Charleston, SC Fourplexes for Sale

Charleston, South Carolina offers a charming blend of historic architecture and modern amenities, with attractions like the historic district and vibrant waterfront. The city boasts a mild climate and beautiful coastal scenery, including nearby beaches and historic plantations. Charleston's renowned culinary scene features a mix of Southern cuisine and fresh seafood, making it a food lover's paradise. With a low crime rate and strong sense of community, it provides a welcoming and family-friendly atmosphere. Additionally, its rich cultural heritage and numerous local festivals make it a lively and engaging place to call home.

Listings: 25
Updated: Jun 21, 2026
Median Price: $999,000
Median Size: 1,920 sqft
Higher-Confidence Cash-Flow Candidates: 5

Cash-flow figures are directional screening signals only. Verify rent, unit mix, taxes, insurance, financing, condition, and listing status independently.

Compare Charleston listings with the national cash-flow rankings

Available Listings

Charleston Duplex, Triplex, and Fourplex Listings

25 results

16 Killians St, Charleston, SC, 29403

$900,000

16 Killians St, Charleston, SC, 29403

Triplex

Beds: 9
Baths: 3
Size: -- sqft

Est. Rent: $8,160/mo
Est. Cash Flow: +$1,495/mo
Modeled Cost: $6,665/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $4,470/mo

113 America St Unit A, B, C, D, Charleston, SC, 29403

$1,000,000

113 America St Unit A, B, C, D, Charleston, SC, 29403

Fourplex

Beds: 6
Baths: 4
Size: 1,988 sqft

Est. Rent: $8,380/mo
Est. Cash Flow: +$1,112/mo
Modeled Cost: $7,268/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $4,967/mo

1746 E Avalon Cir, Charleston, SC, 29407

$440,000

1746 E Avalon Cir, Charleston, SC, 29407

Duplex

Beds: 4
Baths: 2
Size: 1,500 sqft

Est. Rent: $3,760/mo
Est. Cash Flow: +$548/mo
Modeled Cost: $3,212/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $2,185/mo

1521 Brookbank Ave, Charleston, SC, 29412

$725,000

1521 Brookbank Ave, Charleston, SC, 29412

Duplex

Beds: 6
Baths: 3
Size: 1,926 sqft

Est. Rent: $5,300/mo
Est. Cash Flow: +$186/mo
Modeled Cost: $5,114/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $3,601/mo

2021 Fremont St, Charleston, SC, 29412

$525,000

2021 Fremont St, Charleston, SC, 29412

Duplex

Beds: 2
Baths: 2
Size: 986 sqft

Est. Rent: $3,880/mo
Est. Cash Flow: +$168/mo
Modeled Cost: $3,712/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $2,608/mo

1 Drews Aly, Charleston, SC, 29403

$934,000

1 Drews Aly, Charleston, SC, 29403

Triplex

Beds: 4
Baths: 3.5
Size: 1,469 sqft

Est. Rent: $6,190/mo
Est. Cash Flow: -$270/mo
Modeled Cost: $6,460/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $4,639/mo

163 Romney St, Charleston, SC, 29403

$1,000,000

163 Romney St, Charleston, SC, 29403

2-4 Units

Beds: 6
Baths: 3
Size: 2,116 sqft

Est. Rent: $6,570/mo
Est. Cash Flow: -$336/mo
Modeled Cost: $6,906/mo
Estimate Confidence: Low
Rent Source: Estimated

Est. P&I: $4,967/mo

81 Simons St, Charleston, SC, 29403

$850,000

81 Simons St, Charleston, SC, 29403

Duplex

Beds: 6
Baths: 2.5
Size: 2,356 sqft

Est. Rent: $5,440/mo
Est. Cash Flow: -$401/mo
Modeled Cost: $5,841/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $4,222/mo

1038 Harbor View Rd, Charleston, SC, 29412

$799,000

1038 Harbor View Rd, Charleston, SC, 29412

Duplex

Beds: 5
Baths: 2
Size: 1,992 sqft

Est. Rent: $4,780/mo
Est. Cash Flow: -$644/mo
Modeled Cost: $5,424/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $3,969/mo

1757 Skinner Ave Unit A & B, Charleston, SC, 29407

$775,000

1757 Skinner Ave Unit A & B, Charleston, SC, 29407

Duplex

Beds: 5
Baths: 3
Size: 1,920 sqft

Est. Rent: $4,220/mo
Est. Cash Flow: -$957/mo
Modeled Cost: $5,177/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $3,849/mo

12 Nats Ct, Charleston, SC, 29403

$834,990

12 Nats Ct, Charleston, SC, 29403

2-4 Units

Beds: 2
Baths: 2.5
Size: 1,365 sqft

Est. Rent: $4,000/mo
Est. Cash Flow: -$1,469/mo
Modeled Cost: $5,469/mo
Estimate Confidence: Low
Rent Source: Estimated

Est. P&I: $4,147/mo

Isle Plan, Charleston, SC, 29403

$864,990

Isle Plan, Charleston, SC, 29403

2-4 Units

Beds: 2
Baths: 2.5
Size: 1,365 sqft

Est. Rent: $4,000/mo
Est. Cash Flow: -$1,636/mo
Modeled Cost: $5,636/mo
Estimate Confidence: Low
Rent Source: Estimated

Est. P&I: $4,296/mo

19 America St Unit A And B, Charleston, SC, 29403

$1,145,000

19 America St Unit A And B, Charleston, SC, 29403

Duplex

Beds: 6
Baths: 4
Size: 2,000 sqft

Est. Rent: $5,440/mo
Est. Cash Flow: -$2,051/mo
Modeled Cost: $7,491/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $5,687/mo

435 Race St, Charleston, SC, 29403

$999,000

435 Race St, Charleston, SC, 29403

Duplex

Beds: 4
Baths: 2
Size: 1,630 sqft

Est. Rent: $4,380/mo
Est. Cash Flow: -$2,082/mo
Modeled Cost: $6,462/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $4,962/mo

193 Line St Unit A & B, Charleston, SC, 29403

$999,999

193 Line St Unit A & B, Charleston, SC, 29403

Duplex

Beds: 4
Baths: 4
Size: 1,410 sqft

Est. Rent: $4,380/mo
Est. Cash Flow: -$2,088/mo
Modeled Cost: $6,468/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $4,967/mo

123 Smith St, Charleston, SC, 29403

$1,700,000

123 Smith St, Charleston, SC, 29403

Fourplex

Beds: 7
Baths: 4
Size: 3,531 sqft

Est. Rent: $8,570/mo
Est. Cash Flow: -$2,651/mo
Modeled Cost: $11,221/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $8,444/mo

4 Murphy Ct Unit A & B, Charleston, SC, 29403

$1,600,000

4 Murphy Ct Unit A & B, Charleston, SC, 29403

Duplex

Beds: 6
Baths: 3
Size: -- sqft

Est. Rent: $5,440/mo
Est. Cash Flow: -$4,595/mo
Modeled Cost: $10,035/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $7,947/mo

72 Ashe St Unit A&B, Charleston, SC, 29403

$1,699,000

72 Ashe St Unit A&B, Charleston, SC, 29403

Duplex

Beds: 5
Baths: 4
Size: -- sqft

Est. Rent: $4,910/mo
Est. Cash Flow: -$5,573/mo
Modeled Cost: $10,483/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $8,439/mo

111 Cannon St, Charleston, SC, 29403

$3,980,000

111 Cannon St, Charleston, SC, 29403

Duplex

Beds: 7
Baths: 7
Size: -- sqft

Est. Rent: $5,860/mo
Est. Cash Flow: -$17,568/mo
Modeled Cost: $23,428/mo
Estimate Confidence: Medium
Rent Source: Estimated

Est. P&I: $19,768/mo

651 King St, Charleston, SC, 29403

$4,695,000

651 King St, Charleston, SC, 29403

2-4 Units

Beds: 5
Baths: 4.5
Size: 4,253 sqft

Est. Rent: $6,380/mo
Est. Cash Flow: -$21,150/mo
Modeled Cost: $27,530/mo
Estimate Confidence: Low
Rent Source: Estimated

Est. P&I: $23,320/mo

21 Felix St Unit A,B, Charleston, SC, 29403

$1,120,000

21 Felix St Unit A,B, Charleston, SC, 29403

2-4 Units

Beds: --
Baths: --
Size: -- sqft

Est. Rent: N/A
Est. Cash Flow: N/A
Modeled Cost: N/A
Estimate Confidence: N/A
Rent Source: N/A

Est. P&I: $5,563/mo

114 Spring St, Charleston, SC, 29403

$5,300,000

114 Spring St, Charleston, SC, 29403

2-4 Units

Beds: --
Baths: --
Size: -- sqft

Est. Rent: N/A
Est. Cash Flow: N/A
Modeled Cost: N/A
Estimate Confidence: N/A
Rent Source: N/A

Est. P&I: $26,325/mo

272 Coming St Unit A, Charleston, SC, 29403

$850,000

272 Coming St Unit A, Charleston, SC, 29403

Duplex

Beds: --
Baths: --
Size: 1,328 sqft

Est. Rent: N/A
Est. Cash Flow: N/A
Modeled Cost: N/A
Estimate Confidence: N/A
Rent Source: N/A

Est. P&I: $4,222/mo

767 Bermuda St, Charleston, SC, 29412

$630,000

767 Bermuda St, Charleston, SC, 29412

Duplex

Beds: --
Baths: --
Size: -- sqft

Est. Rent: N/A
Est. Cash Flow: N/A
Modeled Cost: N/A
Estimate Confidence: N/A
Rent Source: N/A

Est. P&I: $3,129/mo

140 Spring St Unit Abc, Charleston, SC, 29403

$3,100,000

140 Spring St Unit Abc, Charleston, SC, 29403

Triplex

Beds: --
Baths: --
Size: -- sqft

Est. Rent: N/A
Est. Cash Flow: N/A
Modeled Cost: N/A
Estimate Confidence: N/A
Rent Source: N/A

Est. P&I: $15,397/mo