How much does it cost to build a 20×20 sunroom?
Sunroom Cost per Square Foot
Square Footage | 3-Season Sunroom | 4-Season Sunroom |
---|---|---|
8 x 8 | $5,120 – $14,720 | $12,800 – $25,600 |
10 x 10 | $8,000 – $23,000 | $20,000 – $40,000 |
14 x 14 | $15,680 – $45,080 | $39,200 – $78,400 |
20 x 20 | $32,000 – $92,000 | $80,000 – $160,000 |
How much does a 10×12 sunroom cost?
Sunroom Cost
Size | 3-Season | 4-Season |
---|---|---|
10×10 | $8,000 – $23,000 | $20,000 – $35,000 |
10×12 | $9,500 – $27,500 | $24,000 – $42,000 |
10×16 | $12,500 – $37,000 | $32,000 – $56,000 |
10×20 | $16,000 – $46,000 | $40,000 – $66,000 |
How much does it cost to build a 10×10 sunroom?

Sunroom Costs Per Square Foot
Size | Average Cost (Installed) |
---|---|
8 x 10 (80 Square Feet) | $12,000 – $24,000 |
10 x 10 (100 Square Feet) | $15,000 – $30,000 |
12 x 10 (120 Square Feet) | $18,000 – $36,000 |
12 x 20 (240 Square Feet) | $36,000 – $72,000 |
How do you build a sunroom on an existing patio?
Option 1: Building a Sunroom On Your Existing Porch
- Select Your Windows.
- Determine Your Electrical Requirements for Building a Sunroom.
- Select Your Flooring Option.
- Frame It Up.
- Install Your Windows and Door.
- Install the Electrical Wiring and Fixtures.
- Jazzing It Up on the Exterior.
- Finish the Interior.
Which direction should sunroom face?

Do you want a sunroom that catches as much sun as possible throughout the day? If so, build your sunroom on a south-facing section of the house. If you like to watch the sun come up then an east facing position is best, while a west facing room allows you to enjoy the late afternoon sun and sunset.
Can you turn a patio into a sunroom?
If you’re a homeowner that gives up their porch because of direct sunlight, extremely hot weather, or cold temperatures, then you’ve come to the right place. The solution is simple, convert your porch to a beautiful sunroom by building glass covers.
Can you build a sunroom on a slab?
Depending upon their size, the kind of materials they are fabricated from, and the methods used in their construction, sunrooms can be erected on three different foundation types: a preexisting deck, a poured concrete slab, and a crawl space.