Sunroom contractor in Norwalk, CA - rooms built on the patio you already have
South Gate Sunrooms & Patios is a sunroom contractor working in Norwalk, CA. We build sunrooms, patio enclosures and patio covers, turning the slab, deck or old porch out back into a room you'll actually sit in.

Tract houses and backyards across Norwalk
Norwalk is mostly houses, a lot of them single-story postwar tract homes on regular lots with a concrete patio or a small deck out back. Plenty still have an aluminum patio cover somebody put up decades ago. It's a short drive east of us in South Gate, and the calls from here sound alike. The patio is there, it gets used twice a year, and the homeowner wants a real room out of it.
We do the same work across the cities around South Gate, from Walnut Park out to here. On a tract house the room has to work with a low roof line and a slab poured for a patio, not a room, so that's where we start.
What to know before a sunroom goes up in Norwalk
On a Norwalk job, the first thing we sort out is which building office handles your address, because some of the places we work have their own and some are county areas. We take care of the permit steps with that office and tell you early if plans or a review have to come first, since that's usually where the wait is. Before you hire anyone for a room like this, look up their contractor license with the state licensing board. We're licensed and fully insured, and I'm glad to go over our license details when I come out.
What moves the price here is mostly what's already out back. A slab that needs new footings, an old cover that has to come down, an insulated roof instead of glass, more windows or power run out to the room all add to it, and size adds to everything. The schedule turns on the permit steps and on how much work the base needs before the walls go up. Your written estimate spells out what's in it and what isn't, so you're not guessing. We work just as often next door in Downey, and the houses there ask the same questions.
Services in Norwalk, CA
Patio-to-sunroom conversion
Most Norwalk backyards already have a concrete patio, and that's often the cheapest place to start a room. Our patio-to-sunroom conversion work keeps what's good about it and builds walls and a roof that tie into the house properly.
Patio cover installation
A lot of the aluminum covers on these houses have been up for decades and sag where they meet the house. We take the tired one down and put up a new cover, which is the right call when you want shade and not a whole room.
Screen room installation
If you mostly want to sit out back in the evening without the bugs, a screen room does that for less than a glassed-in room. We build it on the patio you have, with a roof that ties into the house so it doesn't drip at the seam.
Four season sunrooms
When you want a room you'll use all year, like a den or a spot for the grandkids, it needs insulated walls, a solid roof and real windows. We build four season rooms that way, which is the difference between a room and a hot porch.
Deck-to-sunroom conversion
Some houses here have a raised wood deck instead of a slab, and a deck built for a grill usually isn't framed to carry a room. We check the posts, beams and footings first and rebuild what won't hold before the room goes up.
Sunroom remodeling
Older patio rooms on these tract houses often leak where the roof meets the house or run too hot to use. We fix the tie-in, swap the glass or panels, and turn a room you avoid back into one you sit in.
What Norwalk tract houses ask of a sunroom
Most back slabs here were poured to stand on, not to hold up a room, so I check the thickness, the edges and any cracks or settling before we plan anything. If the slab won't carry the walls, we add footings or rebuild the edge rather than set a room on concrete that'll move under it. Older patio covers get the same look, because a cover bolted to the fascia years ago usually isn't something to build on.
The other thing is which way the back of the house faces. A glass roof on a wall that takes the afternoon sun makes a room nobody sits in until dinner, so on most of these houses I'll steer you toward a solid insulated roof with good windows, even if the glass looks better in the brochure.

Get a free sunroom estimate for your Norwalk house
Send the form and we'll reply within one business day to set a time. I come out to your Norwalk house myself, look at the slab, deck or wall the room ties into, and ask how you plan to use it. The estimate is free, it's done on site, and there's no obligation.
Working with us in Norwalk
Call or send the form
Call (213) 376-0861 or use the form, and we'll set a time for me to come out to Norwalk. Plan to be home for it, because how you'll use the room matters as much as the patio.
I look at the base
I check the slab, deck or wall the room ties into before I put a number on paper. You get a written estimate that says what's in it and what isn't.
Permits first, then the build
We handle the permit steps with the office that covers your address, and our own crew builds the room. I check on the work as it goes up.
Walk the finished room together
I walk the room with you before we call it done, opening the doors and windows and looking at where the roof meets the house. Satisfaction guaranteed.
Norwalk sunroom questions answered
Does a sunroom contractor in Norwalk need a California license?
Yes, for almost any sunroom job. California requires a state contractor license from anyone who contracts for work that needs a building permit, who uses employees on the job, or whose work comes to $1,000 or more in labor and materials combined. A room built by a crew hits at least one of those, so look up the license with the board before you sign.
Which small jobs in California don't need a licensed contractor?
Only jobs under the minor work exemption, which the board limits to work under $1,000 in labor, materials and all other costs combined, with no building permit, no employees and no advertising as a licensed contractor. That limit used to be $500 and is now $1,000. Patching a screen might fit under it, but a room or a patio cover put up by a crew doesn't.
Can I build my own sunroom in Norwalk without a contractor license?
You may be able to, because the board says owner-builders can be exempt from the state license. That covers owners building or improving existing structures on their own property who do the work themselves or use their own employees paid in wages. It's a real option if you have the time and the tools, and if you don't, that's what we're for.
How do I check my Norwalk address for earthquake hazard zones?
Type your address into EQ Zapp, the state's online map, and it shows whether your property sits in any of the state's mapped earthquake hazard zones. It also tells you if the state hasn't evaluated your area yet. If something comes up, mention it when I come out, since it's good to know before we plan what the room sits on.
How much does a sunroom cost in Norwalk?
Your price comes down to the room's size, its roof and walls, and how much work the slab or deck needs before anything goes on it. A screen room on a sound slab sits at the low end, and an insulated four season room on a base that needs new footings sits at the high end. You get your own number in a written estimate after I've looked at what the room ties into.
How long does it take to get a sunroom built in Norwalk?
Most of the wait usually comes before the build, while the permit steps and any plans or reviews get done. After that, the schedule mostly depends on how much the slab or deck needs before the walls go up. The estimate visit is when I can tell you what your base needs.
Get your Norwalk sunroom estimate and license details
Call (213) 376-0861 or send the form, and ask for our license details so you can look them up with the state board before you sign anything.





