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What's The Cost of Adding A Sunroom?

Adding a sunroom is a great way to expand your living space and add value to your home. And let’s face it, who doesn’t like having the option of relaxing in the sun while enjoying a glass of wine or reading a book on a gorgeous sunny day?


  • Increases your home's appraisal value, curb appeal, and has a 50%+ return on investment.

  • Adds extra, functional living space.

  • Four-season rooms are temperature controlled and useable year-round.

  • Adds abundant natural light and blends the indoors and outdoors together.

  • Stay cool in the shade and avoid harmful UV rays.

  • Keep pests away.

  • Many different sunroom designs, types, sizes, and customizations are available.

  • Install on the south or west side of the home for the most sunlight and warmth.


  • Size and type

  • Three vs. four-season room

  • Prefabricated vs. custom-built

  • Quality of materials

  • Finishing options and add-ons

  • Current foundation status

  • On-site construction and installation

  • Location


An all-season or 4-season room is integrated into the existing construction of the home with insulation, electricity, an HVAC. Three-season sunrooms are separate structures from the house and lack those amenities.

Three-season sunrooms are the least expensive route, but lack insulation and electricity, which makes them hotter in the summer and colder in the winter than 4-season models. Although heating or cooling systems can be installed separately from the home.

The least expensive 3-season rooms are prefab kits, screened-in porches, and enclosed patios with single-pane glass that are installed on an existing patio or deck. Costs increase for custom-built rooms with tinted, dual-pane glass windows, and a concrete foundation. Factors to consider:

  • Not insulated. Too cold in winter; may be too hot in summer

  • Separated from home by an exterior door.

  • Not connected to the home’s HVAC system. Must install fans, AC units, or space heaters.

  • Basic aluminum frames may not be strong enough to withstand extreme weather conditions.

  • Best for milder climates without much temperatures fluctuations.

  • Standard rooms have basic single-pane glass that's poorly insulated.

Four-season sunrooms provide more year-round use. They are temperature-controlled with insulated walls, ceiling, and flooring, and openly connects to the rest of the house. Another option is adding a connecting door and separate heating and cooling system to keep utility bills down. Factors to consider:

  • Cost more; fully functional year-round.

  • Connected to home's HVAC system for temperature control.

  • Open extension of the home, optionally separated by an interior door for privacy.

  • Insulated walls, floor, roof. Dual-pane windows with tinting options.

  • Vinyl reinforced with steel or aluminum, fiberglass, wood, or thermally engineered frames promote insulation, and resist cracking, corrosion, and warping.

  • Requires proper insulation and sealing to keep the rest of the house energy efficient.


A sunroom costs $100 to $350 per square foot on average. A 3-season room costs $8,000 to $50,000 to build, and a 4-season room costs $20,000 to $80,000 to add. A sun porch or prefab sunroom addition costs $5,000 to $30,000, and a glass solarium costs $30,000 to $150,000. Connect with home addition contractors near you for an accurate estimate, or view the sunroom sizes and prices below.


There is no right or wrong way to enjoy a Patio Enclosures screen room or sunroom, it’s really up to you. However, over the years our customers have shared how they enjoy their rooms. Below are a few favorites!

  • Morning wake-up room — perfect room to drink coffee, breathe in the fresh air and mentally prepare to tackle the day

  • Kids play room — a great sunlit room for the little ones to play games, read and get fresh air in a clean and protected space

  • Pet sunbathing room — the ideal room for pets to sunbathe in and enjoy the breeze without having to worry about ticks and mud

  • Hobby and craft room — perfect room for games, puzzles, reading, or any crafty project that needs lots of light

  • Yoga / workout room — with tons of natural light, the sunroom becomes a workout space, a major upgrade from the dark and depressing basement

  • Dining room — eat meals together in our sunroom as you don’t have to deal with bugs or worry about the weather

  • Guest entertaining room (ventilated space) — every time you have company, we always head to the sunroom because you can spread out, open the windows and enjoy the breeze — during the pandemic the extra ventilation has been a life saver

  • Winding down after a long day room — no matter how hectic the days are, you can always look forward to winding down in my sunroom and enjoying nature all year long in your perfectly protected space

  • Family room — have more laughs and fun family time together since because it’s a place you all want to be

  • Home office — when in an office building, everyone longs for a window seat — now you can have the best seat with your garden view right outside

  • Napping room — the sunroom is the perfect place for an afternoon nap and your pet will agree

  • Staycation place — consider adding a little tiki bar, or hot tub to have a vacation place right inside your house available almost every day

Indeed, adding a sunroom is a wonderful way to bring more space, light and joy to your home regardless of how you use it!



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