2427 20th St, Boulder, CO 80304 Property Records

Boulder County property record for 2427 20th St, Boulder, CO 80304

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.25 ba · 3,197 sqft · built 1946
Lot Size	0.162 acres (7,043 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,650,000 (May 2021)
Tax Bill	$11,745 (2025)
Deeds & Mortgages	May 2021 Mortgage Aug 2022 Line of Credit + 2 more
Flood Zone	Zone X (minimal risk)
APN	`1463-30-5-02-007`

Property Details

APN / Parcel Number

Primary APN	`1463-30-5-02-007`
Alternative APNs	`R0002706` `0002706`

Interior

Bedrooms	4 Beds
Full Baths	3.25 Baths
Half Baths	2 Half Baths
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	3,197 sqft Living Area
1st Floor Area	1,243 sqft
Upper Floors Area	1,215 sqft
Basement Area	739 sqft
Finished Basement	739 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1946
Effective Year Built	Effective 1993
Architectural Style	A-Frame
Exterior Material	Wood Shingle
Construction Type	Frame
Roof Material	Asphalt
Lot Area	7,043 sqft (0.162 acres)
Garage Type	Detached
Garage Area	720 sqft
Parking Spaces	3 Parking Spaces
Porch	Porch
Porch Area	274 sqft
Deck Area	182 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0002706
Street Address	2427 20TH ST
City	BOULDER
State	CO
Zip	80304-3653
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 9 BLK K WIDNERS NORTH
Legal Range	70
Legal Township	1N
Legal Section	30
Legal Subdivision	WIDNERS NORTH - BO
Legal Block	K
Legal Lot Number	9
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2015
Census Tract	12107

Owner

Source: Boulder County records, as of September 18, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	2427 20TH ST, BOULDER, CO 80304-3653
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
May 3, 2021	Deed of Trust, Mortgage · Commercial Mortgage DAVID BARLOW NELSON REVOCABLE TRUST
Aug 22, 2022	Deed of Trust, Mortgage · Line of Credit MIDFIRST BANK
May 3, 2021	Warranty Deed, Transfer · Commercial Mortgage MIDFIRST BANK
Feb 9, 2021	Deed of Trust, Mortgage · Line of Credit ENT CU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 3, 2021 · Amount on Record
Deed Sale	May 3, 2021 · Amount on Record
Prior Sale	Apr 25, 2012 · Amount on Record
Deed Document Number	20213882043
Prior Transfer Date	Aug 28, 2006
Prior Transfer Doc	0002802505
Record Updated	Oct 29, 2026

May 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	2427 20TH ST, BOULDER, CO 80304-3653
Transaction Type	Mortgage
Record Updated	Aug 10, 2023
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003882046
Date	May 3, 2021
Instrument	3882046

Lender

Name	DAVID BARLOW NELSON REVOCABLE TRUST
Type	Non-Lending Institution
Address	WINNETKA, IL 60093

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

August 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	2427 20TH ST, BOULDER, CO 80304-3653
Transaction Type	Mortgage
Record Updated	Aug 31, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2427 20TH ST, BOULDER, CO 80304-3653

Mortgage

Document Number	0003977766
Date	Aug 22, 2022
Instrument	3977766

Lender

Name	MIDFIRST BANK
Type	Bank
Address	OKLAHOMA CITY, OK 73162

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	60 Months
Due	Aug 9, 2027

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

May 2021: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	May 3, 2021
Property Address	2427 20TH ST, BOULDER, CO 80304-3653
Document Number	0003882043
Instrument Date	Apr 30, 2021
Instrument	3882043
Transaction Type	Transfer
Record Updated	May 19, 2021
Title Company	FIDELITY NATIONALTITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$165.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	2427 20TH ST, BOULDER, CO 80304-3653

Mortgage

Document Number	0003882044
Date	May 3, 2021
Instrument	3882044

Lender

Name	MIDFIRST BANK
Type	Bank

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

Mortgage

Document Number	0003882045
Date	May 3, 2021
Instrument	3882045

Lender

Name	JOHN BUZZELLI
Type	Private Party
Address	522 BARRISDALE, LA GRANGE PARK, IL 60526

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

February 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	2427 20TH ST, BOULDER, CO 80304-3653
Transaction Type	Mortgage
Record Updated	Feb 22, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003857387
Date	Feb 9, 2021
Instrument	3857387

Lender

Name	ENT CU
Type	Credit Union
Address	COLORADO SPRINGS, CO 80920

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	301 Months
Due	Feb 28, 2046

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of September 18, 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Boulder County
Municipality	Boulder City
Unified School District	Boulder Valley School District RE-2 (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$129,261 (+4.94%) Land $62,397 Building $66,864	$1,970,900 (-) Land $987,600 Building $983,300
2025	$11,745.00 (+2.01%)	$123,181 (-8.55%) Land $61,725 Building $61,456	$1,970,900 (-1.97%) Land $987,600 Building $983,300
2024	$11,514.00 (+1.77%)
2023	$11,314.00 (+18.33%)	$134,704 (+30.84%) Land $64,970 Building $69,734	$2,010,500 (+35.72%) Land $969,700 Building $1,040,800
2022	$9,561.00	$102,957 Land $50,971 Building $51,986	$1,481,400 Land $733,400 Building $748,000

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 31 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	31 in force
Nearby Flood Claims	5 (2013)
Claims Outside the SFHA	2 of 5
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 5 claims

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CITY OF BOULDER serves 166,080 people · EPA ID CO0107152
Water Source	Surface water
Last State Inspection	Sep 2024
Lead	2 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	Haloacetic acids resolved · Jul 2017
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 544 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Ayva Networks Fixed Wireless	2,500 / 2,500
CenturyLink Fiber	2,000 / 1,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
LiveWireNet Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T.

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