2123 4th St, Boulder, CO 80302 Property Records

Boulder County property record for 2123 4th St, Boulder, CO 80302 · Last verified June 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	2 Beds
Bathrooms	3.25 Baths
Year Built	Built 1989
Square Footage	3,847 sqft Living Area
Lot Size	17,348 sqft (0.398 acres)
Occupancy	Owner Occupied
Last Sale	$4,000,000 (2021)
Tax Bill	$20,493.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`1461-25-3-00-023`
Alternative APNs	`R0002523` `0002523`

Interior

Bedrooms	2 Beds
Full Baths	3.25 Baths
Partial Baths	2 Partial Baths
Total Rooms	9 Rooms
Building Area	3,847 sqft Living Area
Gross Area	4,263 sqft Gross Area
1st Floor	1,666 sqft 1st Floor
Upper Floors	323 sqft Upper Floors
Basement Area	1,858 sqft Basement
Finished Basement	1,858 sqft Finished
Stories	2 Stories
Interior Structure	Wallboard/Drywall Interior Structure

Exterior

Year Built	Built 1925
Effective Year Built	Effective 1989
Exterior Material	Combination Exterior
Construction Type	Masonry/Concrete Masonry Units (CMUs) Construction
Roof Material	Asphalt Roof
Lot Area	17,348 sqft (0.398 acres)
Parking Spaces	2 Parking Spaces
Garage Type	Attached Garage
Garage Area	416 sqft Garage
Porch	Porch
Porch Area	45 sqft Porch

Utilities and HVAC

Cooling System	Central Cooling
Heating System	Radiant Heating

Location & Zoning

Account Number	R0002523
Street Address	2123 4TH ST
City	BOULDER
State	CO
Zip	80302-4901
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	TRACT 234A & E 1/2 VACATED STREET & TRACT 235A 25-1N-71 0.42 AC M/L
Legal Range	71
Legal Township	1N
Legal Section	25
Legal Subdivision	TR, NBR 101-103,105,107,109,170
Legal Tract	234A,235A
Legal Block	4
Jurisdiction	BOULDER CO
Minor Civil Division	BOULDER
Census Blockgroup	1
Census Block	1015
Census Tract	12101

Owner

Source: Boulder County records · APN 1461-25-3-00-023

Assessment roll updated June 15, 2026 · Last verified June 2026

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

Owner of Record	Individual Owner on File
Mailing Address	2123 4TH ST, BOULDER, CO 80302-4901
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Known Transactions	Last Sale Amount on Jul 26, 2021 Deed Sale Price on Jul 26, 2021 Prior Sale Amount on Aug 16, 1994
Deed Doc Number	20213902087
Prior Transfer Date	Sep 24, 2015
Prior Transfer Doc	0003479131
Record Refreshed	Sep 20, 2026

July 2021: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Jul 26, 2021
Property Address	2123 4TH ST, BOULDER, CO 80302-4901
Document Number	0003902087
Instrument Date	Jul 16, 2021
Instrument	3902087
Transaction Type	Transfer
Record Updated	Aug 04, 2021
Title Company	FIDELITY NATIONAL TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$400.00
Amount Accuracy	Full Amount Stated
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2123 4TH ST, BOULDER, CO 80302-4901

Mortgage

Document Number	0003902089
Date	Jul 26, 2021
Instrument	3902089

Lender

Name	GUARANTEED RATE AFFINITY LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Aug 01, 2051

Tax Assessment & Valuation

Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 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

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.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$232,928 (+8.8%) Land $170,796 Building $62,132	$3,425,400 (-) Land $2,511,700 Building $913,700
2025	$20,493.00 (+2.88%)	$214,087 (-8.3%) Land $156,981 Building $57,106	$3,425,400 (-1.7%) Land $2,511,700 Building $913,700
2023	$19,919.00 (+11.75%)	$233,475 (+22.15%) Land $159,916 Building $73,559	$3,484,700 (+26.71%) Land $2,386,800 Building $1,097,900
2022	$17,824.00	$191,139 Land $120,652 Building $70,487	$2,750,200 Land $1,736,000 Building $1,014,200