Three season sunrooms in Long Beach CA - a bright room for spring, summer and fall
Got a patio or deck you hardly use? We close it in as a room you'll use from spring through fall.

- Fully licensed and insured.
- Free in-person estimates.
- We reply within 1 business day.
Is a three season sunroom right for your Long Beach home?
A three season sunroom is an enclosed room built for spring, summer and fall, and here in Long Beach it's a simple way to turn a patio, a deck or a bare back wall into extra living space for those seasons.
Most people who call us have a spot out back they'd use a lot more if it were closed in, and they want to know what it'll take. The price comes down mostly to the room's size, the base it sits on and how it ties into your house, while the schedule turns on how much work the base needs and what the city asks for before we build. If you want the room through winter too, a four season sunroom is the one to compare, and I'll give you your own figure in a written estimate after I've seen the space.
How we build three season sunrooms
We start by asking how you'll use the room through the year, because a three season room suits some people and is the wrong buy for others, and I'd rather tell you that at the first visit. If it fits, we pick the base that suits your yard and budget, get that base ready, tie the room into the wall of your house, then put up the walls, doors and roof and clean up before we go. We keep the build simple on purpose, so the room going up is the room we planned together.
Some jobs start from something you already have. If there's a covered patio you'd like to close in, that's one of our patio enclosures, and when the space has an odd shape or a roofline a standard layout won't fit, we build it as one of our custom sunrooms.
On the deck you already have
A properly supported wood or composite deck is one of the common bases one maker's guide lists, and it suits you if your deck is sound and sits where you want the room. I check how it's supported before we plan anything on top of it.
On a concrete pad with foundation walls
This suits a ground-level patio where you want a solid floor that feels like part of the house. If you already have a slab, we look at whether it can carry the room as it is or needs more under it.
On a pier-and-beam foundation
Piers and beams hold the floor up off the ground, which helps on a yard that slopes or where a full pad doesn't make sense. It's often the easier way to line the room up with a raised back door.
What a three season sunroom takes in Long Beach
The city's Building and Safety Bureau requires permits for most residential construction, and its permit list names patios and additions but doesn't name three season sunrooms, so whether your room needs one is the city's call and not something I'll guess at. Homes in a historic district or the coastal zone can have extra requirements, and in the coastal zone building generally can't start until the Coastal Commission or the local government issues a coastal development permit. The city's Planning Bureau asks people to get in touch early about zoning and historic preservation and can explain limits on what you can build, and I ask about both at the first visit so any extra steps are known before design starts.
We're based in Long Beach and work across the cities around it, and most of the rooms we build go off the back of a house onto a slab patio, an older deck or a bare stretch of yard. The base is the part I look at hardest, and we see the same mix on jobs in Lakewood and Bellflower.
Why Long Beach homeowners call Long Beach Sunrooms & Patios for three season rooms
I do every estimate myself
I come out to every estimate, and our crew lead and installers do the build. The person who planned the room with you is the one keeping an eye on it.
I sold rooms before building them
I started on the sales side and moved to building because I'd seen rooms sold one way and built another, and we've been building since 2021. That's why our plans stay simple and spell out exactly what you're getting.
Licensed and insured for your job
We're fully licensed and insured. Long Beach has a contractor with employees show proof of workers' comp when the permit is issued, so it's fair to ask any contractor you're weighing to show you theirs.
If you're torn between a three season room and a year-round one, that's a question I'd rather answer standing in your yard. Send us a request and we'll set up a time.
Request a quoteGet a written estimate for your three season sunroom
We reply within one business day to set up a visit. The estimate is free, in person and comes with no pressure and no obligation. I come out, measure, look at your base and the wall the room will join, and you get a written estimate after we've talked through the choices.
What happens after you call about a three season room?
Call or send a request
Call (562) 200-7450 or fill out the form, and we'll set a time for me to come out. It helps to tell us your address and the rough size you have in mind.
Measure, check, and decide
I measure, look at the base and the wall the room will join, and we work through the big choices like size, base and doors right there. You get straight answers and one good option, not a list of ten.
Get your written estimate
The written estimate spells out the room, the base and the price, so you know exactly what you're buying before you sign. When the job needs a permit, we handle the paperwork with the city.
Our crew builds the room
Our crew lead and installers build the room from the plan we agreed on, and I check in as it goes. We clean up before we leave.
Frequently asked questions
What is the best way to choose between a three season and a four season sunroom?
Decide whether you'll use the room in winter, because three season rooms usually aren't insulated for winter use and four season rooms are the ones built for it. If you mostly want the room from spring through fall, a three season room is usually the better match, and it's the first thing I'll ask you about.
How much does a three season sunroom cost in Long Beach, CA?
A 200 square foot three season sunroom in Los Angeles County usually costs about $17,000 to $38,000 for the whole job. That's the going range in the area, not a quote from us, and where yours lands depends mostly on the size, the base and how it ties into your house. The written estimate after my visit gives you your own figure.
Who can get a building permit for a sunroom in Long Beach?
Long Beach issues permits to a contractor with a valid California State Contractor's License and an active Long Beach Business License. The owner of a one- or two-family home can also get one under the city's eligibility bulletin, and permits are issued at the city's Development Permit Center.
How much can a contractor take as a down payment on a sunroom in California?
On a home improvement job, the state contractor board caps the down payment at $1,000 or 10 percent of the contract price, whichever is less. Every payment after that has to be listed in the contract and tied to work done or materials delivered, so you pay as the job moves along.
What happens during a three season sunroom installation?
The room goes up in stages, starting from the base and working up to the roof. One maker's kit starts with the floor and wall channels and a mounting rail, then the wall and door panels, then the roof and the gable ends that close in the triangle under it.
How do I take care of a three season sunroom?
Keep the door and window tracks clean inside and out, and keep the weep holes clear so water can drain out of the frames. One installer's care guide suggests a pure silicone spray on doors and windows, since oil-based lubricants tend to attract dirt.
Other ways to add a room
Patio enclosures
Close in a covered patio you already have and get a usable room without starting from the ground up.
Custom sunrooms
For a space with an odd shape, a tricky roofline or a look a standard layout can't give you.
Long Beach, CA
Plan your three season sunroom with us
Call Long Beach Sunrooms & Patios at (562) 200-7450 or send the form with your address and the size you have in mind, and tell us if your home might be in a historic district or the coastal zone so I can check before I come out.




