3720 Walnut St, Boulder, CO 80301 Property Records

Boulder County property record for 3720 Walnut St, Boulder, CO 80301

Property Summary

Property Type	Exempt (Full or Partial)
Details	1,575 sqft · built 1965
Lot Size	0.921 acres (40,125 sqft)
Owner	Company Name on File
Flood Zone	Zone X (moderate risk)
APN	`1463-29-4-00-036`

Property Details

APN / Parcel Number

Primary APN	`1463-29-4-00-036`
Alternative APNs	`R0085065` `0085065`

Interior

Stories	1 Story
Building Area	1,575 sqft
1st Floor Area	1,575 sqft

Exterior

Year Built	Built 1965
Effective Year Built	Effective 1965
Lot Area	40,125 sqft (0.921 acres)

Location & Zoning

Account Number	R0085065
Street Address	3720 WALNUT ST
City	BOULDER
State	CO
Zip	80301-2524
Property Category	Other
Property Type	Other > Exempt (Full or Partial)
Legal Description	TR 3467 29-1N-70 BO TRACTS GSA MOTOR POOL
Legal Range	70
Legal Township	1N
Legal Section	29
Legal Subdivision	LAND AND TRACTS
Legal Tract	3467
Legal Block	2
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2024
Census Tract	12208

Owner

Source: Boulder County records · APN 1463-29-4-00-036

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	Company Name on File
Mailing Address	PO BOX 471, BOULDER, CO 80306-0471
Owner Type	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
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 and are not market price estimates.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$452,686 (-3.7%) Land $407,417 Building $45,269	$1,741,100 (-) Land $1,566,990 Building $174,110
2025	Additional exemption filed	$470,097 (+8.33%) Land $423,087 Building $47,010	$1,741,100 (+11.94%) Land $1,566,990 Building $174,110
2023	Additional exemption filed	$433,957 Land $390,561 Building $43,396	$1,555,400 Land $1,399,860 Building $155,540

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 14, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · 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 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 36 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	36 in force
Nearby Flood Claims	2 (2013)
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 2 claims

Wildfire

Wildfire Risk	Not rated no burnable land 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 as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Ayva Fixed Wireless	2,500 / 2,500
Xfinity Cable	2,000 / 250
Live Wire Networks Fixed Wireless	250 / 100

May also be available: AT&T, Lumen Technologies, Verizon.

Based on FCC filings for 41 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of 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.