A house that sold for $5.1 million tops the list of the most expensive residential real estate sales in Boulder in the past week.

During the past week, a total of 30 residential real estate sales were registered in the area, with an average price of $1.2 million, or $711 per square foot.

The prices in the list below include real estate sales where the title was recorded during the week of Aug. 18 even if the property may have been sold earlier.

10. $1.2 million, single-family house at 7146 Petursdale Court

A single-family house at 7146 Petursdale Court in Boulder, has been sold. The price was $1,175,000. The house was built in 1975 and has a living area of 1,453 square feet. The price per square foot was $809. The house features 4 bedrooms and 4 bathrooms.

9. $1.4 million, condominium at 1231 Cedar Ave.

A sale has been finalized for a condominium at 1231 Cedar Ave. in Boulder. The price was $1,350,000. The condo was built in 2013 and the living area totals 1,950 square feet. The price per square foot ended up at $692. The condominium features 2 bedrooms and 4 bathrooms.

8. $1.4 million, single-family residence at 446 Pearl Street

The detached house at 446 Pearl Street in Boulder has new owners. The price was $1,400,000. The house was built in 1915 and has a living area of 1,788 square feet. The price per square foot was $783. The house features 2 bedrooms and 3 bathrooms.

7. $1.5 million, single-family home at 6969 Harvest Road

The sale of the detached house at 6969 Harvest Road in Boulder has been finalized. The price was $1,475,000. It was built in 1984 and has a living area of 2,746 square feet. The price per square foot was $537. The house features 6 bedrooms and 4 bathrooms.

6. $1.6 million, single-family home at 1069 Crestmoor Drive

The property at 1069 Crestmoor Drive in Boulder has new owners. The price was $1,635,000. The single-family house was built in 1958 and has a living area of 2,534 square feet. The price per square foot was $645. The house features 5 bedrooms and 4 bathrooms.

5. $2.1 million, single-family residence at 1509 Poplar Ave.

A 2,557-square-foot detached house at 1509 Poplar Ave. in Boulder has been sold. The price was $2,100,000, $821 per square foot. The house was built in 2004. The house features 5 bedrooms and 4 bathrooms.

4. $2.3 million, single-family house at 8566 Flagstaff Road

A 4,531-square-foot single-family home at 8566 Flagstaff Road in Boulder, has been sold. The total purchase price was $2,300,000, $508 per square foot. The house was built in 2000. The house features 3 bedrooms and 4 bathrooms.

3. $2.7 million, single-family residence at 5277 Westridge Drive

The sale of the single-family residence at 5277 Westridge Drive in Boulder has been finalized. The price was $2,725,000. It was built in 1995 and has a living area of 3,638 square feet. The price per square foot was $749. The house features 4 bedrooms and 5 bathrooms.

2. $3.7 million, single-family home at 700 Linden Ave.

The single-family house at 700 Linden Ave. in Boulder has new owners. The price was $3,700,000. The house was built in 1979 and has a living area of 3,426 square feet. The price per square foot was $1,080. The house features 4 bedrooms and 3 bathrooms.

1. $5.1 million, multi family at 1860 Alpine Ave.

A multi family at 1860 Alpine Ave. in Boulder, has been sold. The price was $5,085,000. The house was built in 1958 and has a living area of 2,760 square feet. The price per square foot was $1,842. The house features 8 bedrooms and 4 bathrooms.