A house that sold for $5.7 million tops the list of the most expensive residential real estate sales in Boulder in the past week.

The area saw a total of 39 residential real estate sales during the past week, averaging $1.3 million. The average price per square foot was $863.

The prices in the list below include real estate sales where the title was recorded during the week of Sept. 29 even if the property may have been sold earlier.

10. $1.7 million, single-family house at 2949 Tincup Circle

A 2,296-square-foot single-family home at 2949 Tincup Circle in Boulder, has been sold. The total purchase price was $1,742,500, $759 per square foot. The house was built in 1982. The house features 3 bedrooms and 2 bathrooms.

9. $1.8 million, single-family residence at 1743 Hawthorn Place

A single-family home at 1743 Hawthorn Place in Boulder, has been sold. The price was $1,765,000. The house was built in 1979 and has a living area of 1,381 square feet. The price per square foot was $1,278. The house features 3 bedrooms and 2 bathrooms.

8. $1.8 million, detached house at 525 13th Street

The single-family home at 525 13th Street in Boulder has new owners. The price was $1,810,000. The house was built in 1964 and has a living area of 2,212 square feet. The price per square foot was $818. The house features 3 bedrooms and 3 bathrooms.

7. $2.2 million, detached house at 781 Grant Place

The sale of the single-family house at 781 Grant Place in Boulder has been finalized. The price was $2,175,000. It was built in 1987 and has a living area of 1,871 square feet. The price per square foot was $1,162. The house features 3 bedrooms and 2 bathrooms.

6. $2.3 million, single-family residence at 1580 Moss Rock Place

The property at 1580 Moss Rock Place in Boulder has new owners. The price was $2,300,000. The detached house was built in 1968 and has a living area of 1,436 square feet. The price per square foot was $1,602. The house features 4 bedrooms and 3 bathrooms.

5. $2.8 million, single-family home at 3500 Bison Drive

A sale has been finalized for a single-family residence at 3500 Bison Drive in Boulder. The price was $2,800,000. The house was built in 1988 and the living area totals 1,663 square feet. The price per square foot ended up at $1,684. The house features 3 bedrooms and 3 bathrooms.

4. $2.8 million, single-family house at 2750 Seventh Street

A 1,739-square-foot single-family residence at 2750 Seventh Street in Boulder has been sold. The price was $2,847,450, $1,637 per square foot. The house was built in 1952. The house features 3 bedrooms and 3 bathrooms.

3. $2.9 million, single-family house at 2695 Stanford Ave.

The property at 2695 Stanford Ave. in Boulder has new owners. The price was $2,850,000. The detached house was built in 1964 and has a living area of 2,493 square feet. The price per square foot was $1,143. The house features 4 bedrooms and 3 bathrooms.

2. $3 million, single-family home at 1816 Mariposa Ave.

The detached house at 1816 Mariposa Ave. in Boulder has new owners. The price was $2,950,000. The house was built in 1953 and has a living area of 2,629 square feet. The price per square foot was $1,122. The house features 5 bedrooms and 4 bathrooms.

1. $5.7 million, single-family home at 1860 Bluebell Ave.

A 3,695-square-foot single-family residence at 1860 Bluebell Ave. in Boulder, has been sold. The total purchase price was $5,650,000, $1,529 per square foot. The house was built in 1954. The house features 4 bedrooms and 8 bathrooms.