3555 23rd St, Boulder, CO 80304 Property Records

Boulder County property record for 3555 23rd St, Boulder, CO 80304

Property Summary

Property Type	Single Family Home
Details	5 bd · 3.75 ba · 3,472 sqft · built 1973
Lot Size	0.244 acres (10,626 sqft)
Owner	2 Individual Names on Record
Last Sale	$113,000 (Jun 1984)
Tax Bill	$10,444 (2025)
Deeds & Mortgages	Apr 2018 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`1463-19-1-12-009`

Property Details

APN / Parcel Number

Primary APN	`1463-19-1-12-009`
Alternative APNs	`R0008501` `0008501`

Interior

Bedrooms	5 Beds
Full Baths	3.75 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	3,472 sqft Living Area
Gross Area	3,892 sqft
1st Floor Area	2,487 sqft
Upper Floors Area	985 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1973
Effective Year Built	Effective 1982
Architectural Style	A-Frame
Exterior Material	Wood Shingle
Construction Type	Frame
Roof Material	Asphalt
Lot Area	10,626 sqft (0.244 acres)
Garage Type	Attached
Garage Area	892 sqft
Parking Spaces	4 Parking Spaces
Deck Area	78 sqft
Patio Area	610 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0008501
Street Address	3555 23RD ST
City	BOULDER
State	CO
Zip	80304-1907
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 28 PARKSIDE
Legal Range	70
Legal Township	1N
Legal Section	19
Legal Subdivision	PARKSIDE - BO
Legal Block	1
Legal Lot Number	28
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1006
Census Tract	12103

Owner

Source: Boulder County records, as of June 15, 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	3555 23RD ST, BOULDER, CO 80304-1907
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 13, 1984 · Amount on Record
Deed Sale	Jun 13, 1984 · Amount on Record
Prior Sale	Sep 17, 1973 · Amount on Record
Deed Document Number	1984727175
Record Updated	Sep 20, 2026

April 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3555 23RD ST, BOULDER, CO 80304-1907
Document Number	0003651121
Instrument Date	Apr 13, 2018
Transaction Type	Mortgage
Record Updated	Apr 26, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3555 23RD ST BOULDER CO 803041907, BOULDER, CO 80304-1907

Mortgage

Document Number	0003651121
Date	Apr 18, 2018
Instrument	3651121

Lender

Name	ELEVATIONS CU
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	240 Months
Due	Apr 17, 2038

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of June 15, 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		$119,176 (+8.8%) Land $44,254 Building $74,922	$1,752,600 (-) Land $650,800 Building $1,101,800
2025	$10,444.00 (-0.68%)	$109,538 (-12.69%) Land $40,675 Building $68,863	$1,752,600 (-6.4%) Land $650,800 Building $1,101,800
2023	$10,516.00 (+17.41%)	$125,458 (+30.07%) Land $42,545 Building $82,913	$1,872,500 (+34.93%) Land $635,000 Building $1,237,500
2022	$8,957.00	$96,453 Land $34,542 Building $61,911	$1,387,800 Land $497,000 Building $890,800

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

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
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

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	Low lower than 80% of the US · lower than 91% of Colorado
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond 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 533 locations within half a mile, as of December 31, 2025

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

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

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