A house that sold for $30.4 million tops the list of the most expensive residential real estate sales in Boulder in the past week.

In total, 45 residential real estate sales were recorded in the area during the past week, with an average price of $1.7 million. The average price per square foot ended up at $487.

The prices in the list below include real estate sales where the title was recorded during the week of Aug. 11 even if the property may have been sold earlier.

10. $1.7 million, single-family house at 4027 Guadeloupe Street

A 3,017-square-foot detached house at 4027 Guadeloupe Street in Boulder has been sold. The price was $1,700,000, $563 per square foot. The house was built in 1998. The house features 4 bedrooms and 4 bathrooms.

9. $1.7 million, single-family residence at 1240 26th Street

A sale has been finalized for a single-family home at 1240 26th Street in Boulder. The price was $1,700,000. The house was built in 1956 and the living area totals 1,360 square feet. The price per square foot ended up at $1,250. The house features 2 bedrooms and 2 bathrooms.

8. $1.7 million, single-family home at 8709 Valmont Road

The property at 8709 Valmont Road in Boulder has new owners. The price was $1,700,000. The single-family house was built in 1957 and has a living area of 1,722 square feet. The price per square foot was $987. The house features 3 bedrooms and 2 bathrooms.

7. $1.7 million, condominium at 1838 Pearl Street

The sale of the condominium at 1838 Pearl Street in Boulder has been finalized. The price was $1,700,000. It has a living area of 1,859 square feet. The price per square foot was $914. The condominium features 3 bedrooms and 4 bathrooms.

6. $1.8 million, single-family residence at 4160 Caddo Parkway

The property at 4160 Caddo Parkway in Boulder has new owners. The price was $1,815,000. The detached house was built in 1966 and has a living area of 2,770 square feet. The price per square foot was $655. The house features 4 bedrooms and 3 bathrooms.

5. $2.1 million, single-family home at 2949 10th Street

A sale has been finalized for a single-family residence at 2949 10th Street in Boulder. The price was $2,050,000. The house was built in 1947 and the living area totals 2,254 square feet. The price per square foot ended up at $909. The house features 3 bedrooms and 3 bathrooms.

4. $2.1 million, single-family house at 2942 Fourth Street

The detached house at 2942 Fourth Street in Boulder has new owners. The price was $2,100,000. The house was built in 1952 and has a living area of 2,920 square feet. The price per square foot was $719. The house features 4 bedrooms and 4 bathrooms.

3. $2.1 million, single-family house at 1117 Barberry Court

A 2,394-square-foot single-family home at 1117 Barberry Court in Boulder, has been sold. The total purchase price was $2,100,000, $877 per square foot. The house was built in 1986. The house features 4 bedrooms and 3 bathrooms.

2. $2.7 million, single-family residence at 664 Sunshine Canyon Drive

A single-family house at 664 Sunshine Canyon Drive in Boulder, has been sold. The price was $2,650,000. The house was built in 1966 and has a living area of 1,957 square feet. The price per square foot was $1,354. The house features 5 bedrooms and 4 bathrooms.

1. $30.4 million, multi family at 1853 26th Street

A 89,143-square-foot multi family at 1853 26th Street in Boulder has been sold. The price was $30,400,000, $341 per square foot. The house was built in 1993. The house features 143 bedrooms and 153 bathrooms.