★★★★★
LF Builders delivered a stunning patio. My backyard looks like it's from a magazine! Skilled, friendly, and highly recommended!Pary Gero Google Review
More seasons in your backyard
Sunrooms & Enclosures That Add Real Living Space
Serving Toronto and every city and town within 50 miles. Free on-site estimates, itemized quotes, and 50+ years behind every job.
- ★★★★★ 4.9 on Google & HomeStars
- 50+ years in business
- 30,000+ projects completed
- Fully insured & WSIB covered
- Free estimates
More seasons in your backyard
What we do
A good sunroom turns the two months you use your porch into eight, morning coffee in March, dinner outside in October, no mosquitoes in July. We design and build three-season rooms, screened porches and patio enclosures that look like they were part of the original house, not bolted on.
Every enclosure starts with the structure underneath. We check footings and framing first, because a sunroom is only as good as the deck or slab it sits on, and we build those too.
Recent enclosure projects include a cedar-lined three-season room overlooking a ravine lot in Aurora, a screened porch conversion in Richmond Hill's Oak Ridges, and a full porch-to-sunroom rebuild on a Bradford farmhouse.
Built to look original
Rooflines, siding and trim matched to your house so the addition doesn't read as an afterthought.
Three-season or screened
From simple screened porches to fully windowed three-season rooms with sliding glass.
Structure checked first
We verify (or build) the foundation under your enclosure, no sunrooms on rotten decks.
One contractor, whole job
Footings, framing, roofing, windows, electrical and finish, no juggling trades.
Enclosure problems we fix every week
If any of these sound familiar, you're exactly who we built this page for.
- Aging aluminum enclosures from the 80s that leak and sweat
- Screened porches built on decks that were never designed for the weight
- Sunrooms that bake in summer because glazing and ventilation were afterthoughts
- Porch roofs sagging where they meet the house
- Enclosures that were never permitted and need legalizing before a home sale
No surprises
How the project runs
Free design visit
We look at your space, sun exposure and structure, and talk about how you actually want to use the room.
Design & permit
Drawings, permit handling, and an itemized quote.
Structure
Footings and framing verified or built new, roof tied in properly to the house.
Enclosure
Windows, screens, doors, electrical, ceiling and finishes.
Walk-through & warranty
Final punch list together, and we stand behind the build.
Typical timelines
| Project | On-site time |
|---|---|
| Screened porch conversion | 1–2 weeks |
| Patio enclosure | 2–3 weeks |
| Three-season sunroom | 3–6 weeks |
| Sunroom + new deck/foundation | 5–8 weeks |
Our work
Recent projects
In their words
What homeowners say
★★★★★
Garrett did an amazing job on my porch. Great price, punctual, and no hidden costs. Couldn't be happier with the result!Eric Cohen Google Review
★★★★★
Well-organized and professional company. They exceeded our expectations and stuck to the budget. Highly recommend them!Julian A Google Review
★★★★★
Great work from start to finish! Punctual, friendly, and professional. I'd hire them again without hesitation!Val Google Review
★★★★★
Garrett at LF Builders was the most knowledgeable. The job was executed flawlessly, and the team exceeded my expectations!Private User HomeStars Review
★★★★★
LF Builders fixed our patio in just 4 days. The team was fast, efficient, and creative. We'll definitely call them again!Leon in Toronto HomeStars Review
Frequently asked questions
How much does a sunroom cost in the GTA?
Screened-porch conversions start around $25,000; full three-season sunrooms typically run $45,000–$90,000 depending on size, glazing and whether new foundation work is needed. Itemized quotes, always.
Do I need a permit for a sunroom or enclosure?
Yes, in virtually every GTA municipality, it's an addition to the building. We prepare drawings and handle the permit process with your town.
Three-season or four-season?
Three-season rooms (unheated, big glazing) give the best value in our climate. True four-season rooms need foundations, insulation and HVAC like any addition, roughly double the budget. We'll walk you through both honestly.
Can you enclose my existing porch or deck?
Usually, after we confirm the structure can take it. If the deck needs reinforcing we price that transparently rather than building on hope.
Will it match my house?
That's the goal. We match roof pitch, shingles, siding and trim profiles so the enclosure looks like it was always there.
How long does it take?
Most enclosures run 2–6 weeks on site depending on scope, after permits are issued.
Join in
What homeowners are saying about sunrooms & enclosures
Comments are powered by our community at renovation.reviews. One free account works on the forum and every LF Builders site.
Not ready for a quote?
Three-season or four-season? Ask homeowners who've lived with both on our community forum.
Close to home
Where we work
If you're within 50 miles of Toronto, you're in our service area. Crews are on the road daily across the GTA and beyond, including:
- Toronto
- North York
- Scarborough
- Etobicoke
- Newmarket
- Aurora
- Richmond Hill
- Vaughan
- Markham
- King City
- Stouffville
- Bradford
- East Gwillimbury
- Georgina
- Caledon
- Mississauga
- Brampton
- Oakville
- Burlington
- Milton
- Pickering
- Ajax
- Whitby
- Oshawa
Related services
Let's build it together
Ready to talk about your sunrooms & enclosures project?
Free on-site estimate, an itemized quote, and a straight answer about whether the job is worth doing.
Booked jobs currently receive a 14% project discount. Mention this page.