OFF MARKET

Off market apr 2021 for $1.8M

$2,270,805

Est. refi paymentEst. refi $12,259/mo

•

3,228

sq ft

1812 Mapleton Ave, Boulder, CO 80304

About this home

Public Remarks: Bright, sunny Whittier Neighborhood charmer! 3 blocks from Pearl St. Remodeled from top to bottom, this spacious open plan merges living, dining and kitchen and opens up to a large south-facing porch w stunning Flatiron views. Vaulted ceilings, skylights, marble countertops, gas fireplace, and white oak flooring plus main level home office and pvt. entrance. The upper-level primary and 2nd bdrms shine with original character boasting views and plenty of sunshine. Enjoy the charming new basement with 8.5' ceilings, brick floors and family room, plus 3rd bdrm/bath, gas fireplace and wine storage. Step into the garden where you'll find rows of lavender, kitchen garden, and xeriscape-landscaping. This property includes an additional 1,011 sf remodeled Cottage/Carriage house w/ 3 bedrooms (1 non-conforming), a 3/4 bath and a wet bar. The loft bdrm is 22x21. Loads of sunny space to relax, work, and play.

Single-familyProperty Type

1925Year Built

7,491 sq ftLot Size

$703Est. Price/Sq.Ft.

2 car garageParking

Listed by Kim Dunning • Coldwell Banker Realty-Boulder

Contact: 3034495000

Bought with Jodi Lillis • WK Real Estate

•303-443-2240 (broker)

Redfin checked: 3 minutes ago

•Source:IRES as Distributed by MLS Grid #934486

Redfin Estimate

$2,270,805

$471K since sold in April 2021$17K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 7.3% higher than the average sale price ($2.12M) of 6 comparable homes.

SOLD SEP 2, 2026
$2,750,000
A
4 beds3.5 baths3,022 sq ft
2550 Balsam Dr, Boulder, CO 80304
SOLD OCT 5, 2026
$2,160,000
B
3 beds2 baths2,982 sq ft
1505 Mapleton Ave, Boulder, CO 80304
SOLD MAY 22, 2026
$1,980,000
C
5 beds3 baths2,864 sq ft
2360 Balsam Dr, Boulder, CO 80304
SOLD SEP 1, 2026
$2,150,000
D
4 beds2.5 baths2,680 sq ft
1730 Bluff St, Boulder, CO 80304
SOLD OCT 31, 2025
$1,560,000
E
5 beds3 baths2,340 sq ft
1519 16th St, Boulder, CO 80302
RE/MAX of Boulder
SOLD AUG 14, 2026
$2,100,000
F
5 beds4 baths3,034 sq ft
320 Pearl St, Boulder, CO 80302

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Earn from this home

Sell

$851,376

Est. take-home

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Refinance

Est. cash available

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Rent

$7,093/mo

Redfin rental estimate

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Market trends in 80304, CO

Last updated September 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-List Price

97.3%

+0.1% MoM

Median sale price

$1.4M

$0 MoM

Avg. days on market

72d

9 days MoM

Recently sold homes

118

10 MoM

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$1,350,000
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OPEN SUN, 2PM TO 4PM
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See all

Provided by Redfin

Sale history for 1812 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$14,072 (+6.6%)

$69,419 + $78,163

$147,582

2024

$13,200 (+1.8%)

$69,419 + $78,163

$147,582

2023

$12,971 (+17.8%)

$73,110 + $77,084

$150,194

2022

$11,014 (+11.4%)

$73,110 + $80,769

$153,879

2021

$9,887 (+18.0%)

$57,060 + $61,542

$118,602

2020

$8,377 (+1.6%)

$58,702 + $63,313

$122,015

2019

$8,249 (+7.1%)

$50,336 + $53,053

$103,389

2018

$7,702 (+3.2%)

$50,336 + $53,053

$103,389

2017

$7,461 (+11.0%)

$38,592 + $57,442

$96,034

2016

$6,719 (+5.6%)

$38,592 + $57,442

$96,034

2015

$6,363 (+62.3%)

$34,228 + $51,358

$85,586

2014

$3,920 (+2.3%)

$24,358 + $29,197

$53,555

2013

$3,834 (−10.7%)

$24,358 + $29,197

$53,555

2012

$4,294 (+0.9%)

$24,358 + $29,197

$53,555

2011

$4,257 (+2.3%)

$29,691 + $21,572

$51,263

2010

$4,162 (+7.1%)

$29,691 + $21,572

$51,263

2009

$3,887

$40,120 + $11,380

$51,500

Tax history for 1812 Mapleton Ave

Year

Property tax

Land + Additions

Assessment*

2025

$14,072 (+6.6%)

$69,419 + $78,163

$147,582

2024

$13,200 (+1.8%)

$69,419 + $78,163

$147,582

2023

$12,971 (+17.8%)

$73,110 + $77,084

$150,194

2022

$11,014 (+11.4%)

$73,110 + $80,769

$153,879

2021

$9,887 (+18.0%)

$57,060 + $61,542

$118,602

2020

$8,377 (+1.6%)

$58,702 + $63,313

$122,015

2019

$8,249 (+7.1%)

$50,336 + $53,053

$103,389

2018

$7,702 (+3.2%)

$50,336 + $53,053

$103,389

2017

$7,461 (+11.0%)

$38,592 + $57,442

$96,034

2016

$6,719 (+5.6%)

$38,592 + $57,442

$96,034

2015

$6,363 (+62.3%)

$34,228 + $51,358

$85,586

2014

$3,920 (+2.3%)

$24,358 + $29,197

$53,555

2013

$3,834 (−10.7%)

$24,358 + $29,197

$53,555

2012

$4,294 (+0.9%)

$24,358 + $29,197

$53,555

2011

$4,257 (+2.3%)

$29,691 + $21,572

$51,263

2010

$4,162 (+7.1%)

$29,691 + $21,572

$51,263

2009

$3,887

$40,120 + $11,380

$51,500

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Zoning
Permits

Beds

Baths

2.5

Stories

—

Lot width

—

Lot depth

—

Lot size

7,491 Sq. Ft.

Year renovated

2003

Sq. Ft.

3,629

Year built

1925

Style

Single Family Residential

County

Boulder County

APN

R0004157

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 2, 2026.

Property details

Parking

Parking Features
Covered Spaces: 2
Garage: Yes
Garage Spaces: 2
Parking Features: Alley Access

Interior

Bathroom Information
Bathrooms (Full): 1
Bathrooms (Half): 1
Bathrooms (Three Quarter): 1

Bedroom Information
Bedrooms Total: 6

Heating & Cooling
Cooling: Yes
Central Air, Ceiling Fan(s), Attic Fan, Whole House Fan
Heating: Yes
Hot Water, Baseboard

Interior Features
Accessibility Features: Level Lot, Level Drive, Near Bus, Main Floor Bath, Main Level Laundry
Gas Range/Oven, Self Cleaning Oven, Dishwasher, Refrigerator, Microwave, Water Purifier Owned, Disposal
Fireplace: Yes
Fireplace Features: 2+ Fireplaces, Gas
Flooring: Wood Floors
Study Area, In-Law Floorplan, High Speed Internet, Separate Dining Room, Cathedral/Vaulted Ceilings, Open Floorplan, Pantry, Wet Bar, Kitchen Island
Laundry Features: Washer/Dryer Hookups, Main Level

Room Information
Basement: Partial, Crawl Space, Built-In Radon, Sump Pump

Exterior

Exterior Features
Lighting
Fencing: Fenced, Wood
Patio and Porch Features: Patio, Deck
Roof: Composition, Metal

Land Information
Road Surface Type: Paved, Asphalt

Lot Information
Horse(s): No
Lot Features: Curbs, Gutters, Sidewalks, Fire Hydrant within 500 Feet, Level, Within City Limits
Other Structures: Storage, Carriage House
Road Frontage Type: City Street
Zoning: RES

Property Information
Property Type: Residential
View: Yes
Waterfront: No

Subdivision Information
Subdivision Name: Whittier
MLS Area Major: Boulder

Building Information
Above Grade Finished Area: 2622
Below Grade Finished Area: 606
Building Area Total: 2622
Construction Materials: Wood/Frame, Composition Siding
Foundation Details: Slab

Financial

Tax Information
Parcel Number: R0004157
Tax Annual Amount: 8249
Tax Year: 2019

Financial Information
Listing Terms: Cash, Conventional

Utilities

Utility Information
Utilities: Natural Gas Available, Electricity Available, Cable Available
Electric: Electric,Xcel
Gas: Natural Gas,Xcel

Location

HOA Information
Association: No

School Information
High School District: Boulder Valley Dist RE2
Elementary School: Whittier
Middle or Junior School: Casey
High School: Boulder

Location Information
Unparsed Address: 1812 Mapleton Ave Boulder CO 80304
Street Number: 1812
Street Name: Mapleton
Street Suffix: Ave
City: Boulder
State or Province: CO
County or Parish: Boulder
Country: US
Postal Code: 80304
Coordinates: -105.27269,40.02232
Latitude: 40.02232
Longitude: -105.27269

Public facts

Beds: 6
Baths: 2.5
Sq. Ft.: 3,629
Stories: —
Lot Size: 7,491 square feet
Style: Single Family Residential
Year Built: 1925
Year Renovated: 2003
County: Boulder County
APN: R0004157

Home facts updated by county records on Sep 2, 2026

Other

Listing Information
Attribution Contact: 3034495000
Close Price: $1,800,000
Photos Count: 40
Possible Use: Single Family
Special Listing Conditions: Private Owner
Standard Status: Closed

Listing Date Information
Close Date: Monday, April 26, 2021
Cumulative Days on Market: 55
Days on Market: 55
Listing Contract Date: Wednesday, March 3, 2021
Modification Timestamp: Thursday, August 1, 2024 8:21 AM

Home Information
Direction Faces: North
Levels: Two
Window Features: Window Coverings, Wood Frames, Skylight(s), Double Pane Windows
Year Built: 1925

Green Information
Green Energy Efficient: Southern Exposure

Around this home

Schools

Whittier Elementary School

Public K-5 • Assigned • 0.2mi

6/10

Casey Middle School

Public 6-8 • Assigned • 0.4mi

5/10

Boulder High School

Public 9-12 • Assigned • 0.7mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

4/10 Fire Factor

1% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 90° expected this year, 19 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

2/10 Air Factor

2 unhealthy days expected this year, 2 days in 30 years

Provided by First Street

Historical weather

Boulder, CO • 80304

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 10.5 hours in June and 6 hours in December, placing it above the U.S. average for solar exposure.

10.5 hrs

6 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$2.17M – $2.63M

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Home values near 1812 Mapleton Ave

Data from public records.

Address	Redfin Estimate
1845 Mapleton Ave, Boulder, CO 3 Beds \| 1.5 Baths \| 2084 Sq. Ft.	$1,338,186
1736 Mapleton Ave, Boulder, CO 4 Beds \| 2.5 Baths \| 3619 Sq. Ft.	$2,238,729

Address	Redfin Estimate
1829 Mapleton Ave, Boulder, CO 2 Beds \| 1 Baths \| 1092 Sq. Ft.	$1,363,865
1844 Mapleton Ave, Boulder, CO 4 Beds \| 3 Baths \| 2383 Sq. Ft.	$1,953,353

Address	Redfin Estimate
1803 Mapleton Ave, Boulder, CO 4 Beds \| 2 Baths \| 2120 Sq. Ft.	$1,751,463
1836 Mapleton Ave, Boulder, CO 3 Beds \| 3 Baths \| 2210 Sq. Ft.	$2,222,010

Property information provided by IRES as Distributed by MLS Grid when last listed in 2021. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 80304, CO

Sale history for 1812 Mapleton Ave

Tax history for 1812 Mapleton Ave

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 80304

Home values near 1812 Mapleton Ave

More real estate resources