Deck-to-sunroom conversion in Colton CA - a room that sits on a sound deck
Your deck sits empty most of the year because of sun, wind or bugs. We build a room on it you'll actually use.

- Licensed and insured.
- Free in-person estimates.
- Expect a reply within 1 business day.
Can you turn my deck into a sunroom?
A deck-to-sunroom conversion in Colton turns the deck you already have into a three-season room, one you can use from spring through fall, with windows, siding, a roof, fixtures and electrical access, and the deck itself becomes the base the room sits on.
Most people who call me have a deck that's solid enough but goes unused most of the year, and they want the space without starting over on the ground. The price moves with the room's size, whether the deck needs work before anything goes on it, how the new roof ties into the house and whether you want insulation, heating or cooling added. The schedule mostly turns on the deck's condition and how long the city's review takes, and once I've seen your deck, your written estimate lays out what your room involves.
How we do a deck-to-sunroom conversion
I start by checking that your deck is level, square and solid, and if it needs work before anything goes on it, I tell you up front instead of building over a problem. Next we settle how the new roof will tie into the house and plan the room around how you'll really use it, then our crew sets the floor track, frames the walls, puts in the windows and siding, and finishes the roof, fixtures and electrical access. Before the walls close in, I'll show you how we seal the joints where the room meets the deck, because that's the spot you'll be trusting for years.
A deck conversion is usually a three-season room, but if you want a space you can heat and cool and use in every month, we can talk through all season rooms instead. If your outdoor space is a ground-level patio rather than a deck, enclosed patio rooms are the closer fit.
Three-season room on your deck
This is the usual conversion, with windows, siding and a roof built on the deck you have. It suits you if you want the room most of the year without running heat or air in it, and it keeps the load on the deck light.
Insulated room with heating or cooling
If you want to sit out there in the hottest and coldest weeks too, we can plan insulation and extend your heating or cooling into the room. It's a bigger job, so it's worth deciding early, before the plans are drawn.
What Colton needs before a deck-to-sunroom conversion
In Colton, the Building and Safety Division handles plan check, permits and inspections for building construction, and the city takes applications through its online permit portal, with the plans uploaded there. Whether your room needs a permit is the city's call, and when it does, we confirm which building office covers your address, prepare the plans, handle the paperwork and set up the inspections. Those plans also have to account for California's Energy Code, which sets energy and water efficiency requirements for additions and alterations to existing houses, so we work that in alongside the structure instead of after it.
Most backyard decks we see around here have taken years of hard sun, and a deck that's fine for a grill and a few chairs can still have boards or posts that need attention before walls and a roof go on. We meet the same kinds of decks on jobs in San Bernardino and Redlands, and we work in cities all around Colton, so if yours isn't listed, just ask.
Why Colton homeowners call Sunbeam Colton Sunrooms & Patios about their decks
I come out for every estimate
I look at your deck and the wall where the room meets the house myself, and our crew does the building after that. You're talking to the person who planned the job from the start, and I'm glad to go over any point twice.
Building sunrooms since 2013
We've been building and remodeling sunrooms, patio rooms and covers for 13 years, and I learned the trade working alongside an experienced installer until I could run the jobs myself. Most of our calls come from people who want more use out of a deck or patio, so this is work we know well.
Licensed and insured for your project
We're licensed and insured. Ask about both at the estimate, because anyone building a room on your deck should be able to answer that plainly.
We talk to Colton staff first
The city asks applicants to consult staff before submitting, since many permits also need approval from the Planning Division or another department. We have that conversation early so your plans don't get redrawn halfway through.
Tell us about your deck and I'll set a time to come out and look at it. Your satisfaction, guaranteed.
Request a quoteGet a written estimate for your deck sunroom
We'll reply within one business day to set up a free on-site estimate. I'll come look at your deck and where it meets the house, ask how you want to use the room, and then you get a written estimate. There's no pressure and no obligation.
What happens after you call about a deck sunroom in Colton?
Call or send a message
Call (909) 679-6010 or use the form and tell us roughly how big the deck is. We'll get back to you and set a time for me to come out.
I check the deck and house
I look at the deck and the roof edge where the room will meet the house, and I ask how you plan to use the space. You get a written estimate based on what I found.
We handle plans and permits
Once you're ready, we prepare the plans, handle the permit paperwork and set up the inspections. Colton books an inspection for the next day when the request comes in by 4 pm, but Thursday and Friday requests roll to the following Monday, so a stage finished late in the week can wait until then.
Our crew builds, I walk through
Our crew builds the room on your deck. When it's done, I walk through the finished job with you.
Frequently asked questions
Can my existing deck hold a sunroom?
Usually yes, if it's level, square and built to code, because one sunroom maker's guide says a deck and footings built for regular framing will carry a sunroom, since its parts are lighter. If your deck isn't there yet, it needs work before the room goes on, and I'll tell you that at the estimate.
How do I attach a sunroom roof to my house?
Plan the roof connection early, because one maker's guide says the fascia board, the trim board along your roof edge, is rarely able to carry the extra load of an attached roof. How the new roof ties into the house shapes the rest of the design, so it's one of the first things I look at.
How much does a deck-to-sunroom conversion cost near Colton?
In the San Bernardino area, adding a three-season room to an existing structural base usually runs about $100 to $140 per square foot, installation included, covering the windows, siding, roofing, fixtures and electrical access. A room on a sound deck with no heating or cooling tends toward the low end, while larger rooms that need a foundation and heating and air conditioning sit near the top. That's the going rate in the area, not our quote, and your written estimate gives your own number.
What isn't included in the usual sunroom price?
The usual per-square-foot figures leave out insulation, extending your heating or cooling, plumbing and permit costs. Set money aside for whichever of those your room needs so the full job doesn't catch you off guard.
Does a sunroom contractor need a license in California?
Yes, California requires a license for any work that needs a permit of any kind, even when the project is under $1,000. Ask any contractor you're considering about their license before you sign.
How do I keep a sunroom on a deck from leaking at the floor?
Make sure the floor track joints get sealed well during the build, because one maker's guide calls that critically important and says a leak there can only be fixed by taking the sunroom apart. Ask any installer how they seal those joints before work starts, and I'll walk you through how we do ours.
Other rooms you might be weighing
All season rooms
For a room you'd heat and cool and sit in through every month, not just the mild ones.
Enclosed patio rooms
For a closed-in room over a ground-level patio when there's no deck to build on.
Colton, CA
Have your deck checked for a sunroom
Have the deck's size and a few photos of the deck and roof edge ready when you call (909) 679-6010 or fill out the form, so I come out already knowing what to look for.




