Sunroom construction in Manhattan Beach CA - a room that stays comfortable in summer
Your patio or deck sits empty half the year because it's too sunny, windy or cold. We build a sunroom you'll actually use.

- Licensed and fully insured.
- Free on-site estimates.
- Expect a reply within 1 business day.
What does it take to build a sunroom in Manhattan Beach?
Sunroom construction in Manhattan Beach turns a patio, a deck or a corner of the yard into a glass-walled room attached to your house, so you can sit out there on the days the sun or the wind would otherwise send you inside.
Most people who call us have a patio or deck they hardly use and want a room they really will. The price mostly follows the size of the room, whether it's a three-season room or an insulated four-season room with heating and cooling, and what it sits on, because a sound slab or deck usually costs less to build on than new footings, the concrete the posts stand on. The schedule turns less on building days than on the permits and inspections between stages, so we check with the city about what your job needs and file the paperwork it calls for, and the written estimate I give you after the visit has your own figure in it.
How we handle sunroom construction
I start with summer comfort, so the plan includes panels that open or another steady way to move air through the room before a single post goes in. Then our crew prepares the site and does the concrete work, the framing and carpentry, the glass and roof, and the electrical, in that order. Each stage pauses for its inspection, and at every one I tell you what comes next, so a quiet stretch on site doesn't leave you guessing.
Not every project starts from a bare patio. If you already have a sunroom that leaks, sticks or feels dated, sunroom remodeling is usually a better place to start than tearing it down. And if what you really want is shade and fewer bugs rather than glass walls, screen room installation gives you an open-air room with less work.
Four-season room
This suits you if you want the room to work as part of the house all year, because it's insulated and has heating and cooling, which makes it a true indoor room. It costs more to build, and it's the right pick when you plan to use the room as a den, an office or a place for guests.
Three-season room
This suits you if you'd rather stay closer to the outdoors, because it uses uninsulated glass and feels more like a sheltered porch with walls. It's the simpler build, and a good fit if you mostly want a comfortable place to sit when the weather is mild.
What sunroom construction in Manhattan Beach has to clear
The city's Building and Safety office issues permits for construction, remodels and alterations, and its list names patio covers and decks but not sunrooms, so whether your room needs a building permit is a question for that office, not a guess. If your house sits in the city's Coastal Zone, the city says projects there need a coastal permit unless they're exempted or excluded, and the California Coastal Commission says building generally can't start until that permit is issued. Before work starts, we check with the city about what your job needs, then prepare and file the paperwork for any permits it calls for. The city also requires an addition that increases conditioned area or size, which a four-season room usually does, to recycle at least 65% of its waste, so we plan how the scrap leaves your site from the start.
We're based in Manhattan Beach and work across the South Bay, and most rooms we plan go over a patio slab or deck behind the house, so the shape that slab or deck is in decides a lot about the job. We see the same kind of project on jobs in Redondo Beach and Hermosa Beach.
Why Manhattan Beach homeowners call Manhattan Beach Sunrooms & Patios to build their sunroom
I plan every room myself
I started this business in Manhattan Beach in 2023, and I'm the one who comes out to measure and plan each room before our own crew builds it. That means the person answering your questions is the person who drew the plan.
Licensed and fully insured
We're licensed and fully insured, and I'm glad to show you the paperwork before you sign. A sunroom brings several trades onto your property, so you should know the people doing the work are covered.
A plain written estimate first
I care most that you understand what you're getting before you sign anything, so the estimate is written out and I'll go through it with you line by line. That's also why we say satisfaction guaranteed on every job, because it only means something when we both agree on what's being built.
What matters most on a sunroom is getting the plan right before the first stage starts. If you'd like to talk yours through, call (424) 290-8610 or send us a request.
Request a quoteGet a free on-site estimate for your sunroom
We reply within one business day to set up a visit, and there's no pressure to book. I come out to measure and look at your patio or deck, and then you get a written estimate you can take your time with.
What happens when you call us to build a sunroom in Manhattan Beach?
Call or send a request
Call (424) 290-8610 or fill out the form, and we'll set a time for me to come see your patio or deck. We take calls seven days a week.
I measure and plan on site
I come out myself to measure, look closely at what the room will sit on and talk through the room you have in mind. You then get a written estimate, so you can see what you'd be paying for before you sign anything.
We file permits and build
We take care of the permit paperwork, then build in stages with pauses for each inspection. The city allows construction during set hours on weekdays and Saturdays, not on Sundays or city holidays, so our work days follow that.
We walk through it together
When the last stage is done, I walk through the finished room with you before we call the job complete. That's your chance to open every panel and ask about anything that doesn't look right.
Frequently asked questions
How much does sunroom construction cost in Manhattan Beach?
A sunroom addition in the Los Angeles area usually costs about $23,000 to $66,000 per project. That's a general estimate for the region, not our price, and a four-season room with heating and cooling tends to sit higher than a three-season room. The written estimate after my visit gives you the figure for your own room.
Will a sunroom get too hot in the summer?
It can, if there's no way to let air through it. One sunroom maker's guide notes that a sunroom holds summer heat and can get quite uncomfortable without enough panels that open or enough airflow. That's why we plan the airflow into the room before we build, as I described above.
How long does it take to build a sunroom?
Longer than the building days alone, because a sunroom goes up in stages with waits in between. One sunroom company's guide tells owners to expect gaps between the concrete work, the carpentry and the electrical and building inspections. Plan for a project that pauses and picks back up rather than one straight run.
What kind of contractor builds a sunroom in California?
A sunroom is the kind of job California's contractor law treats as general building, which covers structures that shelter and enclose people or property and take at least two unrelated trades to build. A sunroom brings together concrete, framing, glass and electrical, so it's more than one trade's job. It's fair to ask anyone you're considering how they handle all of it, us included.
How do I take care of a sunroom once it's built?
A yearly check of the roof and gutters is the main thing, and one sunroom company's guide suggests doing it once a year. Those are the places water collects, and a clogged gutter or a loose seal is far easier to fix early than a leak later.
Can you build a sunroom over my existing patio or deck?
Often, yes, since a sunroom built over a deck or patio slab is a common kind of project, sometimes called a patio enclosure. Whether yours can carry one depends on its condition and how it was built, and that's what I check closely at the estimate visit.
Other work that often comes up with a sunroom
Sunroom remodeling
For an older room with failing seals, worn panels or a layout that no longer suits how you live.
Screen room installation
For an open-air room with a roof overhead and screens that keep bugs out while the breeze comes through.
Manhattan Beach, CA
Send photos of your patio or deck
A few photos and a sense of whether you're leaning toward a three-season or four-season room help me come to your visit with the right questions.




