275 Sussex Lane, Lake Forest, IL

$5,275,000

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8

Beds

Baths

11,000

Square feet

2.09

Acres

About 275 Sussex Lane

Ralph Lauren print campaigns, features in Architectural Digest, film productions, and even the latest Crate & Barrel holiday catalog all point to one thing: great architecture never goes out of style. And more than a century later, David Adler's "Innisfail I" is every bit as extraordinary today. Set on over two breathtaking acres, this landmark estate is ready now to be experienced through a new 2026 lens. The pool, spa, tennis court, and sauna all are just the side features that bring this magnificent lifestyle home to life, as David Adler designed is country luxury estate with one thing in mind...a destination for all to enjoy. His one primary focus with his interiors was "proportions"- always wanting his rooms to have volume with soaring ceilings but still feel intimate. He finished these spaces with endless sets of French doors bringing the gardens inside, and exquisite original details from intricate millwork to Versailles and herringbone parquet floors. The oversized reception hall immediately sets the tone, opening through 10-foot doorways to the spectacular great room where walls of French doors, handcrafted millwork & grand chandeliers frame the endless terraces & gardens beyond. Sun-drenched entertaining spaces flow effortlessly from the living to the dining room, richly paneled library and sunroom, while the Chef's kitchen, oversized butler's pantry and sunny breakfast room make the house equally suited for everyday living. Upstairs, a beautiful hotel-level wrapped wrought-iron staircase leads to eight bedrooms, including the expansive primary suite with fireplace and private dressing room. The third floor changes the mood completely with a speakeasy-style bar, bedroom and full bath-proof that a house this important can still have a little fun. And then there are the grounds which alone today to duplicate would be over $2m in just design and install. Originally designed by legendary landscape architect Jens Jensen, the estate unfolds across formal gardens, sweeping lawns and mature trees, with a pool, spa and tennis court creating the ultimate private country retreat. Innisfail I has been photographed, published and filmed for generations for a reason. Today estates can be built, not doubt about that, but there is nothing like architecture that can always withstand the test of time. NOW it's time to re-imagine this space with a hue of transitional colors, clean-lined furniture and a revamp from gold to simply white. This is a designer's dream palate as this estate is just waiting to be the next showpiece estate in the North Shore as the pedigree is already in place!

Features of 275 Sussex Lane

MLS® # 12720778
Price $5,275,000
Bedrooms 8
Bathrooms 9.50
Full Baths 8
Half Baths 3
Square Footage 11,000
Acres 2.09
Year Built 1914
Type Residential
Sub-Type Detached Single
Style French Provincial
Status Active

Community Information

Address 275 Sussex Lane
Area Lake Forest
City Lake Forest
County Lake
State IL
Zip Code 60045

Amenities

Parking Spaces 12
Parking Concrete, Garage Door Opener, Yes, Garage Owned, Detached, Driveway, Oversized, Secured, Storage, Owned, Garage
# of Garages 3
Is Waterfront No
Has Pool No

Interior

Interior Features Sauna, Hot Tub, Wet Bar, Built-in Features, Walk-In Closet(s), Bookcases, High Ceilings, Historic/Period Mlwk
Appliances Double Oven, Range, Microwave, Dishwasher, Refrigerator, High End Refrigerator, Bar Fridge, Freezer, Washer, Dryer, Disposal, Trash Compactor, Stainless Steel Appliance(s), Wine Refrigerator, Humidifier
Heating Steam, Radiator(s)
Cooling Small Duct High Velocity, Zoned
Fireplace Yes
# of Fireplaces 4
Fireplaces Wood Burning, More than one
Stories 3 Stories
Has Basement Yes
Basement Partially Finished, Cellar, Exterior Entry, Walk-Out Access

Exterior

Exterior Stucco, Stone
Exterior Features Hot Tub, Lighting
Lot Description Landscaped, Mature Trees, Garden, Level
Roof Slate
Foundation Concrete Perimeter

School Information

District 115
Elementary Everett Elementary School
Middle Deer Path Middle School
High Lake Forest High School

Additional Information

Days on Market 9
Foreclosure No
Short Sale No
RE / Bank Owned No
HOA Fees Freq. Not Applicable

Listing Details

Office@properties Christie's International Real Estate

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Listing information last updated on September 20th, 2026 at 8:37pm CDT.