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635 Alpine Ave

Boulder, CO 80304

3 beds
2 baths
1,906 sqft
8,414 sqft lot
$603 per sqft
1909 build
– on site

A rare and versatile opportunity in the heart of West Boulder's beloved Newlands neighborhood. Set on an expansive 8,400-square-foot lot, this duplex-zoned property directly borders North Boulder Park, offering an exceptional canvas for redevelopment or a custom home in one of the city's most sought-after enclaves. The existing cottage includes a welcoming wraparound front porch, hardwood floors, and a flexible walk-out lower level with a private entrance and second kitchen-ideal for rental income or multi-unit living as you plan your future project. The true value of this property lies in its unbeatable location. With North Boulder Park as your backyard, enjoy year-round recreation, from summer picnics and sports fields to groomed cross-country ski trails in winter. Just minutes away, you'll find Ideal Market, renowned dining, and the vibrant energy of Pearl Street, while nearby Mount Sanitas offers world-class hiking and outdoor adventure. An incredible setting, limitless potential, and a premier Boulder address-this is a rare opportunity to secure a coveted piece of real estate in one of the city's most desirable neighborhoods.

Listing courtesy of IRES

Last checked: Checking… • Last updated Apr 14, 2025 •

MLS# 1028307 —

This home is listed in more than one place. See it here.

The Building

Year Built:

1909
New Construction:

false
Construction Materials:

Wood Siding
Total SqFt:

1,906 Sqft
Building Area Total:

1906
Roof:

Composition
Levels:

Two
Basement:

Full
Stories:

2
Direction Faces:

South
Window Features:

Window Coverings
Green Energy Efficient:

Southern Exposure
Above Grade Finished Area:

1906

Interior

Interior Features:

In-Law Floorplan
Flooring:

Wood Floors
Living Room Level:

Main
Living Room Features:

Luxury Vinyl Floor
Kitchen Level:

Main
Kitchen Features:

Luxury Vinyl Floor
Dining Room Level:

Main
Dining Room Features:

Luxury Vinyl Floor
Family Room Level:

Main
Family Room Features:

Luxury Vinyl Floor
Laundry Features:

Main Level

Room Dimensions

Living Area:

1906
Living Area Units:

Square Feet
Living Area Source:

Other
Main Floor SqFt:

974
Living Room Area:

143
Living Room Length:

11
Living Room Width:

13
Kitchen Length:

10
Kitchen Area:

80
Kitchen Width:

8
Dining Room Area:

120
Dining Room Length:

10
Dining Room Width:

12
Family Room Area:

121
Family Room Length:

11
Family Room Width:

11
Master Bedroom Area:

108
Master Bedroom Width:

12
Master Bedroom Length:

9
Bedroom 2 Area:

81
Bedroom 2 Length:

9
Bedroom 3 Length:

17
Bedroom 2 Width:

9
Bedroom 3 Area:

153
Bedroom 3 Width:

9

Financial & Terms

Listing Terms:

Cash

Location

Coordinates:

-105.28748, 40.02577
Latitude:

40.02577
Longitude:

-105.28748

The Property

Property Type:

Residential
Property Subtype:

Residential-Detached
Parcel Number:

R0005377
Lot Features:

Corner Lot
Lot Size Acres:

0.19
Lot Size SqFt:

8,414 Sqft
Lot Size Area:

8414
Lot Size Units:

Square Feet
Zoning:

RES
Possible Use:

Single Family
Exclusions:

Seller's personal property.
Horse:

false
Fencing:

Fenced
Waterfront:

false
Has Water Rights:

No

Listing Agent

Contact info:

Taxes

Tax Year:

2024
Tax Annual Amount:

$8,559

Beds

Bedrooms Total:

3
Bedroom 2 Level:

Main
Bedroom 2 Features:

Wood Floor
Bedroom 3 Level:

Lower
Bedroom 3 Features:

Vinyl Floor
Master Bedroom Level:

Main
Master Bedroom Features:

Wood Floor

Baths

Total Baths:

2
Three Quarter Baths:

1
Full Baths:

1
Master Bath Features:

Shared Primary Bath

The Listing

Virtual Tour URL Unbranded:

https://youtu.be/H2-lB32E5WQ
Special Listing Conditions:

Private Owner

Heating & Cooling

Heating:

Forced Air
Heating:

true
Cooling:

Ceiling Fan(s)
Cooling:

true

Utilities

Utilities:

Natural Gas Available
Gas:

Natural Gas, Xcel
Electric:

Electric, Xcel
Sewer:

City Sewer
Water Source:

City Water, City of Boulder

Appliances

Appliances:

Electric Range/Oven

Schools

Elementary School:

Foothill
Middle School:

Casey
High School:

Boulder
High School District:

Boulder Valley Dist RE2

The Community

Association:

false
Subdivision Name:

Newlands
Spa:

false
Senior Community:

false

Parking

Garage Spaces:

1
Garage:

true
Garage Type:

Detached
Attached Garage:

false
Covered Spaces:

1

Monthly cost estimate

Asking price

$1,150,000

Expense	Monthly cost
Mortgage	$6,157
Taxes	$713
Insurance	$316
Utilities	$173 See report
Total	$7,359/mo.^*
	^*This is an estimate

Explore the Area

My Commute

From

Walk Score®

Provided by WalkScore® Inc.

Bike Score®

Provided by WalkScore® Inc.

Transit Score®

Provided by WalkScore® Inc.

Soundscore™

Provided by HowLoud

Air Pollution Index

Provided by ClearlyEnergy

Sale history

Date	Event	Source	Price	% Change
4/14/25 Apr 14, 2025	Price Changed	IRES	$1,150,000	-3.8%
3/13/25 Mar 13, 2025	Listed / Active	IRES	$1,195,000

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This house located in Central Boulder, Boulder, CO 80304 is currently for sale for $1,150,000. 635 Alpine Ave is a 1,906 square foot house with 3 beds and 2 baths that has been on Estately for 36 days. 635 Alpine Ave is in the Central Boulder neighborhood of Boulder and has a WalkScore® of 73, making it very walkable. This house is in the attendance area of Casey Middle School, Foothill Elementary School, and Boulder High School.

Listing Courtesy of: IRES

TERMS OF USE: listing information 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.

Information deemed reliable but not guaranteed by the MLS