Three season sunrooms in Corona CA - a room built for how you'll use it
If your patio or deck sits unused because of bugs, wind or glare, we close it in with screens or glass so you can enjoy it.
What is a three season sunroom, and does it fit your Corona home?
A three season sunroom in Corona is a room closed in with screens, window panes or storm windows that isn't insulated, heated or cooled, and stays separate from your house's heating and cooling. It gives you a sheltered room on a patio or deck you already have, without the cost of a fully conditioned addition.
Most homeowners who call us have a patio, deck or cover they'd like to use more of the year, and a three season room is usually the lighter way to get there. The price mostly moves with the size of the room, whether it goes on a base you already have or needs a new one, and the glass you pick, and the schedule turns on what the base needs and what the building office asks for at your address. We're licensed and insured, and the city asks every contractor and subcontractor to show proof of state and city licenses, so it's fair to ask anyone you're comparing for both. Your written estimate shows the room type, the materials and what's included for your space.
What happens after you call about a three season sunroom?
Tell us about your space
Call or send the form with your address, the rough size of the room and whether you might heat it someday. We then set a time for me to come out.
I measure and look around
I look at the patio, deck or ground the room would sit on, take measurements and ask how you plan to use it. You then get a written estimate listing the room type, the materials and what's included, so you know what you're paying for before you agree to anything.
We check permits, then schedule
Before anything goes on the calendar, we check what the city or county building office expects for your address. If your job needs a permit, we prepare the paperwork and work through the process with you.
We build and walk through it
Our installers and I build the room together, so the person who measured your space is on site every day. When it's done, I walk through the finished room with you before we call it complete.
How we build a three season sunroom
Before we plan anything, I ask how you'll use the room and whether you might want to heat it someday, because that answer changes which windows make sense now. Then I look at your lot, since a room is only as good as what it sits on. One sunroom company describes a wood deck base as generally more adaptable and possibly lower in cost, concrete as the strongest and most permanent choice, and pier and beam supports as a good fit for slopes and existing surfaces, so whether your yard is flat or sloped and what's already there help decide the base. Once that's settled, we set the frame, fit the screens or glass, seal the joints where the room meets your house and clean up before we go.
Some homeowners only need part of that. If you have a covered patio and want it closed in simply, our patio enclosures may be the better fit. If your space has an unusual shape or you want a layout a standard room won't give you, we plan and build custom sunrooms around it.
Get a written estimate for your three season room
Send your address, a rough room size and whether you might heat the room later, and we'll reply within one business day to set a time for me to come out. The on-site estimate is free, and there's no pressure and no obligation.
Three season sunroom questions in Corona
How much does a three season sunroom cost in Corona, CA?
A three season room added to an existing base in Corona usually costs about $130 to $190 per square foot. That figure covers standard-grade windows, siding, roofing, fixtures and electrical access, while insulation, heating and cooling, plumbing work and construction permits add to it. Your estimate puts your own room in writing.
Can I heat or cool a three season room later?
You can, but it's much easier if you plan for it before the windows go in. An industry sunroom specification covers rooms heated or cooled by a separate system and requires their windows and doors to meet standards for air leakage, water getting in and thermal performance. That's why I ask about heating at the first visit.
What is the best way to choose glass for a three season sunroom?
Start with how you'll use the room and what you want to spend. One window maker says the right glass depends on the room's location, your local climate, your budget and how you'll use it, and that someone using it as a year-round family room may choose more energy-efficient glass than someone on a tight budget. The same maker notes tempered glass is stronger and breaks into small chunks instead of shards, so it's worth asking which panes in any bid are tempered.
Do I need a permit for a three season sunroom in Corona?
It may, and we confirm it for your address before the job is scheduled. The city's submittal list calls for separate permits for patio covers, pools and fencing but doesn't name three season rooms, so the answer comes from the building office. You can ask the city's Building Division plan review staff at 951-736-2250 or BuildingPlanCheck@CoronaCA.gov.
Does a fire hazard zone change how a sunroom is built in Corona?
It can, if your home sits in a Wildland Urban Interface Fire Area, where homes meet wildland, or in a fire hazard severity zone. The city says new construction in those wildland areas must meet the California Building Code requirements for them, and that permit applicants in a Very High zone must meet those standards, with the same standards applying in High zones once a new zone map planned for July 2025 took effect. We check which applies to your lot before we plan the room.
How do I keep sunroom windows and doors working smoothly?
Keep the door and window tracks clean, inside and out, and use a pure silicone spray, not an oil-based lubricant. That's what one sunroom company's care guide recommends to keep doors and windows moving easily.
Other ways we close in outdoor space
Patio enclosures
A good choice when your patio already has a cover and you mainly want walls of screen or glass around it.
Custom sunrooms
For an odd-shaped space or a room plan that a standard layout won't give you.
Book your three season room estimate
Call (951) 281-8086 any day from 8 AM to 9 PM or use the form with your address, room size and any plan to heat it, so I arrive ready to talk about windows and the base.