Four season sunrooms in Hacienda Heights CA - a room you can heat and cool all year
Your patio is too hot in summer and too cold on winter nights. We build an insulated, heated and cooled room you'll use all year.

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What is a four season sunroom, and is it the right room for your house?
A four season sunroom is an addition tied into your house with insulation, electricity and heating and cooling, so in Hacienda Heights you end up with a temperature-controlled room you can use year-round instead of a patio you only enjoy a few months.
Most people who call me have a patio or deck they want more use out of, or a sunroom that bakes every afternoon, and some are looking at a patio-to-sunroom conversion to get there. The price comes down to the room's size, what it's built from and what it sits on, and the schedule mostly turns on that same base and on how the permit side goes for your address. I come out, look and measure, and you get a written estimate with your own numbers before you sign anything.
How do you know a four season room is what you need?
The patio sits unused
You've got a covered patio, but it's too hot by afternoon, too buggy at dusk and too chilly after dark, so it mostly holds a grill. That usually means the space needs walls, insulation and conditioning, and every month you wait is another month of paying for space you walk past.
Your sunroom bakes by afternoon
You built a sunroom, and now the door stays shut from noon on because nobody can sit in there. It usually means the room was built like a porch with windows and never got heating and cooling of its own, and the longer it goes, the more the furniture fades and the room turns into storage.
Drafts and damp around glass
You feel air moving near the windows, or you see water marks along the frames after a rain. That usually points to tired seals or windows that weren't made for a conditioned room, and if you let it go, water can work its way into the framing and the floor.
How we build a four season sunroom
I start under the room, not with the glass. A sunroom is mostly glass resting on whatever's below it, so I look at the slab, patio or deck first, because a room built on site needs a proper building foundation, and a prefab kit can only go on an existing deck or patio if that surface is level. Then we plan the heating and cooling for the new room itself. One company's guide points out that extending your existing ductwork often fails, because the furnace was sized for the house you have now and a glass-heavy room heats and cools very differently, so we don't just tap into the old ducts and hope. We'll also talk you out of a glass roof if it's going to cook the room. After that, my crew and I frame it, insulate it, run the electrical, set the windows and tie it into the house.
If you don't plan to heat or cool the space, a three season sunroom gives you the glass without the insulation and heating and cooling, and it usually costs less to build. If all you want is shelter from wind and bugs on a covered patio, our patio enclosures may be the simpler fit.
Open to the house
This suits you if you want the room to feel like part of your living space, like a bigger family room off the kitchen. In the sunroom trade, a heated or cooled room that's open to the house counts as habitable space, so it's the kind of addition that has to keep up with the rest of the house.
Closed off, with its own controls
This suits you if you want a room you can shut a door on, like an office or a plant room, with its own temperature control. That counts as non-habitable space, which is a different kind of addition, so it's worth deciding before we draw anything.
Get a written estimate for your four season room
Send the form and we'll reply within one business day to set a time. I come out, measure and ask how you plan to use the room, and the estimate is free, on site and comes with no obligation.
(626) 269-6285Four season sunroom permits in Hacienda Heights
Who issues your permit depends on where your property sits. For property in unincorporated LA County, LA County Public Works issues permits for additions, and its list names adding a room without naming sunrooms, so don't assume you can skip it. Some Hacienda Heights addresses may be handled by another office, so we look up which one covers yours before anything gets drawn. Larger projects need plans, and the office tells you when you apply whether a plan check is required, which is an expert review of your plans against safety, building and environmental standards. When the job needs a permit, we take care of the paperwork.
Out back, a lot of what I find here and on jobs in Whittier and West Covina is a patio slab poured for a table and a grill, not for walls and glass, so I check its condition before we decide whether it can carry a room or needs a new foundation. We're based in Hacienda Heights and build in a lot of the cities around it, so if yours isn't listed, call and ask.
What happens after you call about a four season sunroom?
Call or send the form
Reach us at (626) 269-6285 or through the form, and we'll set a time for me to come out. Have your address handy so I can start on the permit side early.
I look, measure and ask
I measure the space, check what the room would sit on and ask how you plan to use it. That last question decides more than people expect, like whether the room opens to the house.
You get a written estimate
It lays out the room, the foundation work and the heating and cooling plan, so you can see where your money goes before you sign. Once you're ready, we sort out the permit for your address.
We build, then walk through
My crew and I build the room, with inspections along the way if your permit calls for them. When it's finished, I walk through it with you before we call it done.
Frequently asked questions
How much does a four season sunroom cost in Hacienda Heights?
Across the US, adding a four season sunroom usually costs about $200 to $400 per square foot, or about $20,000 to $80,000 for the whole job. That's the national market, not our price. Your own number comes in the written estimate after I've seen what the room would sit on.
What inspections does a sunroom addition need in Hacienda Heights?
With a county permit, inspectors check that the work matches the permit, things like the walls and the structure, and a final inspection closes out the project. We work through those inspections with you, so you're not the one chasing them.
Is a glass roof a good idea on a four season sunroom?
Usually not. One company's guide says a solid, insulated roof performs much better, and by its account a glass ceiling turns the room into an oven by midafternoon and a heat sink at night. I'd rather put the light in the walls and keep a real roof over your head.
How do I check the windows on a four season sunroom?
Ask the installer how the windows meet the industry's sunroom specification for air leakage, water entry and thermal performance. Those three decide whether the room stays dry, draft-free and comfortable once you're paying to heat and cool it.
How much can a contractor ask for up front on a sunroom in California?
No more than $1,000 or 10 percent of the total contract price, whichever is less. That's the rule from California's contractor licensing board, and it covers both asking for and accepting a down payment. If someone wants more before work starts, ask them why.
How do I know if a sunroom contract's payment schedule follows California rules?
Every payment after the deposit should be listed in the contract, and each one should be based on work already done or materials already delivered to your house. The board says so, so check your contract against that before you sign.
Hacienda Heights, CA
Plan a four season room you'll use
Call (626) 269-6285, send the form or email service@haciendaheightssunroomsandpatios.com with your address, a rough room size and whether you want it open to the house, and I'll show up ready to talk about your room.




