See Home Value
$1,000,000
● House - Off Market

635 Alpine Ave

Boulder, CO 80304
bedrooms
3 Beds
bathrooms
1 Bath
square feet
1,906 Ft²
$6,360
Est. Monthly
2.04%
Cap Rate

About This Property

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.
Unit Size
1,906 Ft²
Days on Market
39 days
Land Size
0.19 acres
Price per sqft
$603
Property Type
House
Property Taxes
$713
HOA Dues
-
Year Built
1909

Payment Calculator

Cap Rate Calculator

Last updated: 2 years ago (IRES MLS #1028307)

Price History

Date / Event Date Event Price
May 23, 2025 Sold
Sold
Apr 16, 2025 Price Decreased $1,150,000
↓ $45K (3.8%)
Price Decreased
Mar 12, 2025 Listed $1,195,000
Listed
Mar 26, 2012 Sold
Sold
Jul 17, 2007 Sold
Sold

Property Highlights


Building Info

Overview

    General

  • Year Built: 1909
  • Effective Year Built: 1975
  • Building Count: 1
  • Total Rooms: 7
  • Bedroom Count: 4
  • Bathroom Count: 2
  • Full Bathrooms: 1
  • Partial Bathrooms: 2
  • Building Condition: 6
  • Building Quality: 10
  • Construction Type: 6
  • Building Style: 11
  • Exterior Walls Type: 16
  • Interior Walls Type: 6
  • Roof Shape Type: 0
  • Roof Cover Type: 15
  • Floor Count: 100
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 1
  • Basement Area: 667
  • Garage Type: 4
  • Garage Square Area: 360
  • Parking Space Count: 1
  • Patio Type: 20
  • Porch Type: 8
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 8,414
  • Total Building Area: 1,606
  • Gross Building Area: 1,606
  • Building Area: 1,606
  • Building Area Measurement: L

    Heating and Cooling

  • Air Conditioning: 0
  • Heating: 4
  • Heated Square Feet: 1,606
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: NEWLANDS - BO
  • Land Acres: 0000000193
  • Standard Land Use Code: 1110
  • County Land Use Code: 1115
  • Legal Description 1: S150 FT LOT 16 BLK 26 NEWLANDS

Neighborhood

  • School District Name: Boulder Valley School District RE-2
  • Census Tract: 012101

Geography

  • Assessors Map Reference: B17-F
  • Account Number: R0005377
  • Parcel: R0005377
  • Block: 26
  • Lot: 16
  • Meridian: SEC 25 TWN 1N RNG 71
  • Municipality: BOULDER
  • Latitude: 40.0257
  • Longitude: -105.287

    Address

  • Full Address: 635 Alpine Ave
  • Address - House Number: 635
  • Address - Street Name: Alpine
  • Address - Suffix Type: Ave
  • State: CO
  • City Name: Boulder
  • Carrier Code: C045
  • 4-Digit Zip Code: 3281
  • Zip Code: 80304

Valuation

    Tax

  • Tax Year: 2022
  • Tax Amount: $688,874
  • Initial Tax Delinquent Year: 2022
  • Tax Rate Code Area: 00-010

    Appraisal Valuation

  • Standard Deviation: 0.1632
  • Valuation Date: Jul 05, 2023
  • Confidence Score: 67
  • Final Value: 1,436,550
  • High Value: 1,671,041
  • Low Value: 1,202,058

    Market Valuation

  • Market Total Value: $1,508,500
  • Market Land Value: $1,357,650
  • Market Improvement Value: $150,850

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $102,050
  • Assessed Land Value: $91,845
  • Assessed Improvements Value: $10,205

    Sales

  • Current Sale Contract Date: Mar 15, 2012
  • Current Sale Recording Date: Mar 26, 2012
  • Current Sale Price:
  • Current Sale Document Type: 71
  • Current Sale Input Document Number: 3211882
  • Previous Sale Recording Date: Jul 17, 2007
  • Previous Sale Contract Date: Jun 28, 2007
  • Previous Sale Amount: $600,000
  • Previous Sale Document Type: 71
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Central Boulder


Similar Homes for Sale

Currently no similar homes around

Nearby Rentals



Frequently Asked Questions

When was property at 635 Alpine Avenue built and last sold?
The property at 635 Alpine Avenue was built in 1909 and last sold on Mar 15, 2012 for $570,000.
How much is this home worth?
The estimated value of the home located at 635 Alpine Avenue is $0.
What are some comparable homes to 635 Alpine Avenue?
There are currently no comparable homes to 635 Alpine Avenue.