Expert Sunroom Contractor in Ontario CA - Dry, Usable Rooms Built on a Solid Base
Sunhaven Ontario Sunrooms & Patios builds sunroom additions and patio enclosures in Ontario, Upland and the cities nearby. We also turn an old patio slab or deck into a sunroom and build patio covers for backyards with no shade.
- Fully licensed and insured.
- Free on-site estimates.
- Replies within 1 business day.
Why homeowners in Ontario call us
Planned around how you'll use it
Heated or not, family room or plant room, we settle how you'll use the space before anyone orders a single pane of glass.
Base checked before any price
I look at the slab, deck or patio cover first, so your quote is for a room sitting on something that can carry it.
Quotes that show what's in and out
Our written quotes say plainly whether insulation, heating and cooling and permit work are included, so you can compare bids line for line.
Tell us about the room you have in mind through our contact page, or call (909) 738-1566.
Building sunrooms in Ontario, CA
Ontario is our home base, and the City of Ontario handles the permits and business licenses for home projects here. Westwind Park, the West Cucamonga Creek Trail System and the fishing lakes at Cucamonga-Guasti off the I-10 are where plenty of local families spend a weekend outside. A good sunroom gives you some of that without leaving your own backyard.
For a sunroom, the office that matters is the city's Building Department, which issues permits, reviews plans and inspects the work. On our Ontario jobs we're the ones dealing with that department, so you don't have to learn its routine to get your room built.
Tell us about the room you want
We reply within one business day, and there's no obligation. I'll set a time to come out, measure, look at what the room will sit on and ask how you'll use it. Then you get a written quote that spells out what's included.
A sunroom contractor based in Ontario since 2013
Sunhaven Ontario Sunrooms & Patios is a sunroom contractor based in Ontario, California, and we're fully licensed and insured. I started the business in 2013 after years on commercial framing and glazing crews, putting up storefronts and office buildings, because I wanted to build homes the same careful way with fewer meetings. Today we offer 16 services across 12 cities, and our own crew does the building. You can read more about us.
Sunroom contractor services in Ontario, CA
Sunhaven Ontario Sunrooms & Patios is a sunroom contractor in Ontario, CA, with 16 services, from screen rooms to four season additions. The price moves with size, glass, roof, insulation and heating and cooling, and with what shape your slab or deck is in. City plan review usually sets the schedule more than the build does. Your free estimate comes with a written quote that spells out what's included.
Sunroom additions
We build a new glass-walled room onto the back or side of your house, framed and roofed so it ties in tight and stays dry.
Four season sunrooms
For homeowners who want a real room all year, we build four season sunrooms with insulated walls, insulated glass and heating and cooling.
Three season sunrooms
A three season room skips the insulation and heating and cooling, which keeps the cost down for people who use it mostly in mild weather.
Patio enclosures
If your covered patio mostly collects dust and leaves, we enclose it with glass or screen walls so it becomes a room you'll actually use.
Custom sunrooms
We design and build sunrooms to fit your house's roofline, your yard and the way you live, rather than picking a kit off a shelf.
Sunroom construction
Our own crew handles the build, from slab or footing work through framing, glass and roofing, for homeowners who want one builder start to finish.
Sunroom remodeling
When an older sunroom leaks, gets drafty or just looks tired, we replace glass, roofing, seals and finishes so the room is worth using again.
Screen room installation
A screen room keeps bugs and leaves out while letting the breeze through, and it's a simpler, lower-cost build than a glass sunroom.
Patio-to-sunroom conversion
We turn an existing patio slab into a closed-in room, after checking that the slab can carry walls, a roof and glass.
Deck-to-sunroom conversion
If you'd rather use your raised deck all year, we check the framing and footings, reinforce what needs it and build the room on top.
All season rooms
An all season room is built like the rest of your house, insulated and heated and cooled, so it works as everyday living space.
Enclosed patio rooms
For homeowners with a patio cover up, we fill in the sides with windows, screens or short knee walls to make an enclosed patio room.
Solarium installation
A solarium has a glass roof as well as glass walls, for people who want the most light and the sky overhead.
Patio cover installation
We build attached and freestanding patio covers for shade, and we can size the posts and beams so walls can go in later.
Sunroom design
Before any glass gets ordered, we work out size, layout, glass, roof and heating and cooling around how you plan to use the room.
Vinyl sunrooms
We build vinyl-framed sunrooms for homeowners who want low upkeep, since vinyl frames won't rust and don't need painting every few years.
A look at sunroom work
Use the arrows to see every photograph.
How a sunroom job goes with us
Call or send the form
Call (909) 738-1566 or send the contact form and tell us roughly what you're picturing. We get back to you within one business day, and I set a time to come out. A rough idea is plenty at this stage. Sorting out the details is my job.
On-site look and written quote
I measure, check the slab, deck or patio cover the room will sit on, and ask how you'll use it, heated or not. Then you get a written quote that spells out what's in and what isn't. The estimate is free, and there's no obligation to go ahead.
Permits and the build
Once you sign, we draw the plans, file them with the city and schedule the inspections. City review takes time, so we keep you posted while it runs. Our own crew does the building, and licensed electricians and heating and cooling trades come in where the job needs them.
Final walkthrough
When the room is done, I walk it with you. I'm the same person who measured it, so nothing slips between the quote and the build. We open the windows and doors, look over the joint with the house and clean up. Then it's your room to use.
Your sunroom questions answered
How much does a sunroom cost in Ontario, CA?
It depends on the room, so we price each one after seeing it, and the estimate is free. Size, glass, roof type, insulation and heating and cooling move the number most, along with any work your slab or deck needs first. A screen room and a four season addition get priced like two different jobs, because they are.
How much can a contractor ask for as a down payment in California?
California's Contractors State License Board says a contractor can't ask for or take more than $1,000 or 10 percent of the contract price, whichever is less. Later payments are listed in the contract and tied to work done or materials delivered. The rule covers all home improvement projects.
How long does it take to build a sunroom in Ontario?
It depends on the size of the room and on how long city review runs, which often takes longer than the building. We tell you up front that review takes time and keep you posted while it runs. If a plan check or permit needs more than one extension, the city charges $150 for each extra residential extension after the first.
Do I need a licensed contractor to build a sunroom in California?
Almost always, because California requires a state contractor license for work that needs a building permit, uses workers, or totals $1,000 or more in labor and materials. A big job can't be split into small contracts to slip under that line, and Ontario also requires contractors working in the city to hold a city business license. We're fully licensed and insured.
Who issues building permits for a sunroom in Ontario, CA?
The City of Ontario's Building Department issues building permits in the city and handles plan review and inspections. Whether your room needs one depends on the job, so ask the department at (909) 395-2023 or ask us at your estimate. When a job needs a permit, we prepare the plans, file them and schedule the inspections.
Can you build a sunroom on my existing patio slab or deck?
Often, but only after we check it, because a slab poured for a patio or a deck framed for chairs wasn't necessarily built to carry walls, glass and a roof. I'd rather spend an extra hour on the base than have you find a crack or a leak in the first big rain. If it needs work, the quote says so.
Do you guarantee your sunroom work?
Yes, our work is backed by our satisfaction guarantee. Warranties on glass, frames and other products come from the companies that make them, not from us, so ask about them at your estimate.
Should I get a glass sunroom or a screen room?
Get glass if you want a room you can use most of the year, and a screen room if you mainly want fresh air without the bugs. Glass costs more, especially once you add insulation and heating and cooling. If you're torn, we usually point people toward glass, because a room you skip half the year is just a nicer porch.
Where we build sunrooms
Sunhaven Ontario Sunrooms & Patios is based in Ontario, CA, and builds in Upland, Chino and the other cities around it. The 12 cities below each have their own page, and we work in other nearby cities too, so call if yours isn't listed.