About 121 W Main St
A distinguished Boise residence rich in history, elegance, & possibilities. As the historic neighborhoods developed, this exceptional property stood at the heart of a growing city. One of Boise’s residential treasures – preserved architectural integrity & significance, backing to the Warm Springs canal on over 1/2-acre and equipped with geothermal heat. Built in 1902 for the family of Boise pioneer & former mayor Peter Sonna, the residence reflects an era when craftsmanship was uncompromising, entertaining was an art & homes were designed to serve generations. Rich wood floors, extraordinary millwork, original pocket doors, handcrafted built-ins, vintage light fixtures, stained glass & beautifully preserved wallpaper tell the story of a home that has been celebrated & cared for by generations. Grand formal rooms, including an elegant dining room, gracious living spaces, library, & veranda capture the warmth and sophistication of another era while offering incredible beauty and function for today's living. The residence provides many possibilities for its next steward -- to continue as an elegant & grand estate, serve as a multigenerational home with two living spaces, be thoughtfully transformed into luxury condos, converted to live/work or to an elegant office. Garage and carport parking. Exceptional grounds, mature landscape, garden space & greenhouse.
Features of 121 W Main St
| MLS® # | 98998414 |
|---|---|
| Price | $1,980,000 |
| Bedrooms | 5 |
| Bathrooms | 4.00 |
| Square Footage | 7,583 |
| Acres | 0.52 |
| Year Built | 1912 |
| Type | Residential |
| Sub-Type | Single Family Residence |
| Status | Active |
Community Information
| Address | 121 W Main St |
|---|---|
| Subdivision | B C O T |
| City | Boise |
| County | Ada |
| State | ID |
| Zip Code | 83702 |
Amenities
| Utilities | Sewer Connected |
|---|---|
| Parking Spaces | 4 |
| Parking | Detached, Carport |
| # of Garages | 2 |
| Is Waterfront | No |
| Waterfront | Irrigation Canal/Ditch |
| Has Pool | No |
Interior
| Interior Features | Bed-Master Main Level, Den/Office, Formal Dining, Family Room, Rec/Bonus, Two Kitchens, Two Master Bedrooms, Walk-In Closet(s), Kitchen Island |
|---|---|
| Appliances | Electric Water Heater, Tank Water Heater, Dishwasher, Microwave, Oven/Range Freestanding, Oven/Range Built-In, Refrigerator, Washer, Dryer |
| Heating | Geothermal |
| Fireplace | Yes |
| Fireplaces | Gas, Insert, Other |
| Stories | Two Story w/ Below Grade |
Exterior
| Lot Description | 1/2 - .99 AC, Garden, Geothermal Water, Irrigation Available, Sidewalks, Irrigation Sprinkler System |
|---|---|
| Roof | Architectural Style |
School Information
| District | Boise School District #1 |
|---|---|
| Elementary | Roosevelt |
| Middle | North Jr |
| High | Boise |
Additional Information
| Date Listed | August 24th, 2026 |
|---|---|
| Days on Market | 3 |
| Foreclosure | No |
| Short Sale | No |
| RE / Bank Owned | No |
Listing Details
| Office | Keller Williams Realty Boise |
|---|---|
| Contact Info | broker@kwboise.com |