William Barnwell

Mt. Pleasant SC

The Cassina Group

51 Closed Sales

$41.8M Total Value

$245K - $3.5M Price Range

$818.9K Average Price

Prior 5 years

About William

Born and raised in the area, William understands all that the Charleston market has to offer. After graduating from Porter-Gaud School, he earned his degree in Real Estate Finance from Clemson University.

He has experience in new home construction, as well as commercial development. William has been practicing real estate ever since obtaining his broker’s license in 2014 and enjoys educating both buyers and sellers about all options afforded to them.

When he is not working, William can be found with friends and family on the boat, golf course or local sporting events.

Home Types: House, Lot/Land, Townhouse, Condo

Years of Experience: 9

Education: Porter-Gaud School Clemson University

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	9
Total Value	$7,066,000
Average Sale Price	$785,111
Price Range	$245K - $2.6M

Buyer Deals
Total Deals	8
Total Value	$7,557,501
Average Sale Price	$944,688
Price Range	$353K - $2.5M

Seller Deals
Total Deals	13
Total Value	$10,488,500
Average Sale Price	$806,808
Price Range	$245K - $2.6M

Buyer Deals
Total Deals	13
Total Value	$12,490,001
Average Sale Price	$960,769
Price Range	$303K - $2.5M

Seller Deals
Total Deals	26
Total Value	$21,976,050
Average Sale Price	$845,233
Price Range	$159K - $3.5M

Buyer Deals
Total Deals	25
Total Value	$19,789,001
Average Sale Price	$791,560
Price Range	$303K - $2.5M

5 Year View

Neighborhoods William is Experienced In

William's Active Listings

$637,500
- 3 Beds
- 2 Baths
- 1,263 Sq Ft
18 Hillcreek Blvd

Charleston, SC
Discover this wonderful three-bedroom, two-bathroom brick ranch spanning 1250 SF in the heart of James Island! This amazing home sits on a spacious corner lot, which spans over half an acre. The property is just 5 minutes from Downtown Charleston and Folly Beach, offering easy access to all that Charleston and the Lowcountry have to offer. As you approach, you are met with gravel street parking,

William Barnwell The Cassina Group

$959,900
- 4 Beds
- 3 Baths
- 1,400 Sq Ft
31 Campbell Dr

Charleston, SC
Welcome to 31 Campbell Drive, a beautifully reimagined 1942 brick cottage that blends timeless charm with modern upgrades. Taken down to the studs and thoughtfully renovated, this 4-bedroom, 3-bathroom home offers approximately 1,400 square feet of stylish, functional living space designed for today's lifestyle.From the moment you arrive, the freshly painted white brick exterior and classic

William Barnwell The Cassina Group

Recently Sold

$299,500

Sold Jun 1, 2026
- 3 Beds
- 3 Baths
- 1,526 Sq Ft
1829 Dogwood Rd

Unit 103

Charleston, SC
- 3% Above List
- $196/SF
- 1 Day On Market
- Current Est. Value $294K
William Barnwell The Cassina Group

$770,000

Sold May 8, 2026
- 4 Beds
- 2.5 Baths
- 2,039 Sq Ft
45 Colleton Dr

Charleston, SC
- 9% Below List
- $378/SF
- 204 Days On Market
- Current Est. Value $798K
William Barnwell The Cassina Group

$619,000

Sold Apr 17, 2026
- 2 Beds
- 1 Bath
- 1,056 Sq Ft
38 Anita Dr

Charleston, SC
- $586/SF
- 3 Days On Market
- Current Est. Value $601K
William Barnwell The Cassina Group

$245,000

Sold Apr 13, 2026
- 2 Beds
- 2 Baths
- 959 Sq Ft
1402 Camp Rd

Unit 7A

Charleston, SC
- $255/SF
- 4 Days On Market
- Current Est. Value $248K
William Barnwell The Cassina Group

$695,000

Sold Apr 6, 2026
- 5 Beds
- 3.5 Baths
- 3,604 Sq Ft
100 Aviary Ct

Summerville, SC
- 3% Below List
- $193/SF
- 124 Days On Market
- Current Est. Value $694K
William Barnwell The Cassina Group

$672,500

Sold Dec 4, 2025
- 2 Beds
- 2.5 Baths
- 1,477 Sq Ft
150 Bee St

Unit 717

Charleston, SC
- 3% Below List
- $455/SF
- 89 Days On Market
- Current Est. Value $677K
William Barnwell The Cassina Group

$515,000

Sold Nov 20, 2025
- 3 Beds
- 2.5 Baths
- 1,675 Sq Ft
397 Parkdale Dr

Charleston, SC
- 8% Below List
- $307/SF
- 144 Days On Market
- Current Est. Value $488K
William Barnwell The Cassina Group

$2,550,000

Sold Nov 14, 2025
- 4 Beds
- 5 Baths
- 3,200 Sq Ft
4684 Cedar Island Ct

Awendaw, SC
- 11% Below List
- $797/SF
- 57 Days On Market
- Current Est. Value $2M
William Barnwell The Cassina Group

$700,000

Sold Jul 29, 2025
- 4 Beds
- 2 Baths
- 1,687 Sq Ft
1107 S Shadow Dr

Mount Pleasant, SC
- 8% Below List
- $415/SF
- 19 Days On Market
- Current Est. Value $735K
William Barnwell The Cassina Group

Awards and Designations

NAR - National Association of Realtors

Agent License: South Carolina 92898

William Barnwell

(843) 994-3309

William Barnwell

About William

Transaction History

Seller Deals

Buyer Deals

Seller Deals

Buyer Deals

Seller Deals

Buyer Deals

Production Over Time

5 Year View

Neighborhoods William is Experienced In

William's Listings and Deals

William's Active Listings

Recently Sold

Awards and Designations