$1,995,000
SOLD JAN 9, 2026
6 Beds
4 Baths
3,201 Sq Ft
0.26 Acres

Recently Sold

$623 Per Sq Ft

3 Days on Market

Highlights

  • Deck
  • No HOA
  • Patio
  • Flatirons Elementary School Rated A
  • Views
  • Forced Air Heating System

About This Home

As of January 2026

Welcome to 636 Marine Street in Boulder-a captivating historic multiplex that exudes charm and artistic flair. Nestled in an amazing location, this exquisite property invites you to explore the heart of Boulder with ease. Just a stone's throw from the vibrant Pearl Street Mall and within minutes of the renowned Chautauqua hiking trails, it provides an unparalleled living experience for the discerning buyer or investor. This multiplex boasts a total of six bedrooms and four bathrooms within an expansive 3,201 square feet. Set on a generous double lot of 11,282 square foot, the property not only offers ample living space and extensive outdoor privacy but also presents a unique opportunity for rental income, with four distinct units ready to accommodate tenants. Steeped in history and character, the property serves as an ideal retreat for artists seeking inspiration amidst its serene outdoor spaces and stunning views. Investors will appreciate its excellent rental history, as three of the four units are currently occupied, ensuring a steady income stream. The fourth unit is a spacious 1,395 square foot and has been the caretakers/artist unit. Smart reg compliant and meticulously maintained, this property is an exceptional investment on a quarter-acre of prime real estate. Whether you're drawn by its potential for student housing or the allure of a Sundance Film Festival escape, 636 Marine Street is your gateway to owning a piece of Boulder's vibrant community.

Last Agent to Sell the Property

Lindsey Harshman

Coldwell Banker Realty 02 License #40035867 Listed on: 11/03/2025

Coldwell Banker Realty 02

Last Buyer's Agent

Matthew Johnke

Johnke, Matthew Realty License #323351

Property Details

Home Type

  • Multi-Family

Est. Annual Taxes

  • $11,793

Year Built

  • Built in 1911

Parking

  • 2 Parking Spaces

Home Design

  • Wood Frame Construction
  • Composition Roof

Interior Spaces

  • 3,201 Sq Ft Home
  • 2-Story Property
  • Electric Oven or Range
  • Property Views

Bedrooms and Bathrooms

  • 6 Bedrooms
  • 4 Bathrooms

Laundry

  • Dryer
  • Washer

Outdoor Features

  • Deck
  • Patio

Schools

  • Flatirons Elementary School
  • Manhattan Middle School
  • Boulder High School

Additional Features

  • 0.26 Acre Lot
  • Forced Air Heating System

Listing and Financial Details

  • Total Actual Rent $8,536
  • Tenant pays for deposit
  • Assessor Parcel Number R0003536

Community Details

Overview

  • No Home Owners Association
  • 4 Units
  • Smiths Add To West Boulder Subdivision

Building Details

  • Gross Income $518,882
  • Net Operating Income $125,743

Property Details

Home Type

Multi-Family

Est. Annual Taxes

$11,793

Year Built

Built in 1911

Lot Details

0

Listing Details

  • Inclusions: Electric Range/Oven,Refrigerator,Clothes Washer,Clothes Dryer
  • Year Built: 1911
  • Property Sub Type: Income Property
  • Prop. Type: Residential Income
  • Horses: No
  • Lot Size Acres: 0.26
  • Road Surface Type: Paved
  • Subdivision Name: Smiths Add To West Boulder
  • Unit Levels: Two
  • New Construction: No
  • Building Stories: 2
  • IRESDS_HasWaterRights: No
  • IRESDS_Total Sq Ft: 3201
  • Special Features: None
  • Stories: 2

Interior Features

  • Possible Use: Multi-Family
  • Private Spa: No
  • Appliances: Electric Range/Oven, Refrigerator, Washer, Dryer
  • Has Basement: None
  • Total Bedrooms: 6

Exterior Features

  • Roof: Composition
  • View: Foothills View
  • View: Yes
  • Waterfront: No
  • Disclosures: No Property Disclosure
  • Home Warranty: No
  • Construction Type: Wood/Frame
  • Patio And Porch Features: Patio, Deck
  • Property Condition: Not New, Previously Owned

Garage/Parking

  • Total Parking Spaces: 2

Utilities

  • Heating: Forced Air
  • Utilities: Natural Gas Available
  • Heating Yn: Yes
  • Electricity On Property: No
  • Water Source: City Water, City of Boulder
  • Gas Company: Natural Gas, XCel

Condo/Co-op/Association

  • Senior Community: No
  • Association: No

Association/Amenities

  • IRESDS_HasAssociation2Reserve: No
  • IRESDS_HasAssociation2Fee: No
  • IRESDS_HasAssociationReserve: No
  • IRESDS_HasAssociationFee: No

Schools

  • Elementary School: Flatirons
  • HighSchool: Boulder
  • Junior High Dist: Boulder Valley Dist RE2
  • Middle Or Junior School: Manhattan

Lot Info

  • Zoning: RES
  • Land Lease Amount Frequency: Other--See Remarks
  • Lot Size Sq Ft: 11299
  • Parcel #: R0003536
  • Irrigation Water Rights: No

Rental Info

  • Tenant Pays: Deposit

Tax Info

  • Tax Year: 2024
  • Tax Annual Amount: 11793

Multi Family

  • Number Of Units Total: 4
  • Annual Gross Income: 518882
  • Income Includes: ["Lease/Rents"]
  • Total Actual Rent: 8536
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Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Property History

Date Event Price List to Sale Price per Sq Ft
01/09/2026 01/09/26 Sold $1,995,000 0.0% $623 / Sq Ft
11/03/2025 11/03/25 For Sale $1,995,000 -- $623 / Sq Ft
Source: IRES MLS

Agents Affiliated with this Home

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Map

Source: IRES MLS

MLS Number: IRE1046759

IRES MLS