How Much Will My 3 Season Room Cost? Price Guide

3 season room cost hero

If you’re interested in adding a 3 season room onto your home, you’re probably curious how much it’ll actually cost you. The best way to accurately estimate your 3 season room cost is by meeting with a contractor. But on average, they can range anywhere from $10,000 to $70,000.

A 3 season sunroom is a cost-effective alternative to a 4-season sunroom, because it’s not designed to be heated or cooled year-round. But don’t let that make you think you won’t receive a great quality room! 3-season sunrooms are a great way to add space onto your home that makes you feel like you’re at a relaxing getaway.

4 Season Room

3 Season Room

Approx. Cost of 3 Season Room

The cost of a 3 season room can range anywhere from $10,000 to $70,000. The range in cost is so large because of a variety of factors. Materials, labor, the market. Let’s break those down. 


Materials used to build a sunroom can have an impact on the overall cost:

  • Frame
  • Windows
  • Doors
  • Roof
  • Deck 

If the cost of materials rises, then that will cause the overall cost to also go up. However, there are also times materials can be on the cheaper end, making the sunroom cost cheaper too. Keeping an eye on the value of materials you plan on using is a great way to save extra cash on your project!


Materials also play hand-in-hand with the market; they’re dependent on each other. If the construction market is booming, materials could be cheaper and vice versa. The U.S. construction market is expected to register a CAGR (compound annual growth rate) of 4.2.% over the years of 2019-2024. It’s expected to ease the trade tensions and boost economic growth.


Companies will charge different amounts for labor. However, just like materials it’s easily influenced by the overall market. Labor is also influenced by location, contractor quality, and installation time.

  • Location– Depending on where contractors are located it will impact costs. For example: companies that are in an economically depressed area may have lower labor costs than companies in places with a higher cost of living.
  • Contractor Quality– A red flag you need to watch out for when shopping for a sunroom is when the cost of labor is suspiciously low. The quality of work isn’t exactly something you should try to lower.
  •  Installation Time– Time is money! Depending on the length of the sunroom installation the less time should lead to a lower price and vice versa. 

Other Factors

Customization has a major impact on the price of your 3-season sunroom. Here at Porch Conversion, all of our orders are custom! But that doesn’t mean it has to be expensive. We offer premium screens, premium cabana door options, and different room components that affect the total cost in different ways.

Connect With Us!

The best way to accurately estimate how much your addition will cost is by scheduling a meeting with one of our Premier Partners. During these meetings you can talk through your design ideas, must-haves, and other features you’re interested in; then they can help determine your estimated total!

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