Generally, in the United States, the average square footage of a 3-bedroom house falls between 1,200 and 1,400 square feet. However, this figure can fluctuate significantly based on regional preferences and construction practices., The average square footage of a 3-bedroom house typically ranges from 1,200 to 2,500 square feet. However, this number can vary depending on location, with houses in urban areas tending to be on the smaller side., When thinking about a 3-bedroom house, size can greatly vary depending on various factors, including location, architectural style, and the overall layout of the residence. Generally, most 3-bedroom homes offer a range of square footage. On average, you might find homes in the range of 1,200 to 1,800 square feet., The average square footage of a three-bedroom home varies significantly depending on several key factors, including geographical location, age of the property, and architectural style. Typically, you can expect three-bedroom houses to range from approximately 1,200 to 2,500 square feet., According to House Plans, three-bedroom homes in the United States have a wide range of sizes, from 976 square feet to over 2,600 square feet. The average three-bedroom, two-bath American home today is 1,200 to 1,400 square feet, well below the 2009 average home size of 2,164 square feet., Generally, however, a 3 bedroom house will require a minimum of 90-100 square meters to provide a comfortable living space. If the house is larger and/or has additional amenities such as a porch, a patio, or even a game room, then this amount can be expected to increase..