Sunroom Contractor in Baldwin Park, CA - Rooms Built Square on a Checked Slab
Baldwin Park Sunrooms & Patios is a sunroom contractor based in Baldwin Park, CA. We turn patios, decks and slabs here into sunrooms, screen rooms and enclosed patio rooms that fit the house.
- Licensed and insured.
- Free in-person estimates.
- We respond within 1 business day.
Backyards and single-story homes in Baldwin Park
Baldwin Park is home for us, and most of the calls we get here start in the backyard. A lot of the houses are single-story on flat lots, with a concrete patio out back and often an older patio cover over it that's seen better days. People want that space to become a room they'll actually sit in, closed in with glass or screen and opening off a door they already use.
We see much the same in El Monte and Covina. What decides the job is usually the slab, because a patio poured for a table and a grill wasn't necessarily poured to carry walls and a roof, so I check its edges, its cracks and whether it's level before we talk about glass.
Permits, licenses and what moves your schedule in Baldwin Park
Inside city limits, permits and plan checks run through Baldwin Park's Building and Safety Division, which also inspects job sites. Plan check happens before we can start, so it shapes the front of the schedule more than anything we do on site. Some addresses around here go through Los Angeles County instead, so I check which office yours goes through first, and we take care of the permit paperwork when the job calls for one. Before you hire anyone, check that they hold a California contractor's license and, if they're coming in from outside the city, a Baldwin Park business license. We're licensed and insured.
The price moves with the size of the room, whether it's a screen room, a three season room or a fully closed-in four season room, the glass you pick, and how much work the slab needs before it can hold walls. The schedule turns on the permit review, any slab work and how long parts take to arrive once I order them off my measurements, and the written estimate I give you after measuring puts your own figure on it. We do the same work over in West Covina, where the backyard slabs raise the same questions.
Get a free sunroom estimate at your Baldwin Park home
Call (626) 869-2042 or send the form, and we'll get back to you within one business day to set a time. I come out to your Baldwin Park home myself to measure and check what the room will sit on, and the estimate is free with no obligation.
Call (626) 869-2042Services in Baldwin Park, CA
Sunroom additions
Many Baldwin Park lots have room behind the house for one more room, and a sunroom addition ties into your walls and roofline so it reads as part of the house. I measure where it meets the house before anything is ordered, because an addition that's out of square shows at every seam.
Patio-to-sunroom conversion
The concrete patio out back is the most common starting point we see here, and turning it into a sunroom uses space you already have. I check how the slab was poured and whether it's level first, since walls and glass need a base that won't move.
Patio enclosures
When the patio cover is sound but the space barely gets used, closing in the sides is the simpler route. We fit the walls to the cover and seal the edges where they meet the slab and the house, because that's where gaps show up first.
Patio cover installation
A lot of the older aluminum covers we see here are tired, and some homeowners just want a solid roof back over the slab. We set the new cover square and level to the house, which keeps enclosing it later on the table.
Screen room installation
If you want the backyard open to the air but kept clear of bugs, a screen room is the lighter option on an existing slab. We frame it tight to the slab and the house wall, because a screen room with gaps at the bottom track doesn't keep much out.
Sunroom remodeling
Some houses here already have a sunroom that leaks at the edges or has panels that are past their time. I look at what it sits on and how it's attached before we talk about new glass, since fixing the top of a room on a bad base only buys time.
What happens when you call us about a Baldwin Park sunroom
Call or send the form
You call (626) 869-2042 or send the form, and we set a time for me to come out. We're open Mon–Fri: 7 AM–10 PM, Sat–Sun: 8 AM–9 PM, so an evening or weekend call works fine.
I measure and check underneath
I look at the spot, measure it and check the slab or deck the room will sit on. It helps if you're home, so you can show me how you plan to use the space.
Pick the room, get it written
We talk through the room type, the glass and whether it opens into the house, and then you get a written estimate. You see the number on paper before you decide anything.
Paperwork first, then the build
Once you're ready, we sort out what your address needs and get the permit paperwork in when the job calls for one. Then our own crew builds the room from my measurements.
Common questions
Does a sunroom addition in Baldwin Park need plans submitted to the city?
It may, because an older city notice lists home additions among the jobs that need plans, while jobs like reroofing or a water heater go through without them. The notice is undated, so I confirm what the city wants for your address before we order anything.
How do I know if a sunroom contractor needs a California license?
A contractor needs a state license from the Contractors State License Board whenever the job needs a building permit, uses employees, or comes to $1,000 or more in labor and materials. The small-job exemption went from $500 to $1,000 in 2025, but it only covers work with no permit and no employees, and a bigger job can't be split into smaller contracts to slip under it. Ask to see the license before you sign.
How much can a contractor ask for up front on a sunroom in California?
Under the board's guidance, a down payment can't be more than $1,000 or 10 percent of the total contract price, whichever is less. Every payment after that has to be spelled out in the contract and tied to work done or materials delivered, and that holds for any home improvement job, sunrooms included.
Does a contractor need a Baldwin Park business license to build a sunroom here?
Yes, a contractor from outside the city who works within city limits needs a Baldwin Park business license and has to file the city's contractor declarations. The city lists the fee at $207.00 for general contractors and $119.50 for subcontractors, plus an assessment fee, so it's a real step and a fair thing to ask about.
How do I find out if my Baldwin Park lot is in an earthquake hazard zone?
Look up your address on the state's EQ Zapp map, which shows whether a property sits in a mapped zone for fault rupture, earthquake landslides or liquefaction, which is soil that briefly turns to quicksand in a quake. It also tells you when the state hasn't looked at an area yet, and if your lot shows up in a zone, I'd want to know that before we plan what the room sits on.
How much does a sunroom cost in Baldwin Park?
There's no set price, because a sunroom here is priced on its size, the room type, the glass and the shape of the base under it. A three season room costs less than an insulated four season room tied into the house, and a slab that has to be cut out and repoured adds cost before any walls go up. I give you a written estimate once I've measured and checked the slab, so the number fits your yard.
Get your Baldwin Park sunroom measured right
We answer seven days a week, until 10 PM on weekdays, so call (626) 869-2042 or send the form whenever it suits you.