Four Season Sunrooms in Whittier CA - A Room That Holds Its Temperature
Patio too hot in August and too chilly on winter nights? We build an enclosed, heated and cooled room you can use all year.
What do I get with a four season sunroom in Whittier?
Four season sunrooms in Whittier, CA are fully enclosed rooms built to be heated and cooled, with windows made to stop air leaks, keep out water and hold in heat, so you gain a room you can use in any month.
Most people who call us have a patio, slab or deck they'd use more if it weren't so hot in summer or so open at night. The price moves with the room's size, whether it opens into the house, the frames and glass you pick, how you'll heat and cool it and what shape the base is in. The schedule mostly turns on the city's review, which has to clear before any building starts, and we take care of the permit side for you. If heating and cooling aren't on your list, a three season sunroom may be the better fit, and I'll tell you so when I give you your own figure in the written estimate.
- Licensed and insured.
- Free quotes on site.
- We reply within 1 business day.
Four season sunrooms, inside and out
How we build a four season sunroom
First we settle whether the room opens into the house or stays shut off from it, because that one answer shapes the wall opening, the heating and cooling and everything after. Then I check the slab or deck and the wall the room will join, since a base that isn't level or a weak tie-in to the house shows up later as sticking doors and leaks. We go over frame materials and how you'll heat and cool the room, so it holds its temperature the way you expect, and only then does our crew frame it, set the glass, close it in and tie it to the house. Make sense? A room is only as good as what it sits on and where it meets the house.
Not every patio needs a fully conditioned room. If you mostly want a place for the mild months without running heat or air, a three season sunroom usually costs less and still keeps out wind and bugs. If you already have a covered patio, our patio enclosures close in the space you've got, and I'll tell you honestly whether that cover is ready to become part of a four season room.
Why Whittier homeowners call Sunscape Whittier Sunrooms & Patios for four season rooms
I explain every choice first
I come out myself, measure and walk you through each room type and what it means for how you'll use the space. People who understand what they're buying before they sign end up with a room they actually use.
Licensed and insured for this work
We're licensed and insured. The state licensing board describes general building contractors as builders whose main work needs at least two unrelated trades, and a heated and cooled room on your house is that kind of job, so it's fair to ask any builder how they're set up for it.
We check who reviews your address
We work in Whittier and the cities around it, including unincorporated county areas, so I check your address early to know whether the city or the county handles the job. In the city, Planning has to approve an addition before a building permit is issued, and depending on where it is and how big, that review can involve city staff or a board such as the Design Review Board.
Our own crew, me on site
I learned under a builder who made me tear out anything that wasn't level and square, and I've run this business in Whittier since 2021. Our own small crew does the building with me leading the work, because the base and the spot where the room meets your house are where a job is won or lost.
On a room you'll heat and cool, what's under it and where it joins the house matter most. Tell us about your patio or deck and I'll come take a look.
Get a written estimate for your four season sunroom
Send the form and we'll reply within one business day to set up a visit. I'll come out, look at the job and give you a free written estimate on site, with no pressure to book.
- Licensed and insured.
- Free quotes on site.
- We reply within 1 business day.
What happens after you call about a four season sunroom?
Call or send the form
Call (562) 203-1022 or send the form, and we'll set up a time for me to come out. It helps to have your address, a rough room size and whether you want it open to the house or sealed off.
I look at the job
I come out myself, look at the patio, slab or deck and the wall the room will join, and walk you through the room types. You get the estimate in writing with the room type, frames and heating and cooling spelled out, so you can look it over at home.
We handle the permit side
We find out which office handles your address and take care of the permit paperwork. We'll keep you posted on where things stand while it's under review.
Our crew builds the room
Our own small crew builds it from start to finish with me on site, and we meet the inspector for each visit. When it's done, we walk the room with you and clean up.
Four season sunroom questions
How much does a four season sunroom cost in Whittier?
Across the US, a four season sunroom usually costs about $25,000 to $50,000 per job, and that's the market's range, not our price. Where yours lands depends on the size, the frames and glass, the heating and cooling and the base it sits on. I'll give you your own figure in a written estimate after I've seen the job.
Do I need a permit for a four season sunroom in Whittier?
Yes, the city of Whittier requires a building permit to build onto or convert a building, and Planning has to approve the addition first. An addition under 600 square feet that needs no fire flow review goes through a counter application, while 600 square feet or more goes through a fuller development review, and a lot in a High Fire Severity Zone may also need a fire flow form, which you can check on the city's fire severity map. We check all of this for your address and handle the paperwork.
Does a sunroom that opens to the house count as living space?
In the sunroom industry's specification, a room open to the house counts as habitable space, and a room sealed off from the house with its own heating or cooling does not. Those are the industry's terms, so how your particular room is treated is a question for Whittier Planning during its review. We raise it with them before the design is final.
Which window frames hold heat best in a four season sunroom?
Wood, vinyl and fiberglass frames insulate better than metal ones. Some aluminum frames have a thermal break, a barrier inside the frame that cuts the heat moving through it. In a room you're heating and cooling, the frame is a big part of how well it holds that air, so we go over the options at the estimate.
How do I heat and cool a four season sunroom?
Many owners use a ductless mini-split. One sunroom builder calls a mini-split heat pump a quick and effective way to heat and cool the room without tying into the house's existing ducts. What fits yours depends on whether the room opens into the house, so we plan it once that's settled.
What is the difference between a four season and a three season sunroom?
A four season sunroom is built to be heated and cooled, while a three season room is closed in but meant for the milder months without running heat or air. A three season room usually costs less. So ask yourself, when would you really sit out there?
Other options besides a four season sunroom
Three season sunrooms
A good fit if you'll use the room spring through fall and don't plan to run heat or air conditioning out there.
Patio enclosures
Worth a look if you already have a solid patio cover and want to close in that space without starting from scratch.