1010 Union Ave, Boulder, CO 80304 Property Records

Boulder County property record for 1010 Union Ave, Boulder, CO 80304 · Last verified July 2026

Property Summary

Property Type	Single Family Home
Details	5 bd · 3.25 ba · 3,064 sqft · built 1989
Lot Size	0.242 acres (10,531 sqft)
Owner	2 Individual Names on File
Last Sale	$2,575,000 (May 2023)
Tax Bill	$11,847 (2025)
Deeds & Mortgages	May 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1461-13-1-07-003`

Property Details

APN / Parcel Number

Primary APN	`1461-13-1-07-003`
Alternative APNs	`R0095519` `0095519`

Interior

Bedrooms	5 Beds
Full Baths	3.25 Baths
Half Baths	2 Half Baths
Total Rooms	11 Rooms
Stories	1 Story
Building Area	3,064 sqft Living Area
Gross Area	3,500 sqft
1st Floor Area	2,288 sqft
Upper Floors Area	776 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1989
Effective Year Built	Effective 2012
Architectural Style	A-Frame
Exterior Material	Combination
Construction Type	Frame
Roof Material	Asphalt
Lot Area	10,531 sqft (0.242 acres)
Garage Type	Attached
Garage Area	436 sqft
Parking Spaces	4 Parking Spaces
Porch	Porch
Porch Area	108 sqft
Deck Area	236 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0095519
Street Address	1010 UNION AVE
City	BOULDER
State	CO
Zip	80304-0712
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 3 DIGIACOMO & E 1/2 LOT 1 SUNWOOD ID 90305 COMBINED HERE PER OWNERS REQUEST 1987
Legal Range	71
Legal Township	1N
Legal Section	13
Legal Subdivision	DIGIACOMO SUB - BO
Legal Block	1
Legal Lot Number	3
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1018
Census Tract	12104

Owner

Source: Boulder County records · APN 1461-13-1-07-003

Assessment roll updated June 15, 2026 · Last verified July 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 File
Mailing Address	1010 UNION AVE, BOULDER, CO 80304-0712
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	May 10, 2023 · Amount on Record
Deed Sale	May 10, 2023 · Amount on Record
Prior Sale	May 23, 2012 · Amount on Record
Deed Document Number	20234006867
Prior Transfer Date	May 16, 2012
Prior Transfer Doc	0003224763
Record Updated	Sep 20, 2026

May 2023: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	May 10, 2023
Property Address	1010 UNION AVE, BOULDER, CO 80304-0712
Document Number	0004006867
Instrument Date	May 09, 2023
Instrument	4006867
Transaction Type	Transfer
Record Updated	May 30, 2023
Title Company	FIDELITY NATIONAL TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$257.50
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	1010 UNION AVE, BOULDER, CO 80304-0712
Investor	Possibly a Property Investor

Mortgage

Document Number	0004006868
Date	May 10, 2023
Instrument	4006868

Lender

Name	BNY MELLON NA
Type	Bank
Address	BOSTON, MA 02108

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 01, 2053

Interest

Rate Type	Adjustable Rate
Rate	5%
Adjustable	Adjustable Rate Rider
Type Change Date	Jun 01, 2030
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	10%
Index	Other
Max Rate	10%

Tax Assessment & Valuation

Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified July 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

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.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$135,184 (+8.8%) Land $83,157 Building $52,027	$1,988,000 (-) Land $1,222,900 Building $765,100
2025	$11,847.00 (-1.36%)	$124,250 (-11.47%) Land $76,431 Building $47,819	$1,988,000 (-5.1%) Land $1,222,900 Building $765,100
2024	$12,010.00 (+1.76%)
2023	$11,802.00 (+24.8%)	$140,352 (+37.81%) Land $83,415 Building $56,937	$2,094,800 (+42.95%) Land $1,245,000 Building $849,800
2022	$9,457.00	$101,845 Land $66,831 Building $35,014	$1,465,400 Land $961,600 Building $503,800

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 080130121041, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Cost	Premium on Record median of 58 individual NFIP policies nearby
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	63 units insured 5 under condo master policies
Nearby Flood Claims	14 (2013–2015)
Claims Outside the SFHA	6 of 14
Most Recent Claim	May 2015, other causes, Severe Storms, Tornadoes, Flooding, Landslides, And Mudslides
Claims By Storm	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 13 claims

Wildfire

Wildfire Risk	Moderate above 64% of the US · above 54% of Colorado
Wildfire Likelihood	About 1 in 437 per year
Exposure	Indirect within ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 460 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Ayva	Fixed Wireless (unlicensed)	2,500 / 2,500
Xfinity	Cable	2,000 / 250
Live Wire Networks	Fixed Wireless (licensed-by-rule)	250 / 100
T-Mobile USA	Fixed Wireless	100 / 20

May also be available at this address: Lumen Technologies, AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.