Four season sunrooms in Twentynine Palms CA - a room you can use all year
Your patio or old sunroom sits empty half the year? We build heated and cooled rooms, planned with your house, so you can use them year-round.
Request an estimate
What makes a sunroom a four season room?
A four season sunroom is a fully enclosed room with all-weather windows that's heated and cooled like the rest of the house, so your Twentynine Palms home gains a room you can use in any month. The heating and cooling is what sets it apart from a three season room, which has no heating or cooling and uses uninsulated windows or screens.
Most people who call us have a patio or an old sunroom they barely use, and they want space that works like a real room. If you're adding brand-new space off the house rather than closing in what's there, that's closer to our sunroom additions work. The price moves with the size of the room, whether it can sit on an existing slab or needs a new foundation, the glass you pick and how the room is heated and cooled. The schedule turns mostly on settling the plans and getting them through the city's review, and my estimate writes up what the price covers and what it doesn't.
How we build four season sunrooms
A four season room has to be planned as part of the house, so the glass, the insulation and how you'll keep it comfortable get decided together, not one at a time. I start by measuring and looking at what the room will sit on and where it meets your wall and roof. Then we work out with you how the room will be heated and cooled before the plans go in, because changing a window package or a heating plan after the permit is filed costs time and money. Our crew builds the base or ties into the one you have, frames the walls and roof, sets the windows and doors, insulates and finishes the inside so it looks and works like the rest of your house.
Not every room needs heating and cooling. If you mostly want shade and a place out of the bugs for part of the year, one of our three season sunrooms skips that work and costs less, and patio enclosures can close in a covered patio you already have. I'll tell you plainly which one fits the way you'll use the space.
Building a four season sunroom in Twentynine Palms
Here, the city's Building and Safety Division issues permits and inspects every structure built or rebuilt in the city, and any contractor who pulls a permit or submits plans there has to hold a City of Twentynine Palms business license. What the city's published information doesn't spell out is which sunroom projects it treats as additions, so we look into that for your room at the estimate instead of guessing. Because a four season room changes the outer shell of the house and adds heating and cooling, state guidance calls for an energy compliance form to go in with the permit application. That's one more reason we settle the glass and the heating and cooling before we file. When we do, we prepare the plans, file them and handle the inspections.
Footings mean digging, and the city passes along the request that anyone digging call 811 at least two days before work starts, so that wait goes into the schedule too. We're based in Twentynine Palms, and we often meet patio slabs poured years ago, older decks and rooflines that weren't built with a room in mind. We see the same mix on jobs in Joshua Tree and Yucca Valley.
- Call (760) 362-8204
- Mon–Fri: 6 AM–10 PM, Sat–Sun: 7 AM–11 PM
- Twentynine Palms, CA 92277
What happens after you call about a four season room?
Call or send the form
Call (760) 362-8204 or use the form, and we'll set a time for me to come out. It helps to know roughly how big a room you're picturing and how you hope to heat and cool it.
I measure and ask questions
I measure, look at the base and the wall the room will join, and talk through how you want to use the room before I write anything. Your estimate spells out what the price covers and what it doesn't, so the big decisions are on paper.
We draw plans and file
Once you say go, we prepare the plans and file them with the city, which gives itself 15 working days to review plans that aren't solar projects. We build that wait into the schedule and handle the inspections.
Our crew builds the room
Our crew builds the room, and I check in on the work as it goes up. When it's done, I walk through the finished room with you.
Why Twentynine Palms homeowners call us for four season rooms
The owner writes your estimate
I'm the one who comes out, measures and writes the estimate, and I check in while our crew builds. The person who heard what you wanted at the kitchen table is the one keeping an eye on it going up.
Building sunrooms here since 2020
We've been at this since 2020, and most of our calls come from Twentynine Palms and the cities around it. I like the odd jobs, like a low roofline or a slab that meets the house in a strange spot, because that's where careful planning pays off.
Fully licensed and insured
We're fully licensed and insured, and you're welcome to ask about it at the estimate. Anyone you let build onto your house should be able to show you that.
If you're weighing a four season room, the best next step is a visit, so send us a request or call (760) 362-8204 and we'll find a time.
Request an estimateGet a written estimate for your four season room
Send the form and we'll reply within 1 business day to set up a free on-site estimate, with no obligation. I come out myself to measure, look at what the room will sit on and talk through how you'll heat and cool it before I write anything up.
- Fully licensed and insured.
- Phone
- (760) 362-8204
- Location
- Twentynine Palms, CA 92277
- Hours
- Mon–Fri: 6 AM–10 PM, Sat–Sun: 7 AM–11 PM
Questions about four season sunrooms in Twentynine Palms
How much does a four season sunroom cost in Twentynine Palms?
Sunrooms in the San Bernardino area usually cost about $16,000 to $115,000 per project. Larger rooms that need a foundation and have heating and air conditioning land toward the top of that range, and a four season room always has heating and cooling. That's the market's range, not our price, and your own figure comes from the estimate.
How is a four season sunroom heated and cooled?
Ductless mini-splits are a popular choice because they heat and cool the room on their own, without new duct runs through the house. The other route is extending your home's system, and we settle which one fits with you before the plans go in.
Does a mini-split in a sunroom need a permit in California?
Yes, state guidance says installing a heating or cooling unit, other than a plug-in room appliance, needs a building permit. New systems also need load calculations, which size the unit to the space, so that sizing gets worked out as part of the plans.
Can I heat and cool a sunroom addition with my existing system?
Often you can, and state guidance says your existing equipment doesn't have to be brought up to the state's energy rules just because it now serves the addition. The system still needs enough capacity to meet minimum requirements, so I look at what you have before we choose between extending it and adding a separate unit.
What is the best glass for a four season sunroom?
Glass with a low solar heat gain coefficient, the SHGC number that measures how much of the sun's heat gets through, is what one window maker's guide points to for hot climates. The lower that number, the cooler the glass keeps the room, so ask for the SHGC on each option you compare and weigh it against the price.
What upkeep does a four season sunroom need?
Plan on a yearly check of the roof and gutters, which is what one sunroom maker's guide suggests. The same guide says to keep door and window tracks clean with a pure silicone spray, since oil-based lubricants tend to pull in dirt, and to keep the weep holes, the small drain openings, clear so water can get out.
Other ways to add a room
Three season sunrooms
A simpler room without heating or cooling, for when you want shelter and a view more than a space you use every month.
Patio enclosures
A way to close in the covered patio you already have, using the cover and slab that are there.
Start planning your four season room
Send photos of the wall the room will join along with your request, and I'll come to the visit with better questions.
Request an estimateCall (760) 362-8204