1125 Maxwell Ave, Boulder, CO 80304
Property image
Property image
FOR SALE

$2,625,250

  • 4 Beds
  • 4.5 Baths
  • 3,252 sqft

1125 Maxwell Ave, Boulder, CO 80304

Mapleton Hill
Est. Mortgage $14,772/mo*
Get Pre-Qualified
We estimate this home will sell faster than 84% nearby.

Home Highlights

Single-Family Home
Built in 1922
$807/sqft
Garage

Local Information

  • Map ViewExplore the area around 1125 Maxwell Ave.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

About this House

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.
Last check for updates: about 2 hours ago
Listing courtesy of Joe Bennell, (303) 449-2131
The Colorado Group
Source: IRES as distributed by MLS GRID, MLS#1067914
Also Listed on REcolorado as distributed by MLS GRID, REcolorado as distributed by MLS GRID, IRES as distributed by MLS GRID.
We estimate this home will sell faster than 84% nearby.

Home Details for 1125 Maxwell Ave

Interior Features

Interior Details
Basement: Full,Partially Finished,Walk-Out AccessNumber of Rooms: 8Types of Rooms: Primary Bedroom, Bedroom 2, Bedroom 3, Bedroom 4, Dining Room, Kitchen, Living Room, Study
Beds & Baths
Number of Bedrooms: 4Number of Bathrooms: 5Number of Bathrooms (full): 3Number of Bathrooms (three quarters): 1Number of Bathrooms (half): 1Number of Bathrooms (main level): 1
Dimensions and Layout
Living Area: 3252 Square Feet
Appliances & Utilities
Utilities: Natural Gas Available, Electricity AvailableAppliances: Electric Range, Gas Range, Dishwasher, Refrigerator, Washer, Dryer, Microwave, DisposalDishwasherDisposalDryerMicrowaveRefrigeratorWasher
Heating & Cooling
Heating: Hot WaterHas CoolingAir Conditioning: Wall/Window Unit(s)Has HeatingHeating Fuel: Hot Water
Gas & Electric
Electric: XcelGas: XcelHas Electric on Property
Windows, Doors, Floors & Walls
Window: Skylight(s)Door: 6-Panel DoorsFlooring: Wood
Levels, Entrance, & Accessibility
Stories: 1Levels: One and One HalfFloors: Wood
View
No View
Security
Security: Fire Alarm

Exterior Features

Exterior Home Features
Roof: CompositionPatio / Porch: Patio, DeckFencing: FencedOther Structures: StorageExterior: Sprinkler System, BalconySprinkler System
Parking & Garage
Number of Garage Spaces: 3Number of Covered Spaces: 3Other Parking: DetachedNo CarportHas a GarageNo Attached GarageParking Spaces: 3Parking: Garage Door Opener,Detached
Frontage
Not on Waterfront
Water & Sewer
Sewer: Public Sewer
Farm & Range
Does Not Include Irrigation Water Rights
Finished Area
Finished Area (above surface): 2162 Square Feet

Days on Market

Days on Market: 6

Property Information

Year Built
Year Built: 1922
Property Type / Style
Property Type: ResidentialProperty Subtype: Mixed UseArchitecture: Cottage,Includes Rental Unit,Legal Conforming
Building
Construction Materials: Frame, Block, StuccoNot a New ConstructionNot Attached Property
Property Information
Usage of Home: Single Family, Multi-FamilyParcel Number: R0006468

Price & Status

Price
List Price: $2,625,250Price Per Sqft: $807

Active Status

MLS Status: Active

Location

Direction & Address
City: BoulderCommunity: Mapleton Hill
School Information
Elementary School: WhittierJr High / Middle School: CaseyHigh School: BoulderHigh School District: Boulder Valley Dist RE2

Agent Information

Listing Agent
Listing ID: 1067914

Building

Building Details
Builder Model: Bungalow
Building Area
Building Area: 2162 Square Feet

HOA

No HOA

Lot Information

Lot Area: 4472 sqft

Listing Info

Special Conditions: Licensed Owner

Offer

Listing Terms: Cash, Conventional

Energy

Energy Efficiency Features: Windows

Rental Terms, Policies & Fees

Are Units Furnished: Varies By Unit

Miscellaneous

BasementMls Number: 1067914Attribution Contact: 303-449-2131Above Grade Unfinished Area: 2162Activation Date: Fri Sep 04 2026Showing Service Name: ShowingTime

Around this home

Neighborhood Overview

Mapleton Hill
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Mapleton Hill

At least 9 Trulia users voted on each feature.

  • 100 % Say it's walkable to restaurants

  • 100 % Say there are sidewalks

  • 95 % Say it's dog friendly

  • 90 % Say it's walkable to grocery stores

  • 84 % Say yards are well-kept

  • 82 % Say people would walk alone at night

  • 78 % Say kids play outside

  • 75 % Say there's wildlife

  • 67 % Say there's holiday spirit

  • 67 % Say parking is easy

  • 67 % Say there are community events

  • 64 % Say it's quiet

  • 63 % Say they plan to stay for at least 5 years

  • 57 % Say neighbors are friendly

  • 56 % Say streets are well-lit

  • 29 % Say car is needed

Sourced by Trulia users. Learn more about our methodology.
  • Trulia User
    "I bike to campus in 20 minutes and it’s great besides the traffic and gas fumes from cars which sucks transit is very good here, bus stops all up and down Broadway."
    0
    Flag
  • Trulia User
    "It seems as if most people own dogs . Very dog friendly . Dogs always seem well trained . Dogs also seem very friendly . "
    1
    Flag
  • Liz J.
    "There are lots of dog walkers and runners. Many wet dogs show that there is good swimming in the ditches. "
    1
    Flag
  • Taraarnolds
    "Loads of people out walking dogs and many folks stopping to chat too. You'll sometimes hear a dog or two barking, but never for long."
    0
    Flag
  • Thomas
    "I've lived in the Mapleton Hill neighborhood for 5 years. It is so convenient and quaint; my kids just love having the freedom to play with all the other kids here."
    1
    Flag
  • Maxclauson c. n.
    "Historic neighborhood that is close to town but secluded enough to be calm and quiet. Filled with interesting new arrivals and long time residents. "
    3
    Flag
  • Noah B.
    "Quiet and calm neighborhood, close to everything that makes Boulder great. Easy access to Pearl, Sanitas, Wonderland, and Ideal Market area. "
    1
    Flag
  • amazingdairy
    "West Pearl is truly a neighborhood unto itself, with a variety of shops & cafes and easy access to trails. Start your day with some tea and scones at Spruce Confections, enjoy browsing various antique stores and Two Hand Paperie, then select a bottle of wine at West End Wine Shop. Lolita's is conveniently located across the street to pick up last minute groceries for dinner, or you can enjoy a slice at Nick and Willy's and have some confectionary treats at Piece, Love & Chocolate. Settlers' Park is just down the street, as well as the trail heads to Red Rocks & Sanitas, and the Boulder Bike Path. When you live here, everything that makes Boulder so wonderful is only steps away!"
    2
    Flag

Market trends in Boulder

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$897K
$10.37KMoM
Sale-to-List Price
98.4%
0.1%MoM
Price per sq ft
$499
$4MoM
Available listings
760
19MoM

Home Value

Trulia Estimate
$2.46M
Since last month
Increased$371K (+17.7%)
Since last year
Increased$339K (+16%)
Since last sale
Increased$2M (+837.4%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +63% in the last 10 years
MonthEstimated value
2026
September 2026$2.46M
August 2026$2.08M
July 2026$2.09M
June 2026$2.15M
May 2026$2.17M
April 2026$2.19M
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
1521 Mapleton Ave, Boulder, CO
0.28
Single-Family Home
$1,900,000
11/10/25
3
4.5
3,064
804 Dewey Ave, Boulder, CO
0.26
Single-Family Home
$1,675,000
06/18/26
3
3.5
2,224
1020 Portland Pl, Boulder, CO
0.15
Single-Family Home
$1,544,000
06/12/26
4
3
2,484
2651 9th St, Boulder, CO
0.31
Single-Family Home
$960,000
04/28/26
4
3
1,968
1450 High St, Boulder, CO
0.24
Single-Family Home
$3,950,000
03/06/26
5
4
3,826
2236 17th St, Boulder, CO
0.42
Single-Family Home
$2,400,000
07/02/26
3
3.5
3,272
1013 Mapleton Ave, Boulder, CO
0.10
Single-Family Home
$3,295,000
08/27/26
4
3
2,463
2449 5th St, Boulder, CO
0.44
Single-Family Home
$2,651,475
05/01/26
5
4
3,549
625 Concord Ave, Boulder, CO
0.31
Single-Family Home
$2,700,000
02/25/26
4
3
4,640

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
1134 Maxwell Ave, Boulder, CO 80304
0.02
$1,508,000
6
4
2,385
Recently Sold
1111 Maxwell Ave #108, Boulder, CO 80304
0.03
$401,300
1
1
612
Off Market
1203 High St, Boulder, CO 80304
0.04
$1,486,500
2
2
2,154
Off Market
2439 Broadway Street, Boulder, CO 80304
0.05
$1,695,000
4
1
1,991
For Sale
1111 Maxwell Avenue #212, Boulder, CO 80304
0.04
$419,000
2
1
816
For Sale
1111 Maxwell Ave #126, Boulder, CO 80304
0.04
$355,300
1
1
520
Off Market
1111 Maxwell Avenue #219, Boulder, CO 80304
0.04
$461,800
2
1
800
Off Market
1111 Maxwell Ave #235, Boulder, CO 80304
0.04
$458,800
2
1
800
Off Market
2400 Broadway St #1, Boulder, CO 80304
0.06
$1,712,400
2
2.5
1,708
Off Market
1111 Maxwell Ave #232, Boulder, CO 80304
0.05
$395,000
2
1
816
Recently Sold
1111 Maxwell Ave #226, Boulder, CO 80304
0.05
$415,000
2
1
816
For Sale

Price and Tax history

DateEventPrice
Sep 4, 2026
Source: IRES as distributed by MLS GRID #1067914
Listed For Sale
$2,625,250
Sep 4, 2023
Source: Zillow Rentals
ListingRemoved
Feb 10, 2023
Source: Zillow Rentals
Listed For Rent
$4,275
Jan 28, 2023
Source: Zillow Rentals
ListingRemoved
Dec 31, 2022
Source: Zillow Rentals
Listed For Rent
$4,275

LGBTQ Local Legal Protections

Joe Bennell, The Colorado Group
Agent Phone: (303) 449-2131
Based on information submitted to the MLS GRID as of 2026-09-10 10:03:06 PDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. Click here for more information

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Frequently asked questions about 1125 Maxwell Ave

  • What is the estimated monthly payment for 1125 Maxwell Ave?
    Based on a $2,625,250 list price with 20% down at today's rates, the estimated monthly payment for 1125 Maxwell Ave in Boulder, CO is approximately $15,257 (about $14,023 principal & interest, $1,159 property taxes, and $75 homeowner's insurance). This is an estimate. Actual payment depends on your loan terms.
  • How does the list price for 1125 Maxwell Ave compare to homes in Boulder?
    1125 Maxwell Ave in Boulder, CO is listed at $2,625,250, about 193% above the $897K median sale price in Boulder.
  • What do residents say about the Mapleton Hill neighborhood?
    Residents describe the Mapleton Hill neighborhood in Boulder, CO as walkable to restaurants, pedestrian-friendly, and dog-friendly. See homes for sale in Mapleton Hill, Boulder.
  • What are the closest schools to 1125 Maxwell Ave?
    The closest schools to 1125 Maxwell Ave in Boulder, CO are Boulder High School (rated 9/10), Casey Middle School (rated 5/10), Whittier Elementary School (rated 6/10).
  • Does 1125 Maxwell Ave have air conditioning?
    Yes, 1125 Maxwell Ave in Boulder, CO has air conditioning.
  • Does 1125 Maxwell Ave have laundry facilities?
    Yes, 1125 Maxwell Ave in Boulder, CO has in-unit laundry.
1125 Maxwell Ave, Boulder, CO 80304 is a 4 bedroom, 5 bathroom, 3,252 sqft single-family home built in 1922. 1125 Maxwell Ave is located in Mapleton Hill, Boulder. This property is currently available for sale and was listed by IRES as distributed by MLS GRID on Sep 3, 2026. The MLS # for this home is MLS# 1067914.