Recently Listed New ConstructionOpen House 5/3 12pm - 4pm
858 3rd Avenue
Longmont, CO, 80501 $ 1,600,000
Bedrooms3 Baths2.1 Sq 5,371 Monthly Estimate*
$ 9,851
for $1,600,000 with 3 bedrooms and 2 full baths, 1 half bath. This 5,371 square foot home was built in 1903 on a lot size of 0.5.
Timeless Elegance in the Heart of Old Town, one of Longmont's most distinguished historic residences, The Emmons-Adler House. A rare opportunity in turn-of-the-century architecture, bold, symmetrical, and commanding on its half-acre lot along coveted 3rd Avenue. The crown jewel of the exterior is the sweeping wrap-around porch, perfectly proportioned to match the home's stately presence. Whether you're sipping morning coffee as the neighborhood stirs to life or hosting friends on a warm Colorado evening, this porch is the kind that makes passersby stop and stare. It is quintessential Old Town living at its finest. Inside, over 5,000 square feet of thoughtfully arranged living space unfolds across three generous bedrooms, three bathrooms, and a spectacular bonus third-floor great room. Throughout the home, soaring leaded-glass windows cast ever-changing light across richly appointed rooms, their artistry a daily reminder of the era's uncompromising craftsmanship. Deep woodwork, gracious proportions, and the quiet confidence of a home that has stood beautifully for over a century complete an interior that no new construction can replicate. The historic designation confers a deep sense of pride of ownership and places this property among a rare and celebrated collection of Longmont's most treasured homes. The grounds are nothing short of exceptional. The rare half-acre lot is lushly private and serene - a true urban sanctuary in the heart of Old Town. A charming garden house anchors the backyard, perfect as a studio, workshop, or haven for the dedicated gardener. The detached two-car garage provides ample storage and parking, while the drive-through driveway adds a gracious, practical elegance. The private garden area is a hidden gem. Mature trees and beautiful outdoor spaces complete a setting that is as livable as the home itself. Stroll to restaurants, coffee houses, breweries, shops, local events, and all Downtown has to offer. Love Where You Live
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Open House
5/3/2026 12:00 PM - 4:00 PM
858 3rd Avenue Longmont, CO
* Some states or local ordinances may prohibit Open Houses at this time, please confirm with your Weichert agent or local rep to confirm
FeaturesInteriorInterior Amenities Breakfast Bar Eat-in Kitchen Five Piece Bath High Ceilings Walk-In Closet(s)
Basement Partial Walk-Out Access
Flooring Carpet Linoleum Tile Wood
Total Fireplaces 1
Fireplace Features Family Room
Basement (Y/N) Y
Window Features Bay Window(s) Window Coverings
Above Grade Finished Area 3351
Half Baths 1
1/4 Baths 0
3/4 Baths 1
Total Bedrooms 3
Below Grade Finished Area 704
Main Level Bedrooms 0
Main Level Bathrooms 1
Total Baths 3
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GeneralSewer Public Sewer
Heating Hot Water
Cooling None
Utilities Electricity Connected Natural Gas Connected
Possession Closing/DOD
Roof Spanish Tile
Appliances Dishwasher Double Oven Microwave Oven Range Refrigerator
Garage Spaces 2
Patio/Porch Features Covered Deck Front Porch Wrap Around
Construction Materials Block Brick
Exclusions Staging items
Year Built 1903
View Mountain(s)
Levels Three Or More
Property Subtype Single Family Residence
Tax Year 2025
Ownership Estate
County Boulder
Property Type Residential
HOA N
Attached Garage N
Subdivision Name Old Town
Facing Direction South
Full Baths 1
Status Active
Directions From Main Street 3rd Avenue west to the property on the corner.
High School Longmont
City Longmont
Senior Community Y/N N
High School District St. Vrain Valley RE-1J
Lot Size Units Square Feet
Lot Size Square Feet 21636
Carport Spaces 0
Listing Terms Cash Conventional
Elementary School Central
Tax Annual Amount 8270
Middle/Junior High School Westview
Virtual Tour https://rare-aire-media.aryeo.com/videos/019dd1ed-7351-72d2-b20d-8da4745377dd?v=466
Structure Type House
Standard Status Active
Occupancy Type Owner
Middle/Junior School District St. Vrain Valley RE-1J
Elementary School District St. Vrain Valley RE-1J
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ExteriorExterior Amenities Balcony Private Yard
Vegetation Pine
Fencing Partial
Parking Features Oversized
Lot Features Corner Lot Historical District Sprinklers In Front Sprinklers In Rear
Water Source Public
Total Parking 2
Lot Size Area 21636
Building Area Total 5371
Lot Size Acres 0.5
Road Surface Type Paved
Road Frontage Type Public
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* Excluded FeaturesAffordability Calculator
- Monthly Principal & Interest
- $9,851
- Monthly Property Taxes
- $689
- 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 NearbySingle family listings in Longmont, CO
Average List Price $1,142,091
Percent of Sale Price 29%
About Longmont, CO 95,205 Population
31% Since 2002
$ 64,602 Median Income
39.12 Median Age
30% Households with Children
Trends Information provided by ATTOM Data Solutions.
1639117 Elementary School
910918 Middle School
Longmont High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 4/30/2026 | $1,600,000 | | Listed Price |