635 Alpine Ave, Boulder, CO 80304
Property image
Property image
OFF MARKET

635 Alpine Ave
Boulder, CO 80304

Newlands
  • 3 Beds
  • 2 Baths
  • 1,906 sqft

$1,370,600

Trulia Estimate
as of Aug 7, 2026
Est. Refi. Payment $7,697/mo*
Refinance Your Home

$1,370,600

Trulia Estimate
as of Aug 7, 2026
Est. Refi. Payment $7,697/mo*
Refinance Your Home
3 Beds
2 Baths
1,906 sqft

Local Information

  • Map ViewExplore the area around 635 Alpine Ave.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1909
Living Area
1,906 sqft
Price/Sqft
$719
Parking
Garage

About this House

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.
635 Alpine Ave, Boulder, CO 80304 is a 3 bedroom, 2 bathroom, 1,906 sqft single-family home in Newlands, built in 1909. It last sold for $1,000,000 on May 23, 2025 (13% below the $1,150,000 asking price). More recently, it was listed as a rental in July 2025 with an asking price of $5,250 per month. That rental listing was removed on August 2, 2025. It is currently off market. The Trulia Estimate is $1,370,600, with a rent estimate of $4,015/month.

Home Details for 635 Alpine Ave

Interior Features

Interior Details
Basement: Full,Partially Finished,Walk-Out AccessNumber of Rooms: 8Types of Rooms: Primary Bedroom, Bedroom 2, Bedroom 3, Dining Room, Family Room, Kitchen, Laundry, Living Room
Beds & Baths
Number of Bedrooms: 3Number of Bathrooms: 2Number of Bathrooms (full): 1Number of Bathrooms (three quarters): 1Number of Bathrooms (main level): 1
Dimensions and Layout
Living Area: 1906 Square Feet
Appliances & Utilities
Utilities: Natural Gas Available, Electricity AvailableAppliances: Electric Range, Refrigerator, Washer, Dryer, MicrowaveDryerMicrowaveRefrigeratorWasher
Heating & Cooling
Heating: Forced AirHas CoolingAir Conditioning: Ceiling Fan(s)Has HeatingHeating Fuel: Forced Air
Gas & Electric
Electric: XcelGas: XcelHas Electric on Property
Windows, Doors, Floors & Walls
Window: Window CoveringsFlooring: Wood
Levels, Entrance, & Accessibility
Stories: 2Levels: TwoFloors: Wood
View
No View

Exterior Features

Exterior Home Features
Roof: CompositionFencing: Fenced, Wood
Parking & Garage
Number of Garage Spaces: 1Number of Covered Spaces: 1Other Parking: DetachedNo CarportHas a GarageNo Attached GarageParking Spaces: 1Parking: Detached
Frontage
Not on Waterfront
Water & Sewer
Sewer: Public Sewer
Farm & Range
Does Not Include Irrigation Water Rights
Finished Area
Finished Area (above surface): 1906 Square Feet

Property Information

Year Built
Year Built: 1909
Property Type / Style
Property Type: ResidentialProperty Subtype: Mixed Use
Building
Construction Materials: Wood SidingNot a New ConstructionNot Attached Property
Property Information
Usage of Home: Single Family, Multi-FamilyNot Included in Sale: Seller's personal property.Parcel Number: R0005377

Price & Status

Price
List Price: $1,150,000

Active Status

MLS Status: Sold

Media

Location

Direction & Address
City: BoulderCommunity: Newlands
School Information
Elementary School: FoothillJr High / Middle School: CaseyHigh School: BoulderHigh School District: Boulder Valley Dist RE2

Building

Building Area
Building Area: 1906 Square Feet

HOA

No HOA

Lot Information

Lot Area: 8414 sqft

Listing Info

Special Conditions: Private Owner

Offer

Listing Terms: Cash, Conventional

Energy

Energy Efficiency Features: Southern Exposure, Windows

Miscellaneous

BasementMls Number: 1028307Attribution Contact: 720-480-7650Above Grade Unfinished Area: 1906Activation Date: Thu Mar 13 2025Back On Market Date: Mon Apr 14 2025Showing Service Name: ShowingTime
Last check for updates: about 2 hours ago
Listed by The Zach Zeldner Team, (720) 480-7650
Compass - Boulder
Ethan Bullock, (303) 501-4959
Compass - Boulder
Bought with: The Zach Zeldner Team, (720) 480-7650, Compass - Boulder
Source: IRES as distributed by MLS GRID, MLS#1028307

Price History for 635 Alpine Ave

DatePriceEventSource
08/02/2025$3,950ListingRemovedZillow Rentals
07/28/2025$3,950PriceChange
Zillow Rentals
07/15/2025$4,400PriceChange
Zillow Rentals
07/12/2025$4,950PriceChange
Zillow Rentals
07/10/2025$5,250Listed For RentZillow Rentals
05/23/2025$1,000,000Sold
IRES as distributed by MLS GRID #1028307
05/06/2025$1,150,000PendingREcolorado as distributed by MLS GRID #IR1028307
04/14/2025$1,150,000PriceChange
IRES as distributed by MLS GRID #1028307
04/04/2025$1,195,000PendingREcolorado as distributed by MLS GRID #IR1028307
03/13/2025$1,195,000Listed For SaleREcolorado as distributed by MLS GRID #IR1028307
03/15/2012$570,000Sold
IRES as distributed by MLS GRID #662250
12/16/2011$650,000ListingRemovedAgent Provided
08/05/2011$650,000Listed For SaleAgent Provided
07/17/2007$600,000Sold
N/A

Market trends in Boulder

Last updated June 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$891K
$60.83KMoM
Sale-to-List Price
98.2%
0.4%MoM
Price per sq ft
$503
$2MoM
Available listings
778
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Property Tax and Assessment

Year2025
Tax$8,559
Assessment$1,408,000
Home facts updated by county records

Comparable Sales for 635 Alpine Ave

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
810 Alpine Ave, Boulder, CO
0.08
Single-Family Home
$1,255,000
06/30/26
3
2
1,700
653 Dewey Avenue, Boulder, CO
0.14
Single-Family Home
$1,600,000
06/01/26
3
2
1,800
826 Maxwell Avenue, Boulder, CO
0.31
Single-Family Home
$1,450,000
06/30/26
3
2
1,620
3075 5th St, Boulder, CO
0.37
Single-Family Home
$995,000
03/11/26
3
2
1,291
3150 5th Street, Boulder, CO
0.45
Single-Family Home
$1,000,000
04/20/26
3
2
1,836
2651 9th St, Boulder, CO
0.08
Single-Family Home
$960,000
04/28/26
4
3
1,968
2815 11th St, Boulder, CO
0.23
Single-Family Home
$1,595,000
03/05/26
4
3
2,070
405 Valley View Dr, Boulder, CO
0.21
Single-Family Home
$1,810,000
03/02/26
3
2.5
1,937
3134 11th St, Boulder, CO
0.48
Single-Family Home
$1,350,000
05/27/26
3
2
1,740

Nearby homes

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Assigned Schools

These are the assigned schools for 635 Alpine Ave.
View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

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

What Locals Say about Newlands

At least 11 Trulia users voted on each feature.

  • 100 % Say there's holiday spirit

  • 100 % Say it's dog friendly

  • 94 % Say it's walkable to restaurants

  • 92 % Say parking is easy

  • 92 % Say yards are well-kept

  • 91 % Say it's walkable to grocery stores

  • 83 % Say there are sidewalks

  • 83 % Say kids play outside

  • 81 % Say people would walk alone at night

  • 77 % Say there's wildlife

  • 65 % Say neighbors are friendly

  • 64 % Say they plan to stay for at least 5 years

  • 61 % Say car is needed

  • 59 % Say it's quiet

  • 50 % Say streets are well-lit

  • 50 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • susanljosephs
    "The most sought after neighborhood in Boulder, great schools, access to mountain trails, friendly neighbors, hard to find property in this neighborhood."
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Apartments for Rent

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Explore by feature - Pet Friendly

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Homes for sale near 635 Alpine Ave

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Off Market Homes Near 635 Alpine Ave

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Frequently asked questions about 635 Alpine Ave

  • What is 635 Alpine Ave estimated to be worth?
    Trulia's estimated value for 635 Alpine Ave in Boulder, CO is $1,370,600.
  • What is the price history for 635 Alpine Ave?
    635 Alpine Ave in Boulder, CO last sold for $1,000,000 in May 2025.
  • Is Boulder a buyer's or seller's market?
    Boulder is currently a balanced market, based on recent for-sale activity.
  • What's the median sale price in Boulder?
    The median sale price in Boulder is $891K. That is down $60.83K from the prior month.
  • Does 635 Alpine Ave have air conditioning?
    Yes, 635 Alpine Ave in Boulder, CO has air conditioning.
  • Does 635 Alpine Ave have laundry facilities?
    Yes, 635 Alpine Ave in Boulder, CO has in-unit laundry.
Based on information submitted to the MLS GRID as of 2026-08-07 12:33:09 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