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21805 Koa Lane, Star, ID 83669

$8,977,000
  • 21805 Koa Lane, Star, ID 83669 Main Photo

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New to the Market New

Listing Courtesy of: Amherst Madison
Agency Phone: 208-391-2391
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BEDS5 BATHS6.50 SQUARE FEET11,919 MLS#98988268
STATUSNew PROPERTY TYPEResidential - Single Family SCHOOLMiddleton School District #134

Listing Courtesy of: Amherst Madison
Agency Phone: 208-391-2391
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Property Description

A one-of-a-kind opportunity to own one of Idahos most iconic legacy estates. Privately positioned behind the gates of an exclusive waterfront enclave, this extraordinary 17.5-acre property offers over 1,200 feet of Boise River frontage, more than 2,400 feet of private lake frontage, and unmatched privacy bordered by protected state land. Encompassing nearly 12,000 sq ft with 6,000+ sq ft of covered outdoor living and 4,200+ sq ft of garage space, the residence was designed for year-round entertaining and resort-style living. Extensive renovations completed between 2024-2026 introduced designer finishes, custom stonework, and dramatic walls of glass with water views from every room. Amenities include a full indoor regulation basketball court with viewing lounge, professional-grade pickleball court, remodeled upstairs lounge and poker room with second kitchen and statement wine room, state-of-the-art theater with seating for 12, and a wellness retreat featuring a commercial-grade gym with $70k+ in Rogue equipment and sauna. Outdoor living is unparalleled with a heated pool and spa, waterfall-edge features, private lakes, sandy beachfront, new dock, outdoor kitchen with Wolf grill and Traeger smoker, fire features, pergola lounges, fountains, and curated entertaining spaces throughout. An extraordinary blend of luxury, recreation, privacy, and natural beauty.

21805 Koa Lane | MLS# 98988268

This single family home located at 21805 Koa Lane, Star, ID 83669 is currently listed for sale with an asking price of $8,977,000. This property was built in 2015 and has 5 bedrooms with 11919 sq. ft. Koa Lane is located within the Middleton School District #134 school district. Search Star real estate on bvanallen.cbboise.com today.

Property Features

Property Type: Residential - Single Family
Cooling: Central Air
Fireplaces: 3
Garage: 16 car attached
Heating: Forced Air, Passive Solar
Lot Size: 17.12 Acres
Roof Type: Architectural Style
Stories: 2.0
Taxes: $19,693
Year Built: 2015

Amenities

Bath-Master
Bed-Master Main Level
Guest Room
Split Bedroom
Den/Office
Family Room
Great Room
Sauna/Steam Room
Rec/Bonus
Two Kitchens
Two Master Bedrooms
Walk-In Closet(s)
Walk In Shower
Breakfast Bar
Pantry
Kitchen Island
Quartz Counters

Feature Descriptions

Appliances: Dishwasher, Disposal, Double Oven, Microwave, Oven/Range Built-In, Refrigerator, Water Softener Owned, Gas Range
Construction Materials: Frame, Stone, Stucco
Exterior: Frame, Stone, Stucco
Fireplace: Three or More, Gas
Flooring: Hardwood
HOA Fee: 1000/ Annually
HOA Y/N: Yes
Lot: 10 - 19.9 Acres, Dog Run, Garden, Irrigation Available, Views, Borders Public Owned Land, Chickens, Flood Plain, Wooded, Auto Sprinkler System, Drip Sprinkler System, Full Sprinkler System, Irrigation Sprinkler System
Parcel#: R34035010B0
Parking: Attached, RV Access/Parking, Garage (Drive Through Doors), Finished Driveway
Parking Notes: Attached, RV Access/Parking, Garage (Drive Through D
Patio/Porch: Covered Patio/Deck
Patio/Porch: Covered Patio/Deck
Pool: In Ground, Pool, Private
Sewer: Septic Tank
Spa: Yes
Spa: Hot Tub/Spa, Bath
Swimming Pool: Yes
Water: Well
Waterfront: Waterfront, Lake, Pond, River

Local Schools

High School: Middleton
Middle School: Middleton Jr
Elementary School: Mill Creek
School District: Middleton School District #134

Listed By / Shown By

Listed By

Agency Name: Amherst Madison
Agency Phone: 208-391-2391

Shown By

Agent Name: Bob Van Allen
Agent Phone: (208) 863-4856
Agency Title: Coldwell Banker Tomlinson

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Estimated Payment

$ 52,038.74 per month $47,779.36 Principal & Interest $1,641.08 Property Tax $2,618.29 Homeowner's Insurance

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 05/30/2026. The listing information on this page last changed on 05/30/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Sat 05/30/2026 12:18:15 AM EST) or INTERMOUNTAIN MLS (last updated Fri 05/29/2026 11:32:18 PM EST). Real estate listings held by brokerage firms other than Coldwell Banker Tomlinson may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.

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Agent License Information: Idaho DB27351

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