Four season sunrooms in Corona CA - a room you can use every month of the year
If your patio sits empty through hot afternoons and cool evenings, we build a sealed room with its own heating or cooling for year-round use.
What is a four season sunroom, and what does one involve in Corona?
A four season sunroom is a glass-walled room with its own heating or cooling, which sets it apart from simpler sunrooms that have neither. We build them for homes in Corona, CA, so a patio you only use a few months a year becomes a room you can sit in through summer and winter.
Most homeowners who call us have a patio or cover off the back of the house that's too hot in the afternoon and too cool on winter nights, and some of those jobs start as a patio-to-sunroom conversion. The price mostly moves with the room's size, the frame and glass you choose, and whether the room joins the house like an addition or stays closed off behind your existing doors. The schedule mostly turns on the city's plan review, so we check what Corona's building office needs for your address and prepare the permit paperwork when your job calls for one. Your written estimate spells out the room type, the materials and what's included, so you know what you'd be paying for before you agree to anything.
What happens after you call us about a four season sunroom in Corona?
Call or send the form
Give us your address, and we'll set a time for me to come out, look at the space and take measurements. I come out myself, because I'm the one who stays on the job once it starts.
Get a written estimate
You get an estimate in writing that shows the room type, the materials and what's included, so the price isn't a single number you have to take on trust. Before we schedule anything, we check what the building office expects for your address.
Send complete plans for review
When your job needs a permit, we prepare the paperwork for Corona's Building Division, which lists review for room additions at 10 business days for a first submittal and 5 for each one after. The city won't take plans into review with a required item missing, so we send a complete set the first time and review isn't held up waiting on us.
Build and walk through together
Our installers and I build the room together, so the person who planned it is on site while it goes up. When it's done, I walk through the finished room with you before we call it complete.
How we build a four season sunroom
I start by asking how you want the room to meet the house, because that choice shapes everything after it. Some four season rooms keep your existing doors and windows in place as a divider, which keeps the room's heat and cold apart from the house, while others open up and join the home like any room addition. We'd suggest settling this at the first visit rather than partway through the plans, since it changes the drawings, the price and how the room feels to live with. From there I measure, and we draw the plans to suit your lot, using the climate zone the city lists for Corona, which is 10, and the state's wildfire building rules if your home sits in a mapped fire area. Then our installers and I put up the frame, set the glass and seal the joints, because a room is only as good as how well it's sealed.
Not everyone needs a room they can heat or cool. A three season sunroom is the simpler build without heating or cooling, for homeowners who mostly want shelter in the milder months, and patio enclosures close in the patio you already have. I'm glad to lay both out next to a four season room at the estimate so you can weigh them.
Get a written estimate for your four season sunroom
We reply within one business day to set a time for me to come out, look at the space and measure. The estimate is free, done on site and given to you in writing, with no pressure and no obligation to go ahead.
Four season sunroom questions from Corona homeowners
How much does a four season sunroom cost in Corona, CA?
A 200 sq ft four season sunroom in Riverside County usually costs about $30,000 to $60,000 for the whole job. A larger room, upgraded frame and glass, or joining the room to the house instead of keeping your doors as a divider pushes it toward the top, and your written estimate gives your own figure.
Does a sunroom contractor need a license in California?
Yes, California requires a current license from the Contractors State License Board for contracted work worth $1000 or more in combined labor and materials, which takes in any sunroom. When a building job needs more than two types of work, the board finds it appropriate for a licensed general building contractor, known as a "B" contractor, to oversee the whole project.
What changes for a sunroom if my Corona home is in a fire hazard zone?
Corona requires new construction in a Wildland Urban Interface Fire Area to meet the California Building Code's wildfire construction rules, and the fire department applies the same rules to permit applicants in Very High Fire Hazard Severity Zones. The department said it would extend them to High zones under its newer map, so we check your address against the city's fire hazard zone maps before the plans are drawn.
What is the best way to keep a Corona sunroom permit from being held up?
Send a complete set of plans the first time, because the city refuses plans with a required item missing and every resubmittal starts another review. For a room addition that includes two sets of Title 24 energy calculations, California's energy paperwork for new rooms, with the compliance forms shown on the plans, and we put those together before anything goes in.
How do I compare aluminum frames for a four season sunroom?
Ask whether the frame is thermally broken, with a strip that doesn't conduct heat set between two pieces of metal. One sunroom contractor explains that this strip stops heat and cold from moving through the frame, which matters in a room meant to be used in every season.
What should I ask for when comparing sunroom bids in Corona?
Ask each contractor for proof of state and city licenses and workers' compensation coverage, since Corona's room addition rules require it of all contractors and subcontractors. We're licensed and insured and glad to show proof, so you can set our bid beside the others with nothing left to guess.
Other rooms we build in Corona
Three season sunrooms
If you mostly want shelter from sun and wind and can do without heating or cooling, this is the lighter, simpler room.
Patio enclosures
When you'd rather close in the patio and cover you already have than build a new room, an enclosure works with what's there.
Request your four season sunroom estimate
Call (951) 281-8086 or use the form with your address, the room size you picture and whether it should stay closed off from the house, so I can check the city's rules for your lot before I come out.