Sunroom contractor in Costa Mesa - a real room where the old patio was
Lightcraft Rancho Santa Margarita Sunrooms builds sunrooms, patio enclosures and patio covers in Costa Mesa, mostly over the concrete patios and tired screen rooms behind the city's older homes, so you get a room you'll actually sit in.

- Fully licensed and insured.
- Free in-person estimates.
- Replies within 1 business day.
Services in Costa Mesa, CA
Patio-to-sunroom conversion
A lot of Costa Mesa houses already have a concrete slab out back, and closing it in is usually the shortest way to more living space. We check that slab first, because a patio pour wasn't always meant to carry walls and glass, and we'll tell you plainly if it needs work underneath.
Patio enclosures
Plenty of older homes here have an aluminum patio cover that's been up for decades and a family that wants to close it in. We look hard at whether that cover can stay, because putting new glass walls under a worn-out roof is like putting new tires on a bent axle.
Custom sunrooms
Odd-shaped yards and older rooflines that don't line up with a stock kit are common here, and that's where a custom sunroom earns its keep. We size the room and its roof to your house so it looks like it came with the place instead of being bolted on later.
Sunroom remodeling
Some backyards here have a screen room or glassed-in porch that someone built long ago and nobody sits in anymore. We open it up, see what's still sound and replace the glass, roof or walls that make it too hot, too drafty or too leaky to use.
Four season sunrooms
On the smaller houses here, a sunroom often has to work as a real extra room, like an office or a playroom, every month of the year. If that's the plan, we build it insulated and closed up like the rest of your house, because a room built only for mild days is hard to make comfortable later.
Patio cover installation
Not every yard needs walls, and on a tight Costa Mesa lot a solid patio cover can give you shade without eating the yard. If you think you'll close it in someday, we plan the posts and roof for that now so you're not tearing it down later.
Costa Mesa, CA properties and local conditions
The most common thing we find behind an older Costa Mesa house is a concrete patio slab with an aluminum cover over it, both put in long before anyone thought about closing them in. A slab poured for patio chairs can be thin at the edges, cracked, out of level or sloped toward the house instead of away from it. I check all of that before we draw anything, because walls and glass set on a slab that moves will crack, leak or stick, and we'd rather add a proper footing than build on a guess.
Which way your backyard faces matters as much as how big the room is. A room with a lot of glass on the west or south side can turn into a greenhouse by afternoon, so we talk through shade, roof type and glass before you choose, since that's far cheaper to get right now than to fix later.
What to know about building a sunroom in Costa Mesa
Building permits here come from the city's Building Safety Division, so that's the office that decides what your sunroom needs and the right place to ask. I find that out before any plans go in, and when a permit applies we prepare the paperwork and pull it as your contractor, which helps your schedule because the city sends incomplete applications back and every round trip costs time. To check us or anyone else, know that California's Contractors State License Board licenses everyone who builds or alters a structure in the state, and a contractor has to hold that license before bidding on your job. We're fully licensed and insured, and since the city's Finance department handles business licenses, it's fair to ask any contractor about theirs too.
The price here mostly moves with the kind of room you pick, how much glass and insulation it takes, how it ties into your roof and whether your slab or old cover can stay. The schedule turns on how quickly we settle the design, the city's review and what we find once the old cover or slab is opened up, and your own figure comes from the written plan and price I give you after seeing the space. Costa Mesa is a regular drive for our crew, and we do the same work next door in Irvine and up the road in Tustin.
Your Costa Mesa sunroom, planned and priced in writing
We get back to every call and form within one business day to set a time that works for you. I come out to your Costa Mesa home, measure, and put the plan and the price in writing. The estimate is free, and there's no pressure to book.
(949) 353-6626What happens after you call us about a Costa Mesa sunroom
Call and talk it through
You call or send the form, and we talk about how you want to use the room, whether that's morning coffee, a home office or somewhere for the kids to spread out. Those answers steer everything after, so expect me to ask a lot of them.
I measure and look around
I come out myself to measure and look at what's there now, whether that's a slab, a deck or an old cover, and it helps if you're home to walk it with me. You get the plan and the price in writing, so you know exactly what you'd be paying for before you decide anything.
Settle the design and paperwork
We settle the design with you, then check what the city's building office and any association will want before anything goes in for review. When a permit applies, we prepare it and pull it as your contractor, and the city's review sets part of the timeline from there.
Build and walk the room
Our own crew of carpenters and installers does the build, with a lead carpenter running the site day to day. When it's done, I walk the finished room with you before we call it done.
Frequently asked questions
Does a sunroom in Costa Mesa need a licensed contractor?
California requires a state-licensed contractor whenever a project needs a building permit, uses employee labor, or has contracts adding up to $1,000 or more in labor and materials, so any sunroom built by a hired crew falls under it. The state licensing board also says a bigger job can't be split into smaller contracts to slip under that $1,000 line. Ask for the license before you take a bid, because contractors have to hold it before they bid.
What happens if I hire an unlicensed contractor in California?
A first offense of contracting without a license is usually a misdemeanor for the contractor, with up to six months in jail, a $500 fine or both. An administrative fine of $200 to $15,000 can come on top of that. For you, it mostly means you're trusting your house to someone working outside the rules, which is a lot to risk on a room this size.
How do I apply for a building permit for a sunroom in Costa Mesa?
Costa Mesa takes permit applications online through its TESSA system, and when a permit applies to your sunroom we prepare and submit it as your contractor. All the application information goes straight into TESSA, the city ignores paper forms and incomplete applications come back, so you can see the details on the city's building permits page. We get everything together before it goes in so it isn't sent back.
Can I get an Insta-Permit for a sunroom in Costa Mesa?
A sunroom isn't on the city's Insta-Permit list, which covers residential HVAC, re-pipe, water heater, EV charger, panel upgrade and re-roof work. Insta-Permits are meant for simple projects with a limited scope, so the Building Safety Division is the place to ask what your room needs. We check that with the city before plans go in.
How much does a sunroom cost in Costa Mesa?
The price comes down mostly to the type of room, its size and what's already in your yard, so I give you a written number after seeing it rather than a guess over the phone. A four season room with insulated walls and roof costs more than a three season room, and lots of glass, a custom roof tie-in or a new footing under an old slab all add to it. Reusing a sound slab, keeping the room simple and choosing a three season room where it fits your plans bring it down.
What is the best way to choose between a three season and four season sunroom for a Costa Mesa home?
Start with how you'll use the room, because that answers the question better than the brochure does. If it's for plants, a few chairs and mild evenings, a three season room makes sense, but if it might become an office or a place the family uses every day, go four season. If you're on the fence, I'd usually lean four season, since a room that's too hot to sit in or can't be warmed up later is a hard thing to fix.
About Costa Mesa, CA
Costa Mesa is a busy, lived-in city, with shops and businesses along the main roads and street after street of homes right behind them. A lot of what we see are older single-story houses that families have added onto over the years, mixed with newer two-story homes and townhomes where the yards are tight.
That makes it a different job from Coto de Caza, where big lots leave room for a large custom room. Here the work is usually about fitting a room onto a smaller yard and joining it to a roof that's been redone or added to before, so careful measuring at the start matters more than picking the biggest room that fits.
Explore the services
Rancho Santa Margarita, CA
Let's plan your Costa Mesa sunroom
Call (949) 353-6626 any day from 7 AM to 10 PM, or send the form, and we'll set up a time to look at your patio before you commit to a room type.




