Dorothy Cosby Real Estate Agent - Coldwell Banker Realty

906 Whistling Duck Dr, Upper Marlboro, MD For Sale $729,900 - listed by Dorothy Cosby — For Sale $729,900

Section Image — For Sale $729,900

Dorothy Cosby listing agent for 5257 Ferry Branch Ln, Lothian, MD - sold for $950,000 — Sold $950,000

Dorothy Cosby buyer's agent for 1001 Saint Paul St Unit 2D, Baltimore, MD - sold for $64,000 — Sold $64,000

Dorothy Cosby listing agent for 6517 Lehnert St, Gwynn Oak, MD - sold for $210,000 — Sold $210,000

Dorothy Cosby buyer's agent for 906 Whistling Duck Dr, Upper Marlboro, MD - sold for $500,000 — Sold $500,000

Dorothy Cosby listing agent for 2491 Cheyenne Dr, Gambrills, MD - sold for $548,000 — Sold $548,000

Dorothy Cosby

Coldwell Banker Realty

9 Closed Sales

$3.9M Total Value

$64K - $950K Price Range

$432.4K Average Price

Prior 5 years

About Dorothy

Home Types: House, Condo, Townhouse

Years of Experience: 5

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	2
Total Value	$1,160,000
Average Sale Price	$580,000
Price Range	$210K - $950K

Buyer Deals
Total Deals	1
Total Value	$64,000
Average Sale Price	$64,000

Seller Deals
Total Deals	3
Total Value	$1,708,000
Average Sale Price	$569,333
Price Range	$210K - $950K

Buyer Deals
Total Deals	1
Total Value	$64,000
Average Sale Price	$64,000

Seller Deals
Total Deals	7
Total Value	$3,327,900
Average Sale Price	$475,414
Price Range	$210K - $950K

Buyer Deals
Total Deals	2
Total Value	$564,000
Average Sale Price	$282,000
Price Range	$64K - $500K

Neighborhoods Dorothy is Experienced In

Mid-Town Belvedere

1 Sale

Dorothy's Active Listings

$729,900
- 4 Beds
- 3.5 Baths
- 3,503 Sq Ft
906 Whistling Duck Dr

Upper Marlboro, MD
“Welcome Home” be the first to live in this newly renovated luxurious colonial-style home in the highly desirable community of Perrywood. Step into the bright and sunny two-story foyer to admire the grand staircase and chandelier, the open concept flows from the home office space that seamlessly blends with the interior aesthetics with functionality for your workspace. Double columns lead to the

Dorothy Cosby Coldwell Banker Realty

Recently Sold

$950,000

Sold Apr 15, 2026
- 6 Beds
- 4.5 Baths
- 5,856 Sq Ft
5257 Ferry Branch Ln

Lothian, MD
- 5% Below List
- $162/SF
- 69 Days On Market
- Current Est. Value $1M
Dorothy Cosby Coldwell Banker Realty

$210,000

Sold Jul 31, 2025
- 4 Beds
- 1.5 Baths
- 1,442 Sq Ft
6517 Lehnert St

Gwynn Oak, MD
- $146/SF
- 17 Days On Market
- Current Est. Value $346K
Dorothy Cosby Coldwell Banker Realty

$548,000

Sold Sep 26, 2024
- 3 Beds
- 4 Baths
- 2,048 Sq Ft
2491 Cheyenne Dr

Gambrills, MD
- $268/SF
- 26 Days On Market
- Current Est. Value $534K
Dorothy Cosby Coldwell Banker Realty

$260,000

Sold Sep 1, 2022
- 3 Beds
- 1 Bath
- 925 Sq Ft
5515 Duchaine Dr

Lanham, MD
- 4% Below List
- $281/SF
- 0 Days On Market
- Current Est. Value $334K
Dorothy Cosby Coldwell Banker Realty

$360,000

Sold May 17, 2022
- 4 Beds
- 2 Baths
- 1,348 Sq Ft
6 Bertram Dr

Glen Burnie, MD
- 3% Above List
- $267/SF
- 7 Days On Market
- Current Est. Value $399K
Dorothy Cosby Coldwell Banker Realty

$274,900

Sold Nov 16, 2021
- 2 Beds
- 2 Baths
- 1,393 Sq Ft
14315 Colonel Clagett Ct

Upper Marlboro, MD
- $197/SF
- 9 Days On Market
- Current Est. Value $292K
Dorothy Cosby Coldwell Banker Realty

Dorothy Cosby

(855) 507-2104

(855) 507-2104

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