Primary on Main
Address
1125 Maxwell Ave, Boulder, CO
Price
$ 2,625,250
Property Attributes
- MLS#1067914
- TypeSingle Family
- Listing Status Active
- CountyBOULDER
- CityBoulder
- AreaBoulder
- NeighborhoodMapleton Hill
- Zip80304
- StyleCottage,Includes Rental Unit,Legal Conforming
- Year Built1922
- Taxes$ 14768
- Price$ 2,625,250
- Bedrooms4
- Full Bathrooms4
- Half Bathrooms1
- Sqr Footage3252
- Lot Size0.1 Acres
Data Source:
Information and Real Estate Services (IRES)
Property Description
The Allen Residence. Built in 1922 on Boulder's historic Mapleton Hill, this Craftsman bungalow is a legally conforming duplex, income-ready from day one. The main home features original Douglas Fir floors, 6 panel doors, Craftsman casework, 3 beds, 2 3/4 baths, a covered front porch on tapered brick piers, and a skylit finished attic with charming flex space. Tucked below is a fully finished walk-out garden level apartment, a true second unit with its own private, entrance on the east side and separately metered is ready for a tenant, guests, or a standalone private suite. Out back, a detached 3-car garage (rare on this end of Mapleton Hill) is topped by a 612 SF studio currently with a half bath, convertible to full, with light and bright, living space under current Boulder zoning for a third income stream. RMX-1 zoning supports single-family, duplex, or triplex use across the property's two structures. The finished interior living space totals 3,252 SF, with an additional 374 SF of outdoor living space, 612 SF of parking, with a complimentary 120 SF in the storage shed. All major systems have been updated during current ownership, including electrical, plumbing, hot water heat, windows, and roof. Highly walkable location (87 Walk Score) places the Ideal Market, North Boulder Park, Mount Sanitas, downtown Boulder and Pearl Street, Boulder Creek Path, CU Boulder, and an RTD bus route all within an easy walk or bike ride. The home sits next door to one of Boulder's architecturally acclaimed buildings designed by Charles Haertling, originally known as the Boulder Valley Eye Clinic. This is a rare shot at owning a piece of Boulder history with real, flexible upside.
| Elementary School | Middle School | High School |
|---|---|---|
| Whittier Elementary School | Casey Middle School | Boulder High School |
| Price History | |
|---|---|
| 9/3/2026 | Listed $2,625,250 |
General Features
| Living Area | 3252 |
|---|---|
| Sewer | Public Sewer |
| Heating | Hot Water |
| Cooling | Wall/Window Unit(s) |
| Utilities | Natural Gas Available,Electricity Available |
| Roof | Composition |
| Appliances | Electric Range,Gas Range,Dishwasher,Refrigerator,Washer,Dryer,Microwave,Some Furniture,Disposal,Fire Alarm |
| Zoning | RMX-1 |
| Garage Spaces | 3 |
| Patio/Porch Features | Patio,Deck |
| Architectural Style | Cottage,Includes Rental Unit,Legal Conforming |
| Construction Materials | Frame,Block,Stucco |
| Year Built | 1922 |
| Electric | Xcel |
| Levels | One and One Half |
| Property Subtype | Mixed Use |
| Tax Year | 2025 |
| Parcel Number | R0006468 |
| County | Boulder |
| New Construction | No |
| Property Type | Residential |
| HOA | No |
| Energy Efficient | Windows |
| Subdivision Name | Mapleton Hill |
| Possible Use | Single Family,Multi-Family |
| Other Structures | Storage |
| Full Baths | 3 |
| Status | Active |
| Directions | Broadway and Maxwell (West side of Broadway) |
| High School | Boulder |
| City | Boulder |
| Disclosures | Seller's Property Disclosure,Lead Paint |
| High School District | Boulder Valley Dist RE2 |
| MLS Area | Boulder |
| Elementary School | Whittier |
| Property Attached Y/N | No |
| Tax Annual Amount | 14768 |
| Middle/Junior High School | Casey |
| Standard Status | Active |
| Expected Active Date | 2026-09-04 |
| AttributionContact | 3034492131 |
Interior Features
| Interior Amenities | Eat-in Kitchen,Separate Dining Room,Open Floorplan,Skylights,6-Panel Doors |
|---|---|
| Basement | Full,Partially Finished,Walk-Out Access |
| Flooring | Wood |
| Window Features | Skylight(s) |
| Above Grade Finished Area | 2162 |
| Half Baths | 1 |
| 3/4 Baths | 1 |
| Total Bedrooms | 4 |
| LivingAreaSource | Assessor |
| Total Baths | 5 |
Exterior Features
| Exterior Amenities | Sprinkler System,Balcony |
|---|---|
| Fencing | Fenced |
| Parking Features | Garage Door Opener,Detached |
| Lot Features | Deciduous Trees,Sloping Lot,House Faces South |
| Water Source | City |
| Lot Size Area | 4472 |
| Lot Size Acres | 0.1 |
| Waterfront Y/N | No |
| Builder Model | Bungalow |
| Irrigation Water Rights Y/N | No |
Amenities
- Foreclosure
- Views
- Short Sale
- New Construction
- Adult 55+
- Lease To Own
- No HOA Fees
- Furnished
- Primary On Main
- Air Conditioning
- Seller Finance
- Green
- Fixer Upper
- Horse
- Golf
- Fireplace
- Deck
- Garage
- Basement
- Pool
Property vs Single Family Average in 80304
Price
Taxes
Year Built
Visits
Information deemed reliable but not guaranteed by the MLS. © 2026 Information and Real Estate Services, LLC.
Information source: Information and Real Estate Services, LLC. Provided for limited non-commercial use only under IRES Rules. © Copyright IRES.
The information being provided is for the consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.
The IRES, LLC Data on this
The real estate listing information and related content displayed on this site is provided exclusively 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. This information and related content is deemed reliable but is not guaranteed accurate by elevateMLS.
IDX information is provided exclusively for 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 is deemed reliable but not guaranteed. Copyright © 2026 Vail Multi List, Inc. (VMLS)
The listing broker's offer of compensation is made only to participants of the MLS where the listing is filed.
Pueblo Association of REALTORS®, Inc. 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 consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be
Information should be deemed reliable but not guaranteed, all representations are approximate, and individual verification is recommended. Copyright ©2026 All rights reserved.
