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318 W 46th St, Sea Island, GA, 31561

7beds
9baths
9,771sqft
$10,900,000
$1,116price/sqft
$79,172/moest. monthly cost
$3,166,880/yrincome needed

About This Home

Dock approved. Located within a gated estate on the private island of Sea Island, secured by 24-hour security, “Villa Measured,” Cottage 509 sits on an exceptionally private .86-acre deep-water homesite—one of the largest and most secluded marsh and riverfront parcels on the island. Long, uninterrupted water views unfold in multiple directions, while the estate’s setting and natural buffers create a level of privacy that is increasingly difficult to replicate. The approved dock further enhances the property's lifestyle, offering direct access to the river while preserving the property's quiet, protected character. Designed with intention and restraint, Villa Measured achieves a rare balance—architecturally significant yet comfortably livable, substantial without excess. Inspired by the Musée Rodin in Paris, this Neoclassical residence was constructed on 35–50-foot pilings with load-bearing masonry walls, Ludowici terracotta roof tiles, precast concrete floor panels, stone balusters, and Medici yellow stucco. An aggregate stone and concrete drive leads to the residence and its three-car garage, reinforcing both arrival and functionality. Inside, a terra-cotta tiled foyer framed by limestone columns creates a direct sightline through the home to the marsh and river beyond. Twelve-foot ceilings, Ron Batton custom millwork, copper detailing, and full lightning protection reflect the depth of craftsmanship throughout. Living spaces flow seamlessly indoors and out. Upper and lower loggias overlook a vanishing-edge pool and spa, offering multiple vantage points to enjoy the surrounding landscape. Formal living and dining rooms open to a great room connected to the kitchen and vaulted breakfast room, creating a layout that supports both everyday living and entertaining. Four fireplaces—three interior and one wood-burning fireplace in the loggia—anchor gathering spaces, while two custom fire sculptures by London artist Cathy Burkman add warmth, light, and subtle movement. The south primary wing provides privacy within the home, featuring a dedicated study, dual dressing rooms, an exercise room, and double doors opening to a limestone terrace overlooking the marsh. The second level includes five bedrooms and two limestone terraces separated by the Marsh Room, along with approximately 1,100 square feet of additional guest accommodations accessible from both the main and second floors. A tennis rebound court and a finished floor elevation of 16½ feet complete the estate. With gated access, 24-hour security, a rare .86-acre deep-water setting, an approved dock, and a residence scaled for elegant daily living, Villa Measured stands among the most private and thoughtfully proportioned estates on Sea Island.

Getting Around

1
WalkingCar-Dependent
0
TransitVery Limited Transit
41
BikeSomewhat Bikeable

Schools

5/10
Glynn Middle SchoolGrades 6-810.6 mi
10/10
Glynn AcademyGrades 9-1210.8 mi

Construction

Condition

  • Year built: 2000

Materials

  • Foundation: Block,Other,Pillar/Post/Pier
  • Roof: Tile
  • Construction materials: Block,Concrete,Stucco

Type & Style

  • Home type: SingleFamily
  • Architectural style: European,Other
  • Property subType: Single Family Residence

Interior

Appliances

  • Laundry features: Laundry Room,Laundry Tub,Sink

Bedrooms & Bathrooms

  • Bedrooms: 7
  • Bathrooms: 9
  • Full bathrooms: 7
  • 1/2 bathrooms: 2

Features

  • Beamed Ceilings,Breakfast Bar,Butler's Pantry,Breakfast Area,Crown Molding,Gourmet Kitchen,Kitchen Island,Other,Pull Down Attic Stairs,Painted Woodwork,See Remarks
  • Flooring: Tile
  • Number of fireplaces: 4
  • Fireplace features: Gas Log,Gas Starter,Great Room,Library,Living Room,Other,Wood Burning
  • Fireplace: Yes
  • Attic: Pull Down Stairs

Heating & Cooling

  • Heating features: Central,Electric,Heat Pump,Other,Zoned
  • Cooling features: Central Air,Electric,Heat Pump,Zoned

Interior Area

  • Total interior livable area: 9,771 sqft

Property

Details

  • Parcel number: 0500051
  • Zoning description: Res Single,Residential
  • Special condition: Standard

Features

  • Pool features: Heated,Pool,Association
  • Patio & porch: Covered,Deck,Open,Patio,Porch,Terrace
  • Exterior features: Covered Patio,Deck,Outdoor Shower,Other,Porch,Sprinkler/Irrigation,Landscape Lights,Paved Driveway
  • Has spa: Yes
  • Spa features: Association,Hot Tub
  • Fencing: Wrought Iron,Partial
  • Has view: Yes
  • View description: Marsh View,Other,Residential,Creek/Stream,Water
  • Has water view: Yes
  • Water view: Creek/Stream,Water
  • On waterfront: Yes
  • Waterfront features: Deep Water,Marsh,Water Access,Beach Access,Other

Lot

  • Lot size: 0.85 Acres
  • Features: City Lot,Other,Subdivision,Sprinkler System,Landscaped
  • Lot size dimensions: ,,,

Parking

  • Total spaces: 10
  • Parking features: Covered,Driveway,Garage,Garage Door Opener,Kitchen Level,Other,Paved,Rear/Side/Off Street,On Street,Storage
  • Has garage: Yes
  • Attached garage spaces: 3
  • Covered spaces: 3
  • Has uncovered spaces: Yes

Climate Risk is Financial Risk

Every home has a financial story beyond the listing price. Below, you’ll see the climate risks that could affect this property — and in Bills & Affordability, how those risks may influence repairs, insurance, utilities, and long-term value.

Biggest Threats for This Home

  • Coastal Flooding
    Coastal FloodingRelatively High
  • Hurricane
    HurricaneRelatively High
  • Wildfire
    WildfireModerate
  • Tsunami
    TsunamiInsufficient Data

How This Home’s Risks Compare

Coastal Flooding
Hurricane
Wildfire
Tsunami

FEMA Declared Disasters Across Georgia Counties

Flood
Hurricane
Severe Storm
Straight Line Winds
Tornado
Tropical Storm

Understanding the Costs

Financial advisors generally recommend spending no more than 30% of your gross household income on housing costs. In practice, many households stretch to 35% or beyond — especially in high-cost markets.

Estimated Costs Today

MonthlyAnnual
Mortgage $55,116$661,392
Home Insurance *$1,017$12,204
Property Taxes $22,090$265,080
Electricity $949$11,391
Total$79,172$950,064
*Does not include cost of any FAIR Plan premiums

Income You'd Need if You Spent...

35% on housing$2,714,468/yr
40% on housing$2,375,160/yr
45% on housing$2,111,253/yr

Georgia FAIR Plan Programs

Georgia Underwriting Association

Covered
WildfireWildfire
Add-on available
WindWind
Visit Website →

Georgia Underwriting Association - Coastal

Covered
HailHail
WindWind
Visit Website →
Current Policies
Residential: 8,778Commercial: 638
Total Premiums$16.25M
Total Exposure$2.20B

How Costs Could Change Over Time

Climate risk is quickly impacting all of the major home ownership costs. Adjust the growth rates and percentage of income spent on housing below to see how your housing costs could change over the next 10 years — and what income you'd need to keep up.

Insurance Growth Rate5-year average: 5.1%
5.1%
0%30.0%
Electricity Growth Rate10-year average: 5.5%
5.5%
0%15.0%
Property Taxes Growth Rate2-year average: -3.2%
-3.2%
0%15.0%
Income Spent on Housing
30%
30%45%

Comparing Against the Market

Price Per Sq Ft

$1,116This listing

vs Other Active Listings

Avg $/sqft

ZIP 31561$1,650
Glynn County$345

vs Homes Sold Last Month

Median $/sqft

ZIP 31561$2,384
Glynn County$190

Current Market Trends

Median Price Per Square Foot

The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.

Historicals for This Listing

Zestimate History ($/sqft)

Price History

DateEventPrice
2026-02-02Price change$10,900,000
2025-11-25Listed for sale$11,900,000
2025-11-25Listing removed$11,900,000
2025-10-20Price change$11,900,000
2025-05-14Listed for sale$12,900,000
2025-05-09Listing removed$12,900,000
2024-10-25Listed for sale$12,900,000

For Sale by Agent

AgentSusan Imhoff
BrokerageDeLoach Sotheby's International Realty

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