Patio-to-sunroom conversion in Baldwin Park CA - a room sealed tight at the slab edge
Patio too hot, dusty or buggy to use? We turn it into a sealed room, built square on a slab we check first.

- Licensed and insured.
- Free in-person estimates.
- We respond within 1 business day.
Can I turn my patio into a sunroom?
A patio-to-sunroom conversion in Baldwin Park closes in the patio slab you already have with walls, a roof and windows, so the space off your back door becomes a room you can actually sit in.
You already have the slab, so the job is mostly about what goes on it and how it meets your house. The price moves with the size of the room, the type of room you pick, the glass, whether it opens into the house and what the slab edge needs. The schedule turns on getting the measurements right before anything is ordered and on the permit review for your address. Your written estimate gives you the figure for your own patio, and if all you really want is shade, a patio cover may be the simpler answer.
How do you know your patio is ready to be closed in?
Nobody uses the patio
If the patio sits empty because it's too hot by noon, too dusty or full of bugs by evening, the slab isn't doing much for you. Every season you wait is another season of a space you own and don't use.
Patio cover sagging or leaking
A cover that sags or drips at the seams usually means the posts, the attachment at the house or the flashing has worn out. Left alone, that water keeps reaching the house wall and the slab edge, which are the exact spots a new room has to seal against.
Water pooling at the house
Puddles where the slab meets the house, or a crack running along that line, usually mean the slab drains toward the wall or has moved. That's the spot I'll look at hardest, and it's easier to deal with before a room goes on top than after.
Other rooms we build from what's there
Deck-to-sunroom conversion
Your back door opens onto a wood deck instead of concrete, and you'd like the same kind of room built over it.
All season rooms
You want a room you'd sit in on a hot August afternoon or a cold January night, not just on mild days.
How we do a patio-to-sunroom conversion
We start by measuring how far the patio slab runs past the house wall, because that edge decides how the new walls go on. Then we find out what kind of slab it is before anyone cuts. A patio cover and sunroom handout from Milpitas, another California city, says to check whether a slab is post-tension, a slab with steel cables pulled tight inside it, because cutting one of those cables can be very dangerous and expensive to repair. Once you've picked how to handle the edge, our crew frames the walls, adds footings where the room needs them, puts on the roof, flashes the joints where the room meets the house so water stays out, and finishes the floor and any wiring.
Not every room starts on a concrete patio. If yours would sit over wood, a deck-to-sunroom conversion starts from the framing under the deck instead of the slab, and if you want the glass and insulation to use the room year-round, look at our all season rooms.
Masonry curb on the slab
A low curb of block or brick built on top of the slab lifts the new wall above the slab edge. It suits a patio you want to keep whole, and it gives the bottom of the wall a solid, raised base.
Treated wood beam bolted down
A pressure-treated beam bolted to the slab also sets the wall on a raised base above the edge. It suits a room framed in wood anyway, and it skips the masonry work.
Cutting the slab back
Saw-cutting the slab back to the face of the house foundation removes the ledge, so the new wall lines up with the house. It only makes sense once we know the slab isn't post-tension, which is why that check comes first.
Get a written estimate for your patio conversion
We get back to you within one business day to set a time for me to come out. The estimate is free, done at your home, with no obligation. Calling (626) 869-2042 works too.
Call (626) 869-2042Why Baldwin Park homeowners call us for patio conversions
I measure, our crew builds
I come out to measure every patio myself, and our own crew does the build. The person who took the numbers answers for how the room fits.
In business since 2017
I spent every summer through school on a crew building patio covers and sunrooms, and I opened this business in 2017. What I check on your patio comes from knowing how these rooms go together from the slab up.
Licensed and insured in California
We're licensed and insured. Under California's license rules, a residential remodeling contractor can't contract for structural changes to footings, foundations, load-bearing walls or roof structures, and a patio conversion can touch all of those, so it's fair to ask whoever you hire what their license covers.
We look up your zone early
We're based in Baldwin Park, where the zoning code caps how much of a lot can be covered, from 40% in R-1-7,500 to 60% in R-3, so your zone is one of the first things we look up. We do the same work in the cities around it.
On this job, the slab edge decides everything after it. Set up a visit and I'll come measure yours.
What happens after you call about a patio conversion in Baldwin Park?
Call us or send the form
You call (626) 869-2042 or send the form, and we set a time for me to come by. It helps to tell us roughly how big the patio is and whether it has a cover now.
I measure and check the slab
I look at the spot, measure it and check the slab underneath. Nothing gets priced or ordered until those numbers hold up.
Pick the room, get the estimate
We talk through the room type, the glass and whether it opens into the house, and how each choice changes the cost. Then you get a written estimate to look over on your own time.
Permits first, then our crew
Once you're ready, we check whether your address goes through the city or Los Angeles County and take care of the permit paperwork when the job calls for one. In Baldwin Park, the city reviews the plans and inspects the site as the work goes, and our crew builds around those inspections.
Common questions
How much does a patio-to-sunroom conversion cost in Baldwin Park?
A sunroom in Los Angeles County usually costs about $17,000 to $60,000 per job, and that's the area's usual range, not a quote from us. The low end tends to be a simpler room on a slab that needs little at the edge, and the high end a larger, fully glassed room with more work at the slab and the house. I can only place your patio in that range after I've measured it.
Who issues building permits in Baldwin Park?
Baldwin Park's Building and Safety Division issues building permits for addresses in the city. An older city notice listing permit applications that need plans names additions to a home but doesn't name patio conversions, so ask the office about your job or let us find out as part of it. The office is open Monday through Thursday, 8 am to 5 pm, and closed Friday, at 626-813-5265.
What is the best way to handle a patio slab that sticks out past the house?
The usual answer is to set the new wall on a raised curb or cut the slab back, because a slab that runs 4 inches or more past the foundation wall leaves a ledge under a wall built in line with the house. That ledge raises concerns about water getting in and about safety, which is why we measure the edge and lay out those options before anyone cuts.
How do I take care of a sunroom once it's built?
One sunroom maker's guide suggests looking over the roof and gutters once a year and keeping the weep holes, the small drain openings along the bottom of the frame, clear so water can get out. The same guide says to keep door and window tracks clean inside and out and to use pure silicone spray on them, since oil-based lubricants tend to pick up dirt.
What glass should I choose for a sunroom in Baldwin Park?
Choose glass for how you'll use the room, and expect the state to have a say, since California's Energy Code sets some standards for window and door materials by the climate zone a house sits in. A room you plan to heat and cool usually calls for better glass than one you'll mostly use on mild days.
How long does it take to turn a patio into a sunroom?
Most of the wait usually comes before our crew shows up, not during the build. The time goes to measuring, settling the edge fix, ordering parts made to those measurements and getting through the plan review for your address.
Send photos of your patio and slab edge
Photos of where the slab meets the house, plus your lot's zone if you know it, let me come out ready, so email them to quotes@baldwinparksunroomsandpatios.com or call (626) 869-2042 until 10 PM on weekdays and 9 PM on weekends.




