655 12th St, Boulder, CO 80302
Property image
Property image
OFF MARKET

655 12th St
Boulder, CO 80302

East Chautauqua
  • 6 Beds
  • 5 Baths
  • 5,754 sqft (on 0.46 acres)

$5,939,000

Trulia Estimate
as of Aug 9, 2026
Est. Refi. Payment $33,105/mo*
Refinance Your Home

$5,939,000

Trulia Estimate
as of Aug 9, 2026
Est. Refi. Payment $33,105/mo*
Refinance Your Home
6 Beds
5 Baths
5,754 sqft
(on 0.46 acres)

Local Information

  • Map ViewExplore the area around 655 12th St.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1908
Lot Size
0.46 acres
Living Area
5,754 sqft
Price/Sqft
$1,032
Parking
Garage

About this House

Historic estate property situated on a half-acre lot boasts unparalleled craftsmanship, historic detail & finishes: abundant built-ins, lead glass windows & antique lighting. Tastefully maintained & updated, this light-filled & sumptuous home grandly sits on a large hidden lot, steps from the amenities & open space of Chautauqua Park. Rising 3 stories w/ Flatirons & City views & stunning wrap around porch, walk-out basement guest suite, garage home office, pool & hot tub. See 3D tour & docs.
655 12th St, Boulder, CO 80302 is a 6 bedroom, 5 bathroom, 5,754 sqft single-family home in East Chautauqua, built in 1908. It last sold for $4,300,000 on Mar 21, 2018. It is currently off market. The Trulia Estimate is $5,939,000, with a rent estimate of $7,366/month.

Home Details for 655 12th St

Interior Features

Interior Details
BasementNumber of Rooms: 13
Heating & Cooling
Heating: RadiantHeating Fuel: Radiant
Levels, Entrance, & Accessibility
Stories: 3

Exterior Features

Exterior Home Features
Roof: AsphaltDeckExterior: Brick, Cement Concrete
Parking & Garage
GarageParking: Garage Detached

Property Information

Year Built
Year Built: 1908Year Updated: 1985
Property Type / Style
Property Type: Single Family HomeArchitecture: Other

Community

Units in Building: 1

Lot Information

Lot Area: 0.46 acres

Price History for 655 12th St

DatePriceEventSource
03/21/2018$4,300,000Sold
IRES as distributed by MLS GRID #844700
10/29/2017$4,500,000ListingRemovedAgent Provided
04/19/2017$4,500,000PriceChange
Agent Provided
01/19/2017$4,850,000Listed For SaleAgent Provided
10/27/2016$4,950,000ListingRemovedAgent Provided
05/04/2016$4,950,000PriceChange
Agent Provided
03/10/2016$5,850,000Listed For SaleAgent Provided
01/19/1999$950,000Sold
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$34,703
Assessment$5,537,000
Home facts updated by county records

Comparable Sales for 655 12th St

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
1498 King Ave, Boulder, CO
0.33
Single-Family Home
$3,885,000
04/16/26
4
4.5
5,734
440 Christmas Tree Dr, Boulder, CO
0.57
Single-Family Home
$4,100,000
03/31/26
5
4.5
4,933
851 14th St, Boulder, CO
0.25
Single-Family Home
$2,995,000
04/02/26
5
3.5
4,773
1516 Columbine Ave, Boulder, CO
0.25
Single-Family Home
$2,275,000
08/11/25
5
3.5
3,448
1380 Bluebell Ave, Boulder, CO
0.25
Single-Family Home
$3,300,000
02/23/26
3
4
4,066
1330 Mariposa Ave, Boulder, CO
0.20
Single-Family Home
$3,500,000
12/09/25
4
3
2,640
721 9th St, Boulder, CO
0.26
Single-Family Home
$2,609,700
12/12/25
4
5
2,793
765 13th Street, Boulder, CO
0.12
Single-Family Home
$1,480,000
10/13/25
6
3
3,395
626 17th St, Boulder, CO
0.36
Single-Family Home
$2,795,000
03/26/26
5
4.5
4,775
1860 Bluebell Ave, Boulder, CO
0.48
Single-Family Home
$5,650,000
09/12/25
6
7
5,110

Nearby homes

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Assigned Schools

These are the assigned schools for 655 12th St.
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

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

What Locals Say about East Chautauqua

At least 10 Trulia users voted on each feature.

  • 100 % Say there are sidewalks

  • 83 % Say people would walk alone at night

  • 83 % Say it's dog friendly

  • 77 % Say there's wildlife

  • 71 % Say there's holiday spirit

  • 67 % Say it's walkable to restaurants

  • 67 % Say yards are well-kept

  • 67 % Say parking is easy

  • 64 % Say streets are well-lit

  • 60 % Say car is needed

  • 54 % Say neighbors are friendly

  • 50 % Say they plan to stay for at least 5 years

  • 50 % Say it's quiet

  • 44 % Say kids play outside

  • 43 % Say there are community events

  • 33 % Say it's walkable to grocery stores

Sourced by Trulia users. Learn more about our methodology.
  • Chris O
    "I drive 18 miles towards Denver and / or hit DIA 1 time per week. Proximity to Baseline and 36 is awesome as I don’t have to deal with Boulder traffic. Great neighborhood"
    0
    Flag
  • Francie A.
    "Proximity without congestion"
    0
    Flag

LGBTQ Local Legal Protections

Apartments for Rent

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Explore by feature - Pet Friendly

277 pet-friendly rentals in Boulder, CO

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Explore by feature - Air Conditioning

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Explore by feature - Pool

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Explore by feature - Outdoor Space

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Homes for sale near 655 12th St

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Off Market Homes Near 655 12th St

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Frequently asked questions about 655 12th St

  • What is 655 12th St estimated to be worth?
    Trulia's estimated value for 655 12th St in Boulder, CO is $5,939,000.
  • What is the price history for 655 12th St?
    655 12th St in Boulder, CO last sold for $4,300,000 in March 2018.
  • 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.
  • How big is the lot at 655 12th St?
    The lot at 655 12th St in Boulder, CO is about 0.46 acres (19,885 sq ft).
  • Does 655 12th St have a garage?
    Yes, 655 12th St in Boulder, CO has a garage.