Sunroom contractor in Pomona, CA - dry rooms on a base that holds
Sunhaven Ontario Sunrooms & Patios builds sunrooms, patio enclosures and screen rooms for houses in Pomona, CA. We look hard at the slab or deck first, then build a room that stays dry and gets used.

Older homes and backyard patios across Pomona
Pomona has more range in its housing than most of the cities around Ontario. We work on older houses on tree-lined streets near downtown, on postwar ranch houses with a slab patio out back, and on newer tract homes where the owner wants the backyard to do more than hold a grill.
It borders Montclair on one side and Diamond Bar on the other, and we do the same work in both. What changes from house to house here is what the room will sit on and what kind of wall it has to join, so that's what I look at first.
Working in Pomona: permits, the base and the price
In Pomona, building permits come from the city's Building Safety Division, which also reviews plans and sends out the inspectors, so the calendar on a sunroom usually turns on that review more than on how fast we build. When your room needs a permit, we draw the plans, file them and book the inspections, so you don't have to stand at the counter yourself. Business licenses also start with the City of Pomona, so it's fair to ask whoever you hire about theirs, and we're fully licensed and insured. The price moves with the size of the room, screen versus glass versus a fully insulated room, whether your slab can carry walls or needs new footings, how the roof ties into the house, and whether electrical or heating and cooling comes in. Your written quote spells out which of those apply to your house.
Pomona has a lot of mature street trees, and the ones along the curb are the city's to look after. If a parkway tree hangs over your driveway, we plan deliveries and where we stack material around it instead of cutting it back. We're based in Ontario, a short drive east, and our crew does the same work out in Jurupa Valley and the other cities around it.
Services in Pomona, CA
Patio-to-sunroom conversion
Plenty of Pomona backyards already have a covered slab that gets used for a few months and then collects patio furniture. We check whether the slab and cover can carry walls and glass, then close it in, or tell you plainly that it needs a new base first.
Patio enclosures
A lot of owners here want the patio they have, just with walls so it's usable more of the year. We enclose it with screen or glass panels and seal the top edge where it meets the house, because that's the spot that leaks if it's rushed.
Custom sunrooms
Older Pomona houses have rooflines and back walls that a standard kit won't fit without gaps. When that's the case, we design and build custom sunrooms framed to your actual house instead of forcing a catalog size onto it.
Sunroom remodeling
We see a fair number of add-on rooms here that a past owner put up with thin glass and a tired seal at the house wall. We open up what's leaking, fix the joint and swap out panels so the room is worth sitting in again.
Patio cover installation
Some older wood patio covers in Pomona are sagging or soft at the posts, and they're not ready to hold anything more than shade. We replace them with a cover set on proper footings, and we can build it so you can close it in later.
Four season sunrooms
If you want a room you'll use every month of the year, not just in spring, it needs insulated glass, a real roof and often its own heating and cooling. Our crew builds the room, and licensed electricians and heating and cooling trades come in for their part.
What Pomona's older houses ask of a sunroom
Pomona has five historic districts and 27 landmarks, plus plenty of houses on the National Register, so a lot of the walls we tie into have been standing for a long time. Older walls are often out of plumb and the roof edge rarely lines up with anything off the shelf, so we open up the spot where the room meets the house, fix what we find and flash that joint carefully, since that's where leaks start. If your house is in a historic district, tell me when you call so it's part of the plan before anything gets drawn.
The other thing we see over and over is an old patio slab poured for a table and chairs, not for walls, glass and a roof. I check the slab's edges and thickness before I quote, and if it can't carry the room, we pour new footings. I'd rather spend the extra hour there than meet you again after the first big rain.

Get a written sunroom quote for your Pomona house
We get back to you within one business day to set a time, and I come out to your Pomona house to measure and look at what the room will sit on. The estimate is free, on-site and comes with no obligation. After the visit you get a written quote that spells out what's included.
How a Pomona job goes
Call or send the form
Call (909) 738-1566 or use the form and tell us a little about the room you want. We get back to you and set a time for me to come out.
I measure and check the base
I measure, look over the slab, deck or patio cover, and ask how you'll actually use the room, so it helps if you're home for this visit. You get a written quote that spells out what's included, so there's no guessing on price.
We handle plans and permits
Once you sign, we draw the plans, file them with the city and schedule the inspections. City review takes its own time, and we tell you that up front and keep you posted while it runs.
We build and walk it
Our own crew builds the room, and licensed electricians and heating and cooling trades come in when the job needs them. When it's done, we walk the finished room with you, and the work is backed by our satisfaction guarantee.
Pomona sunroom questions answered
How do I find out if I need a permit for a sunroom in Pomona?
Check with the city before you assume you don't, because Pomona's list of work that's exempt from a permit names things like short fences and low walls, not sunrooms or patio enclosures. The Building and Safety forms page has permit guidance you can read first. When your job needs a permit, we prepare the plans, file them and schedule the inspections.
When can I visit Pomona Building and Safety in person?
Building and Safety takes walk-ins Monday through Thursday, 7:30 a.m. to 6 p.m., at City Hall, which is closed on Fridays. You can also call them at 909-620-2371. If we're handling your permit, you usually won't need to go in at all.
How much does a sunroom cost in Pomona?
Your number comes from a written quote after I've seen your house, because the base under the room moves the price as much as the room itself does. A slab that can already carry walls keeps it down, while new footings, a tricky tie-in to an older roof, insulated glass or added heating and cooling push it up.
How long does it take to build a sunroom in Pomona?
Plan on two stretches, the city's plan review when the job needs a permit and then our build, with inspections along the way. The review runs on the city's clock, and the build goes faster when your existing slab can carry the room, since new footings add a stage.
Can I enclose my existing patio cover in Pomona?
Sometimes, if the posts, beam and roof were built to carry more weight than shade. A lot of older wood covers here weren't, so I check them on the first visit and tell you whether we can close in what's there or should replace it first.
Do you build sunrooms in Pomona if you're based in Ontario?
Yes, Pomona is one of the cities around Ontario that we work in. I come out to measure and look over the job myself, and our own crew does the building.
Start your Pomona sunroom quote today
Call (909) 738-1566 or send the form, since the city's plan review can't start until there's a signed design for us to file.





