Deck-to-sunroom conversion in Manhattan Beach CA - a room your deck is built to carry
Is your deck sitting empty most of the year? We check its framing first, then turn it into a room you'll really use.
- Licensed and fully insured.
- Free on-site estimates.
- Expect a reply within 1 business day.
Can you turn my deck into a sunroom?
A deck-to-sunroom conversion in Manhattan Beach puts walls, windows and a roof over the deck you already have, so it becomes a room you can sit in when the wind picks up or the evening turns cool.
Most people who call us have a deck that gets used a few weekends a year and would rather have a room they use every week. The two things that move the price and the schedule most are the kind of room you pick and the shape your deck is in. A room with heating and cooling asks more of the deck than a simpler three-season room, and a deck that needs more support underneath adds work before the walls go up. I give you a written estimate after I've seen the deck in person, and if your outdoor space is at ground level, a patio-to-sunroom conversion may suit it better.
How we handle a deck-to-sunroom conversion
I start under the deck, not on top of it. A deck built for chairs and a grill may not be strong enough to carry walls and a roof, so the first thing I check is the framing, meaning the posts, beams and joists that hold the floor up, along with how the deck ties into your house. Then we settle the room type with you, because that decides how much the deck has to hold. Our crew adds support wherever the deck needs it, sets the walls along the floor, puts the roof on and finishes the inside so the room feels like part of your home.
If you want the room comfortable in every season and open to the rest of the house, take a look at our all season rooms, since that's the kind of room many deck owners end up choosing. If you'd like to compare a room built over a deck with one built over a slab, our enclosed patio rooms show the ground-level version of the same idea.
Three-season room on your deck
This suits you if you want shelter from wind, chill and bugs for most of the year without heating or cooling the room. It skips the insulation and heating and cooling work, so it asks less of the deck underneath.
Four-season room open to the house
This suits you if you want a room you can use on cold mornings and warm afternoons alike, treated as part of the house. It carries insulation and heating and cooling, so the deck has to hold more and the plans take more care.
What shapes a deck-to-sunroom conversion in Manhattan Beach
If your house sits inside the city's Coastal Zone, Manhattan Beach requires a coastal permit for the project unless it's exempt or excluded, and which of those applies to your job is something the city settles for your address, not something I'll guess at. Before any work starts, we check with the city about what your job needs, then prepare and file the paperwork for any permits it calls for. A four-season room puts more into the plans the city reviews, because the state's energy rules cover additions to existing homes, the city's handouts list green building measures for additions that add heated or cooled space, and plans going in now are checked against California's newest building codes.
Salt air is the other thing we plan around this close to the water, because metal exposed to salt and moisture corrodes faster, and left alone that can weaken the connections that hold a structure together. I look closely at the deck's metal hardware on the first visit, and we see the same damp, salty air on jobs in Hermosa Beach and Redondo Beach.
Why Manhattan Beach homeowners call Manhattan Beach Sunrooms & Patios for deck conversions
The owner plans every room
I come out to every job myself to measure, check the deck and plan the room, and our own crew does the building. You deal with the person who planned your room from the first visit to the last.
Building sunrooms here since 2023
I learned this trade building patio covers and enclosures, and I started this business in Manhattan Beach in 2023 to do the work carefully and to my own standard. Three years in, careful planning is still what we're known for.
Licensed and fully insured
We're licensed and fully insured. That matters on a job that adds walls and a roof to a structure attached to your house.
Plain answers before you sign
I care most that you understand what you're getting before you sign anything, including what your deck needs before the room goes on. If the city's Coastal Zone rules apply at your address, you'll hear that from me before the plans are drawn.
On a deck conversion, the most important question is whether the deck can carry the room, and that's answered before anyone talks about windows. If you'd like me to take a look, send us a request or call (424) 290-8610.
Request a quoteGet a written estimate for your deck conversion
We reply to every request within one business day. The estimate is free and done on site, with no pressure to book. Once you send this, we'll get in touch to set up a visit, and I'll come out to look at your deck and talk through the room you have in mind.
What happens after you call about a deck conversion in Manhattan Beach?
Call or send a request
Call (424) 290-8610 or use the form, and we'll get back to you to set up a visit. A rough size for your deck and the kind of room you're picturing help us plan it.
I measure and check the deck
I come out myself to measure, look closely at the framing 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 the room and any deck work involve before you decide.
We file permits, then build
We take care of the permit paperwork, and once it's in place our crew builds the room in stages. Any support the deck needs is finished before the walls and roof go on.
Walk the finished room together
Before we call the job done, I walk through the finished room with you. It's your chance to see how everything came together and ask anything you like.
Frequently asked questions
Is a three-season room cheaper than a four-season room?
Usually, yes. One sunroom company's guide says three-season rooms cost less to build because they need less structural reinforcement and no insulation or heating and cooling work, and their lighter roof goes in faster. The size of your deck and how much support it needs move the price too, so your written estimate is where you'll see the number for your house.
Can my existing deck hold a sunroom?
Not always. One company's guide says a deck built to hold people and furniture isn't automatically strong enough to carry a sunroom's roof, walls, insulation and heating and cooling. When a deck needs more support, that work shows up in the estimate before the room does.
How long does a deck-to-sunroom conversion take?
One company's guide puts a standard deck conversion at about 4 to 8 weeks from start to finish, depending on size and complexity. Four-season rooms with heating and cooling take longer, because the electrical and mechanical work adds time. I'll talk through the schedule for your room when I come out.
How do I know if my Manhattan Beach home is in the Coastal Zone?
The city points owners to the Interactive Map on its Coastal Zone page to see whether a property sits inside the zone. If yours does, the coastal permit rule covered above applies unless the project is exempt or excluded. We confirm it with the city before any work starts.
How much can a sunroom contractor ask for up front in California?
No more than $1,000 or 10 percent of the total contract price, whichever is less, under the Contractors State License Board's rules. Every other payment has to be listed clearly in the contract and tied to work done or materials delivered. If a contract asks for more than that at signing, ask about it before you sign.
What should I ask a sunroom installer before hiring them?
Ask how they seal the joints at the floor track, the channel the walls sit in along the floor. One sunroom maker's training calls this critically important, because the only way to fix a leak there is to take the sunroom apart.
Other rooms you might be weighing
All season rooms
Worth a look if you want a room you can heat and cool and use on any day of the year.
Enclosed patio rooms
A good fit if the space you want to close in is a patio at ground level rather than a raised deck.
Manhattan Beach, CA
Have your deck checked before you plan
Call (424) 290-8610 or use the form with your deck's rough size, the room type you want and your result from the city's Coastal Zone map, so I can plan the visit around your job.