Sunroom contractor in Torrance, CA - rooms planned around the ground they sit on
Long Beach Sunrooms & Patios is a sunroom contractor based in Long Beach, CA. We build sunrooms, patio enclosures and patio covers for Torrance homeowners who want more usable room out of a patio, deck or back wall.

- Fully licensed and insured.
- Free in-person estimates.
- We reply within 1 business day.
About Torrance, CA
Torrance is mostly houses with backyards, and a lot of our calls here start with a slab patio, a wood deck or a sliding door that opens onto space nobody uses much. Some homeowners want a bright room the family can live in, others just want a covered spot out of the sun, and plenty are deciding between the two when I show up. We hear the same questions next door in Lomita and Gardena.
Some lots here sit flat and some sit on a slope, and that shapes the job before we ever talk about glass, because the ground decides what the room needs under it.
Services in Torrance, CA
Four season sunrooms
A lot of Torrance families want a room off the back of the house they can use like any other room, and a four season sunroom is the one I'd point them to. We build it insulated and tied into your house so you can heat and cool it.
Patio-to-sunroom conversion
Many houses here already have a slab patio out back, which makes it the natural spot for a new room. We check whether that slab can carry walls and a roof, and we tell you straight if it needs a new footing first.
Deck-to-sunroom conversion
Raised wood decks are common on the sloped lots, and they make a good base for a room only if the framing and footings are up to it. We open it up, check what's there and rebuild whatever has to carry the new walls.
Patio enclosures
If your covered patio collects leaves and dust you're tired of sweeping, an enclosure closes it in without the cost of a full room. We fit the panels to the cover you already have when it's sound, so you're not paying to replace what still works.
Patio cover installation
Some yards here need shade over the patio before anything else, and a cover is the simplest way to get it. We set the posts on footings sized for the ground, so the cover can become part of a room later if you want one.
Sunroom additions
When there's no patio worth keeping, a sunroom addition goes on a new foundation of its own off the back of the house. We pour that base for the room it has to carry, so the floor lines up with the rest of your house.
What we know about getting a sunroom built in Torrance
When a sunroom needs a permit in Torrance, it goes through the city's Building and Safety Division, and before that application goes in, the Planning or Environmental Division has to give zoning clearance, so that's the first thing on our schedule. Plans now go in electronically, paper isn't accepted, and you can follow the status on the city's online citizen portal. When your job needs a permit, we pull it and handle the paperwork, including the separate applications the city wants for any electrical, mechanical or plumbing work. Before you hire anyone, ask for their state contractor license and their Torrance business license, and the questions below cover when each one applies. We're fully licensed and insured.
The price here turns mostly on the room itself, meaning its size, whether it's a four season room you heat and cool or a lighter enclosure, how much glass it has, and how much work the patio or deck under it needs. The schedule turns on the city's permit review and on that base work, since nothing goes up until the foundation is right. We plan rooms the same way in Downey and back home in Long Beach, and the written estimate after my visit gives you the figure for your house.
Torrance, CA properties and local conditions
The city has tightened its foundation rules because of expansive soil here, the clay kind that swells and shrinks as its moisture changes, and it ties stricter soil checks to the nearby earthquake faults and the hillside parts of the city. For your house, that means an old patio slab can crack or shift, and a room built on top of it passes that movement into the frame and the glass. I look closely at the base at the first visit, and we plan the foundation the room needs instead of hoping the old slab holds.
The wall the room joins matters as much as the ground. On a lot of houses we see, the back wall has a slider, a window or a roof edge in a spot that changes how the new roof ties in, so we draw the room around that wall from the start.
Get a sunroom estimate for your Torrance home
We reply within one business day, and the estimate is free, on-site and comes with no pressure and no obligation. Once you send the form, we get back to you to set a time, I come out to your Torrance house to measure and look at the base and the wall the room will join, and then you get a written estimate.
What happens after you call us about a Torrance sunroom
Call or send a request
Call (562) 200-7450 or use the form, and we'll set a time for me to come to your house. Plan to be home, since the big choices get made at that visit.
I measure and check the base
I measure, look at the slab or deck the room will sit on and the wall it'll join, and we work through the choices on the spot. You get a written estimate afterward, so you know exactly what the room includes before you decide anything.
We handle the permit paperwork
When your room needs a permit, we pull it and work through the city's steps covered above, so you don't have to. Building starts once the city's review is done.
Our crew builds your room
Our crew lead and installers build the room we planned together, and I check in on the job as it goes. If something under the old patio looks different once it's open, we talk it through with you before going on.
Frequently asked questions
How do I get a permit for a sunroom in Torrance?
You apply through the City of Torrance's Building and Safety division, which handles permits for construction projects. When your job needs one, we pull it and deal with the division for you. If you want to ask about your own address first, that's the place to start.
What work is exempt from a building permit in Torrance?
A draft city ordinance lists mostly small and finish work as exempt, such as small detached sheds and playhouses, low fences, and painting, tiling, cabinets and countertops. A city staff report says the changes make that list stricter than before to fit local conditions. A room tied into your house is something we check with the city at the start rather than assume.
When does a sunroom contractor need a state license in California?
A contractor needs a license from the Contractors State License Board when the project needs a building permit, uses any additional workers, or when labor and materials on one or more contracts for the project come to $1,000 or more. The board also says a bigger job can't be split into smaller contracts to stay under that amount. A sunroom job is well past that line, so ask any contractor for their license before you sign.
Does a contractor need a Torrance business license to work on my house?
Yes, the city requires a business license for anyone whose company is in Torrance or who will physically work there, which includes contractors based in other cities. It also covers anyone using their own vehicles to deliver into Torrance. It's a fair thing to ask about when you're comparing contractors.
How much does it cost to add a sunroom in Torrance?
You'll get the figure for your room in a written estimate after I've measured and looked at the base, because no two Torrance lots need the same work under the room. Choosing a lighter enclosure over a four season room, or keeping a sound slab instead of pouring a new one, are the two choices that bring the price down most. I'd rather give you one clear number for the room we planned than a range that fits nobody.
How do I find out if my Torrance address is in an earthquake hazard zone?
Look up your address on the California Geological Survey's EQ Zapp map, which shows whether it lies within a mapped earthquake hazard zone. It also tells you if the survey hasn't evaluated the hazards in your area yet. That's worth knowing before we plan the foundation, so bring it up at the first visit.
Service areas
Long Beach, CA
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Downey, CA
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Carson, CA
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Paramount, CA
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Lakewood, CA
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Lynwood, CA
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Bellflower, CA
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Gardena, CA
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Compton, CA
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Signal Hill, CA
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Lomita, CA
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Explore the services
Sunroom additions
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Four season sunrooms
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Three season sunrooms
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Patio enclosures
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Custom sunrooms
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Sunroom construction
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Sunroom remodeling
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Screen room installation
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Patio-to-sunroom conversion
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Deck-to-sunroom conversion
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All season rooms
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Enclosed patio rooms
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Solarium installation
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Patio cover installation
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Sunroom design
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Vinyl sunrooms
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Long Beach, CA
Plan your Torrance sunroom with one visit
We pick up any day from 7 AM to 11 PM, so you can call (562) 200-7450 while you're standing on the patio you want to close in.




