About Good Day Building Supply
A family-owned yard, built to give Canada a better day.
Good Day Building Supply is a family-owned, Canadian building-materials retailer in Scarborough. We stock code-compliant, independently certified materials — and back them with service from real people who know the product — at prices that work for homeowners and trade alike.
Canadian-owned, people-first
We're a family-owned, Canadian business — a local yard putting money, jobs, and trust back into the community we're part of. When you buy here, you're supporting a Scarborough business that answers to its neighbours, not a distant head office. That matters more than ever right now, and we don't take it for granted.
Everyone deserves solid, code-compliant material without paying a premium for the privilege.
That belief shapes what we put on the shelf. We stock materials that meet Canadian code and carry independent certifications you can check — not house-label mystery product dressed up to look the part. Good material shouldn't be a luxury reserved for big-budget jobs, and getting it shouldn't mean choosing between quality and staying on budget.
We opened in 2023, and we're honest about being young. We'd rather grow with our community than pretend we've always been here. Every order, every account, every contractor who makes us their regular yard helps build the kind of local ecosystem where people look out for each other.
Our own line: NorthLine Signature
NorthLine Signature is our in-house product line — materials we spec, source, and stand behind ourselves. We started it for a simple reason: too often the choice was an overpriced name brand or an anonymous no-name with no accountability. NorthLine is the third option. It's held to the same certification standard as everything else on our shelf, priced for the project, and backed by the same yard you're buying it from. If a NorthLine product ever falls short, there's no manufacturer three time zones away to point at — it's on us, and we'll make it right.
What we stand for
Four things we don't compromise on.
Fair prices, held honestly
Retail pricing is anchored to the market, not inflated to discount later. What you pay is a fair price for certified material, whether you're buying one box or forty.
Service that answers
Call, email, or walk in and you get a straight answer from someone who knows the stock. No ticket queues, no runaround. If we don't carry it, we'll tell you where to look.
Code-compliant by default
We stock to Canadian code and back it with certifications you can check. The goal is that a homeowner never has to worry whether what they bought will pass, and a contractor never has to double-check us.
Canadian, and local about it
We're a Canadian-owned yard building something local. Every account and every job supports a Scarborough business reinvesting in its community — keeping the work, the jobs, and the trust close to home.
Certified, not just claimed
"Quality" is easy to say and hard to prove. We carry seven independent certifications across the catalog — third-party marks you can verify, covering low-VOC air quality, plumbing code compliance, electrical safety, and safety glazing. When a product is certified, we tell you which mark and what it means. When it isn't, we don't pretend it is.
Come have a good day at the yard.
Browse the catalog online, or reach out with a question — a real person answers. Buying for the trade? Open a NorthLine Pro account for account pricing and Net 30 terms.