Four season sunroom in Cary NC with large windows in wintertime

Four-Season Sunroom Additions in Cary, NC

Four-season sunrooms add a sunny place to work or unwind, with indoor comfort through every season.

NC License #100043 • Fully Insured • Building in the Triangle Since 2021

Bring the view into everyday life

A desk overlooking the backyard can make a workday feel different. So can a bright sitting room where you can settle in on a cold morning.

AG Construction Management builds four-season sunroom additions in Cary for homeowners who want to use the space throughout the year. Large windows bring in daylight, while the room's insulation and heating and cooling support everyday use.

4 season sunroom with vaulted ceiling
Outdoor shot of a 4 season sunroom with glass windows
Inside 4 season sunroom view with vaulted ceiling, sitting chair, and throw rug

What makes a sunroom suitable for all four seasons?

Comfort depends on how the whole room is built. The roof and floor need attention alongside the walls, with insulation and air sealing appropriate to the design. Gaps around windows or where the addition meets the house can undermine that work.

Window selection matters too. Glass that limits unwanted heat gain can help manage direct sun, while insulating performance helps reduce heat transfer. The right combination depends on the room's exposure and construction.

Heating and cooling must be planned for the added space. The design should establish whether the home's existing system can serve the room or whether a separate system is appropriate. Adding windows and a heater to an enclosure does not, by itself, establish a suitable year-round room.

Connect the addition to your home

The opening into the sunroom affects how it becomes part of daily life. A room off the kitchen might accommodate a breakfast table; one beside a living area might extend the space for gathering.

Floor heights and door placement affect movement between rooms. A larger opening in an exterior wall may involve structural work. Outside, the new roof needs to connect to the house with details that manage rainwater.

Explore sunroom design for more on arranging the room and coordinating its appearance with your home.

4 season sunroom with a mini split unit
Abdallah Atieh General Contractor in Cary NC

Abdallah Atieh • Founder

What goes into the budget?

A four-season addition includes the work needed to enclose and condition the space. Along with the foundation and framing, the budget needs to account for insulated construction and windows. Heating and cooling add equipment and installation costs.

The connection to the house can also affect the scope. Changes to an exterior wall, a complex roof connection or an existing structure that needs reinforcement can add work before finishes begin.

For a space intended mainly for mild weather, a three-season sunroom is another option to consider.

Sunroom Service Areas

We are based in Cary, NC, and take on projects across the Triangle. If you're outside these cities, get in touch — we travel for the right project.

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What Our Clients Have to Say

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"We spoke to 6-8 GCs and AG-CM stood out with their proactive and honest proposal and projections to complete the project in the right way. We will definitely contact them for any future projects."

Jimmy Assal

Raleigh Home Remodel
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"AG-CM was very professional and courteous. They showed up on time and were very neat throughout our remodel. I was always informed on issues or delays. I look forward to working with them in the future."

Khalil Ibrahim

Apex Bathroom Remodel
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"Abdallah's project management was complete, very understandable, on schedule and with no unexpected additions. In fact, we asked him to include several last-minute changes that he adeptly folded into the schedule and delivered flawlessly."

Richard Gurlitz

Chapel Hill Carport Addition
4 season sunroom with large wooden windows, cushioned armchairs, a throw blanket, table, and decorative bowl.
outdoor image of a 4 season sunroom
Cozy 4 season sunroom

Four-season sunroom questions

What's the difference between the types of sunrooms?

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A three-season sunroom has windows or enclosure panels that close to provide shelter from the weather. It is designed for seasonal use, so temperatures inside change with conditions outside. A four-season sunroom adds insulated construction and permanent heating and cooling for year-round use.

A screened porch is another option for enjoying the outdoors. Screens keep insects out while letting air flow through, but provide less protection from wind and rain than an enclosed sunroom.

Can an existing sunroom become a four-season room?

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Possibly. The existing foundation and framing need to be suitable for the proposed work. Windows, insulation and heating and cooling must also be evaluated. The condition of the current room determines whether conversion is practical and how much reconstruction it requires.

Will a four-season room lower my energy bills?

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Adding conditioned space can increase the energy your home uses. Efficient windows and insulation help control that demand, but they do not establish a bill reduction. Room size, sun exposure and the heating and cooling system all affect operating costs.

4 season sunroom in winter

Add a room you can enjoy every day

Discuss a four-season sunroom with AG-CM and explore how a year-round addition could connect to your Cary home.