3515 23rd St, Boulder, CO 80304 Property Records

Boulder County property record for 3515 23rd St, Boulder, CO 80304

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 2,328 sqft · built 1973
Lot Size	0.177 acres (7,702 sqft)
Owner	2 Company Names on File
Last Sale	$154,500 (May 1992)
Tax Bill	$6,412 (2025)
Deeds & Mortgages	Jul 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1463-19-1-12-013`

Property Details

APN / Parcel Number

Primary APN	`1463-19-1-12-013`
Alternative APNs	`R0008845` `0008845`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	2 Half Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	2,328 sqft Living Area
Gross Area	2,524 sqft
1st Floor Area	1,284 sqft
Basement Area	1,240 sqft
Finished Basement	1,044 sqft
Unfinished Basement	196 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1973
Effective Year Built	Effective 1973
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Frame
Lot Area	7,702 sqft (0.177 acres)
Garage Type	Detached
Garage Area	380 sqft
Parking Spaces	1 Parking Space
Porch	Porch
Porch Area	96 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0008845
Street Address	3515 23RD ST
City	BOULDER
State	CO
Zip	80304-1907
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 32 PARKSIDE
Legal Range	70
Legal Township	1N
Legal Section	19
Legal Subdivision	PARKSIDE - BO
Legal Block	1
Legal Lot Number	32
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1006
Census Tract	12103

Owner

Source: Boulder County records · APN 1463-19-1-12-013

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	2 Company Names on File
Mailing Address	3515 23RD ST, BOULDER, CO 80304-1907
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Living Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	May 14, 1992 · Amount on Record
Deed Sale	May 14, 1992 · Amount on Record
Prior Sale	Jun 07, 1991
Deed Document Number	19921184986
Last Transfer Date	May 19, 2021
Transfer Doc	0003897521
Record Updated	Sep 20, 2026

July 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	Jul 06, 2021
Property Address	3515 23RD ST, BOULDER, CO 80304-1907
Document Number	0003897521
Map Reference	DOC 985401
Instrument Date	May 19, 2021
Instrument	3897521
Transaction Type	Transfer
Record Updated	Jun 07, 2023
Title Company	AMROCK LLC

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	3515 23RD ST, BOULDER, CO 80304-1907

Mortgage

Document Number	0003897522
Date	Jul 06, 2021
Instrument	3897522

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	119 Months
Due	Jun 01, 2031

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		$79,975 (+8.8%) Land $37,672 Building $42,303	$1,176,100 (-) Land $554,000 Building $622,100
2025	$6,412.00 (+1.02%)	$73,506 (-12.37%) Land $34,625 Building $38,881	$1,176,100 (-6.06%) Land $554,000 Building $622,100
2023	$6,347.00 (+17.89%)	$83,884 (+29.19%) Land $36,220 Building $47,664	$1,252,000 (+34%) Land $540,600 Building $711,400
2022	$5,384.00	$64,933 Land $29,405 Building $35,528	$934,300 Land $423,100 Building $511,200

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Boulder County (08013C), as of October 14, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 080130121031, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 18 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	18 in force
Nearby Flood Claims	3 (2013)
Claims Outside the SFHA	3 of 3
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 3 claims

Wildfire

Wildfire Risk	Low lower than 80% of the US · lower than 91% of Colorado
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Ayva Fixed Wireless	2,500 / 2,500
Xfinity Cable	2,000 / 250
Live Wire Networks Fixed Wireless	250 / 100
Lumen Technologies DSL · Fiber in parts of the area	140 / 20

May also be available: AT&T, T-Mobile USA, Verizon.

Based on FCC filings for 533 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system CO0107152, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CITY OF BOULDER serves 166,080 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.