4475 Nassau Pl, Boulder, CO 80301 Property Records

Boulder County property record for 4475 Nassau Pl, Boulder, CO 80301

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 2,200 sqft · built 1998
Lot Size	0.196 acres (8,526 sqft)
Owner	2 Individual Names on File
Last Sale	$319,447 (Oct 1998)
Tax Bill	$8,922 (2025)
Deeds & Mortgages	Nov 2021 Line of Credit Aug 2021 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1463-17-4-23-013`

Property Details

APN / Parcel Number

Primary APN	`1463-17-4-23-013`
Alternative APNs	`R0116615` `0116615`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,200 sqft Living Area
Gross Area	3,928 sqft
1st Floor Area	1,266 sqft
Upper Floors Area	934 sqft
Basement Area	1,266 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1998
Effective Year Built	Effective 2007
Architectural Style	A-Frame
Exterior Material	Wood Shingle
Construction Type	Frame
Lot Area	8,526 sqft (0.196 acres)
Garage Type	Attached
Garage Area	462 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch
Porch Area	119 sqft
Deck Area	184 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0116615
Street Address	4475 NASSAU PL
City	BOULDER
State	CO
Zip	80301-6033
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 13 BLK 1 FOUR MILE CREEK FLG 1 SPLIT TO ID 29520/DEED 11/95 SPLIT FROM ID 29520/#1705731
Legal Range	70
Legal Township	1N
Legal Section	17
Legal Subdivision	FOUR MILE CREEK FLG 1 - BO
Legal Block	1
Legal Lot Number	13
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3020
Census Tract	12701

Owner

4475 Nassau Pl is owned and occupied by two individuals who bought it in October 1998.

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

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	2 Individual Names on File
Mailing Address	4475 NASSAU PL, BOULDER, CO 80301-6033
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Nov 23, 2021	Deed of Trust, Mortgage · Line of Credit ELEVATIONS CU
Aug 23, 2021	Correction Deed
Jul 1, 2021	Intrafamily Transfer, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Oct 16, 1998 · Amount on File
Deed Sale	Oct 16, 1998 · Amount on File
Deed Document Number	19981860070
Prior Transfer Date	May 13, 1997
Prior Transfer Doc	0001705731
Record Updated	Oct 29, 2026

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	4475 NASSAU PL, BOULDER, CO 80301-6033
Transaction Type	Mortgage
Record Updated	Dec 8, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003930084
Date	Nov 23, 2021
Instrument	3930084

Lender

Name	ELEVATIONS CU
Type	Credit Union
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	240 Months
Due	Nov 22, 2041

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

August 2021: Correction Deed

Document Type	Correction Deed
Jurisdiction	BOULDER CO
Recording Date	Aug 23, 2021
Property Address	4475 NASSAU PL, BOULDER, CO 80301-6033
Document Number	0003908654
Instrument Date	Jun 18, 2021
Instrument	3908654
Record Updated	Aug 31, 2021

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4475 NASSAU PL, BOULDER, CO 80301-6033

July 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	Jul 1, 2021
Property Address	4475 NASSAU PL, BOULDER, CO 80301-6033
Document Number	0003897169
Instrument Date	Jun 18, 2021
Instrument	3897169
Transaction Type	Transfer
Record Updated	Jul 16, 2021

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	Tenants in Common
Address	4475 NASSAU PL, BOULDER, CO 80301-6033

Tax Assessment & Valuation

The 2025 property tax bill for 4475 Nassau Pl was $8,922.

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		$97,050 (+3.71%) Land $31,131 Building $65,919	$1,497,200 (-) Land $527,800 Building $969,400
2025	$8,922.00	$93,576 Land $32,988 Building $60,588	$1,497,200 Land $527,800 Building $969,400
2023	$7,783.00 (+9.74%)	$93,814 (+22.83%) Land $33,929 Building $59,885	$1,400,200 (+27.42%) Land $506,400 Building $893,800
2022	$7,092.00	$76,374 Land $30,629 Building $45,745	$1,098,900 Land $440,700 Building $658,200

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

FEMA maps place 4475 Nassau Pl in Zone X, an area of minimal flood risk, though there have been 5 flood claims nearby since 1995.

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 File median of 29 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	29 in force
Nearby Flood Claims	5 (1995–2013)
Claims Outside the SFHA	3 of 5
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 4 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

Wildfire risk around 4475 Nassau Pl is moderate, ranking above 53% of the US, with a 0.2% annual chance of wildfire.

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

Wildfire Risk	Moderate above 53% of the US · lower than 62% of Colorado
Wildfire Likelihood	0.2% annual chance
Exposure	Indirect 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 190 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	140 / 20

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

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