OFF MARKET

Off market jul 2025 for $975K

$1,184,391

Est. refi paymentEst. refi $6,378/mo

•

2,430

sq ft

345 Colgate St, Boulder, CO 80305

About this home

Public Remarks: Infused with natural light and inviting charm, this Highland Park home sits on a quiet street with gorgeous views of the Flatirons. An open and airy floorplan unfolds with beautiful hardwood flooring and wide windows throughout. Enjoy relaxing and entertaining in a bright and spacious living area. The kitchen features stainless steel appliances, ample cabinetry and a center island, while the adjacent dining area offers a modern light fixture and access to the backyard through sliding glass doors. A spacious finished lower level provides flexibility for a rec room, guest suite or a home office. The fully fenced backyard with a large patio and raised garden beds is ideal for entertaining, pets or relaxation. Off-street parking for two cars is an added convenience. Just moments from shops, dining, coffee and all that South Boulder has to offer - with quick access to CU, Denver, the mountains and public transportation - this home delivers the perfect balance of location, comfort and views.

Single-familyProperty Type

1957Year Built

7,513 sq ftLot Size

$487Est. Price/Sq.Ft.

2 car garageParking

Listed by Tracy Zaik • milehimodern - Boulder

Contact: 3038597271

Bought with R Tim Goodacre • milehimodern - Boulder

•303-876-1073 (broker)

Redfin checked: 2 minutes ago

•Source:IRES as Distributed by MLS Grid #1031182

Redfin Estimate

$1,184,391

$209K since sold in July 2025$175K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 4.9% higher than the average sale price ($1.13M) of 6 comparable homes.

SOLD JUL 30, 2026
$1,235,000
A
4 beds2.5 baths2,371 sq ft
3565 Martin Dr, Boulder, CO 80305
SOLD JUL 2, 2026
$998,000
B
3 beds2.5 baths2,304 sq ft
265 S 39th St, Boulder, CO 80305
SOLD JUN 18, 2026
$1,199,000
C
4 beds2.5 baths2,436 sq ft
310 S 40th St, Boulder, CO 80305
SOLD JUN 15, 2026
$942,000
D
4 beds2 baths1,843 sq ft
620 S 42nd St, Boulder, CO 80305
SOLD APR 16, 2026
$1,186,000
E
5 beds3 baths2,304 sq ft
345 S 38th St, Boulder, CO 80305
RE/MAX of Boulder
SOLD AUG 7, 2026
$1,212,000
F
3 beds2 baths1,478 sq ft
160 S 36th St, Boulder, CO 80305

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Earn from this home

Sell

$350,322

Est. take-home

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Refinance

Est. cash available

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Rent

$4,217/mo

Redfin rental estimate

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Market trends in 80305, CO

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

98.4%

0.5% MoM

Median sale price

$972K

$21K MoM

Avg. days on market

41d

1 days MoM

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6 MoM

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Provided by Redfin

Sale history for 345 Colgate St

Date

Event

Price

IRES as Distributed by MLS Grid #1031182

Jul 10, 2025

Sold

$975,000

$401/sq ft

Jun 11, 2025

Contingent

—

Jun 10, 2025

Price Changed

$998,000

$411/sq ft

May 8, 2025

Price Changed

$1,025,000

$422/sq ft

Apr 18, 2025

Listed

$1,075,000

$442/sq ft

Apr 15, 2025

Coming Soon

$1,075,000

$442/sq ft

IRES as Distributed by MLS Grid #1013144

Sep 17, 2024

Listing Removed

—

Jun 28, 2024

Listed

$1,175,000

$484/sq ft

IRES as Distributed by MLS Grid #833031

Dec 18, 2017

Sold

$755,000

$311/sq ft

Nov 8, 2017

Contingent

—

Oct 31, 2017

Price Changed

$699,900

$288/sq ft

Oct 31, 2017

Price Changed

$769,900

$317/sq ft

Oct 9, 2017

Price Changed

$779,000

$321/sq ft

Sep 22, 2017

Listed

$800,000

$329/sq ft

REColorado as Distributed by MLS Grid #2573566

Oct 31, 2017

Price Changed

$769,900

$317/sq ft

Oct 31, 2017

Price Changed

$699,900

$288/sq ft

Oct 9, 2017

Price Changed

$779,000

$321/sq ft

Sep 22, 2017

Listed

$800,000

$329/sq ft

Public Records

Apr 22, 2016

Sold

$715,000

$294/sq ft

REColorado as Distributed by MLS Grid #8747062

Mar 4, 2016

Listed

$715,000

$294/sq ft

IRES as Distributed by MLS Grid #427733

Dec 14, 2004

Sold

$320,000

$132/sq ft

Sep 25, 2004

Listed

$329,500

$136/sq ft

Join or sign in to view all info

Year

Property tax

Land + Additions

Assessment*

2025

$7,349 (+14.3%)

$55,463 + $20,763

$76,226

2024

$6,430 (+1.8%)

$55,463 + $20,763

$76,226

2023

$6,318 (+16.3%)

$59,965 + $13,199

$73,164

2022

$5,432 (+4.9%)

$63,650 + $13,199

$76,849

2021

$5,180 (−0.3%)

$46,822 + $11,669

$58,491

2020

$5,194 (+1.6%)

$48,170 + $12,005

$60,175

2019

$5,115 (+14.3%)

$44,330 + $15,344

$59,674

2018

$4,473 (+3.2%)

$44,330 + $15,344

$59,674

2017

$4,333 (+22.6%)

$31,248 + $20,347

$51,595

2016

$3,535 (+5.6%)

$31,248 + $20,347

$51,595

2015

$3,347 (+25.0%)

$25,154 + $15,689

$40,843

2014

$2,677 (+2.2%)

$12,338 + $18,802

$31,140

2013

$2,618 (+3.3%)

$12,338 + $18,802

$31,140

2012

$2,534 (+0.9%)

$12,338 + $18,802

$31,140

2011

$2,512 (−8.1%)

$16,477 + $13,771

$30,248

2010

$2,734 (+7.1%)

$16,477 + $13,771

$30,248

2009

$2,553

$22,130 + $11,700

$33,830

Tax history for 345 Colgate St

Year

Property tax

Land + Additions

Assessment*

2025

$7,349 (+14.3%)

$55,463 + $20,763

$76,226

2024

$6,430 (+1.8%)

$55,463 + $20,763

$76,226

2023

$6,318 (+16.3%)

$59,965 + $13,199

$73,164

2022

$5,432 (+4.9%)

$63,650 + $13,199

$76,849

2021

$5,180 (−0.3%)

$46,822 + $11,669

$58,491

2020

$5,194 (+1.6%)

$48,170 + $12,005

$60,175

2019

$5,115 (+14.3%)

$44,330 + $15,344

$59,674

2018

$4,473 (+3.2%)

$44,330 + $15,344

$59,674

2017

$4,333 (+22.6%)

$31,248 + $20,347

$51,595

2016

$3,535 (+5.6%)

$31,248 + $20,347

$51,595

2015

$3,347 (+25.0%)

$25,154 + $15,689

$40,843

2014

$2,677 (+2.2%)

$12,338 + $18,802

$31,140

2013

$2,618 (+3.3%)

$12,338 + $18,802

$31,140

2012

$2,534 (+0.9%)

$12,338 + $18,802

$31,140

2011

$2,512 (−8.1%)

$16,477 + $13,771

$30,248

2010

$2,734 (+7.1%)

$16,477 + $13,771

$30,248

2009

$2,553

$22,130 + $11,700

$33,830

*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

7,513

Year renovated

1995

Sq. Ft.

2,430

Year built

1957

Style

Single Family Residential

County

Boulder County

APN

R0000685

Parking Spaces

Basement

Accessible

HOA Dues

—

Garage

Yes

Features

Green

Last updated by owner on Aug 27, 2026.

Property details

Parking

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

Interior

Bathroom Information
Bathrooms (Full): 2
Bathrooms (Half): 0
Bathrooms (Three Quarter): 0

Bedroom Information
Bedrooms Total: 4

Heating & Cooling
Heating: Yes
Hot Water, Baseboard, 2 or more Heat Sources

Interior Features
Gas Range/Oven, Dishwasher, Refrigerator
Study Area, Open Floorplan, Pantry, Kitchen Island
Laundry Features: In Basement

Room Information
Basement: Built-In Radon

Exterior

Exterior Features
Lighting
Fencing: Fenced
Patio and Porch Features: Patio
Roof: Composition

Land Information
Road Surface Type: Paved, Asphalt

Lot Information
Horse(s): No
Lot Features: Curbs, Gutters, Sidewalks, Fire Hydrant within 500 Feet, Lawn Sprinkler System, Wooded
Other Structures: Storage
Road Frontage Type: City Street
Zoning: RES

Property Information
Property Type: Residential
Waterfront: No

Subdivision Information
Subdivision Name: Highland Park 5
MLS Area Major: Boulder

Building Information
Above Grade Finished Area: 1215
Below Grade Finished Area: 1215
Building Area Total: 1215
Construction Materials: Brick/Brick Veneer

Financial

Tax Information
Parcel Number: R0000685
Tax Annual Amount: 6430
Tax Year: 2024

Financial Information
Listing Terms: Cash, Conventional

Utilities

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

Location

HOA Information
Association: No

School Information
High School District: Boulder Valley Dist RE2
Elementary School: Bear Creek
Middle or Junior School: Southern Hills
High School: Fairview

Location Information
Directions: Broadway to Dartmouth, west on Dartmouth, left on Colgate to property on right.
Unparsed Address: 345 Colgate St Boulder CO 80305
Street Number: 345
Street Name: Colgate
Street Suffix: St
City: Boulder
State or Province: CO
County or Parish: Boulder
Country: US
Postal Code: 80305
Coordinates: -105.2569,39.98838
Latitude: 39.98838
Longitude: -105.2569

Public facts

Beds: 5
Baths: 2.5
Sq. Ft.: 2,430
Stories: 1.0
Parking Spaces: 2
Basement: No
Accessible: No
Lot Size: 7,513 square feet
Style: Single Family Residential
Year Built: 1957
Year Renovated: 1995
County: Boulder County
APN: R0000685
HOA Dues: —
Garage: Yes
Features: Green

Home facts updated by owner on Aug 27, 2026

Other

Miscellaneous Information
Exclusions: Seller's personal property.

Listing Information
Attribution Contact: 3038597271
Close Price: $975,000
Photos Count: 35
Possible Use: Single Family
Special Listing Conditions: Private Owner
Standard Status: Closed

Listing Date Information
Close Date: Thursday, July 10, 2025
Cumulative Days on Market: 84
Days on Market: 84
Listing Contract Date: Tuesday, April 15, 2025
Modification Timestamp: Thursday, July 10, 2025 5:09 PM

Home Information
Year Built: 1957

Around this home

Schools

Creekside Elementary School At Martin Park

Public PreK-5 • Assigned • 0.4mi

10/10

Southern Hills Middle School

Public 6-8 • Assigned • 1.1mi

10/10

Fairview High School

Public 9-12 • Assigned • 1.2mi

10/10

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

5/10 Fire Factor

3% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 91° 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 • 80305

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 10.4 hours in June and 6.1 hours in December, placing it above the U.S. average for solar exposure.

10.4 hrs

6.1 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.13M – $1.36M

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Home values near 345 Colgate St

Data from public records.

Address	Redfin Estimate
325 Colgate St, Boulder, CO 5 Beds \| 3 Baths \| 2975 Sq. Ft.	$1,572,530
340 Colgate St, Boulder, CO 3 Beds \| 2 Baths \| 1954 Sq. Ft.	$938,878

Address	Redfin Estimate
320 Colgate St, Boulder, CO 4 Beds \| 1.5 Baths \| 1520 Sq. Ft.	$874,692
330 Colgate St, Boulder, CO 3 Beds \| 2 Baths \| 2724 Sq. Ft.	$976,872

Address	Redfin Estimate
350 Colgate St, Boulder, CO 3 Beds \| 2.5 Baths \| 2430 Sq. Ft.	$1,180,859
335 Colgate St, Boulder, CO 3 Beds \| 3 Baths \| 3320 Sq. Ft.	$1,260,154

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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 80305, CO

Sale history for 345 Colgate St

Tax history for 345 Colgate St

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 80305

Home values near 345 Colgate St

More real estate resources