Sunroom contractor in Highland, CA - rooms that tie into the house right
Horizon Highland Sunrooms & Patios is a sunroom contractor in Highland, CA. We build sunroom additions, patio enclosures and screen rooms on Highland homes, and we take on the awkward ones, like old decks and low rooflines.

Highland homes as we see them from the back yard
Highland has the older blocks of the Highland Historic District, where early 1900s Craftsman bungalows still stand, and it has plenty of newer stucco neighborhoods with a slab patio or a wood deck out back. Most of our calls here come from people who want more usable room off the back of the house, so one week we're working out a low bungalow roofline and the next we're judging a tract home's tired deck. We see the same mix next door in Mentone and Redlands.
That mix shapes the job before the glass does. An older house usually needs more thought where the new roof meets the old one, and an old deck or slab has to show it can carry a room before we build on it.
Services in Highland, CA
Sunroom additions
Plenty of Highland families want a real room off the back, not just shade, and a sunroom addition gives them one that's framed, roofed and joined to the house like any other room. We spend most of our time on what it sits on and where it meets your walls and roof, because those are the parts you can't fix later.
Patio-to-sunroom conversion
A lot of houses here already have a concrete patio out back, and turning it into a sunroom can save you starting from scratch. We check the slab's edges and condition first, since a patio poured for a barbecue wasn't always poured to hold walls.
Deck-to-sunroom conversion
Older wood decks are one of the awkward jobs we like, because the deck has to be opened up and looked at before anyone can say it'll hold a room. When the framing or footings won't carry it, we tell you and rebuild what's needed instead of building on top and hoping.
Four season sunrooms
Highland summers get hot enough that a glass room without insulation can feel like an oven by midafternoon. A four season room uses an insulated roof and better glass, and we bring in licensed trade partners when you want it heated and cooled.
Patio cover installation
Some backyards here just need shade over the patio, and a cover does that without the cost of walls and glass. We set the posts and fasten the cover to the house at a ledger board, the beam bolted to your wall, so it holds up and sheds water away from the house.
Sunroom remodeling
We meet plenty of aging patio rooms and enclosures here with cloudy panels, a leak at the roof joint or a slab that's shifted. Sometimes new panels and a reworked joint are enough and sometimes starting over is the honest answer, and we'll show you why either way.
Permits, licenses and price for a sunroom in Highland
The City of Highland's Building Department issues the permits for additions, and its Building and Safety staff review the plans before anything gets built, so that review usually sets your start date more than our crew does. Anything the city treats as a new structure goes through its Planning Division first, which adds a step. Before you hire anyone, ask for their California contractor's license and their Highland business license, which a contractor needs before working in the city, or an Out of City license if they're based somewhere else. We're licensed and fully insured, and we check with the office that covers your address, then prepare and file the plans for you.
Price mostly turns on what you can't see in a drawing. It moves with the size of the room, whether the slab or deck under it can carry walls, how the roof ties into yours, glass or screen, and whether you want wiring or heating and cooling. The schedule turns on the city's review and on how much of the base needs fixing. We do the same work in San Bernardino and other cities nearby, where the office that reviews your plans depends on your address, and the estimate spells out what's in your room and what isn't.
What Highland's heat and older houses mean for your room
Highland's long-run weather records, kept from the early 1900s through the 1960s, put the average high near 92°F in July and close to 91°F in August, and a glass room facing west soaks up that heat all afternoon. So before we talk about anything else, we talk with you about which way the room faces, how much of it is glass and whether the roof should be solid and insulated.
Older houses here, the bungalows especially, often have low eaves that leave little height for a new roof to slope away from the house. That's the kind of spot I like to puzzle out, by checking the framing and the old roof before deciding how the two join, because a poor joint is where leaks start.
Get a free on-site sunroom estimate in Highland
Send the form and we'll get back to you within one business day to set a time for me to come out to your Highland home. I'll measure, look over the house and the base, and write up a free estimate of what the room would include, with no obligation to go ahead.
How it works when you call us in Highland
Call or send us a message
Call (909) 737-1119 or use the form, and we'll get back to you to set a time to come out. It helps to have a rough idea of how you'd use the room.
I look over your house
I come out myself to measure and look at the house, the slab or deck, and the roofline the room will join. Expect a lot of questions about how you'll use the space, since that decides the glass, the roof and the base.
You get a written estimate
I write up what the room includes and what it doesn't, so you can read it line by line. Nothing moves until you say go.
We file the plans
Once you say go, we prepare the plans and permit paperwork and file them with the office that covers your address. Building and Safety reviews them before any building starts, and we keep you posted while they're in review.
Our crew builds, then we walk it
Our own crew builds the room, with licensed trade partners for any wiring or heating and cooling. When it's done, we walk through it with you and go over anything you want to look at.
Sunroom questions from Highland homeowners
How do I apply for a building permit for a sunroom in Highland, CA?
You apply through the city's online permit portal, which takes Building and Safety applications at any time. When we build your room, we prepare the plans and file the paperwork ourselves, so you don't have to sort it out alone.
Do I need a permit if my new sunroom ties into the roof of my Highland house?
Yes, plan on it, because Highland's Building Department issues permits for roof repairs and reroofing as well as for additions. We draw the roof joint into the plans, so the city reviews exactly how the new roof meets yours.
Can I put lights and a mini-split in a sunroom in Highland?
Yes, and the city requires permits for electrical and HVAC systems, so that work gets planned and permitted along with the room. We bring in licensed trade partners for the wiring and the mini-split, the wall-mounted heating and cooling unit, and it's best to decide on them before we frame so the lines can run inside the walls.
How do I know if a sunroom contractor needs a California license?
A contractor building your sunroom needs one, because California requires a license from the Contractors State License Board when a project needs a building permit, uses additional workers, or costs $1,000 or more in labor and materials. Ask for the license before you sign anything. We're licensed and fully insured.
How much can a contractor ask for as a down payment on a sunroom in California?
In California, a down payment can be no more than $1,000 or 10 percent of the total contract price, whichever is less. The state's rule also says later payments have to be listed in the contract and tied to work done or materials delivered, and it covers home improvement projects like a sunroom.
What causes a sunroom to cost more in Highland?
A sunroom costs more when it's bigger, needs a new or repaired base, has a tricky roof joint, or gets an insulated roof, wiring and heating and cooling. A screen room or patio cover on a sound slab usually lands at the lower end, and a four season room on an old deck that needs rebuilding lands higher. The estimate shows you which parts of your job drive the number.
Start your Highland sunroom with a call
Our phone hours run until 11 PM every day of the week, so you can call (909) 737-1119 after work or send the form tonight.




