Sunroom Contractor in Fontana, CA - Rooms Built on Your Backyard Slab
Suncraft Rialto Sunrooms & Patios is a sunroom contractor working in Fontana, CA. We close in patios, build four season and three season rooms, and add new sunrooms onto Fontana houses, with our own crew doing the building.

- Licensed and fully insured.
- Free quotes on site.
- We reply within 1 business day.
Fontana houses and the backyards behind them
Fontana is mostly single-family houses, and they run a wide range, from older single-story homes in the south end of town to newer two-story tract homes up north. Most of our calls here come from people who already have a concrete slab out back, often under an aluminum or wood patio cover, and want it turned into a room they'll actually use. Fontana sits right next to Rialto, where we're based, and we see the same kinds of backyards heading east into San Bernardino.
That slab decides a lot. On older houses it may be cracked or settled and the cover may be the original, while newer homes often have a small slab that has to grow before a full room fits.
What we deal with on Fontana sunroom jobs
Inside Fontana city limits, building permit applications go to the city's Building & Safety office, but if your house is in the unincorporated part of Fontana, the county regulates it instead, so the first thing we do is check your job site with the city's Planning office. The permit sits between your quote and our start date, so it sets the schedule as much as the build does. Fontana also requires every business working inside the city to hold a city business license, even one based somewhere else like us, and it expires a year from the day it's issued, so it's fair to ask any contractor to show you a current one. We're licensed and fully insured, and when your job needs a permit, we handle the application and the inspections with the office for your address.
What moves your price here is mostly what's already in the backyard. A sound slab and cover keep the job simpler, while slab repair, a bigger footprint, four season walls and glass, or a new roof tie-in add to it, and you see all of it laid out in your written quote. Fontana is a short drive for our crew from Rialto, the same as our work in Rancho Cucamonga and Bloomington.
Get a free on-site sunroom quote for your Fontana house
Send the form or call (909) 546-5002, and we reply within 1 business day to set a time. I come out to your Fontana house myself, measure and look at the slab, and you get a written quote, free, with no pressure and no obligation.
Call (909) 546-5002Services in Fontana, CA
Patio-to-sunroom conversion
A lot of Fontana backyards already have a slab and a patio cover, and that's where most of our jobs here start. I check whether both can carry walls and glass, and if they can't, I tell you before we quote it.
Four season sunrooms
When you want the room to work as part of the house, like an office or a family room, a four season sunroom with insulated walls, roof and glass is the build. We tie it into your house so it feels like another room, not a porch with windows.
Three season sunrooms
If you mostly want a bright place to sit out of the bugs on evenings and weekends, a three season room costs less to build than a full four season room. We frame it and glass it on your existing slab when the slab is up to it.
Patio enclosures
On older Fontana houses the patio cover is often the original one, and closing it in only works if it's still solid and properly attached. We check the posts, beams and the house connection first, then fix or replace what needs it before any walls go up.
Patio cover installation
Many newer tract homes here come with a bare slab and no cover at all. We build a solid cover now, set up so it can be closed in later if you decide you want a room.
Sunroom additions
When there's no slab worth keeping, or you want more room than the patio gives you, we build the sunroom as an addition from the foundation up. It costs more than closing in a patio, but you get the size and layout you actually want.
How it goes when you call us about a Fontana sunroom
Call or send the form
Call (909) 546-5002 or send the form, and we get back to you to set a time for me to come out. Pick a time you can be home, because I'll want to walk the yard with you.
I measure and look it over
I measure, check your slab or deck and how your house is built, and we talk through what you want the room for. You get a written quote, and if the slab or the idea won't work, you hear it from me right then.
We handle the permit side
When your room needs a permit, we put in the application with the office for your address and set up the inspections. The city's Building & Safety counter is open Monday to Thursday and closed every Friday, so we plan our trips there for those days.
Our crew builds the room
Our own crew does the building, and I'm on the job with them. I stay with it through the final inspection, so you have one person to talk to the whole way.
Common questions
How much does it cost to add a sunroom in Fontana?
Your price comes from what's already behind your house, so you get a real figure in a written quote after I've measured and looked at your slab. Beyond the size and the kind of room, things like lights, outlets, a ceiling fan, the type of glass and how much the roof line has to change all add to it. Call (909) 546-5002 to set up a visit.
Who can sign for a building permit in Fontana?
Once the fees are paid, only the contractor on record or the property owner can sign for a Fontana building permit, and anyone else needs written permission notarized by one of them. The city's permits page also says an owner who pulls a permit for a contractor's work takes on the liability for the project, including taxes and personal injury. That's why we pull it as the contractor on your job.
Can I apply for a building permit online in Fontana?
Building & Safety encourages applicants to set up an account on the Build Fontana Public Portal, and it still takes applications at its counter. Paying online carries a service fee of a percentage plus $0.20 per transaction, or a flat $3.00 per transaction if you pay by ACH from a bank account. On our jobs we handle the application, so you don't have to set up an account yourself.
What do I need for a permit in Fontana if I just bought my house?
You'll need proof of ownership, because the city asks owners of newly purchased properties to provide it with the permit. Have your purchase paperwork handy when I come out, and we'll take care of getting it in with the application.
How do I turn my covered patio into a sunroom in Fontana?
Start by having the slab and the patio cover checked, because walls, glass and a closed roof ask a lot more of both than an open cover does. I look for cracks, settling and how the cover is fastened to the house, and if either one won't carry a room, I tell you up front and we plan around it with slab work or a new cover. From there it's a written quote, the permit side and the build.
What causes a closed-in patio to leak on a Fontana house?
Most leaks in a closed-in patio come from where the new roof meets the house, or from a slab that drains toward the wall instead of away from it. We flash that roof joint into your stucco or siding and check how the slab drains before the walls go up, because a room that stays dry is the whole point.
Start your Fontana sunroom with one call
Call (909) 546-5002 seven days a week, until 10 PM on weekdays and 9 PM on weekends, or send the form whenever it suits you.




