Three season sunrooms in Seal Beach, CA - a glass room built for salt air
Got a patio you'd use more if the wind and salt air stayed outside? We'll build a glass room that fits your house.

- Fully licensed and insured.
- Free estimates at your property.
- Expect a reply within 1 business day.
Is a three season sunroom right for your Seal Beach patio?
A three season sunroom is a glass-enclosed room added to your house without insulation or a heating and cooling system, and in Seal Beach it turns your patio into a bright, sheltered room you can use for most of the year.
Most people who call Seal Beach Sunrooms & Patios live in Seal Beach or one of the cities around it and have a patio or deck they'd use more if the wind and the damp stayed out. A three season room makes sense when you want light and shelter more than a heated room, and if all you're after is keeping bugs out, screen room installation may be the simpler answer. The price moves with the room's size, the finishes you pick, what kind of foundation it needs and whether you want it ready for heat later, while the schedule mostly turns on permits, any coastal review and the shape your slab is in. Your written estimate puts your own figure on those choices.
How we build a three season sunroom
I start by looking at your house, the patio or deck and how you want to use the room, and even if you don't want heat now, I ask whether you might later, because that changes what goes into the walls and roof from the start. Insulated windows and insulation in the walls, floor and roof go in much more easily while the room is being built, and adding them afterward can often cost more. Then our crew sets the frame and ties it into the house, and we use tempered glass in the panels, which one sunroom maker notes breaks into harmless rounded bits where regular glass leaves jagged shards. We also keep metals that don't get along apart at the joints, because near salt water, aluminum paired with the wrong fastener can corrode fast right where they touch, so we use compatible metals or put a non-conductive separator between them. Last, we seal every joint and clean up the site.
A three season room is one way to close in outdoor space. Some homeowners are better served by one of our patio enclosures, which work around the patio cover you already have, and others want a room shaped around an odd corner or a roofline, which is where our custom sunrooms come in.
Glass on your existing patio slab
This suits a sound slab and a homeowner who wants the room up with the least ground work. We check the slab first, because not every patio is ready to carry glass walls.
A room on new footings
This suits a deck, a cracked slab or a room bigger than the patio you have now. It costs more and takes longer, but the room sits on ground made for it.
Insulated now, heated later
This suits anyone who thinks they'll want the room warm in winter someday. We put in insulated windows and wall and roof insulation while we build, so adding heat later doesn't mean tearing into a finished room.
Building a three season sunroom in Seal Beach
Coastal review can be part of planning a sunroom here. A staff report from the state's Coastal Commission notes that Seal Beach has no certified Local Coastal Plan, and the commission takes coastal development permit applications online for areas without one. We find out what the city and any coastal review will ask for, pull the permits the job calls for and set up the inspections, so you're not chasing paperwork, and we sort that out before we set a build date.
The ground matters too. Most Orange County cities fall in a high earthquake design category, and some areas have expansive soil, the kind that swells when it's wet and shrinks as it dries, so I look hard at what your room will sit on and how it ties into the house before anything is final. We see the same older slabs and stucco walls on jobs in Huntington Beach and Westminster, and we plan for them the same way.
Why Seal Beach homeowners call Seal Beach Sunrooms & Patios for three season rooms
The owner on every estimate
I come out to look at the job and write the estimate myself, then I work alongside our crew on the build. You talk to the same person from the first sketch to the final walk-through.
Adding rooms since 2020
We've been in business since 2020, six years now, and I came to it from framing new houses before switching to rooms added onto homes people live in. That switch taught me to look hard at your stucco, your old patio and your yard before we build anything.
Fully licensed and insured, every job
We're fully licensed and insured. If you're lining up bids, it's fair to ask every contractor to show you the same.
Rooms that fit Seal Beach houses
Most of our calls come from Seal Beach and the cities around it, from owners with a patio or deck they want to use more. We plan the room around the stucco walls and older patios we see here, so it looks like it came with the house.
When you're ready to talk it through, send us your details or call (562) 200-7987, and I'll come look at your patio. Your satisfaction, guaranteed.
Request a quoteGet a written estimate for your three season sunroom
Send the form and we'll reply within one business day to set a time for me to come out. The estimate is free and done at your property, and you get it in writing with the options we sketched together. There's no pressure and no obligation to go ahead.
What happens after you call about a three season room in Seal Beach?
Call or send the form
Call (562) 200-7987 or use the form and tell us a little about your patio or deck. We'll set a time for me to come out to your house.
I visit and sketch options
I look at the house, the patio or deck and how you want to use the room, and I sketch the options with you right there. Photos and a rough room size help, but I'll measure while I'm there.
Read your written estimate
You get a written estimate showing what the room you picked will cost, so you can weigh the choices before you sign anything. Once you're ready, we take care of the permits the job calls for.
We build, then walk through
Our crew and I build the room, with me on site working alongside them. When it's done I walk the room with you and show you how to look after it.
Frequently asked questions
What is the difference between a three season sunroom and an all season room?
An all season room ties into your house with insulation, electricity and heating and cooling, while a three season room is glass enclosed without insulation or a heating and cooling system. If you think you'll want the room warm someday, say so at the estimate, because that choice is easiest to settle before we build.
How much does a three season sunroom cost in Seal Beach?
A three season room across the US usually costs about $8,000 to $50,000 per room, and that's the market's range, not our price. Size, finishing options and the foundation decide where a room lands, and larger rooms that need a new foundation sit toward the higher end. Your written estimate gives you your own figure.
How do coastal development permits work in Seal Beach?
Applications go to the California Coastal Commission, which takes them online for areas without a certified Local Coastal Program, and a commission staff report notes Seal Beach has no certified plan. Whether your room needs one is something we work out with you before we build, along with what the city asks for.
How much can a contractor ask for up front on a sunroom in California?
California's contractor licensing board caps a home improvement down payment at $1,000 or 10 percent of the total contract price, whichever is less. Any later payments have to be listed in the contract and tied to work completed or materials delivered.
How do I take care of a sunroom near the beach?
Rinse the frame and other exposed surfaces with fresh water regularly, because that dramatically slows the buildup of chloride, the salt that eats at metal. It matters most where metals meet, which is why we keep them apart at the joints in the first place.
How do I know if my patio slab can be cut for a sunroom?
Find out first whether it's a post tension slab, one with steel cables pulled tight inside the concrete, because cutting one of those cables can be very dangerous and expensive to repair. One California building department advises checking before anyone saw cuts or breaks a slab, and we check before any saw touches your patio.
Other ways to close in your patio
Patio enclosures
Worth a look if you already have a sturdy patio cover and want walls and windows added under it.
Custom sunrooms
For a room that has to follow an unusual roofline, corner or layout that a standard design won't fit.
Seal Beach, CA
Book your three season sunroom estimate
Call (562) 200-7987 or send the form with the room size you picture and a few photos of your patio or slab, so the visit starts with your ideas already in hand.




