All season rooms in Calabasas CA - a room you can heat, cool and use every month
Your patio or old sunroom sits empty half the year. We build an insulated, heated and cooled room you'll use every month.

Is an all season room worth it over a three season room?
An all season room in Calabasas, CA is a sunroom tied into your house's existing construction, with insulation, wiring and its own heating and cooling, so it stays comfortable in August heat and on cold winter evenings. Those built-in systems are what set it apart from a simple glass enclosure, and they're what you're paying for.
Most people who call me have a patio, a deck or a tired old sunroom that's too hot in summer and too chilly at night, and they want a room they'll actually sit in. The price moves mostly with the room's size, the materials and what it sits on, and the insulation, wiring and heating and cooling add work a three season room doesn't need, so it's worth being sure you'll use the room that way. The schedule usually turns on the city, because Calabasas generally requires a building permit for work that changes a home's structure, systems or footprint, so we find out what your address needs and take care of the permit paperwork when there is one. Your written estimate gives you the numbers for your own house once I've measured.
What happens when you call about an all season room in Calabasas?
Call us to set a visit
Call (747) 204-7155 or send the form, and we'll find a time that works for you. I come out myself to look at the house, measure, and ask how you plan to use the room.
Get a written estimate
You get a written estimate that shows how the room size, materials and foundation shape the price, so you can see where the money goes before you decide. Before anything gets built, we also look into what your address means for the plan, like the fire zone and the city or county steps.
We build, then walk through
Our crew does the building and I stay close to the job, with room in the schedule for the city inspector, who generally needs to see the work before it's covered up. When it's finished, we walk through the room together.
How we build an all season room
We plan the insulation, wiring and heating and cooling from the first meeting, because they shape the walls and roof and they're much harder to add once the room is framed. Early on we also settle whether the room opens right into your house or stays closed off behind a door on its own temperature control, since that changes how the heating and cooling is set up. Then our crew builds the foundation or readies the existing base, frames the room, runs the wiring, insulates, closes it in with glass, finishes the inside and cleans up. Along the way I'll keep telling you plainly whether the all season version is earning its cost for how you'll use the room, and I'll say so if a three season room fits you better.
Some homeowners find during that first talk that they want something a little different. If you mostly want the patio sheltered and closed in without the full heating and cooling, our enclosed patio rooms are a simpler build, and if you're after light coming in through a glass roof, solarium installation is the closer fit.
Get your all season room estimate
We reply within one business day to set up a free visit, and I come out myself to measure and talk through how you'll use the room. There's no obligation and no pressure to book.
Questions about all season rooms in Calabasas
How do I choose between an all season room and a three season room?
Choose an all season room if you want to heat and cool it and use it every month, and a three season room if glass walls and a roof are enough for the months you'll be out there. A three season room is enclosed with glass but has no insulation or heating and cooling, so it's a simpler build, though it runs warm on hot days and cool at night. I'll ask how you plan to use the room and tell you which one I'd pick.
How much does an all season room cost in Calabasas, CA?
A fully insulated, year-round sunroom in the Los Angeles area usually costs about $18,000 to $79,000 for the whole project, and that's the area's usual range, not our quote. Where a room lands depends mostly on its size, the materials and the foundation. Your written estimate after I measure gives you the figure for your house.
What city steps come with an all season room in Calabasas?
In Calabasas, the city's Planning Division reviews a project first to see how it fits the city's code and which planning applications it needs, and residential additions under 500 square feet go to a public hearing. Homes in a high or very high fire hazard zone may also face added building code rules and defensible space requirements, and you can look up your own address on the city's fire hazard zone map. We work through these steps for your address and keep you posted.
How much can a contractor ask for up front on a sunroom in California?
Under California's contractor rules, a down payment can't be more than $1,000 or 10 percent of the total contract price, whichever is less. Every other payment has to be listed in the contract and match work done or materials delivered, so you pay in steps as the room goes up.
How do I know if my deck or patio can hold an all season room?
If your deck or patio is level, a prefab sunroom kit can sometimes attach to it, while a room built on site needs a proper building foundation of its own. That foundation is a big part of what moves the price, so I look at what you have when I come out and tell you which way makes sense.
Do I need a licensed contractor to build a sunroom in California?
In most cases yes, because California requires most construction work to be done by a licensed contractor. In certain cases a homeowner can get a permit as an owner-builder, but the limits on that are strict. We're licensed and fully insured.
Other rooms you might weigh
Enclosed patio rooms
A good fit if you want your patio sheltered and usable most of the year without the full heating and cooling setup.
Solarium installation
Worth a look if you want as much daylight as you can get, with glass reaching up into the roof.
Start planning your all season room
Call (747) 204-7155 or use the form, and have your address, a few photos of your deck or patio and the room size you have in mind, so the first visit goes straight to your options.




