Off Market Jul 1999 for $127K

$472,002

Est. refi paymentEst. refi $838/mo

•

1,404

sq ft

423 Riddle Dr, Fort Collins, CO 80521

About this home

Single-familyProperty Type

1960Year Built

$336Est. Price/Sq.Ft.

Listed by Linda Hopkins • Group Horsetooth

Contact: 9702230700

Bought with • RE/MAX Advanced Inc.

•970-221-5995 (broker)

Redfin checked: 2 minutes ago

•Source:IRES as Distributed by MLS Grid #205264

Redfin Estimate

$472,002

$345K since sold in July 1999$5,000 since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.1% higher than the average sale price ($458K) of 6 comparable homes.

SOLD MAR 5, 2026
214 Clover Ln, Fort Collins, CO 80521
$282,000
A
3 beds1 bath1,944 sq ft
214 Clover Ln, Fort Collins, CO 80521
Sold Entered for Comps Only
SOLD JUN 12, 2026
$511,000
B
3 beds1.5 baths1,342 sq ft
1404 Cherry St, Fort Collins, CO 80521
SOLD MAY 14, 2026
$515,000
C
3 beds2 baths1,064 sq ft
409 Franklin St, Fort Collins, CO 80521
SOLD OCT 21, 2025
$450,000
D
3 beds1 bath1,210 sq ft
1112 Beech St, Fort Collins, CO 80521
SOLD JUL 31, 2026
$489,000
E
3 beds1 bath960 sq ft
1600 Crestmore Pl, Fort Collins, CO 80521
SOLD DEC 12, 2025
$500,000
F
3 beds2 baths1,080 sq ft
405 Franklin St, Fort Collins, CO 80521

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Earn from this home

Sell

$426,824

Est. take-home

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Refinance

Est. cash available

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Rent

$2,273/mo

Redfin rental estimate

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Market trends in 80521, CO

Last updated July 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-List Price

98.7%

+0.5% MoM

Median sale price

$535K

$22K MoM

Avg. days on market

51d

1 days MoM

Recently sold homes

8 MoM

New listings for sale

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NEW 7 HRS AGO
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OPEN SAT, 9AM TO 2PM
$715,000
2 beds2 baths1,179 sq ft
317 N Whitcomb St, Fort Collins, CO 80521
OPEN SAT, 11AM TO 1PM
$800,000
4 beds3.5 baths2,609 sq ft
3403 Coneflower Dr, Fort Collins, CO 80521
OPEN SAT, 12PM TO 2PM
$469,900
3 beds1 bath1,352 sq ft
636 S Taft Hill Rd, Fort Collins, CO 80521
Kelly Hanna • KM Luxury Homes
OPEN SUN, 12PM TO 2PM
$2,400,000
5 beds3.5 baths4,500 sq ft
3165 Stargazer Ct, Fort Collins, CO 80521
NEW 26 HRS AGO
$415,000
2 beds2 baths856 sq ft
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Kimberly Henry • Kimberly Henry
COMING SOON
$835,000
3 beds2 baths1,830 sq ft
1011 W Mountain Ave, Fort Collins, CO 80521
OPEN SAT, 11AM TO 2PM
$475,000
5 beds3 baths2,534 sq ft
621 Rook St, Fort Collins, CO 80521
$515,000
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See all

Provided by Redfin

Sale history for 423 Riddle Dr

Year

Property tax

Land + Additions

Assessment*

2025

$3,001 (+0.9%)

$2,375 + $27,738

$30,113

2024

$2,974 (+5.1%)

$2,375 + $27,738

$30,113

2023

$2,830 (+26.0%)

$2,546 + $32,133

$34,679

2022

$2,246 (−1.0%)

$2,546 + $32,133

$34,679

2021

$2,269 (−8.3%)

$2,641 + $21,142

$23,783

2020

$2,475 (−0.4%)

$2,717 + $21,750

$24,467

2019

$2,486 (+23.4%)

$2,717 + $23,738

$26,455

2018

$2,014 (+0.3%)

$2,717 + $23,738

$26,455

2017

$2,007 (+18.1%)

$2,736 + $19,361

$22,097

2016

$1,700 (+24.5%)

$2,736 + $19,361

$22,097

2014

$1,365 (−0.1%)

$3,020 + $11,950

$14,970

2013

$1,367 (+1.5%)

$3,020 + $11,950

$14,970

2012

$1,346 (+2.8%)

$3,020 + $11,410

$14,430

2011

$1,310 (−0.4%)

$3,020 + $11,410

$14,430

2010

$1,316 (+3.6%)

$3,020 + $11,410

$14,430

2009

$1,270

$3,340 + $11,340

$14,680

Tax history for 423 Riddle Dr

Year

Property tax

Land + Additions

Assessment*

2025

$3,001 (+0.9%)

$2,375 + $27,738

$30,113

2024

$2,974 (+5.1%)

$2,375 + $27,738

$30,113

2023

$2,830 (+26.0%)

$2,546 + $32,133

$34,679

2022

$2,246 (−1.0%)

$2,546 + $32,133

$34,679

2021

$2,269 (−8.3%)

$2,641 + $21,142

$23,783

2020

$2,475 (−0.4%)

$2,717 + $21,750

$24,467

2019

$2,486 (+23.4%)

$2,717 + $23,738

$26,455

2018

$2,014 (+0.3%)

$2,717 + $23,738

$26,455

2017

$2,007 (+18.1%)

$2,736 + $19,361

$22,097

2016

$1,700 (+24.5%)

$2,736 + $19,361

$22,097

2014

$1,365 (−0.1%)

$3,020 + $11,950

$14,970

2013

$1,367 (+1.5%)

$3,020 + $11,950

$14,970

2012

$1,346 (+2.8%)

$3,020 + $11,410

$14,430

2011

$1,310 (−0.4%)

$3,020 + $11,410

$14,430

2010

$1,316 (+3.6%)

$3,020 + $11,410

$14,430

2009

$1,270

$3,340 + $11,340

$14,680

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

Public record

Public record
Zoning
Permits

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

6,500 Sq. Ft.

Year renovated

1960

Sq. Ft.

1,404

Year built

1960

Style

Single Family Residential

County

Larimer County

APN

R0014079

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 30, 2026.

Jun 13, 2022 • Final

Residential plumbing

Remove and replace a section of the sewer line.

Plumbing

Jul 13, 2020 • Final

Residential general alteration

Perform a residential remodel including the removal of a flat roof to be replaced with a trussed gable roof. Add a second bathroom, remove a wall between the kitchen and living room, relocate the laundry area, and enlarge bedroom closets. Replace exterior doors, replace a sliding door with a window, and replace existing windows on the south side with high windows.

Remodel

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

Parking

Parking Features
Covered Spaces: 0
Garage Spaces: 0

Interior

Bathroom Information
Bathrooms (Full): 1
Bathrooms (Half): 0
Bathrooms (Three Quarter): 0

Bedroom Information
Bedrooms Total: 3

Heating & Cooling
Heating: Yes
Forced Air

Interior Features
Accessibility Features: Level Lot
Gas Range/Oven, Self Cleaning Oven, Dishwasher
Eat-in Kitchen
Laundry Features: Washer/Dryer Hookups, Main Level

Room Information
Basement: None, Crawl Space

Exterior

Exterior Features
Fencing: Fenced
Patio and Porch Features: Patio
Roof: Composition

Lot Information
Horse(s): No
Lot Features: Corner Lot
Other Structures: Storage
Zoning: RES

Property Information
Property Type: Residential
Waterfront: No

Subdivision Information
Subdivision Name: HANNA
MLS Area Major: Fort Collins

Building Information
Above Grade Finished Area: 1404
Building Area Total: 1404
Construction Materials: Wood/Frame

Financial

Tax Information
Parcel Number: 97101050250014079
Tax Annual Amount: 853
Tax Year: 1998

Financial Information
Listing Terms: Cash, Conventional

Utilities

Utility Information
Utilities: Natural Gas Available
Gas: Natural Gas,PSCO

Location

HOA Information
Association: No
Association Fee: 0

School Information
High School District: Poudre
Elementary School: PUTNAM
Middle or Junior School: LINCOLN
High School: POUDRE

Location Information
Unparsed Address: 423 RIDDLE DR Fort Collins CO 80521
Street Number: 423
Street Name: RIDDLE DR
City: Fort Collins
State or Province: CO
County or Parish: Larimer
Country: US
Postal Code: 80521
Coordinates: -105.098244,40.593201
Latitude: 40.593201
Longitude: -105.098244

Public facts

Beds: 3
Baths: 1.0
Sq. Ft.: 1,404
Stories: 1.0
Lot Size: 6,500 square feet
Style: Single Family Residential
Year Built: 1960
Year Renovated: 1960
County: Larimer County
APN: R0014079

Home facts updated by county records on Jul 30, 2026

Other

Listing Information
Attribution Contact: 9702230700
Close Price: $127,500
Photos Count: 1
Special Listing Conditions: Private Owner
Standard Status: Closed

Listing Date Information
Close Date: Friday, July 30, 1999
Cumulative Days on Market: 9
Days on Market: 9
Listing Contract Date: Tuesday, June 1, 1999
Modification Timestamp: Thursday, February 27, 2025 3:09 AM

Home Information
Year Built: 1960

Around this home

Schools

Putnam Elementary School

Public PreK-5 • Assigned • 0.3mi

7/10

Lincoln Middle School

Public 6-8 • Assigned • 0.5mi

5/10

Poudre High School

Public 9-12 • Assigned • 1.3mi

5/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

There's a reason Fort Collins consistently ranks among the happiest, best-loved cities in the country. It's a college town with a grown-up backbone — historic Old Town, a thriving local scene, and a culture built around craft beer, biking, and...
2 months ago • Fort Collins
Chuck Klijewski
Redfin agent
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Climate risks

1/10 Flood Factor

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

3/10 Fire Factor

0.31% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 91° expected this year, 18 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

6/10 Air Factor

13 unhealthy days expected this year, 13 days in 30 years

Provided by First Street

Historical weather

Fort Collins, CO • 80521

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 10.4 hours in June and 5.8 hours in December, placing it above the U.S. average for solar exposure.

10.4 hrs

5.8 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$449,000 – $543,000

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Nearby similar homes

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New listings for sale in 80521

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OPEN SAT, 9AM TO 2PMVIDEO TOUR

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317 N Whitcomb St, Fort Collins, CO 80521

OPEN SAT, 11AM TO 1PM

$800,000

4 beds3.5 baths2,609 sq ft

3403 Coneflower Dr, Fort Collins, CO 80521

OPEN SAT, 12PM TO 2PM

$469,900

3 beds1 bath1,352 sq ft

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Kelly Hanna • KM Luxury Homes

OPEN SUN, 12PM TO 2PM

$2,400,000

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NEW 26 HRS AGO3D WALKTHROUGH

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Kimberly Henry • Kimberly Henry

COMING SOON3D WALKTHROUGH

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Home values near 423 Riddle Dr

Data from public records.

Address	Redfin Estimate
417 Riddle Drive, Fort Collins, CO 3 Beds \| 1 Baths \| 1032 Sq. Ft.	$495,205
415 Riddle Drive, Fort Collins, CO 3 Beds \| 1 Baths \| 1956 Sq. Ft.	$426,598

Address	Redfin Estimate
421 Riddle Drive, Fort Collins, CO 3 Beds \| 1 Baths \| 1032 Sq. Ft.	$475,951
420 Riddle Drive, Fort Collins, CO 3 Beds \| 1 Baths \| 1416 Sq. Ft.	$471,161

Address	Redfin Estimate
422 Riddle Drive, Fort Collins, CO 3 Beds \| 1 Baths \| 1297 Sq. Ft.	$526,784
418 Riddle Drive, Fort Collins, CO 2 Beds \| 1 Baths \| 912 Sq. Ft.	$435,248

Property information provided by IRES as Distributed by MLS Grid when last listed in 1999. This data may not match . Learn more.

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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 80521, CO

Sale history for 423 Riddle Dr

Tax history for 423 Riddle Dr

Public record

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 80521

Home values near 423 Riddle Dr

More real estate resources