Sunroom Contractor in Grand Terrace, CA - Patio Rooms That Stay Dry
Suncraft Rialto Sunrooms & Patios builds sunrooms, patio enclosures and patio covers for homes in Grand Terrace, CA. We close in the slab behind your house and turn it into a room you'll actually use.

- Licensed and fully insured.
- Free quotes on site.
- We reply within 1 business day.
Homes and back patios across Grand Terrace
Grand Terrace is a small, mostly residential city just south of Colton, with Blue Mountain rising along its eastern edge. Most of what we see here is single-family homes on their own lots, a lot of them single-story, with a backyard that takes hard afternoon sun and a concrete patio or an older cover that's seen better days. That's the space people call us about, because it's already there and nobody sits out in it once summer hits.
That shapes how I start every job here. I look at the slab first, because a patio poured for a grill and a few chairs isn't always ready to carry walls, glass and a roof, and I'd rather tell you that on the first visit than after the room is up.
What we deal with on Grand Terrace jobs
Building permits here come from the city's Building and Safety Division, which reviews construction plans for code compliance before work starts, so its review usually sets your start date more than our crew does. Before you hire anyone, make sure they hold a California contractor license, and ask the City of Grand Terrace about their local business license, since the city is where local business licensing starts. We're licensed and fully insured, and when your job needs a permit, we take care of it with the city so you're not the one going back and forth.
Price here turns on the size of the room, glass or screen walls, whether your slab can carry the room or needs new footings, and how the roof ties into the house, and your written quote spells out your own number. We're based in Rialto, a short drive up the freeway, and we do the same work in Riverside just to the south, so the heat and sun we plan around in Grand Terrace are the same ones we deal with every week.
Get a free sunroom quote at your Grand Terrace house
We reply within one business day to set a time, and I come out to your house in Grand Terrace myself to measure and look at the slab. The estimate is free and done on site, you get a written quote afterward, and there's no pressure and no obligation.
Call (909) 546-5002Services in Grand Terrace, CA
Enclosed patio rooms
A lot of Grand Terrace backyards already have a slab and a cover that nobody uses once it gets hot. We build enclosed patio rooms on that slab with walls, windows and a door, so the space works like part of the house.
Patio-to-sunroom conversion
When the patio is already there, converting it is usually the simplest way to add a room. I check the slab and the house wall first, and if the slab can't carry it, we talk about new footings before anything else.
Four season sunrooms
Inland summers turn an all-glass room into an oven unless it's built for the heat. Our four season rooms use insulated walls, roof panels and glass so you can heat and cool them like the rest of the house.
Screen room installation
Plenty of homeowners here just want fresh air on spring and fall evenings without the bugs. We build screen rooms that keep the breeze and shade the patio without the cost of a fully enclosed room.
Patio cover installation
An old aluminum cover that sags or leaks is a common find behind houses in Grand Terrace. We replace it with a cover fastened to the house framing, and we can build it so walls can go in later.
Sunroom additions
Some lots have no patio worth building on, or the room needs to go on another side of the house. Our sunroom additions start with new footings and a floor, then get framed and roofed to tie into your house.
What happens when you call us about a Grand Terrace sunroom
Call or send the form
Call (909) 546-5002 or send the form with a few lines about the room you want. We get back to you and set a time for me to come out.
I measure and look closely
I come out myself, measure, and check the slab or deck and how your house is built, and it helps if you're home so we can talk about what the room is for. You get a written quote after the visit, so you know the number before anything is built.
We get the city's approval
When your job needs a permit, we put the application in and answer any questions from the city's plan review. We start building once the plans are approved.
Our crew builds the room
Our own crew does the building with me on site, and I stay on the job through the final inspection. When it passes, we clean up and walk the room with you.
Common questions
When does a contractor need a California license to build a sunroom?
A contractor needs a state license when the project needs a building permit, uses any additional workers, or totals $1,000 or more in labor and materials, which covers just about any sunroom. They need that license before they bid, so ask for it before you take a quote and check it with the Contractors State License Board.
How do I request a building inspection in Grand Terrace?
Inspection requests go by email to Inspections@grandterrace-ca.gov, and the city asks you to make sure you get a confirmation back. On our jobs we request each inspection ourselves, so you don't have to chase it.
How much does a sunroom cost in Grand Terrace?
It depends on the room you want, and the written quote I give you after measuring is where you'll get your number. A screen room on a sound slab runs far less than an insulated four season room on new footings, and adding power, fans or a roof that ties into the house all add to it.
Does a sunroom addition in Grand Terrace need fire sprinklers?
It might, so we ask the city before we draw anything. An earlier city ordinance required sprinklers in all new homes and in existing homes remodeled across a large share of their floor area, and it required buildings to sit a set distance from the house, with attached patio covers excepted. The city now lists newer code editions, so we check whether those rules still apply to your room.
What is the best way to build a sunroom that holds up to wind in Grand Terrace?
Tie the room solidly to the house and the slab and fasten the roof for wind, because an earlier city ordinance describes Grand Terrace as prone to strong wind gusts and sitting in an active earthquake zone. We anchor the frame to sound concrete and attach the roof to the house framing, and if your slab can't hold the anchors, I'll tell you up front instead of building on it.
What building codes does Grand Terrace use for sunroom additions?
The city lists the current California Building Code and California Residential Code as adopted, along with the state electrical, mechanical and plumbing codes. The room's framing, glass and any wiring for lights, fans or a mini split get reviewed against those, so we draw the plans to them from the start.
Ask about your Grand Terrace sunroom today
Call (909) 546-5002 or send the form, and if your slab or your idea won't work, you'll hear it on the first visit instead of after the build.




