3777 23rd St, Boulder, CO 80304 Property Records

Boulder County property record for 3777 23rd St, Boulder, CO 80304

Property Summary

Property Type	Single Family Home
Details	4 bd · 4 ba · 4,605 sqft · built 1995
Lot Size	1.03 acres (45,252 sqft)
Owner	Individual Name on Record
Tax Bill	$21,612 (2025)
Deeds & Mortgages	May 2022 Transfer
Flood Zone	Zone X (minimal risk)
APN	`1463-19-1-00-030`

Property Details

APN / Parcel Number

Primary APN	`1463-19-1-00-030`
Alternative APNs	`R0070837` `0070837`

Interior

Bedrooms	4 Beds
Full Baths	4 Baths
Half Baths	2 Half Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	4,605 sqft Living Area
Gross Area	7,920 sqft
1st Floor Area	3,265 sqft
Upper Floors Area	540 sqft
Basement Area	3,265 sqft
Finished Basement	800 sqft
Unfinished Basement	2,465 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1995
Effective Year Built	Effective 1995
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	45,252 sqft
Garage Type	Attached
Garage Area	850 sqft
Parking Spaces	3 Parking Spaces

Exterior Amenities

Porch	Porch
Porch Area	80 sqft
Deck Area	120 sqft
Patio Area	561 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0070837
Street Address	3777 23RD ST
City	BOULDER
State	CO
Zip	80304-1611
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	TR 1909A 19-1N-70 1.05 AC PER DEED 893109 12/10/87 BCR
Legal Range	70
Legal Township	1N
Legal Section	19
Legal Subdivision	TR, NBR 126 & 135
Legal Tract	1909A
Legal Block	1
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1001
Census Tract	12103

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	Individual Name on Record
Mailing Address	3777 23RD ST, BOULDER, CO 80304-1611
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 10, 1987
Deed Sale	Dec 10, 1987
Prior Sale	Dec 13, 1976 · Amount on Record
Deed Document Number	1987893109
Last Transfer Date	Mar 30, 2022
Transfer Doc	0003963752
Record Updated	Oct 29, 2026

May 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	May 24, 2022
Property Address	3777 23RD ST, BOULDER, CO 80304-1611
Document Number	0003963752
Instrument Date	Mar 30, 2022
Instrument	3963752
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	3777 23RD ST, BOULDER, CO 80304-1611

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		$248,649 (+6.76%) Land $86,564 Building $162,085	$3,726,600 (-) Land $1,343,000 Building $2,383,600
2025	$21,612.00 (-3.73%)	$232,913 (-13.85%) Land $83,938 Building $148,975	$3,726,600 (-7.64%) Land $1,343,000 Building $2,383,600
2023	$22,449.00 (+9.13%)	$270,346 (+18.33%) Land $87,804 Building $182,542	$4,035,000 (+22.74%) Land $1,310,500 Building $2,724,500
2022	$20,571.00	$228,474 Land $71,286 Building $157,188	$3,287,400 Land $1,025,700 Building $2,261,700

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
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	0.02% annual chance
Exposure	Direct burnable vegetation

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 341 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: T-Mobile, Verizon.

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