21805 Koa Lane Star, ID $ 8,977,000
21805 Koa Lane
$ 8,977,000
Recently Listed
Share Save

21805 Koa Lane

Star, ID, 83669
$ 8,977,000
Bedrooms5 Baths7.0 Sq 11,919

Monthly Estimate*

$ 55,273

21805 Koa Lane, Star, ID 83669 - Image 1
21805 Koa Lane, Star, ID 83669 - Image 2
21805 Koa Lane, Star, ID 83669 - Image 3
21805 Koa Lane, Star, ID 83669 - Image 4
21805 Koa Lane, Star, ID 83669 - Image 5
21805 Koa Lane, Star, ID 83669 - Image 6
21805 Koa Lane, Star, ID 83669 - Image 7
21805 Koa Lane, Star, ID 83669 - Image 8
21805 Koa Lane, Star, ID 83669 - Image 9
21805 Koa Lane, Star, ID 83669 - Image 10
21805 Koa Lane, Star, ID 83669 - Image 11
21805 Koa Lane, Star, ID 83669 - Image 12
21805 Koa Lane, Star, ID 83669 - Image 13
21805 Koa Lane, Star, ID 83669 - Image 14
21805 Koa Lane, Star, ID 83669 - Image 15
21805 Koa Lane, Star, ID 83669 - Image 16
21805 Koa Lane, Star, ID 83669 - Image 17
21805 Koa Lane, Star, ID 83669 - Image 18
21805 Koa Lane, Star, ID 83669 - Image 19
21805 Koa Lane, Star, ID 83669 - Image 20
21805 Koa Lane, Star, ID 83669 - Image 21
21805 Koa Lane, Star, ID 83669 - Image 22
21805 Koa Lane, Star, ID 83669 - Image 23
21805 Koa Lane, Star, ID 83669 - Image 24
21805 Koa Lane, Star, ID 83669 - Image 25
21805 Koa Lane, Star, ID 83669 - Image 26
21805 Koa Lane, Star, ID 83669 - Image 27
21805 Koa Lane, Star, ID 83669 - Image 28
21805 Koa Lane, Star, ID 83669 - Image 29
21805 Koa Lane, Star, ID 83669 - Image 30
21805 Koa Lane, Star, ID 83669 - Image 31
21805 Koa Lane, Star, ID 83669 - Image 32
21805 Koa Lane, Star, ID 83669 - Image 33
21805 Koa Lane, Star, ID 83669 - Image 34
21805 Koa Lane, Star, ID 83669 - Image 35
21805 Koa Lane, Star, ID 83669 - Image 36
21805 Koa Lane, Star, ID 83669 - Image 37
21805 Koa Lane, Star, ID 83669 - Image 38
21805 Koa Lane, Star, ID 83669 - Image 39
21805 Koa Lane, Star, ID 83669 - Image 40
21805 Koa Lane, Star, ID 83669 - Image 41
21805 Koa Lane, Star, ID 83669 - Image 42
21805 Koa Lane, Star, ID 83669 - Image 43
21805 Koa Lane, Star, ID 83669 - Image 44
21805 Koa Lane, Star, ID 83669 - Image 45
21805 Koa Lane, Star, ID 83669 - Image 46
21805 Koa Lane, Star, ID 83669 - Image 47
21805 Koa Lane, Star, ID 83669 - Image 48
21805 Koa Lane, Star, ID 83669 - Image 49
21805 Koa Lane, Star, ID 83669 - Image 50

Single Family Home for sale in Star, ID

for $8,977,000 with 5 bedrooms and 7 full baths. This 11,919 square foot home was built in 2015 on a lot size of 17.12.

A one-of-a-kind opportunity to own one of Idaho’s 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.

See more

Single Family Active

Price

$ 8,977,000

Bedrooms

5

Full Bath

7

Property Type

Single Family

Taxes

$ 19,693

Style

Lot Size

17.12

Year Built

2015

Town/City

Star

County/Region

Ada

MLS | Web ID

98988268

Features
General
Sewer Septic Tank
Heating Forced Air
Cooling Central Air
Roof Architectural Style
Appliances Dishwasher
HOA Fee 1000
Garage Spaces 16
Patio/Porch Features Covered Patio/Deck
Pool Features In Ground
Security Features Alarm
Construction Materials Frame
Year Built 2015
Levels Two
Property Subtype Single Family w/ Acreage
Tax Year 2025
Current Use Single Family
Ownership Fee Simple
Waterfront Features Waterfront
Assoc Fee Paid Per Annually
County Canyon
Property Type Residential
HOA true
Attached Garage true
Subdivision Name 0 Not Applicable
Garage Y/N true
Status Active
Directions Use Google Maps to get to the location address. From Downtown Star Continue West on Highway 44 S on Bent Ln SE on Castagnola Ln Then S on Chateau Ct.
High School Middleton
City Star
High School District Middleton School District #134
Lot Size Units Acres
Lot Size Square Feet 745747.2
Carport Y/N false
Spa Features Hot Tub/Spa
Elementary School Mill Creek
Land Lease Y/N false
Tax Annual Amount 19693.58
Middle/Junior High School Middleton Jr
Building Area Units Square Feet
Primary Bedroom Level Main
Living Area Units Square Feet
Standard Status Active
Middle/Junior School District Middleton School District #134
Elementary School District Middleton School District #134
Legal Description 13-4N-2W NE TX 22615 IN SENE & GOVT LT 1 & NESE
LeasableAreaUnits Square Feet
Freehold IDX
See more
Interior
Interior Amenities Bath-Master
Flooring Hardwood
Fireplace Features Three or More
Kitchen Level Main
Air Conditioning Y/N true
Heating Y/N true
Fireplace Y/N true
Above Grade Finished Area 11919
Total Bedrooms 5
Below Grade Finished Area 0
Living Room Level Main
Main Level Bedrooms 5
Main Level Bathrooms 6
Below Grade Finished Area Unit Type Square Feet
Below Grade Finished Area Source Plans
Above Grade Finished Area Source Plans
Above Grade Finished Area Unit Type Square Feet
Total Baths 7
Primary on Main 195
Second Bedroom Length 13
Second Bedroom Width 15
Bedroom 3 Area 256
Bedroom 3 Length 16
Bedroom 3 Width 16
Bedroom 4 Area 256
Bedroom 4 Length 16
Bedroom 4 Width 16
Family Room Area 720
Family Room Length 24
Living Room Area 360
Living Room Length 18
Living Room Width 20
Primary Bedroom Area 368
Primary Bedroom Length 16
Primary Bedroom Width 23
Family Room Width 30
Family Room Level Main
Bedroom 5 Width 16
Bedroom 5 Level Main
Bedroom 5 Length 16
Bedroom 5 Area 256
Bedroom 4 Level Main
Bedroom 3 Level Main
Second Bedroom Level Main
Power Production Type Photovoltaics
See more
Exterior
Parking Features Attached
Lot Features 10 - 19.9 Acres
Water Source Well
Total Parking 16
Lot Size Area 17.12
Spa true
Building Area Total 11919
Lot Size Acres 17.12
Waterfront Y/N true
Covered Spaces 16
See more
* Excluded Features
List By
Matt Bauscher

Listing Agent

Amherst Madison

Broker

matt@bauscherrealestate.com

Email

Affordability Calculator

$56,914
Per Month
97%
3%
0%
Monthly Principal & Interest
$55,273
Monthly Property Taxes
$1,641
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save

Discover how much house you can afford

Your dream home may be within reach.

Learn More about how to save

The time to sell is now
THE TIME TO SELL IS NOW! What's my home worth?
Nearby
397669 Elementary School
397799 Middle School
Middleton High School High School
Pricing History
DatePricePrice ChangeDescription
5/29/2026$8,977,000 Listed Price

Map


See all

21805 Koa Lane, Star, ID, 83669 is a Single Family Home for sale at $8,977,000 with 11,919 sqft and a lot size of 17.12. 21805 Koa Lane has 5 bedrooms, 7.0 baths, and was built in 2015. The property's zip code is 83669 which is in Star, ID