HarborviewDecks & Exteriors

Sunrooms

Sunroom Builder — Charleston, SC & Charlotte, NC

3-season and 4-season sunroom additions that function as true rooms of your home — with thermally broken glazing, dedicated HVAC, and finish work that integrates seamlessly with the existing structure.

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$55K–$220K+

Typical Range

3 & 4

Season Options

Low-E

Thermally Broken Glass

7-Year

Warranty

The Room Between Indoors and Outdoors

3-Season Sunrooms

Uninsulated or minimally insulated. No HVAC. Comfortable in spring, fall, and mild winter days. The budget-friendly option for seasonal use.

4-Season Sunrooms

Fully insulated, thermally broken glazing, dedicated mini-split or HVAC extension. Usable year-round in any weather.

Cathedral Ceiling Sunrooms

Vaulted ceilings with structural glazing, premium finishes, and the dramatic volume that makes a sunroom a signature space.

Glazing Systems

Low-E coatings, thermally broken frames, double and triple-pane options — specified for your orientation and climate exposure.

HVAC Integration

Existing system extension or dedicated mini-split — evaluated for your specific home before the contract is signed.

HOA & Permitting

Full permitting and HOA/ARB coordination in Charleston and Charlotte. We handle the process so you don't have to.

Not sure if a sunroom is the right fit? A screen room offers a similar outdoor-connected experience at a lower cost — ideal for homeowners who want bug-free outdoor living without full climate control. For open-air shade, explore our pergola and covered patio options. And if you are building an entirely new outdoor living program alongside a custom deck, we design all elements together for seamless integration. For ground-up builds, see our custom home and renovation services.

Sunroom Questions, Answered

Ready to Add a Sunroom?

Tell us about your home and how you want to use the space. We will give you an honest assessment.