Lesley Semmelhack

Brooklyn NY

Corcoran Group

70 Closed Sales

$170.6M Total Value

$800K - $8M Price Range

$2.4M Average Price

Prior 5 years

About Lesley

Lesley Semmelhack is a distinguished presence in New York City and Brooklyn real estate, known for her polished approach, strategic acumen, and an unwavering commitment to excellence. With over two decades of experience navigating the complexities of the New York market, Lesley has earned her place among the top-performing agents in the city—recognized for her discretion, results-driven mindset, and deep market knowledge.A trusted advisor to a discerning clientele, Lesley’s expertise spans co-ops, condos, and townhouses across Brooklyn and Manhattan, with a focus on properties that demand both nuance and negotiation strength. Her background in design informs her ability to see potential where others may not, and her ability to position a property—both aesthetically and strategically—is a hallmark of her success.Lesley consistently ranks among the top agents at her firm, a testament to her work ethic, reputation, and the lasting relationships she builds with clients and industry peers alike. Known for her calm confidence and meticulous attention to detail, she brings clarity and sophistication to every transaction.In a market where experience matters, Lesley Semmelhack stands apart—for her tenure, her track record, and her instinctive ability to deliver at the highest level.

Home Types: Co-op, Condo, House, MultiFamily, Townhouse

Years of Experience: 21

Education: BA: Physical and Biological Anthropology

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	8
Total Value	$24,895,000
Average Sale Price	$3,111,875
Price Range	$1.2M - $6.1M

Buyer Deals
Total Deals	4
Total Value	$7,020,000
Average Sale Price	$1,755,000
Price Range	$1.3M - $2.3M

1 Year View by Quarter

Seller Deals
Total Deals	24
Total Value	$68,493,000
Average Sale Price	$2,853,875
Price Range	$525K - $8M

Buyer Deals
Total Deals	10
Total Value	$18,216,314
Average Sale Price	$1,821,631
Price Range	$946K - $3.8M

Seller Deals
Total Deals	56
Total Value	$139,741,555
Average Sale Price	$2,495,385
Price Range	$505K - $8M

Buyer Deals
Total Deals	14
Total Value	$30,884,636
Average Sale Price	$2,206,045
Price Range	$946K - $7.5M

5 Year View

Neighborhoods Lesley is Experienced In

Lesley's Open Houses

$2,450,000

Open Thu 5:30PM - 7PM
- 2 Beds
- 2 Baths
- 1,440 Sq Ft
438 12th St

Unit 6D

Brooklyn, NY
New at the Ansonia Clock Factory! Welcome to 438 12th Street #6D - a 1,440 sf two bedroom, two bath condominium (originally designed as a three bedroom - see both floorplans) which has the layout that makes you understand why people fall in love with loft-style living and never look back. Enter to east-facing factory windows in a landmarked conversion. Morning light is nearly ethereal and happens

Lesley Semmelhack Corcoran Group

Lesley's Active Listings

$1,195,000
- 1 Bed
- 1 Bath
PERFECTION IN PARK SLOPE! There's a reason Park Slope continues to capture the imagination - timeless architecture, leafy streets, and the quiet luxury of living moments from Prospect Park. This elegant one-bedroom co-op just steps away from the park embodies that appeal with a seamless blend of historic charm and thoughtful modern upgrades. Set within a distinguished neo-Classical

Lesley Semmelhack Corcoran Group

$1,295,000
- 2 Beds
- 1 Bath
New in Park Slope This beautifully renovated two-bedroom, one-bath home sits just half a block from Prospect Park and offers exceptional flexibility, a private roof terrace, and thoughtfully designed interiors. Clean pre-war details - original moldings, hardwood floors, and exposed brick - create a warm, timeless foundation. The professional chef-designed kitchen features

Lesley Semmelhack Corcoran Group

Recently Sold

$5,275,000

Sold Jul 9, 2026
- 7 Beds
- 4.5 Baths
- 800 Sq Ft
407 Adelphi St

Brooklyn, NY
- 8% Above List
- $6,594/SF
- 25 Days On Market
- Current Est. Value $4M
Lesley Semmelhack Corcoran Group

$6,100,000

Sold Jul 9, 2026
- 7 Beds
- 3 Baths
- 7,200 Sq Ft
267 6th Ave

Brooklyn, NY
- $847/SF
- 0 Days On Market
- Current Est. Value $7M
Lesley Semmelhack Corcoran Group

$2,100,000

Sold Jun 12, 2026
- 2 Beds
- 1.5 Baths
27 Prospect Park W

Unit 12B

Brooklyn, NY
- 14% Above List
- 18 Days On Market
- Current Est. Value $2M
Lesley Semmelhack Corcoran Group

$2,360,000

Sold Jun 1, 2026
- 6 Beds
- 3 Baths
- 3,300 Sq Ft
326 Quincy St

Brooklyn, NY
- 3% Above List
- $715/SF
- 31 Days On Market
- Current Est. Value $2M
Lesley Semmelhack Corcoran Group

$1,205,000

Sold Jan 13, 2026
- 1 Bed
- 1 Bath
117 Park Place

Unit 3

Brooklyn, NY
- 3% Above List
- 21 Days On Market
- Current Est. Value $1M
Lesley Semmelhack Corcoran Group

$2,710,000

Sold Oct 24, 2025
- 3 Beds
- 3 Baths
- 1,805 Sq Ft
722 President St

Unit 1

Brooklyn, NY
- $1,501/SF
- 16 Days On Market
- Current Est. Value $4M
Lesley Semmelhack Corcoran Group

$2,250,000

Sold Sep 17, 2025
- 3 Beds
- 2 Baths
- 1,253 Sq Ft
722 President St

Unit 2

Brooklyn, NY
- $1,796/SF
- 26 Days On Market
- Current Est. Value $4M
Lesley Semmelhack Corcoran Group

$2,895,000

Sold Sep 3, 2025
- 3 Beds
- 2.5 Baths
- 1,608 Sq Ft
722 President St

Unit 3

Brooklyn, NY
- $1,800/SF
- 0 Days On Market
- Current Est. Value $4M
Lesley Semmelhack Corcoran Group

$930,000

Sold Jun 26, 2025
- 1 Bed
- 1 Bath
915 President St

Unit 2-F

Brooklyn, NY
- 4% Above List
- 22 Days On Market
- Current Est. Value $891K
Lesley Semmelhack Corcoran Group

Lesley Semmelhack

(917) 924-1595

Homes for Sale by City

Lesley Semmelhack

About Lesley

Transaction History

Seller Deals

Buyer Deals

Production Over Time

1 Year View by Quarter

Seller Deals

Buyer Deals

Seller Deals

Buyer Deals

Production Over Time

5 Year View

Neighborhoods Lesley is Experienced In

Lesley's Listings and Deals

Lesley's Open Houses

Lesley's Active Listings

Recently Sold