636 Marine St, Boulder, CO 80302
Property image
Property image
SOLD
JAN 9, 2026

$1,977,700

Trulia Estimate
  • 6 Beds
  • 4 Baths
  • 3,201 sqft (on 0.26 acres)

636 Marine St, Boulder, CO 80302

Flatirons
Est. Refi. Payment $11,485/mo*
Refinance Your Home
Currently Off Market - Sold Jan 9, 2026 for $1,995,000

Home Value

Trulia Estimate
$1.98M
Since last month
Increased$7K (+0.4%)
Since last year
Decreased$108K (-5.1%)
Since last sale
Decreased$15K (-0.7%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +25% in the last 10 years
MonthEstimated value
2026
September 2026$1.98M
August 2026$1.98M
July 2026$1.97M
June 2026$1.98M
May 2026$1.99M
April 2026$2M
March 2026$2.01M
February 2026$2M
January 2026$2M
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
1125 10th St, Boulder, CO
0.41
Multi-Family Home
$2,137,000
08/28/26
7
3
2,256
1034 Spruce St, Boulder, CO
0.53
Multi-Family Home
$1,437,000
08/14/26
8
4
3,464
1815 17th St, Boulder, CO
0.82
Multi-Family Home
$1,828,000
06/16/26
6
5
4,007
1134 Maxwell Ave, Boulder, CO
0.74
Multi-Family Home
$1,508,000
11/24/25
6
4
2,385
1828 Pine St, Boulder, CO
1.03
Multi-Family Home
$1,543,000
10/31/25
8
3
3,302
1938 Spruce St, Boulder, CO
1.07
Multi-Family Home
$1,875,000
05/29/26
9
5
3,800
720 17th St, Boulder, CO
1.11
Multi-Family Home
$1,350,000
05/27/26
5
3
2,188
2155 Walnut St, Boulder, CO
1.17
Multi-Family Home
$3,750,000
04/24/26
6
6
12,300

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
648 University Ave, Boulder, CO 80302
0.08
$2,024,200
8
5
2,623
Off Market
632 University Ave, Boulder, CO 80302
0.08
$1,656,700
3
2
1,722
Off Market
623 Marine St, Boulder, CO 80302
0.04
$1,176,000
4
2.5
2,659
Recently Sold
610 University Ave, Boulder, CO 80302
0.09
$1,802,500
5
3
3,008
Recently Sold
611 Marine St, Boulder, CO 80302
0.05
$2,173,900
4
2
2,122
Off Market
1313 7th St, Boulder, CO 80302
0.11
$1,357,000
3
2
2,424
Off Market
775 Pleasant St, Boulder, CO 80302
0.15
$1,299,400
4
2
2,624
Off Market
1635 6th St, Boulder, CO 80302
0.09
$1,560,900
3
3
1,968
Off Market
638 Pleasant St, Boulder, CO 80302
0.15
$1,557,100
2
2
1,232
Off Market
600 Arapahoe Ave #1, Boulder, CO 80302
0.11
$603,500
3
1.5
917
Off Market
1344 6th St, Boulder, CO 80302
0.16
$1,275,000
5
3
2,479
Recently Sold

Local Information

  • Map ViewExplore the area around 636 Marine St.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Multi-Family
Built in 1911
0.26 acre lot
3,201 sqft
$623/sqft
2 Parking Spaces

About this House

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.
636 Marine St, Boulder, CO 80302 is a 6 bedroom, 4 bathroom, 3,201 sqft multi-family in Flatirons, built in 1911. It last sold for the $1,995,000 asking price on Jan 9, 2026. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $1,977,700.
Last check for updates: about 12 hours ago
Listed by Lindsey Harshman, (970) 366-1691
Compass - Boulder
Bought with: Matt Johnke, (303) 589-8500, Johnke, Matthew Realty
Source: IRES as distributed by MLS GRID, MLS#1046759

Home Details for 636 Marine St

Interior Features

Interior Details
Basement: None
Beds & Baths
Number of Bedrooms: 6Number of Bathrooms: 4
Dimensions and Layout
Living Area: 3201 Square Feet
Appliances & Utilities
Utilities: Natural Gas AvailableAppliances: Electric Range, Refrigerator, Washer, DryerDryerRefrigeratorWasher
Heating & Cooling
Heating: Forced AirHas HeatingHeating Fuel: Forced Air
Gas & Electric
Electric: XCelGas: XCel
Levels, Entrance, & Accessibility
Stories: 2Levels: Two
View
Has a ViewView: Hills

Exterior Features

Exterior Home Features
Roof: CompositionPatio / Porch: Patio, Deck
Parking & Garage
Other Parking: Less Than 1Parking Spaces: 2
Frontage
Not on Waterfront
Farm & Range
Does Not Include Irrigation Water Rights

Property Information

Year Built
Year Built: 1911
Property Type / Style
Property Type: Residential IncomeProperty Subtype: Multi Family
Building
Construction Materials: FrameNot a New Construction
Property Information
Usage of Home: Multi-FamilyNot Included in Sale: Artist Studio personal property, art work, and some of the furnishings in the rental units.Parcel Number: R0003536

Price & Status

Price
List Price: $1,995,000Price Per Sqft: $623/sqft

Active Status

MLS Status: Sold

Location

Direction & Address
City: BoulderCommunity: Smiths Add To West Boulder
School Information
Elementary School: FlatironsJr High / Middle School: ManhattanHigh School: BoulderHigh School District: Boulder Valley Dist RE2

Building

Building Area
Building Area: 3201 Square Feet

HOA

No HOA

Lot Information

Lot Area: 0.26 acres

Listing Info

Special Conditions: Private Owner

Offer

Listing Terms: Cash, Conventional

Business

Expense
Tenant Pays: Deposit

Miscellaneous

Mls Number: 1046759Attribution Contact: 970-366-1691Activation Date: Mon Nov 03 2025

Price and Tax history

DateEventPrice
Jan 9, 2026
Source: IRES as distributed by MLS GRID #1046759
Sold
$1,995,000
Nov 7, 2025
Source: REcolorado as distributed by MLS GRID #IR1046759
Pending
$1,995,000
Nov 3, 2025
Source: IRES as distributed by MLS GRID #1046759
Listed For Sale
$1,995,000
May 2, 2019
Source: N/A
Sold
$1,350,000
Sep 23, 1993
Source: N/A
Sold
$345,000

Market trends in Boulder

Last updated August 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$904K
$6.67KMoM
Sale-to-List Price
98.2%
0.2%MoM
Price per sq ft
$489
$10MoM
Available listings
765
3MoM

Around this home

Neighborhood Overview

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

What Locals Say about Flatirons

At least 4 Trulia users voted on each feature.

  • 100 % Say it's walkable to restaurants

  • 100 % Say parking is easy

  • 89 % Say it's dog friendly

  • 86 % Say there's holiday spirit

  • 86 % Say people would walk alone at night

  • 83 % Say it's walkable to grocery stores

  • 80 % Say it's quiet

  • 80 % Say yards are well-kept

  • 75 % Say there are sidewalks

  • 75 % Say streets are well-lit

  • 71 % Say they plan to stay for at least 5 years

  • 63 % Say there's wildlife

  • 61 % Say neighbors are friendly

  • 57 % Say kids play outside

  • 50 % Say car is needed

  • 50 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Nancypautsch
    "This is a dog friendly neighborhood. Several neighbors have dogs that they walk which is fun to see. We don’t presently have dogs, but we always had one to two dogs with our three kids as they were growing up. Pets definitely are park of a neighborhood community. "
    0
    Flag
  • Meganelizabethfettig
    "It’s close to the creek the park and roads that go up mountain roads but I don’t like hearing the traffics from Canyon. It also feels claustrophobic to me but I’m a mountain girl."
    1
    Flag

LGBTQ Local Legal Protections

Based on information submitted to the MLS GRID as of 2026-09-17 00:13:10 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

Frequently asked questions about 636 Marine St

  • What is 636 Marine St estimated to be worth?
    Trulia's estimated value for 636 Marine St in Boulder, CO is $1,977,700.
  • What is the price history for 636 Marine St?
    636 Marine St in Boulder, CO last sold for $1,995,000 in January 2026.
  • 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 $904K. That is up $6.67K from the prior month.
  • Does 636 Marine St have laundry facilities?
    Yes, 636 Marine St in Boulder, CO has in-unit laundry.
  • Does 636 Marine St have parking?
    Yes, 636 Marine St in Boulder, CO has on-site parking.

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