Google street view image for 809 11th St, Boulder, CO 80302

Off market feb 1992 for $765K

$4,981,278

Est. refi paymentEst. refi $5,196/mo

•

4.5 ba

•

6,388

sq ft

809 11th St, Boulder, CO 80302

About this home

809 11th St is a 6,388 square foot house on a 0.39 acre lot with 6 bedrooms and 4.5 bathrooms. - it last sold on February 10, 1992 for $765,000. Based on Redfin's Boulder data, we estimate the home's value is $4,981,278.

Single-familyProperty Type

1907Year Built

0.39 acresLot Size

$780Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$4,981,278

$4.2M since sold in February 1992$27K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 63.2% higher than the average sale price ($3.05M) of 6 comparable homes.

SOLD SEP 30, 2026
$1,490,000
A
5 beds3.5 baths3,749 sq ft
844 12th St, Boulder, CO 80302
SOLD SEP 21, 2026
$4,000,000
B
4 beds5 baths4,850 sq ft
546 14th St, Boulder, CO 80302
SOLD APR 2, 2026
$2,995,000
C
5 beds3.5 baths4,447 sq ft
851 14th St, Boulder, CO 80302
SOLD MAR 31, 2026
$4,100,000
D
5 beds4.5 baths4,933 sq ft
440 Christmas Tree Dr, Boulder, CO 80302
SOLD SEP 8, 2026
$3,587,300
E
5 beds4.5 baths5,043 sq ft
820 6th St, Boulder, CO 80302
SOLD MAR 26, 2026
$2,145,000
F
6 beds4 baths3,688 sq ft
972 Pleasant St, Boulder, CO 80302

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Earn from this home

Sell

$4,693,268

Est. take-home

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Est. cash available

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Rent

$8,177/mo

Redfin rental estimate

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Market trends in 80302, CO

Last updated September 2026

Buyer's Market

Seller's Market

Buyer's market

Sale-to-List Price

96.0%

+0.7% MoM

Median sale price

$1.1M

$26K MoM

Avg. days on market

68d

5 days MoM

Recently sold homes

8 MoM

New listings for sale

$3,450,000
4 beds6 baths5,527 sq ft
2881 N Lakeridge Trl, Boulder, CO 80302
The Bernardi Group • Coldwell Banker Realty 14
$900,000
2 beds1 bath1,282 sq ft
377 Pearl St #5, Boulder, CO 80302
LISTED BY REDFIN
$575,000
3 beds2 baths1,600 sq ft
247 Switzerland Park Rd, Boulder, CO 80302
Redfin Corporation
3D WALKTHROUGH
$2,395,000
4 beds3 baths3,555 sq ft
1345 Pine St #1, Boulder, CO 80302
$180,559
1 bed1 bath738 sq ft
2510 Taft Dr #302, Boulder, CO 80302
Yam Poudel • eXp Realty, LLC
$750,000
1 bed1 bath650 sq ft
1707 Walnut St #302, Boulder, CO 80302
3D & VIDEO TOUR
$10,400,000
5 beds6.5 baths8,479 sq ft
470 Weaver Dr, Boulder, CO 80302
VIDEO TOUR
$1,750,000
3 beds1.5 baths1,234 sq ft
1327 Weaver Dr Unit & 1443, Boulder, CO 80302
3D & VIDEO TOUR
$5,900,000
5 beds6 baths8,479 sq ft
1344 Weaver Dr Unit & 470, Boulder, CO 80302
$1,675,000
2 beds2.5 baths2,094 sq ft
1655 Walnut St #106, Boulder, CO 80302
See all

Provided by Redfin

Sale history for 809 11th St

Year

Property tax

Land + Additions

Assessment*

2025

$27,071 (+4.5%)

$91,206 + $198,956

$290,162

2024

$25,902 (−0.5%)

$91,206 + $198,956

$290,162

2023

$26,031 (+20.9%)

$89,244 + $212,182

$301,426

2022

$21,531 (+4.9%)

$92,929 + $212,182

$305,111

2021

$20,532 (+2.1%)

$76,137 + $155,722

$231,859

2020

$20,103 (+1.6%)

$78,328 + $160,203

$238,531

2019

$19,796 (+5.9%)

$92,378 + $138,574

$230,952

2018

$18,692 (+3.2%)

$92,378 + $138,574

$230,952

2017

$18,107 (+9.6%)

$86,256 + $129,341

$215,597

2016

$16,516 (+5.6%)

$86,256 + $129,341

$215,597

2015

$15,639 (+20.1%)

$76,336 + $114,457

$190,793

2014

$13,022 (+2.2%)

$74,665 + $76,806

$151,471

2013

$12,736 (+0.5%)

$74,665 + $76,806

$151,471

2012

$12,670 (+0.9%)

$74,665 + $76,806

$151,471

2011

$12,558 (−2.3%)

$55,720 + $95,520

$151,240

2010

$12,860 (+7.1%)

$55,720 + $95,520

$151,240

2009

$12,008

$55,720 + $103,390

$159,110

Tax history for 809 11th St

Year

Property tax

Land + Additions

Assessment*

2025

$27,071 (+4.5%)

$91,206 + $198,956

$290,162

2024

$25,902 (−0.5%)

$91,206 + $198,956

$290,162

2023

$26,031 (+20.9%)

$89,244 + $212,182

$301,426

2022

$21,531 (+4.9%)

$92,929 + $212,182

$305,111

2021

$20,532 (+2.1%)

$76,137 + $155,722

$231,859

2020

$20,103 (+1.6%)

$78,328 + $160,203

$238,531

2019

$19,796 (+5.9%)

$92,378 + $138,574

$230,952

2018

$18,692 (+3.2%)

$92,378 + $138,574

$230,952

2017

$18,107 (+9.6%)

$86,256 + $129,341

$215,597

2016

$16,516 (+5.6%)

$86,256 + $129,341

$215,597

2015

$15,639 (+20.1%)

$76,336 + $114,457

$190,793

2014

$13,022 (+2.2%)

$74,665 + $76,806

$151,471

2013

$12,736 (+0.5%)

$74,665 + $76,806

$151,471

2012

$12,670 (+0.9%)

$74,665 + $76,806

$151,471

2011

$12,558 (−2.3%)

$55,720 + $95,520

$151,240

2010

$12,860 (+7.1%)

$55,720 + $95,520

$151,240

2009

$12,008

$55,720 + $103,390

$159,110

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Zoning and permits

Zoning
Permits

RL-1

Residential-Low 1 District

Primarily single-family detached dwelling units with some duplexes and attached dwelling units at low to very low residential densities.

Permitted uses

Include but are not limited to:

Religious facility
Housing-Multiple units
Educational/school
Recreation
Agriculture-Cropland
Park & open space

Property details

Interior

Basement Information
Basement Sq. Ft: 2,395
Basement Finish: Finished
Basement Type: Finished

Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
# of 3/4 Baths: 2

Heating & Cooling
Heating Type: Forced Air

Room Information
# of Rooms: 12

Exterior

Exterior Information
Physical Condition: Excellent
Construction Type: Masonry
Building Construction Quality: Excellent
Exterior Wall: Stone
Roof Covering Type: Concrete Tile
Roof Shape Type: Concrete Tile
Building Type: Single Family

Property Information
Subdivision Name: UNIVERSITY PLACE
Living Sq. Ft: 6,388
Ground Floor Sq. Ft: 2,455
Building Sq. Ft: 6,588
Stories Type: 2 Plus
Legal Description: LOTS 25-29 & 30 LESS E 72 FT OF N 20 FT & LESS W 53 FT OF N 7 FT BLK 26 UNIVERSITY PLACE

Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 400
Garage / Carport Type: Detached

Lot Information
# of Buildings: 2
Land Sq. Ft: 17,126
Legal Lot Number: 25
Legal Block Number: 26
Municipality Name: BOULDER
Acres: 0.3932
County Use Description: 1 FAMILY RESID

Financial

Assessor Information
Assessment Year: 2025
Tax Area: RE2-BLDR-NCWD-UDFC

Public facts

Beds: 6
Baths: 4.5
Sq. Ft.: 6,388
Stories: —
Lot Size: 0.39 acres
Style: Single Family Residential
Year Built: 1907
Year Renovated: 1990
County: Boulder County
APN: R0007399

Home facts updated by county records on Sep 2, 2026

Around this home

Schools

Flatirons Elementary School

Public K-5 • Assigned • 0.5mi

8/10

Manhattan Middle School Of The Arts And Academics

Public 6-8 • Assigned • 2.7mi

9/10

Boulder High School

Public 9-12 • Assigned • 0.8mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

5/10 Fire Factor

4% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 90° expected this year, 18 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

2/10 Air Factor

2 unhealthy days expected this year, 2 days in 30 years

Provided by First Street

Historical weather

Boulder, CO • 80302

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 10.5 hours in June and 6 hours in December, placing it above the U.S. average for solar exposure.

10.5 hrs

6 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$4.73M – $5.73M

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New listings for sale in 80302

$3,450,000

4 beds6 baths5,527 sq ft

2881 N Lakeridge Trl, Boulder, CO 80302

Listing provided by REColorado as Distributed by MLS Grid

$900,000

2 beds1 bath1,282 sq ft

377 Pearl St #5, Boulder, CO 80302

LISTED BY REDFIN3D WALKTHROUGH

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3 beds2 baths1,600 sq ft

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Listing provided by REColorado as Distributed by MLS Grid

3D WALKTHROUGH

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3D & VIDEO TOUR

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VIDEO TOUR

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3 beds1.5 baths1,234 sq ft

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3D & VIDEO TOUR

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Home values near 809 11th St

Data from public records.

Address	Redfin Estimate
835 11th St, Boulder, CO 1 Beds \| 1 Baths \| 391 Sq. Ft.	$1,221,326
832 11th St, Boulder, CO 4 Beds \| 5 Baths \| 5419 Sq. Ft.	$3,664,283

Address	Redfin Estimate
781 11th St, Boulder, CO 4 Beds \| 2 Baths \| 2060 Sq. Ft.	$1,436,721
840 11th St, Boulder, CO 3 Beds \| 1.5 Baths \| 1554 Sq. Ft.	$1,386,846

Address	Redfin Estimate
861 11th St, Boulder, CO 3 Beds \| 3 Baths \| 3379 Sq. Ft.	$2,166,705
755 11th St, Boulder, CO 3 Beds \| 2 Baths \| 2338 Sq. Ft.	$1,771,928

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 80302, CO

Sale history for 809 11th St

Tax history for 809 11th St

Zoning and permits

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 80302

Home values near 809 11th St

More real estate resources