Sunroom contractor in Ontario, CA - more use from the patio you already have
Sunscape Fontana Sunrooms & Patios is a sunroom contractor based in Fontana, CA. We build sunrooms, patio enclosures and patio covers for homes in Ontario, most of them on a patio the family barely uses now.
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Ontario homes and what they sit on
Ontario is a short drive west of us in Fontana, and its north side runs right up against Upland and Rancho Cucamonga. The houses we work on here range from older single-story homes closer to the middle of the city to newer tract homes with smaller yards, and the calls sound about the same either way. Someone has a back patio they hardly use and wants it to be a room.
That mix means no two estimates here start the same way. The age of the house tells me a lot about the slab, the roof line and the wiring, and those three decide how a room goes on.
How permits and pricing work in Ontario
In Ontario, the permit comes from the city's Building Department, which reviews the plans before work starts and inspects the work while it's built, so plan review is a real line on the schedule and not something we hope goes quickly. Before you hire anyone, ask for their California contractor license and their Ontario business license, because the city wants a business license from contractors based outside its limits too. We're licensed and fully insured, and we pull the permit in our name and handle the drawings, the inspections and the back and forth with the city.
The price on an Ontario job moves with the size of the room, whether your slab or deck can carry walls and a roof as it stands, how the new roof ties into your house, glass or screens, and whether the room needs electrical or heating and cooling, which we bring licensed trades in for. The schedule turns mostly on the city's review and on how much work the base needs, and your written quote spells out what's in the price and what isn't. Each city has its own office and its own forms, so when we build in Bloomington or back home in Fontana, we deal with whichever office covers that address and don't assume Ontario's routine carries over.
What do Ontario patios usually need before a room?
A lot of the older houses here have a patio cover someone added years ago, usually on thin posts, and it was built to throw shade, not to hold up walls and windows. When you want to close one in, we look at the posts, the footings and where the cover meets the house, and more often than not the roof gets rebuilt so the room works the way you pictured it.
On newer homes, the slab out back was usually poured for a table and a grill. Its edge may be too thin to carry a wall, so I check it at the estimate and the quote says whether we add footings first.
- Call (909) 346-1870
- Mon–Fri: 6 AM–9 PM, Sat–Sun: 7 AM–9 PM
- Fontana, CA 92335
Sunroom work we do in Ontario
Patio-to-sunroom conversion
Most Ontario rooms start on a patio that's already there, so we check the slab and the old cover first and build the room around what they can carry. If the slab needs new footings at the edge, the quote says so up front.
Patio enclosures
For a covered patio you'd use more if it kept the dust and bugs out, we close it in with windows or screens on posts that can take them. Posts that can't take them get replaced before any walls go in.
Sunroom remodeling
Some Ontario houses already have an older sunroom with tired windows or a roof that never quite sealed to the house. Our sunroom remodeling work replaces what's failing and keeps what's still sound.
Patio cover installation
If you want shade now and maybe a room later, we build a patio cover with posts and footings sized so it can be closed in down the road. You get the shade without boxing yourself in.
Four season sunrooms
For Ontario homes short on living space, a four season room is the one you use like any other room in the house, with insulated walls and roof. When it needs its own heating and cooling, we bring in licensed trades and plan that in from the first drawing.
Screen room installation
A screen room suits an Ontario backyard where you want air and a view without the bugs, and it asks less of an older slab than glass walls do. We frame it so windows can go in later if you change your mind.
How an Ontario sunroom job goes, start to finish
Call or send the form
Call (909) 346-1870 or use the form and tell us a little about the patio or room. We set a time for me to come out that suits you.
I come out and look
I check the slab or deck, how the roof meets the house and how you want to use the room, so it helps if you're home. You get a written quote that says what's in the price and what isn't.
We handle drawings and permit
We draw the room, pull the permit with Ontario's Building Department and set a schedule that already counts the city's plan review. You don't have to stand at a permit counter, which is the best thing anyone can say about paperwork.
Our crew builds the room
Our own crew builds it, and the city inspects the work along the way. When it's done, I walk the finished room with you.
Get a written sunroom quote for your Ontario home
Send the form and we'll reply within one business day to set a time. I come out to your Ontario house myself for the free on-site estimate, and there's no obligation to go ahead with it.
- Licensed and fully insured.
- Phone
- (909) 346-1870
- Location
- Fontana, CA 92335
- Hours
- Mon–Fri: 6 AM–9 PM, Sat–Sun: 7 AM–9 PM
Ontario sunroom questions we hear most
Do I need a licensed contractor to build a sunroom in Ontario, CA?
Yes, for practically any sunroom. California requires a current state license from the CSLB for work that needs a building permit, uses hired workers, or totals $1,000 or more in labor and materials combined, and a room built by a crew meets at least one of those. The exemption covers only jobs under $1,000 with no permit and no workers, and a bigger job can't be split into small contracts to fit under it.
How do I check that a sunroom contractor can work in Ontario?
Ask for two things, a California contractor license number and an Ontario business license. The city uses one business license application for contractors inside and outside its limits, and it asks for the state license number and workers' compensation details, plus the job location and value from out-of-city contractors. If someone can't show you both, keep looking.
How much does a sunroom cost in Ontario, CA?
Your price is set at the on-site visit, in a written quote, because the biggest swing is what's under the patio, and nobody can price that from a photo. Screens instead of glass, a three season room instead of four, or keeping a cover that's still sound usually bring the number down. New footings, a rebuilt roof and heating and cooling push it up.
How much can a contractor ask for as a down payment in California?
No more than $1,000 or 10 percent of the total contract price, whichever is less, under the CSLB's rules for home improvement work. After that, payments should be listed in the contract and tied to work done or materials delivered. That holds for a sunroom the same as any other home project.
What happens if my sunroom permit needs an extension in Ontario?
The first extension request on a plan check or permit costs nothing, and each further extension the city grants costs $150 on a residential permit. Nobody budgets for paying the city twice, so we count the review into the schedule from the start instead of asking for more time halfway through.
How do I turn my covered patio into a sunroom in Ontario?
Start by finding out whether the slab and the cover can carry a room, because that decides most of the job and most of the price. I check both at the estimate, then we draw the room, handle the permit and build it, often keeping the slab and adding footings at the edge where it needs them. Call (909) 346-1870 or use the form to set up the visit.
Book your Ontario sunroom estimate
One look at your slab tells you whether your patio is ready for a room, before you spend a weekend picking out windows.
Request an estimateCall (909) 346-1870