Google street view image for 12430 First St, Thornton, CO 80241

Off market

$381,270

•

1 ba

•

1,228

sq ft

12430 First St, Thornton, CO 80241

About this home

12430 First St is a 1,228 square foot house on a 0.36 acre lot with 3 bedrooms and 1 bathroom. Based on Redfin's Thornton data, we estimate the home's value is $381,270.

Single-familyProperty Type

1949Year Built

0.36 acresLot Size

$310Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$381,270

$5,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 23.3% lower than the average sale price ($497K) of 6 comparable homes.

SOLD AUG 27, 2026
$575,000
A
4 beds3 baths2,408 sq ft
12894 Adams Way, Thornton, CO 80241
Listing provided by metrolistCO
SOLD JUL 30, 2026
$428,000
B
3 beds2 baths1,700 sq ft
11891 Gaylord Way, Northglenn, CO 80233
Listing provided by metrolistCO
SOLD JUL 17, 2026
$500,000
C
3 beds2 baths1,700 sq ft
11860 Lavinia Ln, Northglenn, CO 80233
Listing provided by metrolistCO
SOLD SEP 30, 2026
$445,000
D
4 beds2 baths2,050 sq ft
11905 E 119th Pl, Northglenn, CO 80233
Listing provided by metrolistCO
SOLD MAY 29, 2026
$545,000
E
3 beds2 baths1,282 sq ft
12130 York St, Thornton, CO 80241
Listing provided by metrolistCO
SOLD JUN 1, 2026
$488,000
F
3 beds2 baths1,528 sq ft
11675 Fowler Dr, Northglenn, CO 80233
Listing provided by metrolistCO

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Earn from this home

Sell

$357,300

Est. take-home

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Rent

$2,454/mo

Redfin rental estimate

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Market trends in 80241, CO

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

100.0%

0.0% MoM

Median sale price

$525K

$154 MoM

Avg. days on market

19d

1 days MoM

Recently sold homes

12 MoM

New listings for sale

COMING SOON
$550,000
4 beds4 baths1,982 sq ft
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Ashley Tate • Thrive Real Estate Group
NEW 16 HRS AGO
$670,000
4 beds4 baths3,126 sq ft
1685 E 135th Ave, Thornton, CO 80241
Benjamin Grodsky • Keller Williams DTC
OPEN TODAY, 10AM TO 3PM
$649,000
3 beds4 baths2,883 sq ft
998 E 133rd Ave, Thornton, CO 80241
Valerie Sahlieh • MB Stovall & Assoc
$380,000
3 beds3 baths1,549 sq ft
12418 Dexter Way, Thornton, CO 80241
Matiah Ulysse • Brokers Guild Homes
OPEN TODAY, 10AM TO 1PM
$550,000
3 beds3 baths2,555 sq ft
12081 Cherry Pl, Thornton, CO 80241
Laurie Colbert • Key Team Real Estate Corp.
$478,500
4 beds3 baths2,080 sq ft
4681 E 135th Way, Thornton, CO 80241
Rene Vellinga • RE/MAX Alliance
$498,000
Studio— baths1,449 sq ft
12240 Farmview St, Northglenn, CO 80241
Cameron McClellan • eXp Realty, LLC
$659,000
5 beds4 baths4,013 sq ft
13440 Detroit Ct, Thornton, CO 80241
Bridgett Renee Bantner • Ornelas Property Management LLC
OPEN TODAY, 12PM TO 2PM
$379,900
3 beds2 baths1,595 sq ft
12681 Eudora St, Thornton, CO 80241
Stacey Skelton • Keller Williams Realty Downtown LLC
$590,000
4 beds4 baths2,528 sq ft
13221 Columbine Cir, Thornton, CO 80241
Jeff O'Grady • Home Team Advantage
See all

Provided by Redfin

Sale history for 12430 First St

As the MLS and public records start to fill up, we'll list the details here.

Year

Property tax

Land + Additions

Assessment*

2025

$2,403 (+10.7%)

$9,080 + $19,070

$28,150

2024

$2,170 (+1.0%)

$8,340 + $20,720

$29,060

2023

$2,149 (+6.2%)

$8,340 + $20,720

$29,060

2022

$2,023 (−3.2%)

$8,550 + $16,760

$25,310

2021

$2,089 (+22.2%)

$8,790 + $17,240

$26,030

2020

$1,709 (−0.2%)

$8,790 + $13,680

$22,470

2019

$1,713 (+28.4%)

$8,790 + $13,680

$22,470

2018

$1,334 (+10.0%)

$9,720 + $9,070

$18,790

2017

$1,213 (+52.5%)

$9,720 + $9,070

$18,790

2016

$795 (+0.1%)

$9,720 + $9,070

$18,790

2015

$794 (+5.0%)

$3,940 + $10,860

$14,800

2014

$756 (+0.4%)

$1,970 + $5,430

$7,400

2013

$753 (−50.4%)

$2,150 + $4,710

$6,860

2012

$1,518 (+0.4%)

$4,780 + $8,770

$13,550

2011

$1,512 (−15.8%)

$4,780 + $8,770

$13,550

2010

$1,796 (+0.2%)

$4,780 + $8,770

$13,550

2009

$1,792

$5,010 + $11,070

$16,080

Tax history for 12430 First St

Year

Property tax

Land + Additions

Assessment*

2025

$2,403 (+10.7%)

$9,080 + $19,070

$28,150

2024

$2,170 (+1.0%)

$8,340 + $20,720

$29,060

2023

$2,149 (+6.2%)

$8,340 + $20,720

$29,060

2022

$2,023 (−3.2%)

$8,550 + $16,760

$25,310

2021

$2,089 (+22.2%)

$8,790 + $17,240

$26,030

2020

$1,709 (−0.2%)

$8,790 + $13,680

$22,470

2019

$1,713 (+28.4%)

$8,790 + $13,680

$22,470

2018

$1,334 (+10.0%)

$9,720 + $9,070

$18,790

2017

$1,213 (+52.5%)

$9,720 + $9,070

$18,790

2016

$795 (+0.1%)

$9,720 + $9,070

$18,790

2015

$794 (+5.0%)

$3,940 + $10,860

$14,800

2014

$756 (+0.4%)

$1,970 + $5,430

$7,400

2013

$753 (−50.4%)

$2,150 + $4,710

$6,860

2012

$1,518 (+0.4%)

$4,780 + $8,770

$13,550

2011

$1,512 (−15.8%)

$4,780 + $8,770

$13,550

2010

$1,796 (+0.2%)

$4,780 + $8,770

$13,550

2009

$1,792

$5,010 + $11,070

$16,080

*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

Eastlake Office District

The EO zone district is intended to promote a mix of residential and office uses with limited personal service uses. The zone regulates land use and design to promote appropriate preservation and encourage redevelopment consistent with the established character of the area. The EO zone district encourages nonresidential uses that are compatible and complementary to existing residential uses. This district is intended to implement the land use goals, policies and recommendations for the Eastlake Neighborhood adopted in the Eastlake Subarea Plan. Additional guidelines for development in Eastlake are contained in the Eastlake Subarea Plan.; This zone includes: Office uses mixed with residential.; Allowance for live/work oppoard the street.; Uses that typically do not generate high amounts of vehicular traffic. All parking in rear or side of lot.; Small scale buildings with residential architectural character.; Buildings oriented toward the street.; Shallow front yards.

Permitted uses

Include but are not limited to:

Bank
Day care facility
Restaurant
Housing-Group
Housing-Multiple units
Infrastructure
Office
Medical office
Library
Post office

Sep 7, 2005 • Final

Plumbing

Connect a new service line downstream of the meter and install copper piping into the home. Install a shut-off valve and a pressure reducing valve.

Plumbing

Jan 19, 2001 • Final

Residential accessory

Construct a detached garage.

ADU

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Property details

Interior

Basement Information
Basement Sq. Ft: 960
Basement Type: Unfinished

Heating & Cooling
Air Conditioning Type: Central
Heating Type: Forced Air

Room Information
# of Rooms: 6

Exterior

Exterior Information
Physical Condition: Average
Building Style Type: Ranch
Construction Type: Frame/Masonry
Building Construction Quality: Fair
Exterior Wall: Frame/Masonry/Veneer
Roof Shape Type: Gable
Building Type: Residential

Property Information
Subdivision Name: EASTLAKE
Living Sq. Ft: 1,228
Adjusted Gross Sq. Ft: 2,188
Ground Floor Sq. Ft: 1,228
Building Sq. Ft: 2,188
# of Stories: 1
Legal Description: SUB:EASTLAKE BLK:3 DESC: LOTS 25 TO 29 INC

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

Lot Information
# of Buildings: 1
Land Sq. Ft: 15,625
Legal Lot Number: 25
Legal Block Number: 3
Acres: 0.3587
Depth Footage: 125
Front Footage: 125
County Use Description: SINGLE FAMILY RESID

Financial

Assessor Information
Assessment Year: 2025

Public facts

Beds: 3
Baths: 1.0
Sq. Ft.: 1,228
Stories: 1.0
Lot Size: 0.36 acres
Style: Single Family Residential
Year Built: 1949
Year Renovated: 1949
County: Adams County
APN: R0025251

Home facts updated by county records on Oct 9, 2026

Around this home

Schools

Stellar Elementary School

Public K-5 • Assigned • 1.0mi

5/10

Century Middle School

Public 6-8 • Assigned • 0.7mi

4/10

Mountain Range High School

Public 9-12 • Assigned • 1.8mi

3/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Thornton offers several advantages including its close proximity to Denver while maintaining a suburban feel, a strong sense of community, numerous parks and outdoor recreational opportunities, a growing job market, and a generally affordable cost of...
1 month ago • Thornton
Brent Sena
Redfin agent
125 deals
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Climate risks

1/10 Flood Factor

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

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

3/10 Heat Factor

7 days above 93° expected this year, 18 days in 30 years

2/10 Wind Factor

Minor risk of severe winds over next 30 years

4/10 Air Factor

6 unhealthy days expected this year, 8 days in 30 years

Provided by First Street

Historical weather

Thornton, CO • 80241

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 6.1 hours in December, placing it above the U.S. average for solar exposure.

10.5 hrs

6.1 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$363,000 – $439,000

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