3925 N 3650 W, Mackay, ID, 83251
About This Home
Nestled along the Big Lost River in Idaho's spectacular Lost River Valley, this extraordinary 7.47-acre riverfront estate offers a rare combination of luxury, privacy, and self-sufficient mountain living. The 4,822 sq. ft. custom residence features 6 bedrooms and 4 baths, soaring ceilings, expansive gabled windows, and panoramic views of the Lost River Range. At the heart of the home stands a remarkable handcrafted Temp-Cast masonry fireplace spanning multiple levels, creating both an architectural centerpiece and radiant warmth throughout the residence. Large view windows frame the surrounding mountains and bring the beauty of the valley indoors. The property is beautifully landscaped with mature trees, lush lawns, and approximately 400 feet of Big Lost River frontage, providing exceptional wildlife viewing, fishing access, and year-round enjoyment. Improvements include a 2,400 sq. ft. insulated and heated RV/shop building with oversized doors, a 20' x 100' greenhouse, irrigation systems, and abundant space for recreation, equipment, animals, or future expansion. A truly unique riverfront retreat offering luxury, functionality, and breathtaking natural beauty in one of Idaho's most scenic mountain valleys. Rarely does a property of this caliber become available
Getting Around
Car-Dependent
Very Limited Transit
Somewhat BikeableSchools
Construction
Condition
- Year built: 1985
Materials
- Foundation: Concrete Perimeter,Pressure Treated Wood
- Roof: Metal
- Construction materials: Frame,Primary Exterior Material: Metal Siding,Primary Exterior Material: Vinyl Siding
Type & Style
- Home type: SingleFamily
- Property subType: Single Family Residence
Interior
Appliances
- Appliances included: Dishwasher,Dryer,Disposal,Microwave,Exhaust Fan,Vented Exhaust Fan,Refrigerator,Washer,Plumbed For Water Softener
- Laundry features: Upper Level,Laundry Room
Basement
- Area: 0
Basement
- Basement: Crawl Space
Bedrooms & Bathrooms
- Bedrooms: 6
- Bathrooms: 4
- Full bathrooms: 4
- 1/2 bathrooms: 1
- Main level bathrooms: 2
- Main level bedrooms: 4
Dining Room
- Level: Upper
Family Room
- Level: Main
Features
- Ceiling Fan(s),New Paint-Partial,Plumbed For Central Vac,Vaulted Ceiling(s),Walk-In Closet(s),Central Vacuum,Den/Study,Formal Dining Room,Game Room,Main Floor Family Room,Master Bath,Mud Room,Office,Pantry,Storage,Workshop,Theater Room
- Flooring: Carpet,Concrete,Hardwood,Laminate,New Floor Coverings-Partial
- Number of fireplaces: 1
- Fireplace features: 1,Pellet Stove
- Fireplace: Yes
- Attic: Storage
- Finished area below ground: 0
- Finished area above ground: 4,822
Heating & Cooling
- Heating features: Electric,Baseboard,Cadet Style,See Remarks
- Cooling features: None
Interior Area
- Total structure area: 4,822
- Total interior livable area: 4,822 sqft
Kitchen
- Level: Upper
Living Room
- Level: Upper
Office
- Level: Main,Upper
Property
Details
- Parcel number: RP06N25E13600A
- Zoning description: Custer-Residential
- Other equipment: Intercom
- Exclusions: Hot Tub,Sauna,Freezers
Features
- Levels: Two
- Stories: 2
- Patio & porch: 1,Covered
- Exterior features: Barbecue
- Has spa: Yes
- Spa features: Bath
- Fencing: Chain Link,Partial,Other
- Has view: Yes
- View description: Mountain(s),Valley,Water
- Has water view: Yes
- Water view: Water
- On waterfront: Yes
- Waterfront features: River Front,Waterfront,Pond
Lot
- Lot size: 7.47 Acres
- Features: Livestock Permitted,Level,Rural,Secluded,Wooded,Low Traffic,Near Stream/River,Established Lawn,Many Trees,Flower Beds,Garden,Sprinkler-Auto,Sprinkler System Full
Parking
- Total spaces: 6
- Parking features: 2 Stalls,4 Stalls,Attached,Workshop in Garage,Garage Door Opener,Gravel,RV Access/Parking
- Has garage: Yes
- Attached garage spaces: 6
- Covered spaces: 6
- 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
- Inland Flooding
- Landslide
- Lightning
- Winter Weather
- Avalanche
- Cold Wave
- Earthquake
- Strong Wind
- Wildfire
- Heat Wave
How This Home’s Risks Compare
FEMA Declared Disasters in Custer County and Idaho
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
| Monthly | Annual | |
|---|---|---|
| Mortgage | $7,053 | $84,636 |
| Home Insurance | $407 | $4,884 |
| Property Taxes | $488 | $5,856 |
| Electricity | $294 | $3,537 |
| Total | $8,242 | $98,904 |
Income You'd Need if You Spent...
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.
Comparing Against the Market
Price Per Sq Ft
vs Other Active Listings
Avg $/sqft
vs Homes Sold Last Month
Median $/sqft
Current Market Trends
Median Price Per Square Foot
The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.
Historicals for This Listing
Zestimate History ($/sqft)
Price History
| Date | Event | Price |
|---|---|---|
| 2026-06-10 | Listed for sale | $1,395,000 |
View on Zillow