Set on a rare double lot in I'On with sweeping marshfront views, this 5,300+ square foot, 5 bedroom 5 1/2 bath home combines contemporary design with classic Lowcountry architecture. With soaring ceilings, refined finishes, and an easy connection between indoor and outdoor living, this gorgeous home offers both sophistication and comfort in one of Mount Pleasant's most sought-after neighborhoods.The main level showcases an open floor plan designed for entertaining, with expansive windows that fill the home with natural light. A gourmet kitchen anchors the space, featuring custom cabinetry, a generous island, high-end appliances, and a walk-in pantry. Formal and casual dining areas provide flexibility for both gatherings and everyday living. Multiple living spaces including a family room, game room, study, and a FROG offer plenty of room to spread out, while the seamless flow to the wrap-around porches, bluestone patio, and covered outdoor areas invite year-round enjoyment. The private marshfront setting, enhanced by lawn irrigation and meticulous landscaping, makes outdoor living as effortless as it is beautiful. Upstairs, the primary suite serves as a true retreat, complete with panoramic marsh views, vaulted ceilings, a spa-like bath, and walk-in closet. Two additional bedrooms each with its own private bath ensure comfort and privacy for family and guests. There is also a large FROG with an adjoining full bath. Additional features include wide-plank wood flooring, central vacuum, smooth 9'+ ceilings, a metal roof, and a two-car attached garage with ample storage. Designed with both elegance and practicality in mind, this extraordinary home blends timeless craftsmanship with modern luxury. The seamless flow to the wrap-around porches, bluestone patio, and covered outdoor areas invite year-round enjoyment. The private marsh front setting, enhanced by lawn irrigation and meticulous landscaping, and large parking area makes outdoor living as effortless as it is beautiful. One of the few homes in the Low Country that has a stunning walk out lower level, perfect for a 5th bedroom or game room with another full bathroom. This beautiful lower level has a walk out enclosed patio (with a workshop) looking out to the sprawling lot and amazing views, this home is truly a rare find!
Est. $5,993 per month, based on comparable rentals
Sale and tax history for 23 Robert Mills Cir
Sale History
Tax History
Date
Event
Price
Charleston Trident MLS #25022996
Sep 21, 2026
Sold
$3,300,000
$616/sq ft
Sep 5, 2026
Pending
—
Aug 20, 2026
Contingent
—
Aug 17, 2026
Price Changed
$3,899,900
$728/sq ft
Jun 11, 2026
Price Changed
$3,999,900
$747/sq ft
May 21, 2026
Price Changed
$4,399,900
$821/sq ft
May 5, 2026
Listed
$4,499,900
$840/sq ft
Apr 30, 2026
Sold
$3,300,000
$616/sq ft
Oct 30, 2025
Price Changed
$4,499,900
$840/sq ft
Aug 22, 2025
Listed
$4,750,000
$887/sq ft
Charleston Trident MLS #2807261
Feb 5, 2015
Listing Removed
—
Mar 3, 2008
Listed
$2,350,000
$439/sq ft
Charleston Trident MLS #2908367
Apr 26, 2011
Sold
$1,220,000
$228/sq ft
Mar 23, 2009
Listed
$1,300,000
$243/sq ft
BRING OFFER! Short sale possible. Must act quickly * * * If you like to entertain, you'll want to come see this newly finished beauty in the sought-after I'On neighborhood. With tall ceilings, custom wainscoting and beautifully detailed molding, this home has an open floor plan that seamlessly blends with the outdoors via oversized wrap-around rear porches overlooking the marsh. Sit by the outdoor fireplace and enjoy the sounds of nature, or entertain guests while cooking up a feast in the stunning kitchen. With plenty of room for all the cooks in your house, it features top-of-the-line appliances, including an extra wide stainless steel refrigerator and six-burner gas stove with double ovens. Bring the gang downstairs to the ground level family den, pool table area and even a fifthbedroom or study with a fifth full bath. Upstairs is the master with soaring ceilings, a gorgeous soaking tub and separate shower, and two more guest bedrooms, each with their own bath. The oversized room and full bath over the attached garage, currently used as a teenager's dream suite, could be a great home office. With a stylish European design flair, this home also includes beautiful and sturdy Kumaru wood flooring, a large mud room with built-in cubbies, an oversized two-car garage, and a roomy enclosed storage area off the ground level patio. Buyers to pay .15% (.0015 x sales price) transfer fee to the I'On Assembly at closing.
Year
Property tax
Land + Additions
Assessment*
2025
$7,230 (+20.8%)
$730,804 + $1,242,000
$1,972,804
2022
$5,983 (−9.6%)
$635,482 + $1,080,000
$1,715,482
2021
$6,617 (−3.1%)
2020
$6,825 (−1.1%)
$635,482 + $1,080,000
$1,715,482
2018
$6,900 (+1.5%)
2017
$6,795 (+5.4%)
2016
$6,445 (+48.1%)
2013
$4,351
Public record
Public record
Zoning
Beds
4
Baths
6.5
Stories
2
Lot width
—
Lot depth
—
Lot size
6,098 Sq. Ft.
Year renovated
—
Sq. Ft.
5,358
Year built
2008
Style
Single Family Residential
County
Charleston County
APN
5350600778
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Oct 30, 2026.
PD
Planned Development District
The purpose of the PD, Planned Development, District is to: Achieve the objectives of the Comprehensive Plan by allowing flexibility in development that will result in improved design, character, and quality of new mixed use developments that also preserve natural and scenic features of open spaces as a design component; Encourage flexibility in the development of land in order to promote its most appropriate use; Improve the design, character, and quality of new development; Facilitate the provision of streets and utilities and Preserve the natural and scenic features of open areas.; The PD District provisions must exhibit innovative site planning for a mixture of residential and non-residential uses as reflected in the PD District map, which becomes the zoning district map for the property.
Permitted uses
Include but are not limited to:
No uses permitted by right
Property details
Parking
Garage Information
Garage: Yes
Attached Garage: Yes
Parking & Garage Information
Carport Spaces: 0
Parking Features: Attached, 2 Car Garage
Parking Total: 2
Interior
Interior Features
Interior Features: High Ceilings, Kitchen Island, Ceiling - Smooth, Walk-In Closet(s), Central Vacuum, Family, Entrance Foyer, Frog Attached, Office, Separate Dining, Utility
Appliances: Dishwasher, Disposal, Gas Range, Microwave, Refrigerator, Tankless Water Heater
Fireplace Features: Family Room, Gas Log, Two, Wood Burning
MLS Area Major: 42 - Mt Pleasant S of IOP Connector
Community Information
Community Features: Boat Ramp, Clubhouse, Club Membership Available, Dock Facilities, Fitness Center, Pool, Park, Tennis Court(s), Trash, Walk/Jog Trails, Dog Park
Public facts
Beds: 4
Baths: 6.5
Sq. Ft.: 5,358
Stories: 2.0
Lot Size: 6,098 square feet
Style: Single Family Residential
Year Built: 2008
Year Renovated: —
County: Charleston County
APN: 5350600778
Home facts updated by county records on Oct 30, 2026