How Much Do Four-Season Rooms Cost?

The four-season room is not exactly a room addition. Instead, it is a fully enclosed and climate-controlled space. It’s constructed almost entirely of glass, which allows for ample sunshine and an enhanced view of the outdoors. The advanced quality materials of today’s four-season rooms do more than simply ensure a weatherproof environment. They also allow you to control your indoor air quality with maximum efficiency, making a sunroom one of the most comfortable and scenic rooms of your home.

How Can I Add a Four-Season Room to My Home?

Whether you call it a sunroom, a solarium, or a conservatory, you can add a 4-season room to your home in one of two ways:

• Build it on-site, which requires a foundation slab to be poured with post and beam construction.
• Add a completely prefabricated structure—which is constructed off-site in a climate controlled facility—and have it transported to your home.

In either case, on-site construction may involve demolition, site prep, and pouring a concrete foundation.

For building on-site, expect to need framing, electrical, and molding. The prefabricated unit may be built at the facility to meet your custom design specification. In either case, your personalized design will, of course, affect the basic cost.

Cost of a Four-Season Room

Construction of a four-season room can range in cost from $10,000 to $20,000 at the low end to as high as $72,000 to $100,000+. Again, your geographical location, the size of the unit, your design, and whether you select an all-glass roof or a framed roof with skylights all have a bearing on the expense involved.

Glass Windows and/or Ceiling Options for a Four-Season Room

The glass you choose will make a big difference in your four-season room. The impact and the enjoyment this room provides comes from having a direct engagement with the outdoor view while maintaining a comfortably controlled indoor climate.

Picking the right window glass depends largely on what the climate is like where you live and what direction your sunroom faces. It is important to choose the correct low-E glass for your sunroom so that is stays an optimal temperature for whatever region you are in. For a complete guide to home window glass types and how to pick the right one, click here.

How Much Do Contractors Charge for Four-Season Rooms?

If you choose to have your four-season room built on-site, this will mean hiring a contractor—or possibly even multiple contractors. You will also need the necessary permits and to meet your local building codes. Here is a rough idea of what contractors tend to charge for their labor. Keep in mind that the averages vary based on location, complexity of project, and level of experience:

• Carpenters: Between $40 and $80
• Electricians: Between $50 and $100
• Painters: Between $20 and $35 per hour

From the ground up, a rough-base estimate of new construction of a sunroom is between $120 and $300 per square foot.

The average cost for sunrooms with traditional (non-glass) ceilings and casement windows with low-E, laminated, or tempered glazed glass and screens average $2400 for materials and an average of $240 for labor. Large aluminum-clad venting skylights with screens run on average $425 each, not including the cost for time and materials to construct the roof.

While prefabricated units can cost a little more than an on-site build, they provide all the state-of-the-art materials and construction methods to provide a modern, modular patio room, sunroom, or conservatory—and are often completed in less time than conventional construction.

Start with getting estimates to help you decide how you want to advance your plans. Plus, you’ll have the added and invaluable bonus of learning just what you need to create the living space of your dreams.