and finishes from the bathroom department, ready to add to cart.
Shop bathroomBaseboard & Trim
The last 10% that finishes the room
Match your flooring with baseboard and matching casing, all from one department.
Shop BaseboardRoom by room
A whole hallway, one door at a time
Slabs for straight swaps and jamb kits for full openings, ready to add to cart.
Shop Doors