Three season sunrooms in Rancho Cucamonga CA - a room that stays dry and closes right
Patio sitting empty because of wind, dust or bugs? We close it in with glass or screens so it gets used most of the year.
What is a three season sunroom, and is it right for my patio?
A three season sunroom closes in a patio or porch with windows or screens and isn't heated or cooled, so in Rancho Cucamonga it turns a patio you avoid into a room you can use most of the year.
Most people who call about this have a patio or deck they barely use because of sun, wind, dust or bugs, and they want a room without paying to heat and cool it. The price mostly comes down to how big the room is, how it's finished and whether it needs a new foundation or can sit on what you already have. The schedule turns on that same foundation question, plus a permit when your address needs one, and the written estimate gives you the price for your room.
- Licensed and insured.
- Free on-site estimates.
- Replies within 1 business day.
Three season sunroom ideas
How we build a three season sunroom
First I check what the room will sit on, because that decides whether we build on the patio or deck you have or start with a proper foundation. Then we frame the walls and roof, tie the roof into the house and flash it so rain runs off instead of into your wall, and set the windows or screens so they slide and latch right. The part we watch closest is the door between your house and the room, because the room isn't heated or cooled and that door is what keeps your home comfortable. One sunroom maker recommends an insulated entry door there, and we fit ours so it seals and closes without a fight.
Some homeowners don't need a full room. If you mainly want to keep dust, wind and bugs off the patio you already sit on, patio enclosures may cover it. When your yard, roofline or plans don't fit a standard layout, we build custom sunrooms around the house you have.
Why Rancho Cucamonga homeowners call us for three season rooms
I measure, our crew builds
I come out myself to look at the space and measure, and our own crew does the building with me on the job. The person who priced your room is there when it goes up, so nothing gets lost between the estimate and the work.
Building since 2017, fixing before that
We've built these rooms since 2017, and before that I spent years fixing leaky patio covers, sagging enclosures and rushed sunrooms for a property management company. I build so water goes where it should and nothing gets hidden behind trim, because I've torn out plenty that did.
Based here, used to these patios
We're based in Rancho Cucamonga and work in the cities around it, where most of our calls are about a patio or deck out back that sees too much sun, wind and dust to use. We know what those spaces usually need before a room can go on them.
Licensed and insured on site
We're licensed and insured, which is worth confirming with anyone who'll tie a room into your roof and walls. The work is backed by our satisfaction guarantee.
On a three season room, how it holds up comes down to where it meets your house. Tell us about your patio or deck, or call (909) 360-4006, and I'll come take a look.
Get a written price for your three season room
Send the form and we'll get back to you within one business day to set up a free on-site estimate. I'll measure and put the price in writing, with no obligation to go ahead.
- Licensed and insured.
- Free on-site estimates.
- Replies within 1 business day.
What happens after you call about a three season room?
Call or send us a message
Call (909) 360-4006 or use the form, and we'll set a time for me to come out. It helps to know roughly how big you want the room, whether your patio or deck is level and whether you want insulated windows.
I look and measure
I look at the space and what the room will sit on, take measurements and talk with you about how you'll use it. Then you get a written estimate with the price, so you know the number before you decide anything.
We handle permits and build
Once you sign, we pull the permit when the job needs one and work with the city's building office through the inspections. Our own crew builds the room, and I'm on the job with them.
We walk the room together
When it's done, I walk the finished room with you and we open and close every door and window. That's when you see the door to the house seal and the tracks run the way they should.
Three season sunroom questions
How much does a three season sunroom cost in Rancho Cucamonga?
Building a sunroom in Southern California usually costs about $110 to $190 per square foot. That range comes from sunrooms in general across the region, so treat it as a rough guide, since size, finish and foundation move it a lot. Your written estimate gives you the number for your room.
How do I know if a sunroom can go on my existing patio or deck?
If your deck or patio has a level surface, a prefab kit can often attach to it, while a site-built sunroom needs a proper building foundation. That's the first choice to make, because going site-built adds foundation work to the plan. When I come out, I'll look at what you have and tell you which way makes sense.
How do sunroom permits work in Rancho Cucamonga?
Rancho Cucamonga handles permits online, and its building and safety office takes permit questions by email at EDRnotification@CityofRC.us. The city's permit list names patio covers, reroofs and solar but not three season rooms, so whether yours needs one is a question for the city about your address. The city also put its fire hazard severity zone map out for public review in 2025, and you can check your address on it online or at the city's fire headquarters. Before we start, we check what the city wants for your address.
Should I insulate a three season room now or add it later?
If there's a fair chance you'll want a warmer, more energy efficient room, put insulated windows and insulation in the walls, floor and roof in the first plan. They're much easier to install while the room is being built, and adding them later can often cost more. If you're sure you won't, leaving them out keeps the first bill lower.
Is a three season sunroom considered living space?
Not by the industry's own sunroom specifications, which class a room with enclosed walls and glass or clear plastic openings as non-habitable and not heated or cooled. That's why it's built and priced differently from the rest of your house. If you want a room you can use like the rest of the house all year, look at four season sunrooms instead.
How do I keep sunroom doors and windows sliding smoothly?
Keep the door and window tracks clean, inside and out. When they start to drag, one maker's guide recommends a pure silicone spray rather than an oil-based lubricant. A few minutes on the tracks now and then saves you a door that fights you later.
Work that pairs with a three season sunroom
Patio enclosures
A lighter way to close in the patio you already use when you want shelter from bugs and wind more than a finished room.
Custom sunrooms
For an odd-shaped yard or a tricky roofline, where a room drawn around your house fits better than a set layout.