445 Highland Ave, Boulder, CO 80302 Property Records

Boulder County property record for 445 Highland Ave, Boulder, CO 80302

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.5 ba · 2,052 sqft · built 1904
Lot Size	0.162 acres (7,063 sqft)
Owner	Company Name on File
Tax Bill	$16,818 (2025)
Deeds & Mortgages	Mar 2025 Mortgage Apr 2020 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1461-25-4-07-010`

Property Details

APN / Parcel Number

Primary APN	`1461-25-4-07-010`
Alternative APNs	`R0000761` `0000761`

Interior

Bedrooms	3 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	1 Story
Building Area	2,052 sqft Living Area
Gross Area	2,394 sqft
1st Floor Area	1,426 sqft
Basement Area	968 sqft
Finished Basement	626 sqft
Unfinished Basement	342 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1904
Effective Year Built	Effective 2000
Architectural Style	Ranch
Exterior Material	Combination
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	7,063 sqft (0.162 acres)
Garage Type	Detached
Garage Area	432 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch
Porch Area	176 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0000761
Street Address	445 HIGHLAND AVE
City	BOULDER
State	CO
Zip	80302-4717
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOTS 41-42 BLK 5 MAPLETON
Legal Range	71
Legal Township	1N
Legal Section	25
Legal Subdivision	MAPLETON - BO
Legal Block	5
Legal Lot Number	41
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	4
Census Block	4013
Census Tract	12101

Owner

445 Highland Ave is owned by a company that acquired it in January 2020.

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	Company Name on File
Mailing Address	704 BROOKLAWN DR, BOULDER, CO 80303-2705
Owner Type	Company

Deeds, Mortgages & Sale History

Date	Document
Mar 20, 2025	Deed of Trust, Mortgage CAROL GRASSE
Apr 10, 2020	Quit Claim Deed, Transfer NOT AVAILABLE
Aug 7, 2018	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 29, 2010
Deed Sale	Mar 29, 2010
Prior Sale	Oct 30, 2006
Deed Document Number	20103066116
Last Transfer Date	Jan 31, 2020
Transfer Doc	0003776930
Record Updated	Oct 29, 2026

March 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	445 HIGHLAND AVE, BOULDER, CO 80302-4717
Transaction Type	Mortgage
Record Updated	Jun 9, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	704 BROOKLAWN DR, BOULDER, CO 80303-2705

Mortgage

Document Number	0004080199
Date	Mar 20, 2025
Instrument	4080199

Lender

Name	CAROL GRASSE
Type	Private Party
Address	PO BOX 140748, EDGEWATER, CO 80214

Agreement

Amount	Amount on Record
Term	15 Months
Due	Jun 15, 2026

April 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOULDER CO
Recording Date	Apr 10, 2020
Property Address	445 HIGHLAND AVE, BOULDER, CO 80302-4717
Document Number	0003776930
Instrument Date	Jan 31, 2020
Instrument	3776930
Transaction Type	Transfer
Record Updated	Jun 8, 2020
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	704 BROOKLAWN DR BOULDER CO 803032705, BOULDER, CO 80303-2705

August 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOULDER CO
Recording Date	Aug 7, 2018
Property Address	445 HIGHLAND AVE, BOULDER, CO 80302-4717
Document Number	0003669962
Instrument Date	Aug 7, 2018
Instrument	3669962
Transaction Type	Transfer
Record Updated	Aug 16, 2018

Transaction

Tax	$0.00
Additional	Quitclaim

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	1315 BEAR MOUNTAIN DR #A BOULDER CO 803056278, A, BOULDER, CO 80305-6278

Tax Assessment & Valuation

The 2025 property tax bill for 445 Highland Ave was $16,818, up 2.8% from the year before.

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		$186,225 (+6.09%) Land $107,637 Building $78,588	$2,808,600 (-) Land $1,652,900 Building $1,155,700
2025	$16,818.00 (+2.77%)	$175,537 Land $103,306 Building $72,231	$2,808,600 Land $1,652,900 Building $1,155,700
2024	$16,364.00 (+2.26%)
2023	$16,003.00 (+12.44%)	$188,994 (+23.31%) Land $109,666 Building $79,328	$2,820,800 (+27.91%) Land $1,636,800 Building $1,184,000
2022	$14,233.00	$153,268 Land $79,918 Building $73,350	$2,205,300 Land $1,149,900 Building $1,055,400

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

Flood

FEMA maps place 445 Highland Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2013.

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	15 units insured incl. 9 condo units
Nearby Flood Claims	2 (2013)
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides

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 445 Highland Ave is high, ranking above 82% of the US, with a 0.8% annual chance of wildfire.

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

Wildfire Risk	High above 82% of the US · above 85% of Colorado
Wildfire Likelihood	0.8% 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 684 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
LiveWireNet Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Verizon.

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