Sunroom contractor in Redlands, CA - rooms that join your house the right way
Horizon Highland Sunrooms & Patios is a sunroom contractor based in Highland that builds sunrooms, patio enclosures and patio covers for homeowners in Redlands, from four season rooms and screen rooms to rooms built over an old deck or patio.
Redlands, as we see it on our jobs
Redlands is the next city over from us in Highland, and most of our calls here come from homeowners who have a patio or deck off the back and want a room they can use more of the year. We see a real mix of houses on these jobs. Some are older, with low rooflines and add-ons from past owners. Others are newer, with a slab patio already poured and waiting for walls.
The work isn't so different from what we do in Colton or back home in Highland, but every house here is its own puzzle. What decides the job is what the room will sit on and where it meets the house, so that's where I start.
Services in Redlands, CA
Patio-to-sunroom conversion
A lot of Redlands backyards already have a slab patio off the back door, and that can be a good start for a room if it's thick enough and level. We check the slab and its edges first, then build walls, windows and a roof on it or add footings where it needs them.
Deck-to-sunroom conversion
An older wood deck can become a sunroom if what's under it holds up. We open it up, look at the framing and fix or replace what's needed before the room goes on top.
Three season sunrooms
If you want a bright room for most of the year without paying to heat and cool it, a three season sunroom is often the better fit. It's lighter to build, and we plan the glass and screens around how you'll actually use the room.
Four season sunrooms
When the room has to work like part of the house all year, we build a four season sunroom with insulated walls, roof and glass. Our licensed trade partners bring in the wiring and the heating and cooling it needs.
Sunroom remodeling
Some homes here have a sunroom or patio room a past owner added that leaks, sags or never gets used. We find out why before we fix anything, and that usually means opening up the joint where it meets the house.
Patio cover installation
Not every backyard needs walls, and a solid patio cover gives you shade and a dry spot off the house for less. We tie it into the house as carefully as we would a full room, and we can size the posts so walls can go in later if you want them.
Building a sunroom in Redlands: the rules and what moves the price
Home projects inside Redlands fall under the city's own code, so before we draw up a room here, we check with the city office that covers your address. When your job calls for it, we prepare and file the plans and permit paperwork for you. We're licensed and fully insured, and our work is backed by our satisfaction guarantee.
What moves the price is mostly the size of the room, whether it's a screen room, a three season room or a fully insulated four season room, what it sits on and how tricky the roof tie-in is. The schedule turns on the plans and paperwork your job needs and on how much the deck or slab needs before we build. Your estimate spells out what's in the room and what isn't, the same way we write them up for homeowners in Loma Linda and Mentone.
What we look for on Redlands houses before we build
A lot of the decks we look at were built to hold a grill and a few chairs, not walls, glass and a roof. If yours is older, I'll get underneath and check the posts, footings and framing, and if they can't carry a room we reinforce or rebuild them first, because a room is only as sound as what it sits on. An old slab patio raises the same question, since a thin slab poured for furniture may need new footings along the edge before walls go up.
Low rooflines are the other thing we run into here. When there isn't much height where the room meets the house, we work out the roof pitch and the flashing, the metal that turns water away at the joint, before anything gets ordered, because that joint is where a sunroom leaks if it's rushed.
Get a free on-site sunroom estimate for your Redlands home
We reply to every call and message within one business day to set a time, and I come out to your Redlands house myself to measure, check the base and talk through how you want to use the room. The estimate is free, it's written up so you can see what's included, and there's no obligation.
How it works when you call us about a Redlands sunroom
Call or send us a message
Call (909) 737-1119 or use the form, and we'll set a time to come out. It helps to have a rough idea of how you'd like to use the room.
I look over your house
I come out myself to measure and check the house, the slab or deck and where the room would meet the roofline. Bring your questions, because I'll have plenty of my own.
Get a written estimate
I write up a free estimate that spells out what's in the room and what isn't. You can take your time with it and ask about anything that isn't clear.
We handle plans and paperwork
Once you say go, we check with the city office that covers your Redlands address and prepare and file the plans and paperwork your job calls for. We start building once that's sorted out.
We build and walk it
Our own crew builds the room, and licensed trade partners handle the wiring or heating and cooling when the room needs it. At the end, we walk the finished room with you.
Redlands sunroom questions we hear
Which building code does Redlands use for a sunroom addition?
Redlands uses the 2025 California Building Code, Volumes 1 and 2, as its building code, with some parts changed by the city. Those local changes are part of the code, so a room built in Redlands has to meet the city's version, not just the state text. We check with the city on anything specific to your room before we build.
Does the Redlands city code say anything about sunroom roofs?
The Redlands building code chapter has a section on minimum roof covering classifications, which deals with roofing. What it asks of a particular sunroom roof is the city's call, so we check with the city on how it applies to your room before we settle on the roof.
Where can I read the building code Redlands adopted?
The adopted building code is on file with the City Clerk of Redlands, and you can ask that office to see it. Most homeowners don't need to, but it's there if you want to read the text for yourself.
How much does a sunroom cost in Redlands?
The cost of a sunroom in Redlands comes down to its size, the kind of room, what it sits on and how it ties into your roof. A screen room on a sound slab costs far less than an insulated four season room that needs new footings and wiring. I'd rather see the house before I put a number on it, and the estimate spells out what your room includes and what it doesn't.
How do I know if my old deck can hold a sunroom?
You usually can't tell from the top of the deck, because the answer is in the posts, footings and framing underneath. That's the first thing I check on a Redlands deck job, and if it can't carry walls and a roof, we reinforce or rebuild it before the room goes on.
How do I turn my Redlands patio cover into a sunroom?
Start by finding out whether the cover's posts, beams and the slab under it can carry walls and glass, since many covers were only built to make shade. If they can, we enclose it. If not, we beef up what's there or replace the cover with a roof made for a room.
Ask about your Redlands sunroom today
Call (909) 737-1119 or use the form, and tell me about the odd corner of your house you've been unsure about, because that's the part I most like to work out.