3470 Ash Ave, Boulder, CO 80305 Property Records

Boulder County property record for 3470 Ash Ave, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	2 bd · 1.5 ba · 1,235 sqft · built 1962
Lot Size	0.165 acres (7,179 sqft)
Owner	2 Individual Names on File
Last Sale	$366,800 (Oct 2012)
Tax Bill	$5,000 (2025)
Flood Zone	Zone X (moderate risk)
APN	`1577-05-2-29-002`

Property Details

APN / Parcel Number

Primary APN	`1577-05-2-29-002`
Alternative APNs	`R0011061` `0011061`

Interior

Bedrooms	2 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,235 sqft Living Area
Gross Area	1,456 sqft
1st Floor Area	1,235 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1962
Effective Year Built	Effective 1983
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	7,179 sqft (0.165 acres)
Garage Type	Attached
Garage Area	221 sqft
Parking Spaces	1 Parking Space
Porch	Porch
Porch Area	331 sqft

Utilities, Heating & Cooling

Heating System	Hot Water

Location & Zoning

Account Number	R0011061
Street Address	3470 ASH AVE
City	BOULDER
State	CO
Zip	80305-3432
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 2 BLK 2 WILLIAM MARTIN HOMESTEAD
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	WILLIAM MARTIN HOMESTEAD - BO
Legal Block	2
Legal Lot Number	2
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1011
Census Tract	12507

Owner

Source: Boulder County records · APN 1577-05-2-29-002

Assessment roll updated June 15, 2026 · Last verified June 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	1514 NEW JERSEY AVE NW, WASHINGTON, DC 20001-2416
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Oct 29, 2012 · Amount on Record
Deed Sale	Oct 29, 2012 · Amount on Record
Prior Sale	Dec 10, 1998
Deed Document Number	20123262906
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 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		$56,134 (+8.8%) Land $38,012 Building $18,122	$825,500 (-) Land $559,000 Building $266,500
2025	$5,000.00 (+4.87%)	$51,594 (-11.1%) Land $34,938 Building $16,656	$825,500 (-4.7%) Land $559,000 Building $266,500
2023	$4,768.00 (+11.04%)	$58,036 (+27.72%) Land $40,314 Building $17,722	$866,200 (+32.49%) Land $601,700 Building $264,500
2022	$4,294.00	$45,439 Land $30,052 Building $15,387	$653,800 Land $432,400 Building $221,400

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 080130125071, 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 moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 25 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	25 in force
Nearby Flood Claims	16 (1995–2013)
Claims Outside the SFHA	2 of 16
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 14 claims

Wildfire

Wildfire Risk	Low lower than 80% of the US · lower than 91% of Colorado
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond 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 · sampled at 451 locations within half a mile · Last verified October 2026

Provider	Max Down / Up (Mbps)
Ayva Fixed Wireless	2,500 / 2,500
Lumen Technologies Fiber	2,000 / 1,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
Live Wire Networks Fixed Wireless	250 / 100
T-Mobile USA Fixed Wireless	100 / 20

Drinking Water

Source: EPA Safe Drinking Water Information System via ECHO, 2026 Q3 · EPA community water system boundaries v3.0, March 2026 · Last verified October 2026

Water System	CITY OF BOULDER serves 166,080 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.