660 S 46th St, Boulder, CO 80305 Property Records

Boulder County property record for 660 S 46th St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	5 bd · 1.75 ba · 2,214 sqft · built 1958
Lot Size	0.16 acres (6,973 sqft)
Owner	2 Individual Names on File
Last Sale	$356,000 (Mar 2006)
Tax Bill	$5,128 (2025)
Deeds & Mortgages	Mar 2021 Mortgage Dec 2019 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1577-08-1-01-012`

Property Details

APN / Parcel Number

Primary APN	`1577-08-1-01-012`
Alternative APNs	`R0011041` `0011041`

Interior

Bedrooms	5 Beds
Full Baths	1.75 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	1 Story
Building Area	2,214 sqft Living Area
Gross Area	2,478 sqft
1st Floor Area	1,107 sqft
Basement Area	1,107 sqft
Finished Basement	1,107 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1958
Effective Year Built	Effective 1978
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	6,973 sqft (0.16 acres)
Garage Type	Attached
Garage Area	264 sqft
Parking Spaces	1 Parking Space
Patio Area	125 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0011041
Street Address	660 S 46TH ST
City	BOULDER
State	CO
Zip	80305-6040
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 12 BLK 1 MARTIN ACRES 3
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	MARTIN ACRES 3 - BO
Legal Block	1
Legal Lot Number	12
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1001
Census Tract	12508

Owner

660 S 46th St is owned and occupied by two individuals who acquired it in September 2024.

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

Owner of Record	2 Individual Names on File
Mailing Address	660 S 46TH ST, BOULDER, CO 80305-6040
Occupancy	Owner Occupied
Owner Type	Individual

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

Deeds, Mortgages & Sale History

Date	Document
Mar 23, 2021	Deed of Trust, Mortgage · Conventional Mortgage GUARANTEED RATE AFFINITY LLC
Dec 9, 2019	Deed of Trust, Mortgage · ARM JPMORGAN CHASE BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 29, 2006 · Amount on File
Deed Sale	Mar 29, 2006 · Amount on File
Prior Sale	Jul 11, 2003 · Amount on File
Deed Document Number	20062766401
Last Transfer Date	Sep 25, 2024
Transfer Doc	0004061695
Record Updated	Oct 29, 2026

March 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	660 S 46TH ST, BOULDER, CO 80305-6040
Transaction Type	Mortgage
Record Updated	Apr 2, 2021
Title Company	HERITAGE TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003870340
Date	Mar 23, 2021
Instrument	3870340

Lender

Name	GUARANTEED RATE AFFINITY LLC
Type	Mortgage Company
Address	CHICAGO, IL 60613

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	241 Months
Due	Apr 1, 2041

December 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	660 S 46TH ST, BOULDER, CO 80305-6040
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003753344
Date	Dec 9, 2019
Instrument	3753344

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	COLUMBUS, OH 43240

Agreement

Type	ARM
Amount	Amount on Record
Term	360 Months
Due	Dec 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	3.62%
Adjustable	Adjustable Rate Rider
Type Change Date	Dec 1, 2029
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	8.62%
Index	1-Year LIBOR
Max Rate	8.62%

Tax Assessment & Valuation

The 2025 property tax bill for 660 S 46th St was $5,128.

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		$53,754 (-0.05%) Land $27,180 Building $26,574	$860,500 (-) Land $469,700 Building $390,800
2025	$5,128.00	$53,781 Land $29,356 Building $24,425	$860,500 Land $469,700 Building $390,800
2023	$5,037.00 (+13.96%)	$62,022 (+30.3%) Land $34,693 Building $27,329	$925,700 (+35.16%) Land $517,800 Building $407,900
2022	$4,420.00	$47,600 Land $25,826 Building $21,774	$684,900 Land $371,600 Building $313,300

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 660 S 46th St in Zone X, an area of minimal flood risk.

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
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	1 in force

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 660 S 46th St is low, with a 0.04% annual chance of wildfire.

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

Wildfire Risk	Low lower than 67% of the US · lower than 84% of Colorado
Wildfire Likelihood	0.04% 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 678 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Ayva Networks Fixed Wireless	2,500 / 2,500
CenturyLink Fiber · DSL in parts of the area	2,000 / 1,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
LiveWireNet Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T.

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