Sunroom Contractor in Ontario, CA - Rooms That Hold Up on Older Patios
Rancho Cucamonga Sunrooms & Patios is a sunroom contractor working in Ontario, CA. We turn concrete patios and worn aluminum covers into sunrooms, enclosures and screen rooms with sound roofs, doors that close right and water that runs off.
Ontario: older patios, newer tract backyards
Ontario is a big city with a lot of different houses in it, and the calls we get there show it. In the older neighborhoods it's mostly single-story homes with a poured patio out back and a cover somebody added years ago, often aluminum and often leaking where it meets the house. In the newer tracts the houses are bigger and the yards are smaller, so the question is usually how to get a room you'll use without eating the whole backyard. It's a short drive from our base in Rancho Cucamonga, and the work looks a lot like what we do in Chino and Upland.
What's already back there decides most of the job. An old slab may not be level or strong enough at the edges to carry walls, and an old cover usually wasn't built to hold glass, so I look at both before we talk about what kind of room you want.
- Licensed and insured.
- Free on-site estimates.
- Replies within 1 business day.
Sunroom work we do in Ontario
Patio-to-sunroom conversion
A lot of Ontario backyards already have a slab and a cover, which is why conversions come up so often here. We check whether the slab and posts can carry walls and a roof, and we replace what can't instead of building over it.
Patio enclosures
On older houses we find enclosures pieced together over the years, with gaps at the posts and screens that never sat right. We take them back to a sound frame and close in the space so the walls, doors and roof line up and drain away from the house.
Three season sunrooms
When you mostly want shade and screens off the patio, a three season sunroom gives you a room without tying into the house's heating and cooling. It's less to build than a full room, and we'll talk through whether it can be closed in further down the road.
Four season sunrooms
In the newer tract homes with small yards, a four season room adds real living space on ground the patio already takes up. We insulate it and tie it into the house so you use it like any other room, which means checking the roof tie-in and the electrical early.
Sunroom remodeling
Some Ontario rooms were built in a hurry, and you can tell by the stained ceiling panels and the door that sticks. I spent years fixing rooms like that, so we open up what's hidden behind the trim and fix the cause, not just the stain.
Patio cover installation
If all you want is shade over the slab, a new cover is the honest answer and costs a lot less than a room. We set the posts on proper footings and pitch the cover so rain runs off instead of back toward the house.
Working in Ontario: permits, licenses and price
In Ontario, the city's Building Department issues permits and handles plan review, a check of the drawings before anything gets built, and the inspections while the work goes up. Whether your room needs a permit is the city's call for your address, so before we start we check what the city wants, and when a permit is needed we pull it and work with the building office through each inspection. Plan review has to happen before we can build, so it sets the start date more than anything on our end, and you're welcome to call the department yourself at (909) 395-2023. Before you hire anybody, check that they hold a California contractor license and an Ontario business license, because the city licenses contractors from outside its limits on the same application it uses for local businesses.
On price, the big things are the size of the room, screen walls or glass, and what shape the slab and any old cover are in, since rebuilding footings or tearing out a cover is work that happens before the room even starts. A room tied into your roofline or needing new circuits costs more than one standing on its own posts. The schedule turns mostly on plan review and on how much of the old patio we have to fix first. I come out, look at what's there, measure and give you the price in writing, the same way we do in Fontana and the other cities around Rancho Cucamonga.
Get a written sunroom price for your Ontario home
Send the form or call (909) 360-4006 and we'll get back to you within one business day. I come out to your Ontario house myself, look at the patio, measure and put the price in writing. The estimate is free and there's no obligation.
- Licensed and insured.
- Free on-site estimates.
- Replies within 1 business day.
Sunrooms and patio rooms for Ontario homes
Ontario sunroom questions
Do I need a licensed contractor to build a sunroom in Ontario, CA?
Yes, if the project needs a building permit, uses hired workers or comes to $1,000 or more in labor and materials combined, because state law then requires a contractor with a current California license. The only exemption the state describes is a job with no permit, no employees and under $1,000 in total, and a bigger job can't be split into small contracts to get under that. Ask for the license number before you sign anything.
How much can a sunroom contractor ask for as a down payment in California?
Under state rules, a contractor can't ask for or take a down payment of more than $1,000 or 10 percent of the contract price, whichever is less. Every other payment should be listed in the contract and tied to work done or materials delivered, and the rule covers all home improvement work. If someone wants a big check before anything shows up at your house, that tells you a lot.
How much does a sunroom cost in Ontario, CA?
Your price comes down to the room you pick and the shape of what's already in your backyard, so the real number is the written one I give you after measuring. The lower end is usually a three season room or a new cover on a slab that's in good shape, and the higher end is an insulated room tied into the house where the old slab or cover has to come out first. Call (909) 360-4006 and I'll come measure.
What happens if my Ontario building permit needs more than one extension?
The city doesn't charge for the first extension on a plan check or permit, but each extension it grants after that costs $150 on a residential permit. That's one reason we keep the work moving once a permit is pulled, so a job doesn't sit open and start costing you fees.
What is the best way to turn an old patio cover into a sunroom on an Ontario house?
Start by finding out whether the slab and the cover can carry a room, because most older covers weren't built to hold walls and glass. Usually we keep a sound slab, add footings, the concrete pads that carry the posts, where the walls land, and replace the cover with a roof made for an enclosed room. Building walls under a cover that wasn't meant for them is how you end up with sagging and leaks, and I've torn out plenty of those.
What causes an older patio enclosure to leak, and can it be fixed?
Most leaks start where the room meets the house, from a roof without enough pitch or from flashing, the metal that turns water at a joint, that got skipped and covered with trim. It can usually be fixed, but only by opening up that joint and doing it right, since more caulk just hides the problem until the next rain.