636 Marine St

Boulder, CO 80302

$1,995,000
Last Sold Price
6
Beds
4
Baths
3,201 Sq. Ft.
$623 / Sq. Ft.
3,201
Sq. Ft.
$623
per Sq. Ft.
Sold 1/9/26
Sold 1/9/26
a front view of a house with garden
a front view of a house with garden
a view of outdoor space with seating area
a view of outdoor space with deck and car parked
a view of outdoor space with seating area
a view of a chairs and table in the balcony
a view of a chair and table in backyard
a view of outdoor space yard and patio
a living room with a fireplace furniture and a large window
a view of outdoor space yard and patio
a view of a outdoor space
a front view of a house with garden
a front view of a mirror
a bathroom with a sink and mirror
a view of outdoor space and yard
a view of a flower pot with a small yard
a view of outdoor space and yard
a picture of a bathroom with a sink and a window
a view of a kitchen with a sink and cabinets
a bedroom with a bed painting on the wall and a window
a view of storage and utility room
a bedroom with a bed and a window
a view of a door with a bench
a living room with furniture and a table
a living room with furniture and a window
a living room with furniture a rug and a lamp
a bedroom with a bed and a window
a kitchen with a refrigerator and a stove
a living room with furniture and white walls
a living room with a bed furniture and a chandelier
a living room with furniture
a hallway with a view of living room
a kitchen with a stove and a sink
a view of a living room and a wooden floor
a living room with furniture and a potted plant
a living room with furniture and a potted plant
a living room with furniture and a floor to ceiling window
a living room with furniture a flat screen tv and a floor to ceiling window
a bedroom with furniture and a window
a living room with furniture and a flat screen tv
a room with a lot of flower plants
a view of living room and patio
a front view of a house with garden

Description

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...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.

Listing Agent

  1. Lindsey Harshman

    Lindsey Harshman

    Listing Agent

    Compass

    CallTextEmail

Property Details for 636 Marine Street

Locale
Boulder
LISTING UPDATED: 01/09/2026 01:04 PM

Property Details for 636 Marine Street

StatusSold
MLS #1046759
Days on Compass3
Taxes$11,793 / year
HOA Fees-
Condo/Co-op Fees-
Compass TypeMulti Family
MLS TypeResidential Income / Multi Family
Year Built1911
Lot Size0.26 AC / 11,325 SF
CountyBoulder County

Location

Sold By Johnke, Matthew Realty, Matt Johnke

Add your commute

Building Information for 636 Marine Street

Stories-Residences4Year Built1911Building Size-Lot Size0.26 AC / 11,325 SF

Payment Calculator

$10,706 per month

30 year fixed, 6.15% Interest

Principal and Interest

$9,723

Property Taxes

$983

HOA Dues

$0

The Payment Calculator is for illustrative purposes only.

Property Information for 636 Marine Street

Summary
Location and General Information
  • Latitude: 40.01
  • Longitude: -105.29
Parking
  • Total Parking: 2.00
Taxes and HOA Information
  • Has HOA: No
  • HOA Fee: $.00
  • Legal Description: TRACT 461 LESS A BO 36-1N-71 AKA E 60FT OF W1/2 OF BLK 13 SMITHS ADDITION TO WEST BOULDER LESS SLY 100FT & ELY 5FT OF NLY 170FT
  • Tax Information: No
  • HOA2 Fee Amount: $0
  • Tax Year: 2024
  • HOA Transfer Fee: No
  • HOA 2 Transfer Fee: No
  • Has Association Fee: No
  • Has Association 2 Fee: No
  • Has Association Reserve: No
  • Has Association 2 Reserve: No
  • Tax Annual Amount: $11,793
  • Parcel Number: R0003536
Property
Lot Information
  • Lot Improvements: Paved
  • Lot Size Area: 11,299.00
  • Has Irrigation Water Rights: No
  • Has Improvements: No
Property and Assessments
  • Total Finished Area Source: Other
  • Are Ditches Active: No
  • New Construction YN: No
  • Levels: Two
Utilities
  • Electric: XCel
Interior and Exterior Features
Exterior Features
  • Construction Materials: Frame
Interior Features
  • Laundry Features: Electric Range, Refrigerator, Washer, Dryer
Multi Family
Multi-Family Information
  • Number1 Bedroom Units: 2
  • Number2 Bedroom Units: 2
Unit Information
Unit 1
  • Unit Type Baths Total: 1
  • Unit Type Actual Rent: $3,170.00
  • Unit Type Units Total: 1.0
  • IRE_Unit Type Estimated Sq Ft: 696
  • Unit Type Type: Unit 1
  • Unit Type Beds Total: 2
Unit 2
  • Unit Type Baths Total: 1
  • Unit Type Actual Rent: $2,462.00
  • Unit Type Units Total: 1.0
  • IRE_Unit Type Estimated Sq Ft: 502
  • Unit Type Type: Unit 2
  • Unit Type Beds Total: 2
Unit 3
  • Unit Type Baths Total: 1
  • Unit Type Actual Rent: $2,904.00
  • Unit Type Units Total: 1.0
  • IRE_Unit Type Estimated Sq Ft: 608
  • Unit Type Type: Unit 3
  • Unit Type Beds Total: 1
Unit 4
  • Unit Type Baths Total: 1
  • Unit Type Units Total: 1.0
  • IRE_Unit Type Estimated Sq Ft: 1395
  • Unit Type Type: Unit 4
  • Unit Type Beds Total: 1
Rental
Rental Information
  • Horse YN: No
  • Rent Fee Includes: Deposit
  • Occupant Type: Tenant

Property History for 636 Marine Street

DateEvent & SourcePriceAppreciation
Jan 9, 2026

Sold (Public Record)

Public Record #1925661869

$1,995,000

+6.0% / yr

May 1, 2019

Sold (Public Record)

Public Record #643608604

$1,350,000—
DateEvent & SourcePrice
01/09/2026

Sold (Public Record)

Public Record #1925661869

$1,995,000

+6.0% / yr

05/01/2019

Sold (Public Record)

Public Record #643608604

$1,350,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 636 Marine Street

Taxable ValueLand$88,194Additions$37,325Total$125,519
Tax Record2025$12,210 ($1,018 / month)
Home Facts
Baths2.5Total Finished SqFt1,310 SqFtAbove Grade Finished SqFt1,310 SqFtLot Size11,282 SqFtStyleDuplexYear Built1911Year Renovated1970Zoning1115CountyBOULDERAPN1461-36-1-00-034

Schools near 636 Marine Street

This home is within Boulder Valley Re 2 School District.
Rating
School
Type
Grades
Distance
Flatirons Elementary School
Public - K to 5
Manhattan Middle School Of The Arts And Academics
Public - 6 to 8
Boulder High School
Public - 9 to 12
Peak To Peak Charter School
Charter - K to 12
Rating
School
Distance
Flatirons Elementary School
PublicK to 5

Manhattan Middle School Of The Arts And Academics
Public6 to 8

Boulder High School
Public9 to 12

Peak To Peak Charter School
CharterK to 12

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity. Subject to change at any time. Compass makes no guarantee, warranty or representation regarding the accuracy of any waterfront feature, water view or waterfront view.

Based on information submitted to the MLS GRID as of 01/09/2026 01:04 PM. 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. Properties displayed may be listed or sold by various participants in the MLS. IDX 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. The data is deemed reliable but is not guaranteed by MLS GRID. Use of the MLS GRID data may be subject to an end user license agreement prescribed by the applicable MLS of the Member Participant, if any, and as amended from time to time.