Downtown Charleston Homes with Mother In Law Suites

Mother-in-Law Suites are not very common in the Historic Downtown Charleston, SC real estate market. Due to the size of the lots on the peninsula and the nature of their first use, mother in law suites in Downtown Charleston are a rare find.. Of course there are opportunities to purchase multi family properties and use the additional space as a mother in law suite if needed. When looking for a home with a mother in law suite in Historic Downtown Charleston, consider checking the zoning for the area, as it is important information to have for insurance purposes. These are all of the homes for sale with Mother-in-Law suites in the Historic Downtown Charleston, SC real estate market.


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28 Photos 210 Line Street Charleston, SC 29403

210 Line Street
Charleston, SC 29403
Westside
Residential

MLS# 26013906 / Active
2 br, 1 ba, 1680 Sqft

Located in the heart of Downtown Charleston, 210 Line Street presents a rare opportunity to own in one of the city's fastest-growing neighborhoods.... 

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$499,000
Provided courtesy of The Pulse Charleston
60 Photos 2 Gadsden Street UNIT B Charleston, SC 29401

2 Gadsden Street UNIT B
Charleston, SC 29401
Harleston Village
Residential

MLS# 26013882 / Active
3 br, 3 ba, 1 Half Bath, 1728 Sqft

Downtown Charleston townhome with no HOA, two deeded off-street parking spaces, and a front door one block from Colonial Lake -- a combination that... 

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$1,665,000
Reduced -$30,000
Provided courtesy of Carolina One Real Estate
51 Photos 402 Sumter UNIT #C Charleston, SC 29403

402 Sumter UNIT #C
Charleston, SC 29403
Westside
Residential

MLS# 26013832 / Active
3 br, 2 ba, 1 Half Bath, 1820 Sqft

Perfectly positioned in the heart of Charleston's vibrant Westside neighborhood, this stylish end-unit townhome offers low-maintenance downtown liv... 

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$949,000
Provided courtesy of Daniel Ravenel Sotheby's International Realty
17 Photos 26 Gordon Street Charleston, SC 29403

26 Gordon Street
Charleston, SC 29403
Wagener Terrace
Residential

MLS# 26013742 / Active
2 br, 1 ba, 990 Sqft

Welcome to this charming home located in the heart of Charleston. This property boasts a spacious interior with beautiful hardwood floors and abund... 

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$785,000
Reduced -$14,999
Provided courtesy of Beycome Brokerage Realty LLC
58 Photos 45 East Bay Street UNIT A Charleston, SC 29401

45 East Bay Street UNIT A
Charleston, SC 29401
South Of Broad
Residential

MLS# 26013627 / Active
2 br, 2 ba, 1722 Sqft

Welcome to 45 East Bay Street Unit A, a rare opportunity to own a piece of Charleston history. This elegant residence is on the first floor of the ... 

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$3,000,000
Provided courtesy of William Means Real Estate, LLC
75 Photos 89 Ashley Avenue Charleston, SC 29401

89 Ashley Avenue
Charleston, SC 29401
Harleston Village
Residential

MLS# 26013579 / Active
5 br, 5 ba, 1 Half Bath, 4298 Sqft

Located in the heart of Harleston Village, 89 Ashley Avenue beautifully blends historic Charleston character with thoughtful modern updates and a l... 

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$6,250,000
Reduced -$700,000
Provided courtesy of The Cassina Group
35 Photos 5 Bull Street Charleston, SC 29401

5 Bull Street
Charleston, SC 29401
Harleston Village
Residential

MLS# 26013531 / Active
5 br, 2 ba, 1 Half Bath, 1632 Sqft

Location, Location, Location! Outstanding turn-key, ready to go, rental property located in the heart of the College of Charleston campus. Five sep... 

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$1,500,000
Provided courtesy of Nicklaus Vance
23 Photos 247 Rutledge Avenue UNIT A Charleston, SC 29403

247 Rutledge Avenue UNIT A
Charleston, SC 29403
Elliotborough
Residential

MLS# 26013511 / Active
4 br, 3 ba, 1396 Sqft

Architectural Luxury Condo Living at its finest for Sale. Located in the heart of Elliotborough. This spacious, modern Condo was custom built & off... 

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$1,249,000
Provided courtesy of Coldwell Banker Comm/Atlantic Int'l
28 Photos 20 Charlestowne Court Charleston, SC 29401

20 Charlestowne Court
Charleston, SC 29401
Harleston Village
Residential

MLS# 26013483 / Active
3 br, 2 ba, 1 Half Bath, 1488 Sqft

Tucked in the quiet pocket of Queen and Logan Streets, 20 Charlestowne Court is a thoughtfully updated townhome in one of Downtown Charleston's mos... 

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$1,400,000
Provided courtesy of AgentOwned Realty Preferred Group
75 Photos 36 Harleston Place Charleston, SC 29401

36 Harleston Place
Charleston, SC 29401
Harleston Place
Residential

MLS# 26013361 / Active
4 br, 3 ba, 1 Half Bath, 2784 Sqft

Perfectly positioned in one of downtown Charleston's most exciting and evolving neighborhoods, this beautifully updated 4-bedroom, 3.5-bath residen... 

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$2,200,000
Provided courtesy of Daniel Ravenel Sotheby's International Realty
40 Photos 34 Rose Lane Charleston, SC 29403

34 Rose Lane
Charleston, SC 29403
Cannonborough-Elliotborough
Residential

MLS# 26013313 / Active
3 br, 3 ba, 1 Half Bath, 1850 Sqft

Built by one of Downtown Charleston's most sought-after contractors, HHM Builders, 34 Rose Lane is a 2022 new construction home that delivers somet... 

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$1,890,000
Reduced -$260,000
Provided courtesy of EXP Realty LLC
33 Photos 279 Coming Street Charleston, SC 29403

279 Coming Street
Charleston, SC 29403
Cannonborough-Elliotborough
Residential

MLS# 26013290 / Active
9 br, 6 ba, 2100 Sqft

Step into a rare piece of Charleston history at 279 Coming Street an 1852-built triplex that effortlessly blends timeless character with strong inv... 

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$1,899,000
Provided courtesy of The Real Estate House International
75 Photos 67 Warren Street Charleston, SC 29403

67 Warren Street
Charleston, SC 29403
Radcliffeborough
Residential

MLS# 26013209 / Active
6 br, 5 ba, 1 Half Bath, 5800 Sqft

This exceptional downtown residence showcases the very best of Charleston living, blending historic architectural details with thoughtful modern up... 

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$4,200,000
Provided courtesy of Maison Real Estate
56 Photos 21 E Battery Charleston, SC 29401

21 E Battery
Charleston, SC 29401
South Of Broad
Residential

MLS# 26012755 / Active
7 br, 6 ba, 4 Half Bath, 13462 Sqft

21 East Battery offers a rare opportunity to steward one of Charleston's most historically significant residences. Known as the Edmondston-Alston H... 

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$14,000,000
Provided courtesy of The Cassina Group
36 Photos 928 Ashley Avenue Charleston, SC 29403

928 Ashley Avenue
Charleston, SC 29403
Wagener Terrace
Residential

MLS# 26012710 / Active
3 br, 3 ba, 2044 Sqft

Welcome to 928 Ashley Avenue, a charming 1935 Cape Cod home in desirable Wagener Terrace in Charleston. This fully renovated home offers a well-des... 

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$1,300,000
Reduced -$99,000
Provided courtesy of Carolina One Real Estate
75 Photos 39 Society Street Charleston, SC 29401

39 Society Street
Charleston, SC 29401
Ansonborough
Residential

MLS# 26012703 / Active
4 br, 4 ba, 1 Half Bath, 3989 Sqft

Welcome to a truly exceptional residence where refined elegance and thoughtful design converge. Ideally located in Ansonborough, one of downtown Ch... 

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$4,995,000
Provided courtesy of Maison Real Estate
37 Photos 18 Iron Forge Alley Charleston, SC 29403

18 Iron Forge Alley
Charleston, SC 29403
Residential

MLS# 26012688 / Active
3 br, 2 ba, 1 Half Bath, 1444 Sqft

FULLY FURNISHED. TURN KEY. Welcome to 18 Iron Forge Alley, a beautifully designed luxury residence located within an exclusive community built on t... 

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$985,000
Reduced -$10,000
Provided courtesy of The Pulse Charleston
37 Photos 2 Gadsden Street UNIT D Charleston, SC 29401

2 Gadsden Street UNIT D
Charleston, SC 29401
Harleston Village
Residential

MLS# 26012484 / Active
3 br, 2 ba, 1 Half Bath, 1404 Sqft

Nestled on a coveted corner lot in the heart of Harleston Village, this refined townhome offers a rare blend of historic charm and elevated modern ... 

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$1,295,000
Reduced -$5,000
Provided courtesy of Healthy Realty LLC
69 Photos 4 Exchange Street Charleston, SC 29401

4 Exchange Street
Charleston, SC 29401
South Of Broad
Residential

MLS# 26012468 / Active
2 br, 2 ba, 1 Half Bath, 2000 Sqft

Perched above Charleston's celebrated Waterfront Park, this extraordinary new construction two bedroom, two and a half bath fee-simple townhouse is... 

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$3,800,000
Provided courtesy of Constant Properties
29 Photos 9 Lapp's Court Charleston, SC 29403

9 Lapp's Court
Charleston, SC 29403
Eastside
Residential

MLS# 26012463 / Active
3 br, 2 ba, 1 Half Bath, 1502 Sqft

NEW CONSTRUCTION- Welcome to 9 Lapps Court, your Dream Home in the Heart of the Eastside!Discover luxury redefined in this stunning NEW 3-bedroom, ... 

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$899,900
Reduced -$25,000
Provided courtesy of Realty ONE Group Coastal
31 Photos 11 Lapp's Court Charleston, SC 29403

11 Lapp's Court
Charleston, SC 29403
Eastside
Residential

MLS# 26012462 / Active
3 br, 2 ba, 1 Half Bath, 1502 Sqft

NEW CONSTRUCTION- Welcome to 11 Lapps Court, your Dream Home in the Heart of the Eastside!Discover luxury redefined in this stunning NEW 3-bedroom,... 

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$899,900
Reduced -$25,000
Provided courtesy of Realty ONE Group Coastal
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Broker Reciprocity The data relating to real estate for sale on this web site comes in part from the Broker ReciprocitySM Program of the Charleston Trident Multiple Listing Service. Real estate listings held by brokerage firms other than EXP Realty LLC are marked with the Broker ReciprocitySM logo or the Broker ReciprocitySM thumbnail logo (a little black house) and detailed information about them includes the name of the listing brokers. Last updated on 06-09-2026 4:28 PM EST . The broker providing these data believes them to be correct, but advises interested parties to confirm them before relying on them in a purchase decision. Copyright 2026 Charleston Trident Multiple Listing Service, Inc. All rights reserved.
Commercial Sale/Lease: Copyright 2026 South Carolina commercial MLS, Inc. All rights reserved. Last updated on 06-09-2026 4:28 PM EST est.

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