Sunroom addition cost in Montreal, CA
Lifestyle upgrade
In Montreal, CA, a midrange sunroom addition typically costs around C$61,700 — about 10% below the national benchmark of $50,000, reflecting local labour and material prices. On average it recoups about 50% of its cost at resale.
Budgeting for a sunroom addition in Montreal, CA means planning for Canada pricing. At a smart-refresh (budget) finish you would expect around C$37,000, rising to about C$117,100 for a luxury finish. Because a sunroom addition recoups roughly 50% at resale, the net cost after resale in Montreal, CA works out to about C$30,800 — the part you don't get back when you sell.
Montreal is the most affordable of Canada's big metros for renovation, with lower labour rates than Toronto or Vancouver, though permitting and language-of-trade logistics can add time.
Local cost factors in Montreal, CA
- Lower labour rates
- Montreal's trade rates are the lowest of Canada's big three metros, keeping totals down.
- Borough permitting
- Permitting is handled at the borough level and can add time; requirements vary across the island.
- Plex housing stock
- Iconic duplex and triplex 'plexes' with exterior staircases create common but distinctive renovation patterns.
| Estimated cost in Montreal, CA | C$61,700 |
| Typical range | C$52,400 – C$70,900 |
| Resale value added | C$30,800 |
| Cost recouped (ROI) | 50% |
| US national average (for comparison) | $50,000 |
Sunroom addition cost by finish level in Montreal, CA
| Finish level | Estimated cost | Resale value added | Recouped |
|---|---|---|---|
| Smart refresh (budget) | C$37,000 | C$20,700 | 56% |
| Balanced upgrade (midrange) | C$61,700 | C$30,800 | 50% |
| Luxury finish (upscale) | C$117,100 | C$43,300 | 37% |
How Montreal, CA compares
A midrange sunroom addition across Canada markets, for comparison — same project, local pricing:
| City | Midrange cost | Recouped |
|---|---|---|
| Montreal, CA | C$61,700 | 50% |
| Toronto, CA | C$71,900 | 50% |
| Vancouver, CA | C$76,700 | 50% |
| Calgary, CA | C$66,400 | 50% |
| Ottawa, CA | C$60,300 | 50% |
What's included
- Foundation or reinforced slab
- Framing and large glazed walls/roof
- Insulation and climate control (four-season)
- Flooring, electrical and lighting
- Permits and professional fees
Pro tip: A four-season room that ties into the home's heating and finishes reads as real living space and returns more; a three-season or screened room is cheaper but recoups noticeably less.
What affects the cost of a sunroom addition
- Three- vs four-season
- Insulation, glazing and climate control make a four-season room cost — and return — more than a screened one.
- Foundation
- A slab or reinforced foundation for a heated room costs more than a simple deck-style base for a three-season room.
- Glazing extent
- More glass and higher-performance windows raise both cost and comfort.
- HVAC tie-in
- Extending heating and cooling into the room is what makes it count as living space — and adds cost.
Estimate your sunroom addition in Montreal, CA
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Sunroom addition in Montreal, CA: common questions
How much does a sunroom addition cost in Montreal, CA?
A midrange sunroom addition in Montreal, CA costs about C$61,700, typically C$52,400–C$70,900. A budget (smart-refresh) finish runs around C$37,000, and an upscale (luxury) finish around C$117,100.
Is a sunroom addition more expensive in Montreal, CA than average?
No — in Montreal, CA it runs about 10% below the national benchmark of $50,000, helped by lower labour rates.
What ROI does a sunroom addition have in Montreal, CA?
About 50% of the cost is typically recouped at resale — roughly C$30,800 in added value, for a net cost of about C$30,800 after resale.
How much does a sunroom cost in 2026?
About $50,000 on average, from roughly $25,000 for a three-season room to $80,000+ for a fully insulated four-season room.
Does a sunroom add value?
It recoups around 50% of its cost — a four-season room that counts as living space returns more than a three-season or screened one. Treat it as a lifestyle addition.
Other locations
How to read these Canada figures. The cost is the US national midrange benchmark adjusted by a Montreal, CA cost multiplier (0.90×) and shown in CAD. The “% recouped at resale” is a national (US-derived) Cost-vs-Value benchmark applied to the local cost — it is not a locally measured resale figure, and real recovery varies by Canada market conditions. These are planning estimates only; confirm with local contractor quotes and a local agent. Not financial or real-estate advice. Reviewed June 2026. See our full methodology →
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