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Designed by renowned architect Gary Nance, the custom estate was created for sophisticated everyday living and grand-scale entertaining, while its scale and configuration offer uncommon flexibility for residential or commercial use, including a private estate, bed and breakfast or multi-family concept, subject to applicable zoning and approvals. The interiors feature 6 bedrooms, 10 full baths, and 5 half baths, along with 3 kitchens, 2 theaters, a commercial-grade wet bar, billiards and gaming areas, a private bowling alley and generously sized ensuite bedrooms. The thoughtful layout accommodates multigenerational living, extended family and guests, while also lending itself to a variety of potential uses. Waterfront living takes center stage outdoors, where a spacious deck with docking capabilities creates a natural extension of the property. Spend summer days on the lake, gather for sunset dinners overlooking the water or enjoy the privacy and natural beauty of the setting. A 5-car garage provides abundant space for vehicles, boats and recreational equipment. The opportunity extends beyond the existing estate. Buyers may acquire either or both adjoining 2.5-acre parcels, creating the potential for an expansive private compound or further development. Promontory combines privacy and natural beauty with convenient access to Downtown Zionsville, top-rated schools, dining, shopping and everyday amenities. Buyers may also choose membership at either Holliday Farms or Chatham Hills, 2 premier private club communities offering additional opportunities for golf, recreation and connection. For those seeking a property with private lake access, expansive acreage and extraordinary versatility, 9825 Windy Hills Drive offers a rare combination of scale, setting and potential. Whether envisioned as a private residence, commercial venture, bed and breakfast or multi-family property, the possibilities extend well beyond the traditional estate.
Property Type(s):
Single Family
| Last Updated | 10/9/2026 | Tract | Promontory |
|---|---|---|---|
| Year Built | 2002 | Community | 604 - Boone - Union |
| Garage Spaces | 4.0 | County | Boone |
SCHOOLS
| Elementary School | Union Elementary School |
|---|---|
| Jr. High School | Zionsville Middle School |
| High School | Zionsville Community High School |
Additional Details
| AIR | Central Air |
|---|---|
| AIR CONDITIONING | Yes |
| APPLIANCES | Dishwasher, Disposal, Double Oven, Dryer, Gas Cooktop, Microwave, Oven, Refrigerator, Washer |
| AREA | 604 - Boone - Union |
| CONSTRUCTION | Brick |
| EXTERIOR | Balcony, Fire Pit |
| FIREPLACE | Yes |
| GARAGE | Yes |
| HEAT | Forced Air |
| HOA DUES | 1450|Annually |
| INTERIOR | Breakfast Bar, Built-in Features, Elevator, High Ceilings, In-Law Floorplan, Kitchen Island, Vaulted Ceiling(s), Walk-in Closet(s), Wet Bar |
| LOT | 4.55 acre(s) |
| LOT DESCRIPTION | Waterfront |
| PARKING | Garage Door Opener, Attached, Heated Garage, Tandem |
| STORIES | 3+ |
| STYLE | Farmhouse |
| SUBDIVISION | Promontory |
| VIEW | Yes |
| VIEW DESCRIPTION | Lake |
| WATER | Private |
| WATERFRONT | Yes |
| WATERFRONT DESCRIPTION | Lake Privileges, Lake Front |
Location
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Listed with The Agency Indy
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© 2026 Metropolitan Indianapolis Board of REALTORS®
© 2026 Metropolitan Indianapolis Board of REALTORS®
This IDX solution is (c) Diverse Solutions 2026.

