Patio-to-sunroom conversion in Manhattan Beach CA - a room planned around your slab
Your patio is too exposed to use much of the year. We check the slab first, then plan and build a room you'll really use.

- Licensed and fully insured.
- Free on-site estimates.
- Expect a reply within 1 business day.
Can my patio in Manhattan Beach become a sunroom?
A patio-to-sunroom conversion in Manhattan Beach encloses the patio you already have, so your house gains a sunroom with walls, windows and a roof that you can use in more kinds of weather.
Most people who call me have a patio that's too hot, too bright or too buggy to enjoy for much of the year, and they want a room they'll actually sit in. The price moves with the size of the room, the glass and roof you choose, whether you'll heat or cool it and how much work the slab needs, while the schedule mostly turns on the permit process and any slab repair. Your written estimate after our visit gives you your own figure, and if all you really want is shade, a patio cover may be the simpler answer.
How we handle a patio-to-sunroom conversion
The first thing I'll ask is whether you plan to heat or cool the room, because that changes what kind of project this is, from the paperwork to the walls and glass. Then we look closely at your existing slab and how it meets the house before any design starts, since a room is only as sound as what it sits on. Once the plan is settled, we prepare or repair the slab where it needs it, frame the walls and roof, set the windows and doors, seal everything against the weather and finish the inside so the room feels like part of your house.
Sometimes the space you want to enclose turns out to be wood, and a deck-to-sunroom conversion works differently because we're checking the framing underneath instead of concrete. If you already know you want a room you'll heat and cool for everyday use, our all season rooms are built with that in mind.
Enclosed room without heating
This suits you if you mostly want a sheltered spot for the milder months and don't need it comfortable on cold nights. It's usually the simpler project, because the room isn't being treated as heated living space.
Heated and cooled room
This suits you if you want a den, office or family room you'll use most days in any weather. It takes more planning on insulation, glass and paperwork, so we settle it before design starts.
What a patio-to-sunroom conversion involves in Manhattan Beach
In Manhattan Beach, permits come from the city, which issues them for any remodel, alteration or construction project, but its list names patio covers and decks and doesn't mention sunrooms, so I won't guess about yours. Before work starts, we check with the city about what your conversion needs, then prepare and file the paperwork for any permits it calls for. If your house sits in the city's Coastal Zone, the city says every project there needs a coastal permit unless it's exempted or excluded, so it's worth asking the city early whether yours is.
We're based in Manhattan Beach and work across the South Bay and the cities around it. Many of the patios we look at were poured years before anyone thought of building on them, and lots here sit close together, so we plan access and staging before the first day of work. We see the same kinds of slabs on jobs in Hermosa Beach and Redondo Beach.
Why Manhattan Beach homeowners call Manhattan Beach Sunrooms & Patios for patio conversions
The owner plans every room
I come out to look at every job, measure and plan the room myself, and our own crew does the building. You talk with the person who planned your room, not someone who hands it off.
Licensed, insured and easy to check
We're licensed and fully insured, and you're welcome to look us up with the state licensing board before you sign anything. California requires a current, valid license from the board for anyone contracting on a project that needs a building permit.
Started in Manhattan Beach, 2023
I learned this trade building patio covers and enclosures, then came back to it and started this business here in 2023. I wanted to build rooms the way I was taught, planned with care and finished cleanly, and to treat every house as if it were my own.
Waste recycling planned before demo
Manhattan Beach requires additions and remodels that make a house bigger, including heated or cooled space, to recycle at least 65% of their construction waste. We plan the sorting and hauling before anything comes apart, so it doesn't hold up your job later.
The two questions that shape this job are what your slab can carry and whether you'll heat the room, and I'd rather answer both with you standing on the patio. Tell us about your patio and we'll set up a time. Satisfaction guaranteed on every job.
Request a quoteGet a written estimate for your patio conversion
Thank you for reaching out. Expect a reply within 1 business day to set up a visit, and then I come out myself to measure, check your slab and talk through the room before you get a written estimate. The on-site estimate is free, and there's no pressure to book.
What happens after you call about a patio conversion in Manhattan Beach?
Call or send a request
Call (424) 290-8610 or use the form, and we'll set up a visit at a time that works for you. A few photos of your patio help me come prepared.
I measure and check the slab
I come out myself to measure, look closely at the slab and where it meets the house, and talk through the room you have in mind. Afterward you get a written estimate, so you know what you're getting before you sign anything.
We permit, build and walk through
We take care of the permit paperwork, then our crew builds in stages within the city's usual construction hours of 7:30 AM to 6:00 PM on weekdays and 9:00 AM to 6:00 PM on Saturdays, with no work on Sundays or city holidays. When the room is finished, we walk through it with you before we call it done.
Frequently asked questions
What does a patio-to-sunroom conversion cost near Manhattan Beach?
A sunroom or patio enclosure in the Los Angeles area usually costs about $12,000 to $24,000 per project. That's the going range in the area, not a quote, and the written estimate after our visit gives you the figure for your own patio.
Do I need a permit to enclose my patio in Manhattan Beach?
The city decides that for your address, since its permit list names patio covers and decks but doesn't mention sunrooms. We check with the city before any work starts and file whatever it calls for, including a coastal permit if your house is in the Coastal Zone and the project isn't exempt.
How do I know if my existing patio can hold a sunroom?
You find out by having the slab checked before any design, because not every patio is ready for a sunroom. One sunroom maker's guide has you look at the concrete's thickness, levelness, drainage slope, cracks or settling, how much weight it can carry and how it connects to the house walls. A Milpitas city handout also says to find out whether a slab is post-tensioned, built with steel cables pulled tight inside it, before cutting or breaking it, because cutting one of those cables can be very dangerous and expensive to repair.
Does heating a sunroom make it an addition in California?
It can. An earlier edition of California's energy compliance manual counted enclosing an existing patio and heating or cooling it as an addition, a change that adds heated or cooled floor area to the house. That's why heating is the first thing I ask about, since it can change which rules apply to your room.
What license should my sunroom contractor hold in California?
If your conversion changes footings, foundations, load-bearing walls or the roof structure, you need someone licensed for that work, because California rules say a residential remodeling contractor shall not contract to make those structural changes. When a job needs more than two types of work on a building, a general building contractor may contract for and oversee the whole project, so it helps to know early which parts of the house your room will touch.
How do I take care of a sunroom roof after it's built?
One sunroom company's guide suggests inspecting the roof and gutters once a year and staying off the sunroom roof unless you have a reason to go up. If you'd like a hand with that check, give us a call at (424) 290-8610.
Other rooms we build
Deck-to-sunroom conversion
For a raised wood deck you'd like to close in, where the posts and framing below decide what the new room can be.
All season rooms
For homeowners who want a room comfortable enough to use every day of the year, planned around heating and cooling from the start.
Manhattan Beach, CA
Send us photos of your patio
A few photos and a note on whether you'll heat or cool the room let me arrive at the visit already thinking about the right questions for your house.




