Question 1

How much would a 20x20 addition cost?

Accepted Answer

A 20×20 addition provides 400 sq ft of new space. At roughly $200–$400 per sq ft, the project could cost around $80,000–$160,000, depending on finishes, foundation, utilities, and location.

Question 2

How much does a 1,200 sq ft addition cost?

Accepted Answer

Using a general range of $200–$400 per sq ft, a 1,200 sq ft home addition may cost approximately $240,000–$480,000. Complex layouts, kitchens, bathrooms, and premium finishes can push the total higher.

Question 3

How much does a 20x40 addition cost?

Accepted Answer

A 20×40 addition equals 800 sq ft. Based on costs of about $200–$400 per sq ft, you could expect a ballpark budget of $160,000–$320,000, before accounting for project-specific requirements.

Question 4

What is the average cost of a 12x24 addition?

Accepted Answer

A 12×24 addition contains 288 sq ft. At approximately $200–$400 per sq ft, a reasonable starting estimate is $57,600–$115,200, with the actual price depending on room type, materials, labour, and foundation work.

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